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AMT | Articles | Volume 12, issue 2
Atmos. Meas. Tech., 12, 1277–1293, 2019
https://doi.org/10.5194/amt-12-1277-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 12, 1277–1293, 2019
https://doi.org/10.5194/amt-12-1277-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 27 Feb 2019

Research article | 27 Feb 2019

A broadband cavity-enhanced spectrometer for atmospheric trace gas measurements and Rayleigh scattering cross sections in the cyan region (470–540 nm)

Nick Jordan et al.

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Cited articles

Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I – gas phase reactions of Ox, HOx, NOx and SOx species, Atmos. Chem. Phys., 4, 1461–1738, https://doi.org/10.5194/acp-4-1461-2004, 2004. 
Axson, J. L., Washenfelder, R. A., Kahan, T. F., Young, C. J., Vaida, V., and Brown, S. S.: Absolute ozone absorption cross section in the Huggins Chappuis minimum (350–470 nm) at 296 K, Atmos. Chem. Phys., 11, 11581–11590, https://doi.org/10.5194/acp-11-11581-2011, 2011. 
Bahrini, C., Grégoire, A.-C., Obada, D., Mun, C., and Fittschen, C.: Incoherent broad-band cavity enhanced absorption spectroscopy for sensitive and rapid molecular iodine detection in the presence of aerosols and water vapour, Opt. Laser Technol., 108, 466–479, https://doi.org/10.1016/j.optlastec.2018.06.050, 2018. 
Ball, S. M., Hollingsworth, A. M., Humbles, J., Leblanc, C., Potin, P., and McFiggans, G.: Spectroscopic studies of molecular iodine emitted into the gas phase by seaweed, Atmos. Chem. Phys., 10, 6237–6254, https://doi.org/10.5194/acp-10-6237-2010, 2010. 
Bates, D. R.: Rayleigh scattering by air, Planet. Space Sci., 32, 785–790, https://doi.org/10.1016/0032-0633(84)90102-8, 1984. 
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A new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540 nm and two highly reflective mirrors to yield an effective absorption path of 6.3 km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.
A new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...
Citation
{"cc_re__cc_re__cc_by_4_0": ["ref=\"https://amt.copernicus.org/articles/12/issue2.html\">Volume 12, issue 2</a> </span>\n            \n                <div class=\"citation-header\" id=\"citation-content\">\n                    Atmos. Meas. Tech., 12, 1277&ndash;1293, 2019<br/>\n                    https://doi.org/10.5194/amt-12-1277-2019<br/>\n                    &copy; Author(s) 2019. This work is distributed under <br class=\"hide-on-mobile hide-on-tablet\" />the Creative Commons Attribution 4.0 License.\n                        <br/> <a target=\"_blank\" href=\"https://creativecommons.org/licenses/by/4.0/\" rel=\"license\" class=\"licence-icon\"> <img src=\"https://www.atmospheric-measurement-techniques.net/licenceIcon_16.png\"></a>\n                </div>\n            </div>\n            \n            <div class=\"hide-on-mobile hide-on-tablet\">\n                <div class=\"citation-header\">\n                    Atmos. Meas. Tech., 12, 1277&ndash;1293, 2019<br/>\n                    https://doi.org/10.5194/amt-12-1277-2019<br/>\n                    &copy; Author(s) 2019. This work is distributed under <br class=\"hide-on-mobile hide-on-tablet\" />t", "6.png\"></a>\n                </div>\n            </div>\n            \n            <div class=\"hide-on-mobile hide-on-tablet\">\n                <div class=\"citation-header\">\n                    Atmos. Meas. Tech., 12, 1277&ndash;1293, 2019<br/>\n                    https://doi.org/10.5194/amt-12-1277-2019<br/>\n                    &copy; Author(s) 2019. This work is distributed under <br class=\"hide-on-mobile hide-on-tablet\" />the Creative Commons Attribution 4.0 License.\n                        <br/> <a target=\"_blank\" href=\"https://creativecommons.org/licenses/by/4.0/\" rel=\"license\" class=\"licence-icon\"> <img src=\"https://www.atmospheric-measurement-techniques.net/licenceIcon_16.png\"></a>\n                </div>\n            </div>        </div>\n        <div class=\"grid-55 hide-on-tablet hide-on-mobile grid-parent\">\n                <div class=\"text-right\">\n                    <a href=\"https://www.atmospheric-measurement-techniques.net/\">AMT</a> | <a href=\"https://amt.copernicus.org/\">Articles</a> | <a href=\"https://amt.copernicus.org/articles/12/issue2.html\">Volume 12, issue 2</a>\n               ", "blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/template_logo_copernicus_publications_177x22_white.png\" alt=\"\" style=\"width: 1784px; height: 330px;\" /></a></span>\r\n</div>\n\n            </div>\n\n        </div>\n\n        <div class=\"col-12\">\n\n            <div class=\"row\">\n\n                <div class=\"col-12 col-xl-auto mt-3\">\n\n                    <div class=\"row align-items-start align-items-lg-center\">\n\n                        <div class=\"d-none d-md-block col-md-auto pr-2 pt-1\"><a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/ci_refresh_graphic_cc_by_footer_logo.jpg\" cofileid=\"14271\" alt=\"\"></a></div>\n\n                        <div class=\"col-12 col-md mb-3 mb-md-0 pl-md-0\">All site content, except where otherwise noted, is licensed under the <a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\">Creative Commons Attribution 4.0 License</a>.</div>\n\n                        <div class=\"d-md-none col-12\"><a href=\"https://creativecommons.org/lice", "            <div class=\"row align-items-start align-items-lg-center\">\n\n                        <div class=\"d-none d-md-block col-md-auto pr-2 pt-1\"><a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/ci_refresh_graphic_cc_by_footer_logo.jpg\" cofileid=\"14271\" alt=\"\"></a></div>\n\n                        <div class=\"col-12 col-md mb-3 mb-md-0 pl-md-0\">All site content, except where otherwise noted, is licensed under the <a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\">Creative Commons Attribution 4.0 License</a>.</div>\n\n                        <div class=\"d-md-none col-12\"><a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/ci_refresh_graphic_cc_by_footer_logo.jpg\" cofileid=\"14271\" alt=\"\"></a></div>\n\n                    </div>\n\n                </div>\n\n                <div class=\"col-12 text-center text-md-left col-lg-auto mt-3\">\n\n                    <div class=\"row align-items-cen", "ns.org/licenses/by/4.0/\" target=\"_blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/ci_refresh_graphic_cc_by_footer_logo.jpg\" cofileid=\"14271\" alt=\"\"></a></div>\n\n                        <div class=\"col-12 col-md mb-3 mb-md-0 pl-md-0\">All site content, except where otherwise noted, is licensed under the <a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\">Creative Commons Attribution 4.0 License</a>.</div>\n\n                        <div class=\"d-md-none col-12\"><a href=\"https://creativecommons.org/licenses/by/4.0/\" target=\"_blank\"><img src=\"https://www.atmospheric-measurement-techniques.net/ci_refresh_graphic_cc_by_footer_logo.jpg\" cofileid=\"14271\" alt=\"\"></a></div>\n\n                    </div>\n\n                </div>\n\n                <div class=\"col-12 text-center text-md-left col-lg-auto mt-3\">\n\n                    <div class=\"row align-items-center pt-xl-2\">\n\n                        <div class=\"col d-md-none px-0\"></div>\n\n                        <div class=\"col-auto pr-1\"><a href=\"https://www.atmospheric-measurement-tec"], "copyright__copyright__copyright": ["ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation", "ospheric trace gases nitrogen dioxide and iodine is described. The spectrometer uses a light-emitting diode between 470 and 540\u2009nm and two highly reflective mirrors to yield an effective absorption path of 6.3\u2009km. We remeasured scattering cross sections of common atmospheric gases in the cyan region and present sample NO2 measurements that agreed with those made with a laser-based instrument.\nA new spectrometer to measure abundances of the atmospheric trace gases nitrogen dioxide and...\nCitation"]}