Synoptic Maps of CaII K line  intensity based on observations from MWO (1915-1985)
<|begin_of_text|><|start_header_id|>system<|end_header_id|> You are a research archivist expert in dataset metadata. Answer the question truthfully.  <|eot_id|><|start_header_id|>user<|end_header_id|> Here is the Description of a dataset. Description:'This dataset contains Carrington synoptic maps of Ca II 393.4 nm intensity for the years 1915-1985. These maps are produced using Mount Wilson Observatory calcium K-line images. The digitization and initial flat fielding was done by the solar group at UCLA as described in Lefebvre et al. 2005 (Mem. Soc. Astron. Ital., 76, 862) and in Bertello et al. 2010 (Sol. Phys., 264, 31). The current dataset is reprocessed in 2017-2018 at NSO by Luca Bertello: the full disk images were corrected for vignetting and intensity was normalized as described in Pevtsov et al. 2016 (A&A, 585, A40, doi: 10.1051/0004-6361/201526620.The details of the map-making procedure are described in the paper by Sheeley, Cooper, & Anderson 2011 (ApJ 730:51). Calculation of uncertainties is described by Bertello et al 2014 (Solar Phys., 289/7, 2419, doi: 10.1007/s11207' . Please return only a json list of at most 3 Keywords corresponding to the Description:.<|eot_id|><|start_header_id|>assistant<|end_header_id|> {"Answer" : ["Solar chromosphere"]} <|eot_id|>
 Here is the Description of a dataset. Description:'This dataset contains Carrington synoptic maps of Ca II 393.4 nm intensity for the years 1915-1985. These maps are produced using Mount Wilson Observatory calcium K-line images. The digitization and initial flat fielding was done by the solar group at UCLA as described in Lefebvre et al. 2005 (Mem. Soc. Astron. Ital., 76, 862) and in Bertello et al. 2010 (Sol. Phys., 264, 31). The current dataset is reprocessed in 2017-2018 at NSO by Luca Bertello: the full disk images were corrected for vignetting and intensity was normalized as described in Pevtsov et al. 2016 (A&A, 585, A40, doi: 10.1051/0004-6361/201526620.The details of the map-making procedure are described in the paper by Sheeley, Cooper, & Anderson 2011 (ApJ 730:51). Calculation of uncertainties is described by Bertello et al 2014 (Solar Phys., 289/7, 2419, doi: 10.1007/s11207' . Please return only a json list of at most 3 Keywords corresponding to the Description:.
This dataset contains Carrington synoptic maps of Ca II 393.4 nm intensity for the years 1915-1985. These maps are produced using Mount Wilson Observatory calcium K-line images. The digitization and initial flat fielding was done by the solar group at UCLA as described in Lefebvre et al. 2005 (Mem. Soc. Astron. Ital., 76, 862) and in Bertello et al. 2010 (Sol. Phys., 264, 31). The current dataset is reprocessed in 2017-2018 at NSO by Luca Bertello: the full disk images were corrected for vignetting and intensity was normalized as described in Pevtsov et al. 2016 (A&A, 585, A40, doi: 10.1051/0004-6361/201526620.The details of the map-making procedure are described in the paper by Sheeley, Cooper, & Anderson 2011 (ApJ 730:51). Calculation of uncertainties is described by Bertello et al 2014 (Solar Phys., 289/7, 2419, doi: 10.1007/s11207
Solar chromosphere