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  Observations of HF radio propagation at high latitudes and predictions using data-driven simulations
  posted on 2018-05-16, 14:44 authored by E. M. Warrington, A. J. Stocker, J. Hallam1, D. R. Siddle1, H. A. H. Al-Behadili, N. Y. Zaalov2, F. Honary3, N. C. Rogers3, D. H. Boteler4, D. W. Danskin4Researchers at the University of Leicester, Lancaster University and St Petersburg State University
  have developed various models that can be employed in HF radio propagation predictions. Signal
  coverage predictions make use of numerical ray tracing to estimate the ray paths through a model
  ionosphere that includes various ionospheric features prevalent at high latitudes (in particular
  patches, arcs, ionisation tongue, auroral zone irregularities and the mid-latitude trough). Modelling
  of D-region absorption is also included. GOES satellites provide information on X-ray flux
  (causing shortwave fadeout during solar flares) and precipitating energetic proton flux which
  correlates strongly with Polar Cap Absorption (PCA). Solar wind and interplanetary magnetic field
  measurements from the ACE or DSCOVR spacecraft provide geomagnetic index estimates used
  to model the location of both auroral absorption and the proton rigidity cutoff boundary that defines
  the latitudinal extent of PCA during solar proton events (SPE). This paper presents measurements
  and associated modelling for a 9 day period.
  The authors are grateful to the EPSRC for their support of this research through grants EP/K008781/1 and EP/K007971/1. We are also grateful to the Global Ionospheric Radio Observatory (Reinisch and Galkin, ) for the scaled ionosonde measurements (http://giro.uml.edu/didbase/scaled.php), and to the hosts of our equipment at various sites. This research used the ALICE High Performance Computing Facility at the University of Leicester.
  15th International Ionospheric Effects Symposium, 2017Author affiliation
  /Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of EngineeringSource
  15th International Ionospheric Effects Symposium - Alexandria, VA, United StatesVersion
  - AM (Accepted Manuscript)