Ionospheric Reconstructions for Various Solar, Seasonal, and Geomagnetic Conditions Obtained from the Global Assimilation of Ionospheric Measurements – Gauss Markov (GAIM-GM) Model

L.C. Gardner, R.W. Schunk, L. Scherliess, L. Zhu, J.J. Sojka

Abstract:	The GAIM-GM data assimilation model has been run for three two-week periods in 2013 covering various solar, seasonal, and geomagnetic conditions. The levels cover low, medium, and high F10.7 values; winter, summer, and equinox; and quiet, moderate, and active geomagnetic conditions. The data assimilated include ground-base slant GPS Total Electron Content (TEC) measurements, bottom-side electron density profiles from several ionosondes, occultation data from the six COSMIC satellites, and in situ electron density measurements from three Defense Meteorological Satellite Program (DMSP) satellites at 830 km altitude. The data were then assimilated into the background physics-based Ionospheric Forecast Model (IFM). The variation of TEC, peak electron density and height, and topside electron density obtained from the GAIM-GM reconstructions for the range of geophysical and magnetic activity conditions are compared. The differences between the background (IFM) model and the GAIM-GM reconstructions will also be compared. ?Note that the GAIM-GM model is currently running as an operational model at the Utah State University (USU) Space Weather Center (SWC).
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	690 - 694
Cite this article:	Gardner, L.C., Schunk, R.W., Scherliess, L., Zhu, L., Sojka, J.J., "Ionospheric Reconstructions for Various Solar, Seasonal, and Geomagnetic Conditions Obtained from the Global Assimilation of Ionospheric Measurements – Gauss Markov (GAIM-GM) Model," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 690-694.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In