On the Effect of Modified High-Latitude Drivers (Convection and Precipitation) on the Ionospheric Plasma Density Distribution

Details On the Effect of Modified High-Latitude Drivers (Convection and Precipitation) on the Ionospheric Plasma Density Distribution On the Effect of Modified High-Latitude Drivers (Convection and Precipitation) on the Ionospheric Plasma Density Distribution

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsa21b0081b&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SA21B-0081

Mathematics

Logic

2447 Modeling And Forecasting, 2463 Plasma Convection, 2467 Plasma Temperature And Density, 2475 Polar Cap Ionosphere

Scientific paper

We present our work in developing and testing the high-latitude drivers for Utah State University (USU) GAIM (Global Assimilation Of Ionospheric Measurements). GAIM uses a physics-based model and a Kalman filter as a basis for assimilating a diverse set of real-time (or near real-time) measurements. Particle precipitation and convection patterns are the high-latitude drivers for GAIM. The Weimer convection model [{Weimer, JGR, 2001}] and Hardy precipitation model [{Hardy et al, JGR, 1985}] represent climatological patterns for these drivers. On any given day, the climatological drivers differ significantly from the real-time drivers. For ionospheric specifications and forecast, real-time high-latitude drivers are needed to get a more realistic prediction for the ionosphere. New modified high-latitude divers are developed by using real-time in situ DMSP satellite measurements. To investigate the effect of the modified drivers on the ionosphere, the climatological and modified high-latitude drivers are used to drive the Ionosphere Forecast Model (IFM) and the calculated plasma densities are then compared to the in situ densities measured along the DMSP orbits.

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