Physics
Scientific paper
Dec 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsa11b1580b&link_type=abstract
American Geophysical Union, Fall Meeting 2010, abstract #SA11B-1580
Physics
[2407] Ionosphere / Auroral Ionosphere, [2447] Ionosphere / Modeling And Forecasting, [2481] Ionosphere / Topside Ionosphere, [2499] Ionosphere / General Or Miscellaneous
Scientific paper
The International Reference Ionosphere (IRI) is an international project sponsored by the Committee on Space research (COSPAR) and the International Union of Radio Science (URSI) that has as its goal the development and improvement of a data-based model of ionospheric densities, temperatures, and velocities using all available and reliable data sources for these ionospheric parameters. The model is widely recognized as the international standard for the specification of ionospheric parameters and recently was accepted by the International Standardization Organization (ISO) as Technical Specification TS 16457. This presentation will discuss the new version of the model, IRI-2010, which includes several important improvements and additions. The electron and ion densities in the lower ionosphere were significantly improved by using a large volume of ionosonde data as well as photochemical considerations. As an additional parameter IRI-2010 includes the transition height from molecular to cluster ions. At the F2 peak Neural Network based models for the peak density and the propagation factor M3000F2, which is related to the F2 peak height, are introduced as new options. For high latitudes the model will benefit from the introduction of auroral oval boundaries and their variation with magnetic activity. Regarding the electron temperature, IRI-2010 now models variations with solar activity.
Bilitza Dieter
McKinnell Lee-Anne
Reinisch Bodo. W.
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