Coupled Model of Storm Time Effects on the Low- to Mid-Latitude Ionosphere

Details Coupled Model of Storm Time Effects on the Low- to Mid-Latitude Ionosphere Coupled Model of Storm Time Effects on the Low- to Mid-Latitude Ionosphere

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh42a0491h&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH42A-0491

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2411 Electric Fields (2712), 2736 Magnetosphere/Ionosphere Interactions, 2753 Numerical Modeling, 2788 Storms And Substorms

Scientific paper

The details of how magnetospherically driven penetration electric fields couple to the mid- and low-latitude ionosphere and generate large scale variations and structure in the plasma density is of paramount importance to the NASA Living with a Star Program. We are developing a computational tool for self-consistent modeling of the coupled inner magnetosphere-ionosphere system. The approach is to combine two existing, but compatible, computer models which treat different parts of the physical system: the Rice Convection Model (RCM), which models the electrodynamics of the inner magnetosphere; and SAMI3 (Sami3 is Also a Model of the Ionosphere), which treats the physics of the low- and mid-latitude ionosphere. The fundamental coupling of RCM and SAMI3 is through the electrostatic potential Φ and the ionospheric conductance. The essence of the coupling scheme is as follows: (1) SAMI3 will provide the ionospheric conductance to RCM, (2) RCM will solve the potential equation to determine Φ and the electric field, and (3) RCM will then provide the electric field back to SAMI3. Thus, the coupled model will provide a self-consistent description of the ionosphere/inner-magnetosphere system to investigate the effects of penetration electric fields on the low- to mid-latitude ionosphere. We will present an overview of this program and preliminary results.
Research supported by NASA and ONR.

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