Global Distributions of Ionospheric Electrostatic Potentials for Various Interplanetary Conditions

Details Global Distributions of Ionospheric Electrostatic Potentials for Various Interplanetary Conditions Global Distributions of Ionospheric Electrostatic Potentials for Various Interplanetary Conditions

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm32a0791k&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM32A-0791

Other

2409 Current Systems (2708), 2411 Electric Fields (2712), 2463 Plasma Convection, 2708 Current Systems (2409), 2712 Electric Fields (2411)

Scientific paper

We report on a study of the global ionospheric electrostatic potential distributions obtained from combining two algorithms used for the mapping of high-latitude and middle-latitude ionospheric electrodynamics; that is, the LiMIE (http://www.sprl.umich.edu/mist/) and IMEH (http://geospace.nat.bg) models, respectively. In this combination, the latter model utilizes the LiMIE high-latitude field-aligned current distributions for various IMF conditions and different seasons (summer, winter, equinox). The IMEH model is a mathematical tool, allowing us to study conjugacy (or non-conjugacy) of the ionospheric electric fields on a global scale, from the northern and southern polar regions to the middle- and low-latitudes. The proposed numerical scheme permits testing of different mechanisms of the interhemispheric coupling and mapping to the ionosphere through the appropriate current systems. The scheme is convenient for determining self-consistently the separatrices in both the northern and southern hemispheres. In this study we focus on the global ionospheric electrostatic field distributions neglecting other possible electric field sources. Considering some implications of the proposed technique for the space weather specification and forecasting, we developed a Web-based interface providing global distributions of the ionospheric electrostatic potentials in near-real time from the ACE upstream solar wind observations at L1.

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