Global distributions of auroral emissions derived from POLAR UVI observations and parameterized by the IMF strength and direction

Details Global distributions of auroral emissions derived from POLAR UVI observations and parameterized by the IMF strength and direction Global distributions of auroral emissions derived from POLAR UVI observations and parameterized by the IMF strength and direction

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agufmsh53b0326p&link_type=abstract

American Geophysical Union, Fall Meeting 2004, abstract #SH53B-0326

Physics

2407 Auroral Ionosphere (2704), 2409 Current Systems (2708), 2447 Modeling And Forecasting, 2704 Auroral Phenomena (2407), 2708 Current Systems (2409)

Scientific paper

In this study, we show our recent results in parameterizing POLAR UVI observations (in LBH short and long wavelength bands of auroral emissions) by the IMF strength/direction and Earth's dipole tilt (seasons). A mathematical representation for this parameterization is similar to our flexible, IMF-dependent models of the high-latitude ionospheric convection and field-aligned currents, derived from the DMSP and \O rsted satellites, respectively. In many respects, we confirm results obtained earlier by Baker et al. (2003) in Michigan and by Newell, Liou, Shue et al. (2001) of JHU/APL; however, none of the previous studies has yet addressed the full parameterization of auroral emissions by the IMF strength and direction during the solar activity cycle. These global distributions of auroral emissions can be utilized for construction of the IMF-dependent models of ionospheric conductivity for the quiet and disturbed conditions.

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