A global view of O+ upwelling and outflow rates between DMSP and POLAR

Details A global view of O+ upwelling and outflow rates between DMSP and POLAR A global view of O+ upwelling and outflow rates between DMSP and POLAR

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsm33b1894r&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SM33B-1894

Physics

[2407] Ionosphere / Auroral Ionosphere, [2431] Ionosphere / Ionosphere/Magnetosphere Interactions

Scientific paper

Contemporary magnetosphere modelers are now including species dependent dynamics. Energetic O+ has significant consequences for the ring current stored energy and perhaps the timing of substorm injections. The mechanism by which thermal O+ escapes from the top of the ionosphere and into the magnetosphere is not fully understood. Previous work has indicated there is a MLT dependence on the energization efficiency of thermal ions between DMSP altitudes (~840km) and Polar altitudes (6000-9000km). The study was inconclusive because of uncertainties associated with expansion and contraction of the auroral oval. These results supported the need to project upwelling O+ at DMSP altitudes into dynamic auroral boundary oriented coordinates.[|#11#|][|#11#|] We present a global view of O+ upwelling observed at DMSP compared to outflow rates observed by POLAR (6000-9000km).

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