Understanding storm-time ring current development through data-model comparisons of a moderate storm

Details Understanding storm-time ring current development through data-model comparisons of a moderate storm Understanding storm-time ring current development through data-model comparisons of a moderate storm

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jgra..11204208z&link_type=abstract

Journal of Geophysical Research, Volume 112, Issue A4, CiteID A04208

Physics

16

Magnetospheric Physics: Magnetic Storms And Substorms (7954), Magnetospheric Physics: Numerical Modeling, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Ring Current

Scientific paper

With three components, global magnetosphere (GM), inner magnetosphere (IM), and ionospheric electrodynamics (IE), in the Space Weather Modeling Framework (SWMF), the moderate storm on 19 May 2002 is globally simulated over a 24-hour period that includes the sudden storm commencement (SSC), initial phase, and main phase of the storm. Simulation results are validated by comparison with in situ observations from Geotail, GOES 8, GOES 10, Polar, LANL MPA, and the Sym-H and Dst indices. It is shown that the SWMF is reaching a sophistication level for allowing quantitative comparison with the observations. Major storm characteristics at the SSC, in the initial phase, and in the main phase are successfully reproduced. The simulated plasma parameters exhibit obvious dawn-dusk asymmetries or symmetries in the ring current region: higher density near the dawn and higher temperature in the afternoon and premidnight sectors; the pressure is highest on the nightside and exhibits a near dawn-dusk symmetry. In addition, it is found in this global modeling that the upstream solar wind/IMF conditions control the storm activity and an important plasma source of the ring current is in the solar wind. However, the ionospheric outflow can also affect the ring current development, especially in the main phase. Activity in the high-latitude ionosphere is also produced reasonably well. However, the modeled cross polar cap potential drop (CPCP) in the Southern Hemisphere is almost always significantly larger than that in the Northern Hemisphere during the May storm.

Affiliated with

Also associated with

No associations

Rating

Understanding storm-time ring current development through data-model comparisons of a moderate storm does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Understanding storm-time ring current development through data-model comparisons of a moderate storm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Understanding storm-time ring current development through data-model comparisons of a moderate storm will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1083678