Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms

Details Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms

Apr 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ep%26s...63..371l&link_type=abstract

Earth, Planets and Space, Volume 63, Issue 4, p. 371-375.

Other

Scientific paper

This brief report presents geomagnetic storm effects on the formation and characteristics of the midlatitude summer nighttime anomaly (MSNA). This anomaly is a phenomenon where the diurnal variation of the plasma density maximizes at night instead of day. Under disturbed geomagnetic conditions, the MSNA is found to have smaller spatial coverage, lower magnitude of the reversed diurnal cycle, and shorter duration of the nighttime enhancement. All these features demonstrate a weakening of the MSNA. In addition, the nighttime maximum tends to occur at earlier local time. These effects can be reasonably understood in the frame of storm-induced equatorward wind and the molecular-rich air it carries along with. For instance, the shrink of the spatial coverage is essentially a dominant effect of the molecular-rich air, which tends to deplete the plasma significantly on the poleward edge of the MSNA region. On the other hand, the smaller magnitude and the shorter duration seem to be mainly caused by the storm-induced equatorward wind. Storm effects presented here add further evidence to the pivot role of effective neutral wind in the formation of MSNA.

Affiliated with

Also associated with

No associations

Rating

Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms 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 Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Weakening of the mid-latitude summer nighttime anomaly during geomagnetic storms will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-764907