Seasonal dependence of the response of the low latitude thermosphere for external forcings

Details Seasonal dependence of the response of the low latitude thermosphere for external forcings Seasonal dependence of the response of the low latitude thermosphere for external forcings

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001jastp..63..987p&link_type=abstract

Journal of Atmospheric and Solar-Terrestrial Physics, Volume 63, Issue 10, p. 987-992.

Physics

3

Scientific paper

Using the in situ measured neutral temperatures by the DE-2 satellite, the Dst geomagnetic index which is a measure of the intensity of earth's ring current along with the MSIS model predictions, the low latitude thermosphere has been shown to have a delayed response to any energy input over polar regions with the time delay revealing a seasonal dependence. The response time has been observed to vary between 8 and 20h from summer to winter. Interestingly, the response sensitivity of the thermosphere for any change in Dst index remained nearly the same throughout the year implying other forcings to be responsible for the observed seasonal dependence. These aspects are presented and discussed.

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