Observations of Thermospheric Winds at Middle Latitude During the Current Solar Minimum

Details Observations of Thermospheric Winds at Middle Latitude During the Current Solar Minimum Observations of Thermospheric Winds at Middle Latitude During the Current Solar Minimum

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agusmsa13b..02g&link_type=abstract

American Geophysical Union, Spring Meeting 2009, abstract #SA13B-02

Physics

2443 Midlatitude Ionosphere, 3369 Thermospheric Dynamics (0358), 3389 Tides And Planetary Waves

Scientific paper

We summarize observations of winds in the lower and upper thermosphere by the Millstone Hill incoherent scatter radar (42.6N, 288.5E) during the current solar minimum and compare them with the previous results at the same location. The core dataset consists of two 30-day campaigns in September 2005 and March 2006 as well as by-weekly experiments from March 2007 to April 2008 in support of IPY/IHY program. In the lower thermosphere, the most pronounced feature is a sustained increase in the amplitude of semidiurnal tide in both zonal and meridional wind components. At the F-region heights, strong equatorward winds are observed during nighttime. We discuss relative importance of high latitude heat sources, EUV and electron density on the observed circulation.

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