Continual 24-hour observations of thermospheric winds made with the Second generation Optimized Fabry-Perot Doppler Imager (SOFDI)

Details Continual 24-hour observations of thermospheric winds made with the Second generation Optimized Fabry-Perot Doppler Imager (SOFDI) Continual 24-hour observations of thermospheric winds made with the Second generation Optimized Fabry-Perot Doppler Imager (SOFDI)

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsa21a1532g&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SA21A-1532

Physics

2415 Equatorial Ionosphere, 2435 Ionospheric Disturbances, 2437 Ionospheric Dynamics, 2439 Ionospheric Irregularities, 2494 Instruments And Techniques

Scientific paper

The Second generation Optimized Fabry-Perot Doppler Imager (SOFDI), a state-of-the-art triple-etalon Fabry-Perot interferometer has been making continual 24-hour thermospheric wind observations in upstate New York. The 630-nm data, originating from layer-integrated OI emission with centroid heights of 250 km at night and 220 km during the day, are analyzed so as to obtain measurements of horizontal winds in the thermosphere. In this paper we report results from continuous 24-hour observations of these thermospheric winds. The measurements are made with an accuracy of 15 m/s within 15 minutes during the day and 5 m/s within 10 minutes during the night. These results demonstrate the measurement capabilities of the SOFDI instrument, which will soon be relocated to Peru so as to undertake continual observations of thermospheric winds over the magnetic equator to improve our understanding of the physics of equatorial spread-F.

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