Physics
Scientific paper
Mar 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012adspr..49..937t&link_type=abstract
Advances in Space Research, Volume 49, Issue 5, p. 937-942.
Physics
Scientific paper
We summarize two years of Mesosphere Lower Thermosphere Photometer (MLTP) operation of mesospheric OH and O2 emission monitoring. The deduced mesospheric OH and O2 temperatures show large variability. Nightly temperature variations over Gadanki (13.5°N, 79.2°E) are dominated by the short period wave features, while tidal amplitudes are relatively small. Our measurements are the first to report a long period seasonal variation at two upper mesospheric altitudes simultaneously over the Indian sector. Our observations reveal the presence of a dominant semi-annual oscillation (˜6 months periodicity) together with a shorter period (˜2.5 months periodicity) oscillation in both OH and O2 data.
Jayaraman Anandhan
Kamalakar V.
Taori Alok
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