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Detailed Reference Information |
Vineeth, C., Pant, T.K., Antonita, M., Ramkumar, G., Devasia, C.V. and Sridharan, R. (2005). A comparative study of daytime mesopause temperatures obtained using unique ground based optical and meteor wind radar techniques over the magnetic equator. Geophysical Research Letters 32: doi: 10.1029/2005GL023728. issn: 0094-8276. |
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This paper presents the first ever comparison of daytime Mesopause OH rotational temperatures as determined using Meinel (8-3) dayglow emissions with those obtained using the recently established and collocated, meteor radar (SKiYMET) over the magnetic equator in India. The measurements were made over Thiruvananthapuram (8.5¿N, 76.5¿E, 0.5¿N diplat.) for January--May 2005 period. Overall agreement had been good (¿20 K) with all the gross features coming out fairly well. Further, the temperatures estimated using these two techniques, exhibit significant wavelike modulations with periods spanning ~3--65 days with varying phase differences, presumably due to their interaction with the longer period waves like the semiannual oscillation (SAO). The consistency of the temperature variabilities at two different altitudes viz. 87 and 94 km enables investigation of the mesosphere lower thermosphere dynamic coupling. |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Airglow and aurora, Atmospheric Composition and Structure, Instruments and techniques, Ionosphere, Equatorial ionosphere, Atmospheric Processes, Mesospheric dynamics |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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