2011•Unpublished venueRequires access
A new perspective to the daytime h'F variations and its role in modulating the mesopause energetics over equatorial latitudes
S. G. Sumod, Tarun Kumar Pant, C. Vineeth, M. M. Hossain
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Abstract
This study reports unique observations, illustrating the vertical coupling between the daytime mesopause and F region of the ionosphere over a magnetic dip equatorial station Trivandrum in India. For the `first time', it has been shown that the temporal variations in the mean daytime mesopause temperatures (MPT), during geomagnetically quiet days corroborate well with that of the base height changes (h'F) of the ionosphere. However, there exist some characteristic time delays between these two, which vary from 0 to 90 minutes. The observed time delays are attributed to the role of chemistry/dynamics in modulating atomic oxygen at these altitudes.