A new perspective to the daytime h´F variations and its role in modulating the mesopause energetics over equatorial latitudes

Author

Sumod, S.G. ; Pant, T.K. ; Vineeth, C. ; Hossain, M.M.

Author_Institution

Space Phys. Lab., Vikram Sarabhai Space Centre, Trivandrum, India

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

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.

Keywords

F-region; atmospheric composition; atmospheric temperature; geomagnetic variations; F region; India; Trivandrum station; atomic oxygen; base height; daytime h F variations; daytime mesopause; equatorial latitudes; geomagnetically quiet days; magnetic dip equatorial station; mean daytime mesopause temperatures; mesopause energetics; temporal variations; Atmospheric waves; Couplings; Delay effects; Extraterrestrial measurements; Ionosphere; Temperature measurement; Tides;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050972

Filename

6050972