Premium
Long‐term variability in the mesospheric tidal winds observed by MF Radar over Tirunelveli (8.7°N, 77.8°E)
Author(s) -
Gurubaran S.,
Rajaram R.
Publication year - 1999
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/1999gl900171
Subject(s) - radar , atmospheric sciences , term (time) , environmental science , quasi biennial oscillation , atmospheric tide , climatology , amplitude , stratosphere , meteorology , geology , physics , ionosphere , thermosphere , geophysics , telecommunications , quantum mechanics , computer science
Observations of mesospheric tidal winds in the 84–98 km height range over a period of five years with the MF radar at Tirunelveli (8.7°N, 77.8°E), India, are presented in this study. The emphasis is on describing the long‐term variability in the tidal amplitudes. The results reported herein clearly indicate pronounced interannual variability in the tidal activity, and strengthen the earlier suggestion that this feature is linked to the stratospheric quasi‐biennial oscillation (QBO).