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Taori, A.
- Airglow Measurements of Mesospheric Wave Structures and Thermal Gradient Variability over a Low-Latitude Indian Station
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Authors
A. Taori
1
Affiliations
1 National Atmospheric Research Laboratory, Pakala Mandal, Gadanki 517 112, IN
1 National Atmospheric Research Laboratory, Pakala Mandal, Gadanki 517 112, IN
Source
Current Science, Vol 106, No 4 (2014), Pagination: 542-551Abstract
Simultaneous mesospheric OH and O2 temperature estimates are used in the present study to characterize the wave perturbations over Gadanki (13.5°N, 79.2°E), a low-latitude station in India. The 65° zenith angle scanning measurements show large variations from one direction to another. The zonal and vertical wavelengths of the observed wave perturbation are found to vary from 740 to 4500 km and 26 to 38 km. The temperature gradient between OH and O2 layers has been calculated, which shows significant short-period variability. The temperature gradient measurements show large changes from one direction to another. The occurrence of such large temperature gradients within 400 km suggests thermal state of the upper mesosphere to be highly dynamic, which can severely impact the upward propagation of shortperiod gravity waves.Keywords
Airglow Measurements, Mesosphere, Temperature, Thermal Gradient, Wave Perturbations.- On the Vertical Wavelength Estimates Using the Krassovsky Parameters of OH Airglow Monitoring
Abstract Views :229 |
PDF Views:80
Authors
Affiliations
1 Medium Frequency Radar, Indian Institute of Geomagnetism, Shivaji University Campus, Kolhapur 416 004, IN
2 Atmospheric Research Laboratory, Gadanki 517 112, IN
3 Indian Institute of Tropical Meteorology, Pune 411 008, IN
4 Indian Institute of Geomagnetism, Navi Mumbai 410 218, IN
5 Department of Physics, Shivaji University, Kolhapur 416 004, IN
1 Medium Frequency Radar, Indian Institute of Geomagnetism, Shivaji University Campus, Kolhapur 416 004, IN
2 Atmospheric Research Laboratory, Gadanki 517 112, IN
3 Indian Institute of Tropical Meteorology, Pune 411 008, IN
4 Indian Institute of Geomagnetism, Navi Mumbai 410 218, IN
5 Department of Physics, Shivaji University, Kolhapur 416 004, IN