Articles | Volume 9, issue 1
https://doi.org/10.5194/amt-9-93-2016
https://doi.org/10.5194/amt-9-93-2016
Research article
 | 
18 Jan 2016
Research article |  | 18 Jan 2016

Mesospheric gravity wave characteristics and identification of their sources around spring equinox over Indian low latitudes

M. Sivakandan, I. Paulino, A. Taori, and K. Niranjan

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Short summary
The small-scale gravity waves are the least understood processes in the middle-atmospheric variability. Using airglow imaging, we provide new measurements of gravity wave propagation over equatorial latitudes in India. We find that propagation of waves is often in the opposite direction to the tropospheric convective regions. These waves are found to have horizontal wavelengths ranging from 12 to 42 km, with the phase velocities in the 20 to 90 km range.