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

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

doi:https://doi.org/10.5194/amt-9-93-2016

Articles | Volume 9, issue 1

https://doi.org/10.5194/amt-9-93-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-9-93-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 1

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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Final revised paper (published on 18 Jan 2016)
Preprint (discussion started on 07 Aug 2015)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC C2727: 'Gravity wave propagation in Southern India from OI green line airglow imager observations', Anonymous Referee #1, 26 Aug 2015
- RC C2774: 'New image measurements of the gravity wave propagation characteristics from a low latitude Indian station', Anonymous Referee #2, 28 Aug 2015
  - AC C3530: 'Response to the comments made by reviewer 2', Alok Taori, 26 Oct 2015
- AC C3529: 'Responses to the comments made by reviewer 1', Alok Taori, 26 Oct 2015

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.