ANGEO Annales Geophysicae ANGEO Ann. Geophys. 1432-0576 Copernicus Publications Göttingen, Germany 10.5194/angeo-29-1647-2011 On the role of dust storms in triggering atmospheric gravity waves observed in the middle atmosphere Das S. K. 1 2 Taori A. 1 Jayaraman A. 1 National Atmospheric Research Laboratory, Gadanki, Tirupati – 517 502, India Department of Atmospheric Sciences, National Taiwan University, Taiwan 27 09 2011 29 9 1647 1654 Copyright: © 2011 S. K. Das et al. 2011 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://angeo.copernicus.org/articles/29/1647/2011/angeo-29-1647-2011.html The full text article is available as a PDF file from https://angeo.copernicus.org/articles/29/1647/2011/angeo-29-1647-2011.pdf

Lower atmospheric perturbations often produce measurable effects in the middle and upper atmosphere. The present study demonstrates the response of the middle atmospheric thermal structure to the significant enhancement of the lower atmospheric heating effect caused by dust storms observed over the Thar Desert, India. Our study from multi-satellite observations of two dust storm events that occurred on 3 and 8 May 2007 suggests that dust storm events produce substantial changes in the lower atmospheric temperatures as hot spots which can become sources for gravity waves observed in the middle atmosphere.

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