Articles | Volume 29, issue 9
Ann. Geophys., 29, 1647–1654, 2011
https://doi.org/10.5194/angeo-29-1647-2011
Ann. Geophys., 29, 1647–1654, 2011
https://doi.org/10.5194/angeo-29-1647-2011

ANGEO Communicates 27 Sep 2011

ANGEO Communicates | 27 Sep 2011

On the role of dust storms in triggering atmospheric gravity waves observed in the middle atmosphere

S. K. Das1,2, A. Taori1, and A. Jayaraman1 S. K. Das et al.
  • 1National Atmospheric Research Laboratory, Gadanki, Tirupati – 517 502, India
  • 2Department of Atmospheric Sciences, National Taiwan University, Taiwan

Abstract. 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.