Influence of stratospheric sudden warming on the equatorial troposphere
Article first published online: 17 MAR 2006
Copyright 2006 by the American Geophysical Union.
Geophysical Research Letters
Volume 33, Issue 6, March 2006
How to Cite
2006), Influence of stratospheric sudden warming on the equatorial troposphere, Geophys. Res. Lett., 33, L06804, doi:10.1029/2005GL024510.(
- Issue published online: 17 MAR 2006
- Article first published online: 17 MAR 2006
- Manuscript Accepted: 18 JAN 2006
- Manuscript Revised: 5 DEC 2005
- Manuscript Received: 30 AUG 2005
 A circulation change related to stratospheric sudden warming was investigated to examine the role of the stratosphere in equatorial tropospheric convective activity. A composite analysis of twelve stratospheric warmings from 1979 to 2001 revealed that the meridional circulation change associated with stratospheric warming in the polar region produces a lower temperature in the equatorial lower stratosphere and upper troposphere, which leads to a seesaw of convective activity in the troposphere – an enhancement of convective activity near the equatorial southern hemisphere (10°S-equator) but a suppression in the tropics of the northern hemisphere (5°N–15°N).