What Is the Source of the Stratospheric Gravity Wave Belt in Austral Winter?Source: Journal of the Atmospheric Sciences:;2014:;Volume( 071 ):;issue: 005::page 1583Author:Hendricks, Eric A.
,
Doyle, James D.
,
Eckermann, Stephen D.
,
Jiang, Qingfang
,
Reinecke, P. Alex
DOI: 10.1175/JAS-D-13-0332.1Publisher: American Meteorological Society
Abstract: uring austral winter, and away from orographic maxima or ?hot spots,? stratospheric gravity waves in both satellite observations and Interim European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-Interim) data reveal enhanced amplitudes in a broad midlatitude belt extending across the Southern Ocean from east of the Andes to south of New Zealand. The peak latitude of this feature slowly migrates poleward from 50° to 60°S. Wave amplitudes are much weaker across the midlatitude Pacific Ocean. These features of the wave field are in striking agreement with diagnostics of baroclinic growth rates in the troposphere associated with midlatitude winter storm tracks and the climatology of the midlatitude jet. This correlation suggests that these features of the stratospheric gravity wave field are controlled by geographical variations of tropospheric nonorographic gravity wave sources in winter storm tracks: spontaneous adjustment emission from the midlatitude winter jet, frontogenesis, and convection.
|
Collections
Show full item record
| contributor author | Hendricks, Eric A. | |
| contributor author | Doyle, James D. | |
| contributor author | Eckermann, Stephen D. | |
| contributor author | Jiang, Qingfang | |
| contributor author | Reinecke, P. Alex | |
| date accessioned | 2017-06-09T16:56:54Z | |
| date available | 2017-06-09T16:56:54Z | |
| date copyright | 2014/05/01 | |
| date issued | 2014 | |
| identifier issn | 0022-4928 | |
| identifier other | ams-76908.pdf | |
| identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4219407 | |
| description abstract | uring austral winter, and away from orographic maxima or ?hot spots,? stratospheric gravity waves in both satellite observations and Interim European Centre for Medium-Range Weather Forecasts (ECMWF) Re-Analysis (ERA-Interim) data reveal enhanced amplitudes in a broad midlatitude belt extending across the Southern Ocean from east of the Andes to south of New Zealand. The peak latitude of this feature slowly migrates poleward from 50° to 60°S. Wave amplitudes are much weaker across the midlatitude Pacific Ocean. These features of the wave field are in striking agreement with diagnostics of baroclinic growth rates in the troposphere associated with midlatitude winter storm tracks and the climatology of the midlatitude jet. This correlation suggests that these features of the stratospheric gravity wave field are controlled by geographical variations of tropospheric nonorographic gravity wave sources in winter storm tracks: spontaneous adjustment emission from the midlatitude winter jet, frontogenesis, and convection. | |
| publisher | American Meteorological Society | |
| title | What Is the Source of the Stratospheric Gravity Wave Belt in Austral Winter? | |
| type | Journal Paper | |
| journal volume | 71 | |
| journal issue | 5 | |
| journal title | Journal of the Atmospheric Sciences | |
| identifier doi | 10.1175/JAS-D-13-0332.1 | |
| journal fristpage | 1583 | |
| journal lastpage | 1592 | |
| tree | Journal of the Atmospheric Sciences:;2014:;Volume( 071 ):;issue: 005 | |
| contenttype | Fulltext |