guest ::
| Home > Publications database > Mjo-related intraseasonal variation of gravity waves in the southern hemisphere tropical stratosphere revealed by high-resolution airs observations |
| Home > Publications database > Mjo-related intraseasonal variation of gravity waves in the southern hemisphere tropical stratosphere revealed by high-resolution airs observations |
| Journal Article | FZJ-2016-03387 |
; ; ;
2016
Wiley
Hoboken, NJ
This record in other databases: 
Please use a persistent id in citations: http://hdl.handle.net/2128/16089 doi:10.1002/2015JD024463
Abstract: The intraseasonal variability of gravity waves (GWs) in the austral summer middle stratosphere was examined using dedicated high-resolution temperature retrieval from the Atmospheric Infrared Sounder data. Composite maps were made of stratospheric GW temperature variances, large-scale zonal winds around the tropopause, and precipitation based on the real-time multivariate Madden-Julian Oscillation (MJO) index. Regional distributions of these quantities are synchronized with the MJO: The GW variances are larger for stronger precipitation, and for more strongly westward wind around the tropopause at a given precipitation. These results suggest that the GWs observed by AIRS in the stratosphere originate from convection. Moreover, it is shown that the zonal wind around the tropopause likely controls the GW propagation into the stratosphere by a critical level filtering mechanism and/or the GW generation by an obstacle source effect. This means that the MJO can modulate the middle atmospheric circulation by regulating the GWs in two ways, namely, generation and propagation.
; 
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection
|
The record appears in these collections: |
PDF
PDF (PDFA)