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          Institute: MPI für Meteorologie     Collection: Atmosphere in the Earth System     Display Documents



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ID: 224128.0, MPI für Meteorologie / Atmosphere in the Earth System
Impact of monsoon circulations on the upper troposphere and lower stratosphere
Authors:Gettelman, A.; Kinnison, D. E.; Dunkerton, T. J.; Brasseur, Guy P.
Language:English
Date of Publication (YYYY-MM-DD):2004-11-17
Title of Journal:Journal of Geophysical Research-Atmospheres
Journal Abbrev.:J. Geophys. Res.-Atmos.
Volume:109
Issue / Number:D22
Sequence Number of Article:D22101
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Observations from in situ aircraft and output from a global chemical transport model are used to better understand the impact of Northern Hemisphere summer monsoon circulations on stratosphere-troposphere exchange. A long-term model climatology resembles the satellite climatology of water vapor and ozone in the monsoon regions. A simulation with observed winds is able to reproduce individual transport events observed from aircraft, and these events are used to infer that large-scale motions and monsoon circulations can explain the global correlations of ozone and water vapor around the tropopause. A detailed analysis of model fluxes of water vapor and ozone indicates that the Asian monsoon circulation may contribute 75% of the total net upward water vapor flux in the tropics at tropopause levels from July to September. Some of this air may enter the tropical stratosphere and bypass the tropical tropopause altogether
Free Keywords:monsoon; stratosphere; ozone; TROPICAL TROPOPAUSE TEMPERATURES; CHEMICAL-TRANSPORT MODELS; WATER-VAPOR; TAPE-RECORDER; CONVECTION; DRAIN; CYCLE
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:Carola Kauhs
Affiliations:MPI für Meteorologie/The Atmosphere in the Earth System
External Affiliations:Natl Ctr Atmospher Res, Boulder, CO 80307 USA.; NW Res Associates Inc, Bellevue, WA 98007 USA.
Identifiers:ISI:000225400100005
ISSN:0148-0227
DOI:10.1029/2004JD004878,
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