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| Titel |
Influences of the Indian Summer Monsoon on tracer concentrations in the UTLS as simulated by chemistry climate models |
| VerfasserIn |
M. Kunze, U. Langematz, P. Braesicke, S. Bekki, C. Brühl, M. Chipperfield, M. Dameris, R. García, M. Giorgetta, G. Stiller |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250025093
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| Zusammenfassung |
| The Indian summer Monsoon (ISM) is a major source of interannual variability
on the northern hemisphere. It is a significant moisture source for the upper
troposphere outside the deep tropics with a potential to moisten the lower
stratosphere.
The current generation of IPCC coupled ocean-atmosphere climate models
shows variable skill in capturing aspects of the monsoon variability.
Here, we study the ability of current chemistry-climate models to capture the
climatology of the ISM and its impact on water vapour and ozone.
We use REF1/REF2 simulations of five chemistry climate models (CCMs) performed
for the WMO/UNEP assessment of stratospheric ozone 2006, which are driven with
prescribed (observed) sea-surface temperatures, assessing their mean ISM,
their ISM related transport regimes as manifested in water vapour and ozone,
and their interannual variability of the ISM and its impact on tracers in
comparison with reanalyses and MIPAS satellite data.
Two questions form the main focus: Are the models capable to capture the
mean state of the upper tropospheric/lower stratospheric ISM anticyclone?
Are the models able to capture the observed inter-annual variability
of the ISM anticyclone? |
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