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Effect of shallow cumulus convection on the eastern Pacific climate in a coupled model

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dc.creator de Szoeke, Simon P.
dc.creator Wang, Yuqing
dc.creator Xie, Shang-Ping
dc.creator Miyama, Toru
dc.date.accessioned 2012-04-02T17:02:39Z
dc.date.available 2012-04-02T17:02:39Z
dc.date.issued 2006-09-12
dc.identifier.citation de Szoeke, S. P., Y. Wang, S.-P. Xie, and T. Miyama (2006), Effect of shallow cumulus convection on the eastern Pacific climate in a coupled model, Geophysical Research Letters., 33, L17713, doi:10.1029/2006GL026715. en_US
dc.identifier.uri http://hdl.handle.net/1957/28517
dc.description.abstract Shallow cumulus convection evaporates stratocumulus clouds in the atmospheric boundary layer. The effect of shallow convection on the large-scale climate of the eastern tropical Pacific is investigated with a coupled ocean-atmosphere model by disabling the shallow convection parameterization (noSC). Without shallow convection, the stratiform cloud fraction increases and surface solar radiation decreases. The sea surface temperature (SST) cools on average by 2°C. The cooling in noSC is larger under the low cloud deck south of the equator than north of the equator, resulting in an increase in the climatic meridional asymmetry. In the control run an ITCZ forms south of the equator in March-April. In noSC the SST is at most 24°C south of the equator and an ITCZ does not form. The perennial northern-hemisphere ITCZ in noSC is accompanied by year-round southerlies of at least ~3 m s⁻¹ on the equator, considerably reducing the seasonal cycle of equatorial SST. en_US
dc.description.sponsorship This work has been funded by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT) as category 7 of the RR2002 Project, by JAMSTEC, and by the United States National Oceanic and Atmospheric Administration (NOAA). en_US
dc.language.iso en_US en_US
dc.publisher American Geophysical Union en_US
dc.relation.ispartofseries Geophysical Research Letters en_US
dc.relation.ispartofseries Vol. 33, No. L17713 en_US
dc.title Effect of shallow cumulus convection on the eastern Pacific climate in a coupled model en_US
dc.type Article en_US
dc.identifier.doi 10.1029/2006GL026715


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