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dc.contributor.authorWang, Z.
dc.contributor.authorChang, C.-P.
dc.date.accessioned2013-09-25T22:59:57Z
dc.date.available2013-09-25T22:59:57Z
dc.date.issued2007
dc.identifier.citationWang, Z. and C.-P. Chang, 2007: Mechanism of the Asymmetric Monsoon Transition as Simulated in an AGCM. 21, J. Climate, 1829-1836. (manuscript)
dc.identifier.urihttps://hdl.handle.net/10945/36676
dc.descriptionJ. Climate, 1829-1836. (manuscript)en_US
dc.description.abstractAtmospheric general circulation model (AGCM) simulations are carried out to test a hypothesis (Chang et al. 2005) for the asymmetric monsoon transition in which the maximum convection marches gradually from the Asian summer monsoon to the Asian winter monsoon during boreal fall but experiences a sudden transition in the reverse during boreal spring. In the control run, the AGCM is driven by the climatological mean sea-surface temperature (SST) with a realistic annual cycle, and it reproduces the observed asymmetric monsoon transition. In the sensitivity test, the model is driven by a similarly realistic SST but whose annual cycle is symmetric. The northwestward march of the maximum convection in boreal spring becomes more gradual, resulting in an overall nearsymmetric pattern for the monsoon seasonal transition. The AGCM simulations confirm the hypothesis that the atmospheric mass redistribution due to the different land–ocean thermal memories leads to a seasonally different horizontal convergence field and it facilitates the southeastward monsoon march in boreal fall while hinders the northwestward monsoon march in boreal spring, contributing to the asymmetric monsoon transition.Atmospheric general circulation model (AGCM) simulations are carried out to test a hypothesis (Chang et al. 2005) for the asymmetric monsoon transition in which the maximum convection marches gradually from the Asian summer monsoon to the Asian winter monsoon during boreal fall but experiences a sudden transition in the reverse during boreal spring. In the control run, the AGCM is driven by the climatological mean sea-surface temperature (SST) with a realistic annual cycle, and it reproduces the observed asymmetric monsoon transition. In the sensitivity test, the model is driven by a similarly realistic SST but whose annual cycle is symmetric. The northwestward march of the maximum convection in boreal spring becomes more gradual, resulting in an overall nearsymmetric pattern for the monsoon seasonal transition. The AGCM simulations confirm the hypothesis that the atmospheric mass redistribution due to the different land–ocean thermal memories leads to a seasonally different horizontal convergence field and it facilitates the southeastward monsoon march in boreal fall while hinders the northwestward monsoon march in boreal spring, contributing to the asymmetric monsoon transition.en_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleMechanism of the Asymmetric Monsoon Transition as Simulated in an AGCMen_US


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