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Understanding the tropical cloud feedback from an analysis of the circulation and stability regimes simulated from an upgraded multiscale modeling framework
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2016
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Source: Journal of Advances in Modeling Earth Systems, 8(4), 1825-1846
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Journal Title:Journal of Advances in Modeling Earth Systems
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Description:As revealed from studies using conventional general circulation models (GCMs), the thermody- namic contribution to the tropical cloud feedback dominates the dynamic contribution, but these models have difficulty in simulating the subsidence regimes in the tropics. In this study, we analyze the tropical cloud feedback from a 2 K sea surface temperature (SST) perturbation experiment performed with a multi- scale modeling framework (MMF). The MMF explicitly represents cloud processes using 2-D cloud-resolvingmodels with an advanced higher-order turbulence closure in each atmospheric column of the host GCM. We sort the monthly mean cloud properties and cloud radiative effects according to circulation and stability regimes. We find that the regime-sorted dynamic changes dominate the thermodynamic changes in termsof the absolute magnitude. The dynamic changes in the weak subsidence regimes exhibit strong negative
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Source:Journal of Advances in Modeling Earth Systems, 8(4), 1825-1846
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DOI:
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ISSN:1942-2466;1942-2466;
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Rights Information:CC BY-NC-ND
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Compliance:Library
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