Some Sensitivity Evaluations of Potential 2xCO2 Climate Impact on Deep Convection over Water Bodies

M. Segal Department of physics and Astronomy, University of kansas, Lawrence, Kansas

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M. J. Mitchell Department of physics and Astronomy, University of kansas, Lawrence, Kansas

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R. W. Arritt Department of physics and Astronomy, University of kansas, Lawrence, Kansas

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Abstract

A boundary-layer numerical model was used to evaluate the impact of GCMs’ predicted 2xCO2 climate on surface thermal fluxes over water bodies, in situations conducive to deep convection following short-range airmass transformation. Multiple one-dimensional simulations, covering the commonly observed ranges of SST and surface winds, indicate suppression of the sensible heal fluxes and almost unchanged latent fluxes for the 2xCO2 climate. Consequently, in most situations the potential for deep convection was slightly reduced.

Abstract

A boundary-layer numerical model was used to evaluate the impact of GCMs’ predicted 2xCO2 climate on surface thermal fluxes over water bodies, in situations conducive to deep convection following short-range airmass transformation. Multiple one-dimensional simulations, covering the commonly observed ranges of SST and surface winds, indicate suppression of the sensible heal fluxes and almost unchanged latent fluxes for the 2xCO2 climate. Consequently, in most situations the potential for deep convection was slightly reduced.

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