Combining satellite data and models to estimate cloud radiative effect at the surface and in the atmosphere

作者: Richard P. Allan

DOI: 10.1002/MET.285

关键词: Cloud feedbackAtmospheric radiative transfer codesMarine stratocumulusMeteorologyAtmospheric sciencesCloud forcingEnvironmental scienceRadiative fluxParametrization (atmospheric modeling)Liquid water contentRadiative cooling

摘要: Satellite measurements and numerical forecast model reanalysis data are used to compute an updated estimate of the cloud radiative effect on global multi-annual mean energy budget atmosphere surface. The cooling through reflection short wave radiation dominates over long heating effect, resulting in a net climate system − 21 Wm−2. is primarily manifest as reduction solar absorbed at surface 53 Clouds impact by moist tropical (up around 40 Wm−2 for annual means) while enhancing other regions, particular higher latitudes sub-tropical marine stratocumulus regimes. While clouds act cool during daytime, greenhouse heats night. influence determining feedbacks changes water cycle discussed. Copyright © 2011 Royal Meteorological Society

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