The 600-800-mb minimum in tropical cloudiness observed during TOGA COARE

From: Journal of the Atmospheric Sciences | Date: June 15, 1998| Author: | Copyright information

ABSTRACT

A minimum in cloud coverage occurring between 800 and 600 mb can be inferred from soundings taken within the tropical western Pacific warm pool. Surface observations of clouds and satellite-derived outgoing longwave radiation values suggest that the cloud minimum in the 600-800-mb layer occurs in all weather conditions. One explanation for the enhanced occurrence of clouds above (in the 400-600-mb layer) and their diminished occurrence within the 600-800-mb layer is a preferential cloud detrainment from convection into the more stable levels existing at pressures below 600 mb and ...

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