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The 600–800-mb Minimum in Tropical Cloudiness Observed during TOGA COARE

The 600–800-mb Minimum in Tropical Cloudiness Observed during TOGA COARE 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 above 800 mb. This mechanism is supported by the results of a buoyancy-sorting model. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Atmospheric Sciences American Meteorological Society

The 600–800-mb Minimum in Tropical Cloudiness Observed during TOGA COARE

Journal of the Atmospheric Sciences , Volume 55 (12) – Jan 7, 1997

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Publisher
American Meteorological Society
Copyright
Copyright © 1997 American Meteorological Society
ISSN
1520-0469
DOI
10.1175/1520-0469(1998)055<2220:TMMITC>2.0.CO;2
Publisher site
See Article on Publisher Site

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 above 800 mb. This mechanism is supported by the results of a buoyancy-sorting model.

Journal

Journal of the Atmospheric SciencesAmerican Meteorological Society

Published: Jan 7, 1997

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