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Evolution of tropical plumes in VAS water vapor imagerySynoptic scale tropical plumes are analyzed using satellite data and outgoing longwave radiation data. The evolution of plumes is described and their precursor signals are examined. The horizontal moisture patterns of the plumes are compared with nonplume climatology, and the predictability of plumes based solely on satellite imagery is assessed. The results show that a plume evolves as a stationary, tropical, dry or moist dipole, separated by an exceptionally strong cloud or moisture gradient. Tropical plume evolution is accompanied by a systematic drying of the tropical eastern Pacific atmosphere before development, and moistening and increased cloudiness with development.
Document ID
19910025875
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcguirk, James P.
(Texas A&M Univ. College Station, TX, United States)
Ulsh, David J.
(Texas A & M University College Station, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1990
Publication Information
Publication: Monthly Weather Review
Volume: 118
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
91A10498
Distribution Limits
Public
Copyright
Other

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