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Role of a cumulus parameterization scheme in simulating atmospheric circulation and rainfall in the nine-layer Goddard Laboratory for Atmospheres General Circulation ModelThe influence of a cumulus convection scheme on the simulated atmospheric circulation and hydrologic cycle is investigated by means of a coarse version of the GCM. Two sets of integrations, each containing an ensemble of three summer simulations, were produced. The ensemble sets of control and experiment simulations are compared and differentially analyzed to determine the influence of a cumulus convection scheme on the simulated circulation and hydrologic cycle. The results show that cumulus parameterization has a very significant influence on the simulation circulation and precipitation. The upper-level condensation heating over the ITCZ is much smaller for the experiment simulations as compared to the control simulations; correspondingly, the Hadley and Walker cells for the control simulations are also weaker and are accompanied by a weaker Ferrel cell in the Southern Hemisphere. Overall, the difference fields show that experiment simulations (without cumulus convection) produce a cooler and less energetic atmosphere.
Document ID
19920050746
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sud, Y. C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chao, Winston C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Walker, G. K.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 15, 2013
Publication Date
April 1, 1992
Publication Information
Publication: Monthly Weather Review
Volume: 120
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
92A33370
Distribution Limits
Public
Copyright
Other

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