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The parameterization of the planetary boundary layer in the UCLA general circulation model - Formulation and resultsA planetary boundary layer (PBL) parameterization for general circulation models (GCMs) is presented. It uses a mixed-layer approach in which the PBL is assumed to be capped by discontinuities in the mean vertical profiles. Both clear and cloud-topped boundary layers are parameterized. Particular emphasis is placed on the formulation of the coupling between the PBL and both the free atmosphere and cumulus convection. For this purpose a modified sigma-coordinate is introduced in which the PBL top and the lower boundary are both coordinate surfaces. The use of a bulk PBL formulation with this coordinate is extensively discussed. Results are presented from a July simulation produced by the UCLA GCM. PBL-related variables are shown, to illustrate the various regimes the parameterization is capable of simulating.
Document ID
19840038183
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Suarez, M. J.
(NASA Goddard Space Flight Center Laboratory for Atmospheric Sciences, Greenbelt, MD; California, University, Los Angeles, CA, United States)
Arakawa, A.
(California, University Los Angeles, CA, United States)
Randall, D. A.
(NASA Goddard Space Flight Center Laboratory for Atmospheric Sciences, Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1983
Publication Information
Publication: Monthly Weather Review
Volume: 111
ISSN: 0027-0644
Subject Category
Meteorology And Climatology
Accession Number
84A20970
Distribution Limits
Public
Copyright
Other

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