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A high-resolution model of the planetary boundary layer - Sensitivity tests and comparisons with SESAME-79 dataA one-dimensional, planetary boundary layer (PBL) model is presented and verified using April 10, 1979 SESAME data. The model contains two modules to account for two different regimes of turbulent mixing. Separate parameterizations are made for stable and unstable conditions, with a predictive slab model for surface temperature. Atmospheric variables in the surface layer are calculated with a prognostic model, with moisture included in the coupled surface/PBL modeling. Sensitivity tests are performed for factors such as moisture availability, albedo, surface roughness, and thermal capacity, and a 24 hr simulation is summarized for day and night conditions. The comparison with the SESAME data comprises three hour intervals, using a time-dependent geostrophic wind. Close correlations were found with daytime conditions, but not in nighttime thermal structure, while the turbulence was faithfully predicted. Both geostrophic flow and surface characteristics were shown to have significant effects on the model predictions
Document ID
19830036221
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Zhang, D.
(Pennsylvania State University University Park, PA, United States)
Anthes, R. A.
(National Center for Atmospheric Research Boulder, CO, United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1982
Publication Information
Publication: Journal of Applied Meteorology
Volume: 21
Subject Category
Meteorology And Climatology
Accession Number
83A17439
Funding Number(s)
CONTRACT_GRANT: NSG-5205
Distribution Limits
Public
Copyright
Other

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