Evaluation of the WRF PBL Parameterizations for Marine Boundary Layer Clouds: Cumulus and Stratocumulus

Author:

Huang Hsin-Yuan1,Hall Alex2,Teixeira Joao3

Affiliation:

1. Joint Institute for Regional Earth System Science and Engineering, University of California, Los Angeles, Los Angeles, California

2. Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, California

3. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California

Abstract

Abstract The performance of five boundary layer parameterizations in the Weather Research and Forecasting Model is examined for marine boundary layer cloud regions running in single-column mode. Most parameterizations show a poor agreement of the vertical boundary layer structure when compared with large-eddy simulation models. These comparisons against large-eddy simulation show that a parameterization based on the eddy-diffusivity/mass-flux approach provides a better performance. The results also illustrate the key role of boundary layer parameterizations in model performance.

Publisher

American Meteorological Society

Subject

Atmospheric Science

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3. Caesar, K. , 2005: Summary of the weather during the RICO project. NCAR/EOL, 30 pp. [Available online http://www.eol.ucar.edu/rico.]

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