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contributor authorHu, Xiao-Ming
contributor authorNielsen-Gammon, John W.
contributor authorZhang, Fuqing
date accessioned2017-06-09T16:33:47Z
date available2017-06-09T16:33:47Z
date copyright2010/09/01
date issued2010
identifier issn1558-8424
identifier otherams-70042.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211780
description abstractAccurate depiction of meteorological conditions, especially within the planetary boundary layer (PBL), is important for air pollution modeling, and PBL parameterization schemes play a critical role in simulating the boundary layer. This study examines the sensitivity of the performance of the Weather Research and Forecast (WRF) model to the use of three different PBL schemes [Mellor?Yamada?Janjic (MYJ), Yonsei University (YSU), and the asymmetric convective model, version 2 (ACM2)]. Comparison of surface and boundary layer observations with 92 sets of daily, 36-h high-resolution WRF simulations with different schemes over Texas in July?September 2005 shows that the simulations with the YSU and ACM2 schemes give much less bias than with the MYJ scheme. Simulations with the MYJ scheme, the only local closure scheme of the three, produced the coldest and moistest biases in the PBL. The differences among the schemes are found to be due predominantly to differences in vertical mixing strength and entrainment of air from above the PBL. A sensitivity experiment with the ACM2 scheme confirms this diagnosis.
publisherAmerican Meteorological Society
titleEvaluation of Three Planetary Boundary Layer Schemes in the WRF Model
typeJournal Paper
journal volume49
journal issue9
journal titleJournal of Applied Meteorology and Climatology
identifier doi10.1175/2010JAMC2432.1
journal fristpage1831
journal lastpage1844
treeJournal of Applied Meteorology and Climatology:;2010:;volume( 049 ):;issue: 009
contenttypeFulltext


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