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Weather Research and Forecasting model simulations of a rare springtime bow echo near the Great Salt Lake, USA

文献类型:期刊论文

作者Zhao, L.1,2,3; Wang, S-Y.1,4; Jin, J.1,2; Clark, A. J.5,6
刊名METEOROLOGICAL APPLICATIONS
出版日期2015-07-01
卷号22期号:3页码:301-313
关键词modelling forecasting numerical simulation bow echo Great Salt Lake
ISSN号1350-4827
DOI10.1002/met.1455
通讯作者Wang, S-Y.(simon.wang@usu.edu)
英文摘要The semiarid climate and rugged terrain in the interior west of the United States do not favour the development of bow echoes, a type of convective storm associated with intense, damaging winds. However, on 21 April 2011, a bow echo associated with a fast-moving midtropospheric perturbation formed across the Great Salt Lake (GSL) in Utah, producing damaging winds along its path. Intrigued by the rarity of this bow echo and the inability of the North American Mesoscale model (NAM) to forecast it, this event was studied by using available observations and conducted simulations with the Advanced Research Weather Research and Forecasting (WRF) model. Sensitivity to the microphysics schemes (MPSs), horizontal grid spacing, intensity of moisture content, and a physical lake model in the WRF model were examined. It was found that: (a) reduction in grid spacing from 12 and 4km to 1km along with improved depiction of low-level moisture substantially improved the bow echo simulation, (b) the presence of GSL did not impact bow echo development, and (c) the WRF model appeared to inherit a phase error in the passage of the midtropospheric perturbation from the NAM initial and lateral boundary conditions. The phase error resulted in a 1-2h delay in the bow echo passage. These results highlight the difficulties in simulating such a bow echo event, and suggest similar challenges future faced by subsequent regional climate downscaling studies on future extreme weather in the western United States.
收录类别SCI
WOS关键词CONVECTIVE ADJUSTMENT SCHEME ; LOW-LEVEL MESOVORTICES ; UNITED-STATES ; PART II ; BULK PARAMETERIZATION ; WINTER PRECIPITATION ; COORDINATE MODEL ; SQUALL LINES ; CLIMATOLOGY ; GENESIS
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
语种英语
WOS记录号WOS:000357882500002
出版者WILEY-BLACKWELL
URI标识http://www.irgrid.ac.cn/handle/1471x/2557089
专题寒区旱区环境与工程研究所
通讯作者Wang, S-Y.
作者单位1.Utah State Univ, Dept Plants Soils & Climate, Logan, UT 84321 USA
2.Utah State Univ, Dept Watershed Sci, Logan, UT 84321 USA
3.Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China
4.Utah State Univ, Utah Climate Ctr, Logan, UT 84321 USA
5.Univ Oklahoma, Cooperat Inst Mesoscale Meteorol Studies, Norman, OK 73019 USA
6.NOAA, OAR Natl Severe Storms Lab, Norman, OK USA
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Zhao, L.,Wang, S-Y.,Jin, J.,et al. Weather Research and Forecasting model simulations of a rare springtime bow echo near the Great Salt Lake, USA[J]. METEOROLOGICAL APPLICATIONS,2015,22(3):301-313.
APA Zhao, L.,Wang, S-Y.,Jin, J.,&Clark, A. J..(2015).Weather Research and Forecasting model simulations of a rare springtime bow echo near the Great Salt Lake, USA.METEOROLOGICAL APPLICATIONS,22(3),301-313.
MLA Zhao, L.,et al."Weather Research and Forecasting model simulations of a rare springtime bow echo near the Great Salt Lake, USA".METEOROLOGICAL APPLICATIONS 22.3(2015):301-313.

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来源:寒区旱区环境与工程研究所

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