GSTDTAP  > 气候变化
DOI10.1002/2017JD027629
A Case Study of Low-Level Jets in Yerevan Simulated by the WRF Model
Gevorgyan, Artur1,2
2018-01-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:1页码:300-314
文章类型Article
语种英语
国家Armenia
英文摘要

Capabilities of high-resolution (3 km) Weather Research and Forecasting (WRF) simulations to reproduce topographically induced mountain-valley winds and low-level jets (LLJs) in Yerevan have been evaluated using high-frequency observational and modeled data. High sensitivities of simulations of near-surface winds and LLJ characteristics observed on 4 July 2015 to both boundary layer and initial and lateral boundary conditions setup have been demonstrated. Among the nine tested planetary boundary layer (PBL) parameterization schemes the MYJ, QNSE, and TEMF PBL schemes showed greater skill in simulation of near-surface valley winds over Yerevan, while the other PBL schemes tend to significantly underestimate the strength of valley winds, with the BouLac PBL scheme being the worst performer. Most of PBL schemes simulate well-defined LLJs in Yerevan associated with evening valley winds. The simulated jet cores are mostly located between 150 and 250 m above ground with magnitudes varying from 12 to 21 m s(-1). However, the intensity of the observed nocturnal LLJ in Yerevan (located at 110 m above ground) is strongly underestimated by most of the WRF runs while the Shin and Hong and YSU PBL schemes simulate nocturnal LLJs higher than the observed LLJ. The WRF runs initiated with newly released European Centre for Medium-Range Weather Forecasts ERA-5 data set showed improved simulation of near-surface winds and nighttime potential temperatures in Yerevan relative to those forced by the Global Forecast System fields.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000423433500017
WOS关键词ATMOSPHERIC BOUNDARY-LAYER ; VALLEY-WIND SYSTEM ; PART I ; WEATHER RESEARCH ; PARAMETERIZATION ; TURBULENCE ; SURFACE ; REPRESENTATION ; CONVECTION ; COORDINATE
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/33782
专题气候变化
作者单位1.Serv Hydrometeorol & Act Influence Atmospher Phen, Dept Dev & Validat Hydrometeorol Models, Yerevan, Armenia;
2.Natl Acad Sci Armenia, Inst Informat & Automat Problems, Yerevan, Armenia
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Gevorgyan, Artur. A Case Study of Low-Level Jets in Yerevan Simulated by the WRF Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(1):300-314.
APA Gevorgyan, Artur.(2018).A Case Study of Low-Level Jets in Yerevan Simulated by the WRF Model.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(1),300-314.
MLA Gevorgyan, Artur."A Case Study of Low-Level Jets in Yerevan Simulated by the WRF Model".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.1(2018):300-314.
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