DOI: 10.1002/jgrd.50823
论文题名: Evaluation of the updated YSU planetary boundary layer scheme within WRF for wind resource and air quality assessments
作者: Hu X.-M. ; Klein P.M. ; Xue M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 18 起始页码: 10490
结束页码: 10505
语种: 英语
英文关键词: low-level jet
; nighttime boundary layer
; ozone
; planetary boundary layer scheme
; wind resource
; WRF/Chem
Scopus关键词: Air quality
; Atmospheric movements
; Atmospheric temperature
; Atmospheric thermodynamics
; Boundary layers
; Ozone
; Wind power
; Low level jet
; Nighttime boundary layers
; Planetary boundary layers
; Wind resources
; WRF/Chem
; Weather forecasting
; air quality
; atmospheric chemistry
; boundary layer
; climate modeling
; climate variation
; estimation method
; planetary atmosphere
; simulation
; vertical mixing
; wind field
; Great Plains
英文摘要: In previous studies, the Yonsei University (YSU) planetary boundary layer (PBL) scheme implemented in the Weather Research and Forecasting (WRF) model was reported to perform less well at night, while performing better during the day. Compared to observations, predicted nocturnal low-level jets (LLJs) were typically weaker and higher. Also, the WRF model with Chemistry (WRF/Chem) with the YSU scheme was reported to sometimes overestimate near-surface ozone (O 3 ) concentration during the nighttime. The updates incorporated in WRF version 3.4.1, include modifications of the nighttime velocity scale used in the YSU boundary layer scheme. The impacts of this update on the prediction of nighttime boundary layers and related implications for wind resource assessment and air quality simulations are examined in this study. The WRF/Chem model with the updated YSU scheme predicts smaller eddy diffusivities in the nighttime boundary layer, and consequently lower and stronger LLJs over a domain focusing on the southern Great Plains area, showing a better agreement with the observations. As a result, related overestimation problems for near-surface temperature and wind speeds appear to be resolved, and the nighttime minimum near-surface O3 concentrations are better captured. Simulated vertical distributions of meteorological and chemical variables for weak wind regimes (e.g., in the absence of LLJ) are less impacted by the YSU updates. Key Points Overestimation of nighttime O3 is related to overestimation of surface windEnhanced vertical mixing partially caused the nighttime O3 overestimationThe updated YSU can provide better wind resource assessment ©2013. American Geophysical Union. All Rights Reserved. 资助项目: 0547882
; AGS-0750790
; AGS-0802888
; AGS-0941491
; AGS-1046081
; AGS-1046171
; OCI-0905040
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63312
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Center for Analysis and Prediction of Storms, University of Oklahoma, Norman, OK 73072, United States; School of Meteorology, University of Oklahoma, Norman, OK, United States
Recommended Citation:
Hu X.-M.,Klein P.M.,Xue M.. Evaluation of the updated YSU planetary boundary layer scheme within WRF for wind resource and air quality assessments[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(18)