DOI: 10.1016/j.atmosenv.2017.12.014
Scopus记录号: 2-s2.0-85038242085
论文题名: Fine-scale application of WRF-CAM5 during a dust storm episode over East Asia: Sensitivity to grid resolutions and aerosol activation parameterizations
作者: Wang K ; , Zhang Y ; , Zhang X ; , Fan J ; , Leung L ; R ; , Zheng B ; , Zhang Q ; , He K
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 176 起始页码: 1
结束页码: 20
语种: 英语
英文关键词: Adsorptive activation
; Aerosol activation
; Dust storm
; East Asia
; Nested simulations
; WRF-CAM5
Scopus关键词: Aerosols
; Air quality
; Chemical activation
; Dust
; Meteorology
; Quality control
; Storms
; Wind
; Aerosol-cloud interaction
; Cloud droplet number concentrations
; Coupled meteorology and chemistry models
; Dust storm
; East Asia
; Nested simulation
; Water vapor mixing ratio
; WRF-CAM5
; Precipitation (meteorology)
; adsorption
; aerosol
; air quality
; cloud droplet
; dust storm
; longwave radiation
; meteorology
; parameterization
; regional climate
; simulation
; water vapor
; wind direction
; wind velocity
; aerosol
; air quality
; Article
; Asia
; chemistry
; climate
; cloud
; dust
; meteorology
; precipitation
; priority journal
; simulation
; temperature
; water vapor
; wind
; Far East
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: An advanced online-coupled meteorology and chemistry model WRF-CAM5 has been applied to East Asia using triple-nested domains at different grid resolutions (i.e., 36-, 12-, and 4-km) to simulate a severe dust storm period in spring 2010. Analyses are performed to evaluate the model performance and investigate model sensitivity to different horizontal grid sizes and aerosol activation parameterizations and to examine aerosol-cloud interactions and their impacts on the air quality. A comprehensive model evaluation of the baseline simulations using the default Abdul-Razzak and Ghan (AG) aerosol activation scheme shows that the model can well predict major meteorological variables such as 2-m temperature (T2), water vapor mixing ratio (Q2), 10-m wind speed (WS10) and wind direction (WD10), and shortwave and longwave radiation across different resolutions with domain-average normalized mean biases typically within ±15%. The baseline simulations also show moderate biases for precipitation and moderate-to-large underpredictions for other major variables associated with aerosol-cloud interactions such as cloud droplet number concentration (CDNC), cloud optical thickness (COT), and cloud liquid water path (LWP) due to uncertainties or limitations in the aerosol-cloud treatments. The model performance is sensitive to grid resolutions, especially for surface meteorological variables such as T2, Q2, WS10, and WD10, with the performance generally improving at finer grid resolutions for those variables. Comparison of the sensitivity simulations with an alternative (i.e., the Fountoukis and Nenes (FN) series scheme) and the default (i.e., AG scheme) aerosol activation scheme shows that the former predicts larger values for cloud variables such as CDNC and COT across all grid resolutions and improves the overall domain-average model performance for many cloud/radiation variables and precipitation. Sensitivity simulations using the FN series scheme also have large impacts on radiations, T2, precipitation, and air quality (e.g., decreasing O3) through complex aerosol-radiation-cloud-chemistry feedbacks. The inclusion of adsorptive activation of dust particles in the FN series scheme has similar impacts on the meteorology and air quality but to lesser extent as compared to differences between the FN series and AG schemes. Compared to the overall differences between the FN series and AG schemes, impacts of adsorptive activation of dust particles can contribute significantly to the increase of total CDNC (∼45%) during dust storm events and indicate their importance in modulating regional climate over East Asia. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83031
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Marine, Earth, and Atmospheric Sciences, NCSU, Raleigh, NC, United States; Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China; Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing, China; Collaborative Innovation Center for Regional Environmental Quality, Beijing, China
Recommended Citation:
Wang K,, Zhang Y,, Zhang X,et al. Fine-scale application of WRF-CAM5 during a dust storm episode over East Asia: Sensitivity to grid resolutions and aerosol activation parameterizations[J]. Atmospheric Environment,2018-01-01,176