气候变化领域集成服务门户(CCPortal): Sensitivity analysis of the dust emission treatment in CMAQv5.2.1 and its application to long-range transport over East Asia

CCPortal

DOI	10.1016/j.atmosenv.2021.118441
	Sensitivity analysis of the dust emission treatment in CMAQv5.2.1 and its application to long-range transport over East Asia
	Kong S.S.-K.; Fu J.S.; Dong X.; Chuang M.-T.; Ooi M.C.G.; Huang W.-S.; Griffith S.M.; Pani S.K.; Lin N.-H.
发表日期	2021
ISSN	1352-2310
卷号	257
英文摘要	East Asian Dust (EAD) has had a measurable impact on global climate and air quality, including visibility and human health, in numerous locations around the globe over the past decade. The accuracy of an air quality modeling system to simulate dust events is vital for early warning systems. The most significant dust event observed in 6 years for northern Taiwan occurred during 4th–9th April 2018, and was characterized by high wind speeds (9–13 m s−1) upon arrival to the region. We assessed the windblown dust emission treatment across various modifications and found better model performance by decreasing the soil moisture factor and updating the aerosol speciation profile over East Asia. In the optimized CMAQ simulation, uplifted dust particles reached a maximum height of 500–700 hPa, which is crucial for effective transport of the dust plume to the downwind Taiwan region. However, by tracking the vertical distribution profile, we found the model was insufficient to estimate dust aerosol after exiting from over the continent and entering the marine boundary layer. Our simulation indicated the dust event consisted of two plumes, where the first one was significantly impacted by wet deposition (−70.65%) from a rainfall belt stretching across Japan, Korea and the East China Sea. Then, low wind speed during a period of no precipitation over the marine area led to even greater dust deposition (−89.11%) from the second plume, resulting in a consistent negative bias for the simulation. This modeling study highlights the importance of improving the dust emission treatment for a better simulation of dust aerosol transport over the marine boundary layer. To reduce the uncertainty in the dust outflow region, the deposition mechanisms for the CMAQ dust treatment should be revised. © 2021
关键词	Air quality modeling East asian dust event Long-range transport Taiwan
语种	英语
scopus关键词	Aerosols; Boundary layers; Deposition; Dust; Sensitivity analysis; Soil moisture; Wind; Air quality modelling; Dust aerosols; Dust emission; Dust event; East Asia; East asian dust event; ITS applications; Long range transport; Marine boundary layers; Taiwan; Air quality; aluminum; ammonia; calcium; carbon; iron; magnesium; manganese; nitrate; organic carbon; organic matter; potassium; rain; silicon; sodium; sodium chlorite; sulfate; titanium; water; aerosol; air quality; atmospheric plume; boundary layer; dust; early warning system; emission; global climate; long range transport; marine environment; sensitivity analysis; simulation; vertical distribution; aerosol; air quality; boundary layer; China; dust; East Asian; East China Sea; human; Japan; meteorology; plume; precipitation; sensitivity analysis; soil moisture; temperature; wet deposition; wind speed; East China Sea; Japan; Korea; Pacific Ocean; Taiwan
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248384
作者单位	Department of Atmospheric Sciences, National Central University, Taoyuan, 32001, Taiwan; Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN 37996, United States; Research Center for Environmental Changes, Academia SinicaTaipei 11529, Taiwan; Institute of Climate Change, National University of Malaysia (UKM), Bangi, 43600, Malaysia; Center for Environmental Monitoring and Technology, National Central University, Taoyuan, 32001, Taiwan
推荐引用方式 GB/T 7714	Kong S.S.-K.,Fu J.S.,Dong X.,et al. Sensitivity analysis of the dust emission treatment in CMAQv5.2.1 and its application to long-range transport over East Asia[J],2021,257.
APA	Kong S.S.-K..,Fu J.S..,Dong X..,Chuang M.-T..,Ooi M.C.G..,...&Lin N.-H..(2021).Sensitivity analysis of the dust emission treatment in CMAQv5.2.1 and its application to long-range transport over East Asia.ATMOSPHERIC ENVIRONMENT,257.
MLA	Kong S.S.-K.,et al."Sensitivity analysis of the dust emission treatment in CMAQv5.2.1 and its application to long-range transport over East Asia".ATMOSPHERIC ENVIRONMENT 257(2021).