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DOI	10.1016/j.atmosenv.2021.118348
	Impacts of climate and land cover variability and trends on springtime East Asian dust emission over 1982-2010: A modeling study
	Tai, Amos P. K.; Ma, Perry H. L.; Chan, Yuk-Chun; Chow, Ming-Keung; Ridley, David A.; Kok, Jasper F.
通讯作者	Tai, APK (corresponding author), Chinese Univ Hong Kong, Fac Sci, Earth Syst Sci Programme, Sha Tin, Hong Kong, Peoples R China. ; Tai, APK (corresponding author), Chinese Univ Hong Kong, Fac Sci, Grad Div Earth & Atmospher Sci, Sha Tin, Hong Kong, Peoples R China.
来源期刊	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
EISSN	1873-2844
出版年	2021
卷号	254
英文摘要	Mineral dust is an important player in global air quality and climate, but little is known about its variability and trends under the simultaneous influence of climate and land cover changes, particularly in East Asia where intense land cover change has occurred in recent decades. Here we determined the interannual variability and trends in dust emission from the main East Asian dust sources and examined to what extent these variations and trends were driven by climatic or land cover changes. We first optimized the dust emission module in the GEOS-Chem chemical transport model with better representation of dust physics and dependence on vegetation and wind variability. We then conducted simulations to quantify the impacts of climate and land cover variability and trends on springtime dust emission over 1982-2010 from the Teklimakan Desert, Gobi Desert and the whole East Asian desert domain. We found that dust emission from Gobi decreased substantially from the 1980s to 1990s, and then slightly increased toward the 2000s, leading to an overall reduction by 35% over the whole period. These changes were predominantly driven by meteorological changes and the effects of land cover change were negligible. Dust emission from Teklimakan increased from the 1980s to 1990s, but decreased afterward, leading to an overall reduction by 20%, albeit with large interannual variability. The overall trend was attributable to a consistent reduction in dust emission due to enhanced vegetation density in the periphery of the desert, accompanied by larger but more varying changes due to meteorological factors. Time series comparison and regression analysis indicated that in both deserts (especially Gobi), surface wind speed, followed by total precipitation, was the most important meteorological factor controlling dust variability and trends, with the weakening of wind playing the largest role in the overall decline in dust emission over the whole period. Overall, the interannual variability and trends of East Asian dust emission are largely shaped by climatic factors, with the land cover playing secondary but locally important roles, especially in the semiarid and non-desert regions undergoing rapid land cover change and desertification.
英文关键词	East Asian dust Dust emission Climate change Land cover change Chemical transport model
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000653427800001
WOS关键词	MINERAL DUST ; DESERT DUST ; SIZE DISTRIBUTION ; AIR-POLLUTION ; SUMMER DUST ; WIND-SPEED ; TRANSPORT ; AEROSOLS ; SIMULATION ; SURFACE
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	University of California, Los Angeles
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349642
作者单位	[Tai, Amos P. K.; Ma, Perry H. L.; Chow, Ming-Keung] Chinese Univ Hong Kong, Fac Sci, Earth Syst Sci Programme, Sha Tin, Hong Kong, Peoples R China; [Tai, Amos P. K.; Ma, Perry H. L.; Chow, Ming-Keung] Chinese Univ Hong Kong, Fac Sci, Grad Div Earth & Atmospher Sci, Sha Tin, Hong Kong, Peoples R China; [Tai, Amos P. K.] Chinese Univ Hong Kong, State Key Lab Agrobiotechnol, Sha Tin, Hong Kong, Peoples R China; [Tai, Amos P. K.] Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Sha Tin, Hong Kong, Peoples R China; [Chan, Yuk-Chun] Univ Washington, Dept Atmospher & Ocean Sci, Seattle, WA 98195 USA; [Ridley, David A.] Calif Air Resources Board, Monitoring & Lab Div, Sacramento, CA USA; [Kok, Jasper F.] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA
推荐引用方式 GB/T 7714	Tai, Amos P. K.,Ma, Perry H. L.,Chan, Yuk-Chun,et al. Impacts of climate and land cover variability and trends on springtime East Asian dust emission over 1982-2010: A modeling study[J]. University of California, Los Angeles,2021,254.
APA	Tai, Amos P. K.,Ma, Perry H. L.,Chan, Yuk-Chun,Chow, Ming-Keung,Ridley, David A.,&Kok, Jasper F..(2021).Impacts of climate and land cover variability and trends on springtime East Asian dust emission over 1982-2010: A modeling study.ATMOSPHERIC ENVIRONMENT,254.
MLA	Tai, Amos P. K.,et al."Impacts of climate and land cover variability and trends on springtime East Asian dust emission over 1982-2010: A modeling study".ATMOSPHERIC ENVIRONMENT 254(2021).