Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM

doi:10.1002/2017JD027343

	Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM
	Liu, Yangang 4; Xie, Xiaoning 5; Liu, Xiaodong 5,6; Che, Huizheng 1; Xie, Xiaoxun 5; Wang, Hongli 2; Li, Jiandong 3; Shi, Zhengguo 5
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2018-01-27
卷号	123 期号:2 页码:1079-1096
关键词	Cam4-bam Dust-radiation Interaction Dust Cycle
DOI	10.1002/2017JD027343
文献子类	Article
英文摘要	East Asian dust and its radiative feedbacks are analyzed by the use of the fourth version of the Community Atmosphere Model (CAM4) with a bulk aerosol model parameterization (BAM) for the dust size distribution (CAM4-BAM). Two numerical experiments are conducted and intercompared: one with (Active) and one without (Passive) the radiative effects of dust aerosols. This CAM4-BAM captures the main spatial distribution of the dust aerosol optical depth (AOD) and the dust surface concentrations over East Asia, with positive correlations with the local observational data on annual and seasonal means. A comparative analysis of the Active and Passive experiments reveals that consideration of the dust-radiation interaction can significantly reduce dust emissions, loading, transport, and dry and wet depositions over East Asia, which is opposite to the enhanced dust cycle over North Africa. Further analysis of the contrasting dust-radiation feedbacks between North Africa and East Asia shows that over North Africa, the dust radiative forcing significantly increases the surface temperature and 10m wind speed, whereas it decreases the surface temperature and the surface wind speeds over East Asia. These contrasting radiative effects, in turn, result in distinct dust cycle changes over these two regions. Mechanistic analysis reveals that the radiative contrasts between East Asia and North Africa are mainly due to the differences in their regional surface albedo, dust vertical distribution, and size distribution.
WOS关键词	REGIONAL CLIMATE MODEL ; LAST GLACIAL MAXIMUM ; GLOBAL DISTRIBUTION ; REFRACTIVE-INDEX ; PARTICLE-SHAPE ; AEROSOLS ; SIMULATION ; SENSITIVITY ; IMPACT ; CYCLE
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000425520200027
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/5196]
专题	地球环境研究所_古环境研究室
作者单位	1.Chinese Acad Meteorol Sci, Inst Atmospher Composit, Key Lab Atmospher Chem, CMA, Beijing, Peoples R China 2.Shaanxi Radio & TV Univ, Sch Tourism & Hospitality Management, Xian, Shaanxi, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China 4.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA 5.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China 6.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yangang,Xie, Xiaoning,Liu, Xiaodong,et al. Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(2):1079-1096.
APA	Liu, Yangang.,Xie, Xiaoning.,Liu, Xiaodong.,Che, Huizheng.,Xie, Xiaoxun.,...&Shi, Zhengguo.(2018).Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(2),1079-1096.
MLA	Liu, Yangang,et al."Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.2(2018):1079-1096.