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Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM
Xie, Xiaoning1; Liu, Xiaodong1,2; Che, Huizheng3; Xie, Xiaoxun1; Wang, Hongli4; Li, Jiandong5; Shi, Zhengguo1; Liu, Yangang6
2018-01-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷号123期号:2页码:1079-1096
文章类型Article
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.
关键词Cam4-bam Dust-radiation Interaction Dust Cycle
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/2017JD027343
关键词[WOS]REGIONAL CLIMATE MODEL ; LAST GLACIAL MAXIMUM ; GLOBAL DISTRIBUTION ; REFRACTIVE-INDEX ; PARTICLE-SHAPE ; AEROSOLS ; SIMULATION ; SENSITIVITY ; IMPACT ; CYCLE
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000425520200027
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5196
专题古环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian, Shaanxi, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
3.Chinese Acad Meteorol Sci, Inst Atmospher Composit, Key Lab Atmospher Chem, CMA, Beijing, Peoples R China
4.Shaanxi Radio & TV Univ, Sch Tourism & Hospitality Management, Xian, Shaanxi, Peoples R China
5.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China
6.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA
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Xie, Xiaoning,Liu, Xiaodong,Che, Huizheng,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 Xie, Xiaoning.,Liu, Xiaodong.,Che, Huizheng.,Xie, Xiaoxun.,Wang, Hongli.,...&Liu, Yangang.(2018).Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(2),1079-1096.
MLA Xie, Xiaoning,et al."Modeling East Asian Dust and Its Radiative Feedbacks in CAM4-BAM".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.2(2018):1079-1096.
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