Effects of dust-in-snow forcing over the Tibetan Plateau on the East Asian dust cycle during the Last Glacial Maximum

doi:10.1016/j.palaeo.2019.109442

IEECAS OpenIR > 古环境研究室

	Effects of dust-in-snow forcing over the Tibetan Plateau on the East Asian dust cycle during the Last Glacial Maximum
	Shen, Jiaojiao 1,2,3; Xie, Xiaoning 1,4; Cheng, Xugeng 5; Liu, Xiaodong 1,2
通讯作者	Xie, Xiaoning(xnxie@ieecas.cn)
	2020-03-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	542 页码:13
摘要	The improved Community Atmosphere Model version 4 with a Bulk Aerosol Model parameterizations of the dust size distribution (CAM4-BAM) was used to investigate the dust-in-snow radiative forcing (SRF) over the Tibetan Plateau (TP) and its feedbacks on the regional climate and the dust cycle in spring, the season with the strongest dust activity, over East Asia during the Last Glacial Maximum (LGM). Simulated results show that the dust in snow can cause a large positive SRF and significant warming at the TP surface, reaching more than 45 W m(-2) and 3-5 degrees C warming in western TP during the LGM. The SRF increases the East Asian dust emissions, dry deposition and wet deposition by 71.6 Tg (8.1%), 34.5 Tg (7.0%) and 7.9 Tg (16.0%), respectively, in spring during LGM. Further analysis reveals that, the SRF warms the TP surface and enhances the thermal effect of the TP in spring by increasing the surface shortwave radiative forcing, sensible and latent heat fluxes. A mid-upper level anticyclonic circulation anomaly is generated, thus increases the regional westerly wind over the East Asian dust source region, and in turn enhances the dust emission and dust transport over East Asia. In general, SRF over the TP creates a positive feedback loop of enhancing the East Asian dust cycle during LGM.
关键词	Dust flux Sensible heat Anticyclone Positive feedback Westerlies Climatic warming
DOI	10.1016/j.palaeo.2019.109442
关键词[WOS]	TRANS-PACIFIC TRANSPORT ; MINERAL DUST ; RADIATIVE FEEDBACKS ; CLIMATE ; AEROSOLS ; SIMULATION ; COVER ; SIZE ; AGE
收录类别	SCI ; SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Key Research and Development Program of China[2016YFA0601904] ; National Natural Science Foundation of China[41991254] ; National Natural Science Foundation of China[41690115] ; CAS Light of West China Program
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; CAS Light of West China Program
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000517852600011
出版者	ELSEVIER
引用统计	被引频次：4[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/361006/12765
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Xie, Xiaoning
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shaanxi Prov Meteorol Bur, Xian 710014, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Nanjing Univ Sci Informat & Technol, China Meteorol Adm, Key Lab Aerosol Cloud Precipitat, Nanjing 210044, Peoples R China
推荐引用方式 GB/T 7714	Shen, Jiaojiao,Xie, Xiaoning,Cheng, Xugeng,et al. Effects of dust-in-snow forcing over the Tibetan Plateau on the East Asian dust cycle during the Last Glacial Maximum[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,542:13.
APA	Shen, Jiaojiao,Xie, Xiaoning,Cheng, Xugeng,&Liu, Xiaodong.(2020).Effects of dust-in-snow forcing over the Tibetan Plateau on the East Asian dust cycle during the Last Glacial Maximum.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,542,13.
MLA	Shen, Jiaojiao,et al."Effects of dust-in-snow forcing over the Tibetan Plateau on the East Asian dust cycle during the Last Glacial Maximum".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 542(2020):13.