干旱区生态环境知识资源中心(Arid): Linear Relation Between Shifting ITCZ and Dust Hemispheric Asymmetry

Arid

DOI	10.1029/2020GL090499
	Linear Relation Between Shifting ITCZ and Dust Hemispheric Asymmetry
	Evans, Stuart; Dawson, Eliza; Ginoux, Paul
通讯作者	Evans, S
来源期刊	GEOPHYSICAL RESEARCH LETTERS
ISSN	0094-8276
EISSN	1944-8007
出版年	2020
卷号	47 期号:22
英文摘要	Mineral dust is emitted primarily from arid regions, which may shrink or expand in one or both hemispheres, producing a complex and asymmetric pattern of radiative forcing that varies on interannual to millennial timescales. We assess the impact of hemispheric dust asymmetry on tropical precipitation. Using the Geophysical Fluid Dynamics Laboratory (GFDL) coupled climate model CM3 to simulate dust emission, we vary source strength in each hemisphere individually. Hemispherically asymmetric dust emission produces asymmetric dust load and radiative forcing. We find that the Intertropical Convergence Zone (ITCZ) shifts away from the hemisphere with enhanced dust load in response to the forcing asymmetry. We find significant linear relationships between the hemispheric imbalance and the latitude of tropical precipitation globally, in the Pacific, and especially in the Atlantic basin. This relationship offers a first-order estimation of dust effects on the hydrological cycle when investigating records of paleodust and for accurately predicting dust effects and feedbacks on future climate.
英文关键词	dust ITCZ tropical precipitation direct effect land atmosphere paleoclimate
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000595819700047
WOS关键词	INTERTROPICAL CONVERGENCE ZONE ; LAST GLACIAL MAXIMUM ; GRIP ICE CORE ; DESERT DUST ; REFRACTIVE-INDEX ; HEAT-TRANSPORT ; CLIMATE ; VARIABILITY ; ATLANTIC ; SENSITIVITY
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327851
作者单位	[Evans, Stuart] Univ Buffalo, Dept Geog, Buffalo, NY 14214 USA; [Evans, Stuart] Univ Buffalo, RENEW Inst, Buffalo, NY 14214 USA; [Dawson, Eliza] Stanford Univ, Dept Geophys, Stanford, CA 94305 USA; [Ginoux, Paul] Geophys Fluid Dynam Lab, Princeton, NJ USA
推荐引用方式 GB/T 7714	Evans, Stuart,Dawson, Eliza,Ginoux, Paul. Linear Relation Between Shifting ITCZ and Dust Hemispheric Asymmetry[J],2020,47(22).
APA	Evans, Stuart,Dawson, Eliza,&Ginoux, Paul.(2020).Linear Relation Between Shifting ITCZ and Dust Hemispheric Asymmetry.GEOPHYSICAL RESEARCH LETTERS,47(22).
MLA	Evans, Stuart,et al."Linear Relation Between Shifting ITCZ and Dust Hemispheric Asymmetry".GEOPHYSICAL RESEARCH LETTERS 47.22(2020).