干旱区生态环境知识资源中心(Arid): Orbital controls on Namib Desert hydroclimate over the past 50,000 years

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DOI	10.1130/G46334.1
	Orbital controls on Namib Desert hydroclimate over the past 50,000 years
	Chase, Brian M.1; Niedermeyer, Eva M.2; Boom, Arnoud 3; Carr, Andrew S.3; Chevalier, Manuel 4; He, Feng 5,6; Meadows, Michael E.7,8; Ogle, Neil 9; Reimer, Paula J.9
通讯作者	Chase, Brian M.
来源期刊	GEOLOGY
ISSN	0091-7613
EISSN	1943-2682
出版年	2019
卷号	47 期号:9 页码:867-871
英文摘要	Despite being one of the world's oldest deserts, and the subject of decades of research, evidence of past climate change in the Namib Desert is extremely limited. As such, there is significant debate regarding the nature and drivers of climate change in the low-latitude drylands of southwestern Africa. Here we present data from stratified accumulations of rock hyrax urine that provide the first continuous high-resolution terrestrial climate record for the Namib Desert spanning the past 50,000 yr. These data, spanning multiple sites, show remarkably coherent variability that is clearly linked to orbital cycles and the evolution and perturbation of global boundary conditions. Contrary to some previous predictions of southwestern African climate change, we show that orbital-scale cycles of hydroclimatic variability in the Namib Desert region are in phase with those of the northern tropics, with increased local summer insolation coinciding with periods of increased aridity. Supported by climate model simulations, our analyses link this to variations in position and intensity of atmospheric pressure cells modulated by hemispheric and land-sea temperature gradients. We conclude that hydroclimatic variability at orbital time scales is driven by the combined influence of direct low-latitude insolation forcing and the influence of remote controls on the South Atlantic anticyclone, with attendant impacts on upwelling and sea-surface temperature variations.
类型	Article
语种	英语
国家	France ; Germany ; England ; Switzerland ; USA ; South Africa ; Peoples R China ; North Ireland
开放获取类型	Green Submitted, Green Published
收录类别	SCI-E
WOS记录号	WOS:000483606500018
WOS关键词	CLIMATE-CHANGE ; AFRICAN HYDROLOGY ; HYRAX MIDDENS ; WIND-STRENGTH ; SOUTH-AFRICA ; GRAIN-SIZE ; RECORD ; VEGETATION ; HOLOCENE ; RAINFALL
WOS类目	Geology
WOS研究方向	Geology
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215985
作者单位	1.Univ Montpellier, ISEM, CNRS, EPHE,IRD, Batiment 22,CC061,Pl Eugene Bataillon, F-34095 Montpellier, France; 2.Senckenberg Gesell Nat Forsch, Senckenberg Biodivers & Climate Res Ctr BiK F, Senckenberganlage 25, D-60325 Frankfurt, Germany; 3.Univ Leicester, Sch Geog Geol & Environm, Leicester LE1 7RH, Leics, England; 4.Univ Lausanne, Inst Earth Surface Dynam, Batiment Geopolis, CH-1015 Lausanne, Switzerland; 5.Univ Wisconsin, Ctr Climat Res, Nelson Inst Environm Studies, Madison, WI 53706 USA; 6.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 7.Univ Cape Town, Dept Environm & Geog Sci, Private Bag X3, ZA-7701 Rondebosch, South Africa; 8.East China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China; 9.Queens Univ Belfast, Sch Nat & Built Environm, Belfast BT7 1NN, Antrim, North Ireland
推荐引用方式 GB/T 7714	Chase, Brian M.,Niedermeyer, Eva M.,Boom, Arnoud,et al. Orbital controls on Namib Desert hydroclimate over the past 50,000 years[J]. French National Research Institute for Sustainable Development,2019,47(9):867-871.
APA	Chase, Brian M..,Niedermeyer, Eva M..,Boom, Arnoud.,Carr, Andrew S..,Chevalier, Manuel.,...&Reimer, Paula J..(2019).Orbital controls on Namib Desert hydroclimate over the past 50,000 years.GEOLOGY,47(9),867-871.
MLA	Chase, Brian M.,et al."Orbital controls on Namib Desert hydroclimate over the past 50,000 years".GEOLOGY 47.9(2019):867-871.