Arid
DOI10.1016/j.quascirev.2017.03.019
Timing of the southward retreat of the ITCZ at the end of the Holocene Humid Period in Southern Arabia: Data-model comparison
Lezine, Anne-Marie1; Ivory, Sarah J.2; Braconnot, Pascale3; Marti, Olivier3
通讯作者Lezine, Anne-Marie
来源期刊QUATERNARY SCIENCE REVIEWS
ISSN0277-3791
出版年2017
卷号164页码:68-76
英文摘要

New pollen data from Omani mangroves (Kwar-al-Jaramah [22.49 degrees N - 59.76 degrees E] and Filim [20.61 degrees N - 58.17 degrees E], in addition to previously published paleohydrological records from Southern Arabia improve our understanding of the timing and amplitude of the southward retreat of the Indian monsoon influence in Southern Arabia along a north-south transect. Comparison with simulations performed with the IPSL climate model, considering both snapshot experiments and transient simulations from 6000 cal yr BP to the present, confirm the latitudinally time-transgresSive nature of the humid-arid transition at the end of the Holocene Humid Period. This occurred in two steps, respectively dated at around 5000 and 2700 cal yr BP. At around 5000 cal yr BP, the southward ITCZ shift was orbitally-driven and led to the abrupt aridification at Kwar-al-Jaramah and the progressive increase of dryness at Filim as the mean position of the ITCZ was centered ca 22.30 degrees N. At 2700 cal yr BP, aridity was fully in place over all of southern Arabia due to increased climate variability. More intense rainy events during the last millennium, however, may have contributed to the discrete hydrological improvement without any impact on the regional vegetation which has remained desert to the present day. (C) 2017 Elsevier Ltd. All rights reserved.


英文关键词Pollen Climate simulations IPSL model Oman ITCZ End of the Holocene Humid Period
类型Article
语种英语
国家France ; USA
收录类别SCI-E
WOS记录号WOS:000401679500005
WOS关键词LAST GLACIAL MAXIMUM ; INDIAN MONSOON ; CLIMATE-CHANGE ; NORTHERN AFRICA ; CIRCULATION MODEL ; OMAN ; VEGETATION ; EVOLUTION ; DYNAMICS ; SAHARA
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; 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/2XILL650/201854
作者单位1.Univ Paris 06, Sorbonne Univ, CNRS IRD MNHN, LOCEAN IPSL Lab, 4 Pl Jussieu, F-75005 Paris, France;
2.Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA;
3.CEA CNRS UVSQ UMR8212, Lab Sci Climat & Environm IPSL, CE Saclay, F-91191 Gif Sur Yvette, France
推荐引用方式
GB/T 7714
Lezine, Anne-Marie,Ivory, Sarah J.,Braconnot, Pascale,et al. Timing of the southward retreat of the ITCZ at the end of the Holocene Humid Period in Southern Arabia: Data-model comparison[J]. French National Research Institute for Sustainable Development,2017,164:68-76.
APA Lezine, Anne-Marie,Ivory, Sarah J.,Braconnot, Pascale,&Marti, Olivier.(2017).Timing of the southward retreat of the ITCZ at the end of the Holocene Humid Period in Southern Arabia: Data-model comparison.QUATERNARY SCIENCE REVIEWS,164,68-76.
MLA Lezine, Anne-Marie,et al."Timing of the southward retreat of the ITCZ at the end of the Holocene Humid Period in Southern Arabia: Data-model comparison".QUATERNARY SCIENCE REVIEWS 164(2017):68-76.
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