气候变化领域集成服务门户(CCPortal): Resolving seasonal rainfall changes in the Middle East during the last interglacial period

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DOI	10.1073/pnas.1903139116
	Resolving seasonal rainfall changes in the Middle East during the last interglacial period
	Orland I.J.; He F.; Bar-Matthews M.; Chen G.; Ayalon A.; Kutzbach J.E.
发表日期	2019
ISSN	0027-8424
起始页码	24985
结束页码	24990
卷号	116 期号:50
英文摘要	Paleorainfall proxy records from the Middle East have revealed remarkable patterns of variability since the penultimate glacial period (140 ka), but the seasonality of this signal has been unresolvable. Here, seasonal-resolution oxygen isotope data from Soreq Cave speleothems suggest that summer monsoon rainfall periodically reaches as far north as Israel—well removed from the modern monsoon—at times (∼125, 105 ka) that overlap with evidence for some of the earliest modern human migrations out of Africa. These seasonal proxy data are corroborated by seasonal-resolution model output of the amount and oxygen-isotope ratio of rainfall from an isotope-enabled climate model. In contrast to the modern regional climate where rainfall is delivered predominantly in winter months along westerly storm tracks, the model suggests that during extreme peaks of summer insolation—as occurs during the last interglacial (e.g., 125, 105 ka)—regional rainfall increases due to both wetter winters and the incursion of summer monsoons. This interpretation brings clarity to regional paleoproxy records and provides important environmental context along one potential pathway of early modern human migration. © 2019 National Academy of Sciences. All rights reserved.
英文关键词	Data-model comparison; Oxygen isotopes; Paleoclimate; Seasonal-resolution
语种	英语
scopus关键词	oxygen; oxygen 18; rain; Africa; Article; geochemistry; geography; human; hydrology; interglacial; Israel; Middle East; migration; monsoon climate; paleoclimate; priority journal; seasonal variation; summer; sunlight; winter
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160415
作者单位	Orland, I.J., Department of Geoscience, University of Wisconsin–Madison, Madison, WI 53706, United States, Wisconsin Geological and Natural History Survey, University of Wisconsin–Madison, Madison, WI 53705, United States; He, F., Center for Climatic Research, Nelson Institute for Environmental Studies, University of Wisconsin–Madison, Madison, WI 53706, United States; Bar-Matthews, M., Department of Geochemistry, Geological Survey of Israel, Jerusalem, 9692100, Israel; Chen, G., Department of Geoscience, University of Wisconsin–Madison, Madison, WI 53706, United States; Ayalon, A., Department of Geochemistry, Geological Survey of Israel, Jerusalem, 9692100, Israel; Kutzbach, J.E., Center for Climatic Research, Nelson Institute for Environmental Studies, University of Wisconsin–Madison, Madison, WI 53706, United States
推荐引用方式 GB/T 7714	Orland I.J.,He F.,Bar-Matthews M.,et al. Resolving seasonal rainfall changes in the Middle East during the last interglacial period[J],2019,116(50).
APA	Orland I.J.,He F.,Bar-Matthews M.,Chen G.,Ayalon A.,&Kutzbach J.E..(2019).Resolving seasonal rainfall changes in the Middle East during the last interglacial period.Proceedings of the National Academy of Sciences of the United States of America,116(50).
MLA	Orland I.J.,et al."Resolving seasonal rainfall changes in the Middle East during the last interglacial period".Proceedings of the National Academy of Sciences of the United States of America 116.50(2019).