globalchange  > 气候变化与战略
DOI: 10.1073/pnas.1903139116
论文题名:
Resolving seasonal rainfall changes in the Middle East during the last interglacial period
作者: Orland I.J.; He F.; Bar-Matthews M.; Chen G.; Ayalon A.; Kutzbach J.E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2019
卷: 116, 期:50
起始页码: 24985
结束页码: 24990
语种: 英语
英文关键词: Data-model comparison ; Oxygen isotopes ; Paleoclimate ; Seasonal-resolution
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
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163608
Appears in Collections:气候变化与战略

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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

Recommended Citation:
Orland I.J.,He F.,Bar-Matthews M.,et al. Resolving seasonal rainfall changes in the Middle East during the last interglacial period[J]. Proceedings of the National Academy of Sciences of the United States of America,2019-01-01,116(50)
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