Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1903139116 |
Resolving seasonal rainfall changes in the Middle East during the last interglacial period | |
Ian J. Orland; Feng He; Miryam Bar-Matthews; Guangshan Chen; Avner Ayalon; and John E. Kutzbach | |
2019 | |
发表期刊 | Proceedings of the National Academy of Sciences of the United States of America |
ISSN | 0027-8446 |
出版年 | 2019 |
卷号 | 116期号:50页码:24985-24990 |
语种 | 英语 |
英文摘要 | AbstractPaleorainfall 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. |
英文关键词 | paleoclimate seasonal-resolution oxygen isotopes data-model comparison |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/232540 |
专题 | 地球科学 资源环境科学 气候变化 |
推荐引用方式 GB/T 7714 | Ian J. Orland,Feng He,Miryam Bar-Matthews,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,2019,116(50):24985-24990. |
APA | Ian J. Orland,Feng He,Miryam Bar-Matthews,Guangshan Chen,Avner Ayalon,&and John E. Kutzbach.(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),24985-24990. |
MLA | Ian J. Orland,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):24985-24990. |
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