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DOI | 10.1073/pnas.2004071117 |
Elevated dust depositions in West Asia linked to ocean–atmosphere shifts during North Atlantic cold events | |
Reza Safaierad; Mahyar Mohtadi; Bernd Zolitschka; Yusuke Yokoyama; Christoph Vogt; Enno Schefuß | |
2020-07-20 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2020 |
英文摘要 | Rapid North Atlantic cooling events during the last deglaciation caused atmospheric reorganizations on global and regional scales. Their impact on Asian climate has been investigated for monsoonal domains, but remains largely unknown in westerly wind-dominated semiarid regions. Here we generate a dust record from southeastern Iran spanning the period 19 to 7 cal. ka B.P. We find a direct link between frequent occurrences of dust plumes originating from the Arabian Peninsula and North Africa and rapid southward shifts of the westerlies associated with changes of the winter stationary waves during Heinrich Stadial 1, the Younger Dryas, the Preboreal Oscillation, and the 8.2-ka event. Dust input rises and falls abruptly at the transitions into and out of these cooling events, which we attribute to changes in the ocean circulation strength that are modulated by the North Atlantic winter sea-ice cover. Our findings reveal that waxing and waning of North American ice sheets have a stronger influence than those of European ice sheets on the winter climate over West Asia. |
领域 | 地球科学 |
URL | 查看原文 |
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/286828 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Reza Safaierad,Mahyar Mohtadi,Bernd Zolitschka,等. Elevated dust depositions in West Asia linked to ocean–atmosphere shifts during North Atlantic cold events[J]. Proceedings of the National Academy of Science,2020. |
APA | Reza Safaierad,Mahyar Mohtadi,Bernd Zolitschka,Yusuke Yokoyama,Christoph Vogt,&Enno Schefuß.(2020).Elevated dust depositions in West Asia linked to ocean–atmosphere shifts during North Atlantic cold events.Proceedings of the National Academy of Science. |
MLA | Reza Safaierad,et al."Elevated dust depositions in West Asia linked to ocean–atmosphere shifts during North Atlantic cold events".Proceedings of the National Academy of Science (2020). |
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