气候变化领域集成服务门户(CCPortal): Elevated dust depositions in West Asia linked to ocean-atmosphere shifts during North Atlantic cold events

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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
	Safaierad R.; Mohtadi M.; Zolitschka B.; Yokoyama Y.; Vogt C.; SchefuÃ E.
发表日期	2020
ISSN	0027-8424
起始页码	18272
结束页码	18277
卷号	117 期号:31
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 winddominated 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. © 2020 National Academy of Sciences. All rights reserved.
英文关键词	Atmospheric dust; North atlantic cooling; Northern hemisphere westerlies; Sea ice; West Asia
语种	英语
scopus关键词	article; climate; cold stress; cooling; ice sheet; Iran; North Africa; Northern Hemisphere; oscillation; plume; sea ice; winter; Younger Dryas
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/160851
作者单位	Safaierad, R., Department of Physical Geography, University of Tehran, Tehran, 14155-6465, Iran; Mohtadi, M., MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, 28359, Germany; Zolitschka, B., Institute of Geography (GEOPOLAR), University of Bremen, Bremen, 28359, Germany; Yokoyama, Y., Atmosphere and Ocean Research Institute, University of Tokyo, Tokyo, 113-0033, Japan, Department of Earth and Planetary Sciences, University of Tokyo, Tokyo, 113-0033, Japan; Vogt, C., Faculty of Geosciences, University of Bremen, Bremen, 28359, Germany; SchefuÃ, E., MARUM-Center for Marine Environmental Sciences, University of Bremen, Bremen, 28359, Germany
推荐引用方式 GB/T 7714	Safaierad R.,Mohtadi M.,Zolitschka B.,et al. Elevated dust depositions in West Asia linked to ocean-atmosphere shifts during North Atlantic cold events[J],2020,117(31).
APA	Safaierad R.,Mohtadi M.,Zolitschka B.,Yokoyama Y.,Vogt C.,&SchefuÃ E..(2020).Elevated dust depositions in West Asia linked to ocean-atmosphere shifts during North Atlantic cold events.Proceedings of the National Academy of Sciences of the United States of America,117(31).
MLA	Safaierad R.,et al."Elevated dust depositions in West Asia linked to ocean-atmosphere shifts during North Atlantic cold events".Proceedings of the National Academy of Sciences of the United States of America 117.31(2020).