globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2004071117
论文题名:
Elevated dust depositions in West Asia linked to ocean-atmosphere shifts during North Atlantic cold events
作者: Safaierad R.; Mohtadi M.; Zolitschka B.; Yokoyama Y.; Vogt C.; Schefuà E.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:31
起始页码: 18272
结束页码: 18277
语种: 英语
英文关键词: Atmospheric dust ; North atlantic cooling ; Northern hemisphere westerlies ; Sea ice ; West Asia
Scopus关键词: article ; climate ; cold stress ; cooling ; ice sheet ; Iran ; North Africa ; Northern Hemisphere ; oscillation ; plume ; sea ice ; winter ; Younger Dryas
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.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164093
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(31)
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