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DOI | 10.1038/NGEO2848 |
Global atmospheric teleconnections during Dansgaard-Oeschger events | |
Markle, Bradley R.1; Steig, Eric J.1,2; Buizert, Christo3; Schoenemann, Spruce W.1; Bitz, Cecilia M.2; Fudge, T. J.1; Pedro, Joel B.4; Ding, Qinghua5; Jones, Tyler R.6; White, JamesW. C.6; Sowers, Todd7 | |
2017 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Denmark |
英文摘要 | During the last glacial period, the North Atlantic region experienced a series of Dansgaard-Oeschger cycles in which climate abruptly alternated between warm and cold periods. Corresponding variations in Antarctic surface temperature were out of phase with their Northern Hemisphere counterparts. The temperature relationship between the hemispheres is commonly attributed to an interhemispheric redistribution of heat by the ocean overturning circulation. Changes in ocean heat transport should be accompanied by changes in atmospheric circulation to satisfy global energy budget constraints. Although changes in tropical atmospheric circulation linked to abrupt events in the Northern Hemisphere are well documented, evidence for predicted changes in the Southern Hemisphere's atmospheric circulation during Dansgaard-Oeschger cycles is lacking. Here we use a high-resolution deuterium-excess record from West Antarctica to show that the latitude of the mean moisture source for Antarctic precipitation changed in phase with abrupt shifts in Northern Hemisphere climate, and significantly before Antarctic temperature change. This provides direct evidence that Southern Hemisphere mid-latitude storm tracks shifted within decades of abrupt changes in the North Atlantic, in parallel with meridional migrations of the intertropical convergence zone. We conclude that both oceanic and atmospheric processes, operating on different timescales, link the hemispheres during abrupt climate change. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394117300011 |
WOS关键词 | LAST GLACIAL PERIOD ; DEEP ICE CORE ; SOUTHERN-OCEAN ; ANTARCTIC ICE ; CLIMATE ; ATLANTIC ; CHRONOLOGY ; RAINFALL ; RECORDS ; ITCZ |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/34696 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Washington, Dept Earth & Space Sci, Seattle, WA 98195 USA; 2.Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA; 3.Oregon State Univ, Coll Earth Ocean & Atmospher Sci, Corvallis, OR 97331 USA; 4.Univ Copenhagen, Ctr Ice & Climate, DKK-2100 Copenhagen, Denmark; 5.Univ Calif Santa Barbara, Dept Geog, Santa Barbara, CA 93016 USA; 6.Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA; 7.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Markle, Bradley R.,Steig, Eric J.,Buizert, Christo,et al. Global atmospheric teleconnections during Dansgaard-Oeschger events[J]. NATURE GEOSCIENCE,2017,10(1). |
APA | Markle, Bradley R..,Steig, Eric J..,Buizert, Christo.,Schoenemann, Spruce W..,Bitz, Cecilia M..,...&Sowers, Todd.(2017).Global atmospheric teleconnections during Dansgaard-Oeschger events.NATURE GEOSCIENCE,10(1). |
MLA | Markle, Bradley R.,et al."Global atmospheric teleconnections during Dansgaard-Oeschger events".NATURE GEOSCIENCE 10.1(2017). |
条目包含的文件 | 条目无相关文件。 |
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