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DOI | 10.1038/s41561-018-0186-5 |
Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing | |
Saunders, Krystyna M.1,2; Roberts, Stephen J.3; Perren, Bianca3; Butz, Christoph1; Sime, Louise3; Davies, Sarah4; Van Nieuwenhuyze, Wim5; Grosjean, Martin1; Hodgson, Dominic A.3,6 | |
2018-09-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2018 |
卷号 | 11期号:9页码:650-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Australia; England; Wales; Belgium |
英文摘要 | The Southern Hemisphere westerly winds (SHW) play an important role in regulating the capacity of the Southern Ocean carbon sink. They modulate upwelling of carbon-rich deep water and, with sea ice, determine the ocean surface area available for air-sea gas exchange. Some models indicate that the current strengthening and poleward shift of these winds will weaken the carbon sink. If correct, centennial-to millennial-scale reconstructions of the SHW intensity should be linked with past changes in atmospheric CO2, temperature and sea ice. Here we present a 12,300-year reconstruction of wind strength based on three independent proxies that track inputs of sea-salt aerosols and minerogenic particles accumulating in lake sediments on sub-Antarctic Macquarie Island. Between about 12.1 thousand years ago (ka) and 11.2 ka, and since about 7 ka, the wind intensities were above their long-term mean and corresponded with increasing atmospheric CO2. Conversely, from about 11.2 to 7.2 ka, the wind intensities were below their long-term mean and corresponded with decreasing atmospheric CO2. These observations are consistent with model inferences of enhanced SHW contributing to the long-term outgassing of CO2 from the Southern Ocean. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443302900011 |
WOS关键词 | LAST GLACIAL TERMINATION ; TIERRA-DEL-FUEGO ; SEA-ICE ; ATMOSPHERIC CO2 ; CLIMATE VARIABILITY ; ENVIRONMENTAL-CHANGES ; SOUTHWEST PACIFIC ; CARBON SINK ; OCEAN ; RECORDS |
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/34983 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Univ Bern, Inst Geog, Bern, Switzerland; 2.Univ Bern, Oeschger Ctr Climate Change Res, Bern, Switzerland; 3.Australian Nucl Sci & Technol Org, Sydney, NSW, Australia; 4.British Antarctic Survey, Cambridge, England; 5.Aberystwyth Univ, Dept Geog & Earth Sci, Aberystwyth, Dyfed, Wales; 6.Univ Ghent, Dept Biol, Ghent, Belgium; 7.Univ Durham, Dept Geog, Durham, England |
推荐引用方式 GB/T 7714 | Saunders, Krystyna M.,Roberts, Stephen J.,Perren, Bianca,et al. Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing[J]. NATURE GEOSCIENCE,2018,11(9):650-+. |
APA | Saunders, Krystyna M..,Roberts, Stephen J..,Perren, Bianca.,Butz, Christoph.,Sime, Louise.,...&Hodgson, Dominic A..(2018).Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing.NATURE GEOSCIENCE,11(9),650-+. |
MLA | Saunders, Krystyna M.,et al."Holocene dynamics of the Southern Hemisphere westerly winds and possible links to CO2 outgassing".NATURE GEOSCIENCE 11.9(2018):650-+. |
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