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DOI | 10.1038/s41561-020-0587-0 |
Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal | |
Fogwill, C. J.1,2; Turney, C. S. M.2,3,4; Menviel, L.2,5; Baker, A.2,3; Weber, M. E.6; Ellis, B.7; Thomas, Z. A.2,3,4; Golledge, N. R.8,9; Etheridge, D.10; Rubino, M.1,10,11; Thornton, D. P.10; van Ommen, T. D.12,13; Moy, A. D.12,13; Curran, M. A. J.12,13; Davies, S.14; Bird, M., I15,16; Munksgaard, N. C.15,17; Rootes, C. M.18; Millman, H.1,5; Vohra, J.2; Rivera, A.19,20; Mackintosh, A.21; Pike, J.22; Hall, I. R.22; Bagshaw, E. A.22; Rainsley, E.1; Bronk-Ramsey, C.23; Montenari, M.1; Cage, A. G.1; Harris, M. R. P.1; Jones, R.24; Power, A.25; Love, J.25; Young, J.26; Weyrich, L. S.3,26; Cooper, A.27 | |
2020-06-22 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2020 |
卷号 | 13期号:7页码:489-+ |
文章类型 | Article |
语种 | 英语 |
国家 | England; Australia; Germany; New Zealand; Italy; Wales; Chile |
英文摘要 | Increased Southern Ocean productivity driven by sea-ice feedbacks contributed to a slowdown in rising CO(2)levels during the last deglaciation, according to analyses of marine-derived aerosols from an Antarctic ice core. The Southern Ocean occupies 14% of the Earth's surface and plays a fundamental role in the global carbon cycle and climate. It provides a direct connection to the deep ocean carbon reservoir through biogeochemical processes that include surface primary productivity, remineralization at depth and the upwelling of carbon-rich water masses. However, the role of these different processes in modulating past and future air-sea carbon flux remains poorly understood. A key period in this regard is the Antarctic Cold Reversal (ACR, 14.6-12.7 kyrbp), when mid- to high-latitude Southern Hemisphere cooling coincided with a sustained plateau in the global deglacial increase in atmospheric CO2. Here we reconstruct high-latitude Southern Ocean surface productivity from marine-derived aerosols captured in a highly resolved horizontal ice core. Our multiproxy reconstruction reveals a sustained signal of enhanced marine productivity across the ACR. Transient climate modelling indicates this period coincided with maximum seasonal variability in sea-ice extent, implying that sea-ice biological feedbacks enhanced CO(2)sequestration and created a substantial regional marine carbon sink, which contributed to the plateau in CO(2)during the ACR. Our results highlight the role Antarctic sea ice plays in controlling global CO2, and demonstrate the need to incorporate such feedbacks into climate-carbon models. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000542120500003 |
WOS关键词 | ATMOSPHERIC CO2 ; ORGANIC-CARBON ; CLIMATE RECORD ; PATRIOT HILLS ; PRODUCTIVITY ; CYCLE ; FERTILIZATION ; VARIABILITY ; PLEISTOCENE ; TRENDS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/278162 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Keele Univ, Sch Geog Geol & Environm, Keele, Staffs, England; 2.UNSW Sydney, Palaeontol Geobiol & Earth Archives Res Ctr, Sch Biol Earth & Environm Sci, Sydney, NSW, Australia; 3.UNSW Sydney, Sch Biol Earth & Environm Sci, ARC Ctr Excellence Australian Biodivers & Heritag, Sydney, NSW, Australia; 4.UNSW Sydney, Chronos 14Carbon Cycle Facil, Sydney, NSW, Australia; 5.UNSW Sydney, Sch Biol Earth & Environm Sci, Climate Change Res Ctr, Sydney, NSW, Australia; 6.Univ Bonn, Inst Geoscinces, Dept Geochem & Petrol, Bonn, Germany; 7.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT, Australia; 8.Victoria Univ Wellington, Antarctic Res Ctr, Wellington, New Zealand; 9.GNS Sci, Lower Hutt, New Zealand; 10.CSIRO Oceans & Atmosphere, Aspendale, Vic, Australia; 11.Univ Campania Luigi Vanvitelli, Dipartimento Matemat & Fis, Caserta, Italy; 12.Dept Agr Water & Environm, Australian Antarctic Div, Kingston, Tas, Australia; 13.Univ Tasmania, Antarctic Climate & Ecosyst Cooperat Res Ctr, Hobart, Tas, Australia; 14.Swansea Univ, Dept Geog, Swansea, W Glam, Wales; 15.James Cook Univ, Coll Sci Technol & Engn, Ctr Trop Environm & Sustainabil Sci, Cairns, Qld, Australia; 16.James Cook Univ, ARC Ctr Excellence Australian Biodivers & Heritag, Cairns, Qld, Australia; 17.Charles Darwin Univ, Res Inst Environm & Livelihoods, Darwin, NT, Australia; 18.Univ Sheffield, Dept Geog, Sheffield, S Yorkshire, England; 19.Univ Austral Chile, Inst Conservac Biodiversidad & Terr, Valdivia, Chile; 20.Univ Chile, Dept Geog, Santiago, Chile; 21.Monash Univ, Sch Earth Atmosphere & Environm, Melbourne, Vic, Australia; 22.Cardiff Univ, Sch Earth & Ocean Sci, Cardiff, Wales; 23.Univ Oxford, Res Lab Archaeol & Hist Art, Oxford, England; 24.Exeter Univ, Sch Geog, Exeter, Devon, England; 25.Exeter Univ, Bioecon Ctr, Exeter, Devon, England; 26.Univ Adelaide, Australian Ctr Ancient DNA, Adelaide, SA, Australia; 27.South Australian Museum, Adelaide, SA, Australia |
推荐引用方式 GB/T 7714 | Fogwill, C. J.,Turney, C. S. M.,Menviel, L.,et al. Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal[J]. NATURE GEOSCIENCE,2020,13(7):489-+. |
APA | Fogwill, C. J..,Turney, C. S. M..,Menviel, L..,Baker, A..,Weber, M. E..,...&Cooper, A..(2020).Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal.NATURE GEOSCIENCE,13(7),489-+. |
MLA | Fogwill, C. J.,et al."Southern Ocean carbon sink enhanced by sea-ice feedbacks at the Antarctic Cold Reversal".NATURE GEOSCIENCE 13.7(2020):489-+. |
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