Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076437 |
Does Southern Ocean Surface Forcing Shape the Global Ocean Overturning Circulation? | |
Sun, Shantong1; Eisenman, Ian1; Stewart, Andrew L.2 | |
2018-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:5页码:2413-2423 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Paleoclimate proxy data suggest that the Atlantic Meridional Overturning Circulation (AMOC) was shallower at the Last Glacial Maximum (LGM) than its preindustrial (PI) depth. Previous studies have suggested that this shoaling necessarily accompanies Antarctic sea ice expansion at the LGM. Here the influence of Southern Ocean surface forcing on the AMOC depth is investigated using ocean-only simulations from a state-of-the-art climate model with surface forcing specified from the output of previous coupled PI and LGM simulations. In contrast to previous expectations, we find that applying LGM surface forcing in the Southern Ocean and PI surface forcing elsewhere causes the AMOC to shoal only about half as much as when LGM surface forcing is applied globally. We show that this occurs because diapycnal mixing renders the Southern Ocean overturning circulation more diabatic than previously assumed, which diminishes the influence of Southern Ocean surface buoyancy forcing on the depth of the AMOC. |
英文关键词 | Southern Ocean global ocean overturning circulation climate model Last Glacial Maximum |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428402400034 |
WOS关键词 | LAST GLACIAL MAXIMUM ; ANTARCTIC CIRCUMPOLAR CURRENT ; ATMOSPHERIC CO2 ; DEEP-OCEAN ; SEA-ICE ; TRACER RELEASE ; NORTH-ATLANTIC ; CLIMATE-CHANGE ; STRATIFICATION ; MODEL |
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/27955 |
专题 | 气候变化 |
作者单位 | 1.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 2.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Sun, Shantong,Eisenman, Ian,Stewart, Andrew L.. Does Southern Ocean Surface Forcing Shape the Global Ocean Overturning Circulation?[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(5):2413-2423. |
APA | Sun, Shantong,Eisenman, Ian,&Stewart, Andrew L..(2018).Does Southern Ocean Surface Forcing Shape the Global Ocean Overturning Circulation?.GEOPHYSICAL RESEARCH LETTERS,45(5),2413-2423. |
MLA | Sun, Shantong,et al."Does Southern Ocean Surface Forcing Shape the Global Ocean Overturning Circulation?".GEOPHYSICAL RESEARCH LETTERS 45.5(2018):2413-2423. |
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