Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1610438113 |
Glacial ocean circulation and stratification explained by reduced atmospheric temperature | |
Jansen, Malte F. | |
2017-01-03 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
![]() |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:1页码:45-50 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Earth's climate has undergone dramatic shifts between glacial and interglacial time periods, with high-latitude temperature changes on the order of 5-10 degrees C. These climatic shifts have been associated with major rearrangements in the deep ocean circulation and stratification, which have likely played an important role in the observed atmospheric carbon dioxide swings by affecting the partitioning of carbon between the atmosphere and the ocean. The mechanisms by which the deep ocean circulation changed, however, are still unclear and represent a major challenge to our understanding of glacial climates. This study shows that various inferred changes in the deep ocean circulation and stratification between glacial and interglacial climates can be interpreted as a direct consequence of atmospheric temperature differences. Colder atmospheric temperatures lead to increased sea ice cover and formation rate around Antarctica. The associated enhanced brine rejection leads to a strongly increased deep ocean stratification, consistent with high abyssal salinities inferred for the last glacial maximum. The increased stratification goes together with a weakening and shoaling of the interhemispheric overturning circulation, again consistent with proxy evidence for the last glacial. The shallower interhemispheric overturning circulation makes room for slowly moving water of Antarctic origin, which explains the observed middepth radiocarbon age maximum and may play an important role in ocean carbon storage. |
英文关键词 | LGM AMOC stratification cooling sea-ice |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000391093700024 |
WOS关键词 | WESTERLY WIND CHANGES ; SEA-ICE CONTROL ; OVERTURNING CIRCULATION ; DEEP-OCEAN ; THERMOHALINE CIRCULATION ; FLUX MEASUREMENTS ; MAXIMUM ; MODELS ; CLIMATE ; DEGLACIATION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
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/204669 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Univ Chicago, Dept Geophys Sci, 5734 S Ellis Ave, Chicago, IL 60637 USA |
推荐引用方式 GB/T 7714 | Jansen, Malte F.. Glacial ocean circulation and stratification explained by reduced atmospheric temperature[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(1):45-50. |
APA | Jansen, Malte F..(2017).Glacial ocean circulation and stratification explained by reduced atmospheric temperature.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(1),45-50. |
MLA | Jansen, Malte F.."Glacial ocean circulation and stratification explained by reduced atmospheric temperature".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.1(2017):45-50. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Jansen, Malte F.]的文章 |
百度学术 |
百度学术中相似的文章 |
[Jansen, Malte F.]的文章 |
必应学术 |
必应学术中相似的文章 |
[Jansen, Malte F.]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论