Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL072378 |
The temperature-ballast hypothesis explains carbon export efficiency observations in the Southern Ocean | |
Britten, Gregory L.; Wakamatsu, Lael; Primeau, Francois W. | |
2017-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Carbon export from the Southern Ocean exerts a strong control on the ocean carbon sink, yet recent observations from the region demonstrate poorly understood relationships in which carbon export efficiency is weakly related to temperature. These observations conflict with traditional theory where export efficiency increases in colder waters. A recently proposed "temperature-ballast hypothesis" suggests an explanatory mechanism where the effect of temperature-dependent respiration is masked by variation in particle-ballast as upwelling waters move northward from Antarctica. We use observations and statistical models to test this mechanism and find positive support for the hypothesized temperature-ballast interactions. Best fitting models indicate a significant relation between export efficiency and silica-ballast while simultaneously revealing the expected inverse effect of temperature once ballast is accounted for. These findings reconcile model predictions, metabolic theory, and carbon export observations in the Southern Ocean and have consequences for how the ocean carbon sink responds to climate change. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396411100026 |
WOS关键词 | INVERSE RELATIONSHIP |
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/29031 |
专题 | 气候变化 |
作者单位 | Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA |
推荐引用方式 GB/T 7714 | Britten, Gregory L.,Wakamatsu, Lael,Primeau, Francois W.. The temperature-ballast hypothesis explains carbon export efficiency observations in the Southern Ocean[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(4). |
APA | Britten, Gregory L.,Wakamatsu, Lael,&Primeau, Francois W..(2017).The temperature-ballast hypothesis explains carbon export efficiency observations in the Southern Ocean.GEOPHYSICAL RESEARCH LETTERS,44(4). |
MLA | Britten, Gregory L.,et al."The temperature-ballast hypothesis explains carbon export efficiency observations in the Southern Ocean".GEOPHYSICAL RESEARCH LETTERS 44.4(2017). |
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