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DOI | 10.1002/2017GL073236 |
Preconditioning of Antarctic maximum sea ice extent by upper ocean stratification on a seasonal timescale | |
Su, Zhan | |
2017-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study uses an observationally constrained and dynamically consistent ocean and sea ice state estimate. The author presents a remarkable agreement between the location of the edge of Antarctic maximum sea ice extent, reached in September, and the narrow transition band for the upper ocean (0-100 m depths) stratification, as early as April to June. To the south of this edge, the upper ocean has high stratification, which forbids convective fluxes to cross through; consequently, the ocean heat loss to the atmosphere is an efficient way to cool the surface ocean to the freezing point during April to September. To the north, the upper ocean has low stratification such that the ocean heat loss to the atmosphere is not efficient to cool the upper ocean. The upper ocean is instead cooled mainly through mixing with the colder inflow carried by northward Ekman transport but cannot reach the freezing point due to the nature of mixing. Therefore, upper ocean stratification, dominated by salinity here, provides an important constraint on the northward expansion of Antarctic sea ice to its maximum. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200050 |
WOS关键词 | CIRCULATION ; WATER ; TRENDS ; CONVECTION ; PENINSULA ; MODEL ; STATE |
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/27793 |
专题 | 气候变化 |
作者单位 | CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA |
推荐引用方式 GB/T 7714 | Su, Zhan. Preconditioning of Antarctic maximum sea ice extent by upper ocean stratification on a seasonal timescale[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Su, Zhan.(2017).Preconditioning of Antarctic maximum sea ice extent by upper ocean stratification on a seasonal timescale.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Su, Zhan."Preconditioning of Antarctic maximum sea ice extent by upper ocean stratification on a seasonal timescale".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
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