Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.3354/cr01495 |
Role of Weddell Sea ice in South Atlantic atmospheric variability | |
Morioka, Yushi1; Engelbrecht, Francois2,3; Behera, Swadhin K.1 | |
2018 | |
发表期刊 | CLIMATE RESEARCH |
ISSN | 0936-577X |
EISSN | 1616-1572 |
出版年 | 2018 |
卷号 | 74期号:2页码:171-184 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan; South Africa |
英文摘要 | We investigated the role of Weddell Sea ice in atmospheric variability over the South Atlantic by conducting observational data analysis and coupled general circulation model (CGCM) experiments. Weddell Sea ice exhibits a pronounced interannual variability in early austral summer (November-January). Low sea-ice concentration (SIC) anomalies in the Weddell Sea are strongly associated with anticyclonic atmospheric circulation anomalies in the South Atlantic. Composite analysis reveals that the low SIC anomalies in the Weddell Sea may be attributed to increased solar radiation and northwesterly wind anomalies. The low SIC anomalies, in turn, contribute to warmer skin temperature in the band of 60-70 degrees S and enhance the near-surface atmospheric stability north of this band, implying favorable conditions for sustaining the anticyclonic circulation anomalies in the South Atlantic. This intriguing association between the SIC and atmospheric circulation anomalies is also simulated in CGCM experiments, e.g. when the interannual sea surface temperature variability in the tropics and mid-latitudes is suppressed. These results suggest that Weddell Sea ice, which may undergo interannual variation via air-sea-ice interactions in the high latitudes, influences atmospheric variability over the South Atlantic. |
英文关键词 | Air-sea-ice interaction Interannual variability South Atlantic Atmospheric teleconnection Coupled general circulation model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418809900007 |
WOS关键词 | REGIONAL CLIMATE VARIABILITY ; GENERAL-CIRCULATION MODEL ; VARYING BASIC FLOW ; WAVE-ACTIVITY FLUX ; SEMIANNUAL OSCILLATION ; AMERICAN PATTERN ; OCEAN ; HEMISPHERE ; MECHANISM ; DIPOLE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
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/38611 |
专题 | 气候变化 |
作者单位 | 1.JAMSTEC, Applicat Lab, Yokohama, Kanagawa, Japan; 2.CSIR, Nat Resources & Environm, Pretoria, South Africa; 3.Univ Witwatersrand, Sch Geog Archaeol & Environm Sci, Johannesburg, South Africa |
推荐引用方式 GB/T 7714 | Morioka, Yushi,Engelbrecht, Francois,Behera, Swadhin K.. Role of Weddell Sea ice in South Atlantic atmospheric variability[J]. CLIMATE RESEARCH,2018,74(2):171-184. |
APA | Morioka, Yushi,Engelbrecht, Francois,&Behera, Swadhin K..(2018).Role of Weddell Sea ice in South Atlantic atmospheric variability.CLIMATE RESEARCH,74(2),171-184. |
MLA | Morioka, Yushi,et al."Role of Weddell Sea ice in South Atlantic atmospheric variability".CLIMATE RESEARCH 74.2(2018):171-184. |
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