Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL087108 |
On the Spatiotemporal Diversity of Atlantic Nino and Associated Rainfall Variability Over West Africa and South America | |
Valles-Casanova, Ignasi1,2; Lee, Sang-Ki2; Foltz, Gregory R.2; Pelegri, Josep L.1 | |
2020-04-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:8 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; USA |
英文摘要 | The spatiotemporal evolutions of equatorial Atlantic sea surface temperature anomalies (SSTAs) during Atlantic Nino events and the associated climate impacts on the surrounding continents are extremely diverse. In this study, we construct longitude-time maps of equatorial Atlantic SSTAs for each observed Atlantic Nino event during 1948-2019 and perform a spatiotemporal empirical orthogonal function analysis to identify the four most frequently recurring Atlantic Nino varieties. The first two contrast the timing of dissipation (early terminating vs. persistent) and the other two the timing of onset (early onset vs. late onset). Largely consistent with the differences in the timings of onset and dissipation, these four varieties display remarkable differences in rainfall response over West Africa and South America. Most of the varieties are subject to onset mechanisms that involve preconditioning in boreal spring by either the Atlantic meridional mode or Pacific El Nino, while for the late onset variability there is no clear source of external forcing. |
英文关键词 | Atlantic Nino diversity West African rainfall South American rainfall tropical Atlantic variability West African monsoon Atlantic zonal mode |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000530332600024 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; EL-NINO ; FRAGILE RELATIONSHIP ; EQUATORIAL ; PACIFIC ; ENSO ; PRECIPITATION ; ANOMALIES ; EVENTS ; SAHEL |
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/279863 |
专题 | 气候变化 |
作者单位 | 1.CSIC, Unidad Asociada ULPGC CSIC, Inst Ciencies Mar, Barcelona, Spain; 2.NOAA, Atlantic Oceanog & Meteorol Lab, Miami, FL 33149 USA |
推荐引用方式 GB/T 7714 | Valles-Casanova, Ignasi,Lee, Sang-Ki,Foltz, Gregory R.,et al. On the Spatiotemporal Diversity of Atlantic Nino and Associated Rainfall Variability Over West Africa and South America[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(8). |
APA | Valles-Casanova, Ignasi,Lee, Sang-Ki,Foltz, Gregory R.,&Pelegri, Josep L..(2020).On the Spatiotemporal Diversity of Atlantic Nino and Associated Rainfall Variability Over West Africa and South America.GEOPHYSICAL RESEARCH LETTERS,47(8). |
MLA | Valles-Casanova, Ignasi,et al."On the Spatiotemporal Diversity of Atlantic Nino and Associated Rainfall Variability Over West Africa and South America".GEOPHYSICAL RESEARCH LETTERS 47.8(2020). |
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