Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5292 |
Rainfall along the coast of Peru during strong El Nino events | |
Sanabria, Janeet1,2; Bourrel, Luc1; Dewitte, Boris3,4,5; Frappart, Frederic1,3; Rau, Pedro1; Solis, Olimpio2; Labat, David1 | |
2018-03-30 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:4页码:1737-1747 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Peru; Chile |
英文摘要 | While, climatologically, most areas of the Peruvian Pacific region do not experience precipitation, they can be affected by heavy rain and flooding during strong El Nino events with severe socio-economic impacts. Only four strong El Nino events took place within the last five decades (1972/1973, 1982/1983, 1997/1998 and 2015/2016) which led to significant rainfall events in the northern part of Peru. Here a detailed analysis of the evolution of precipitation during these events was performed using gauge records from 1964 to 2016 from a network of 145 meteorological stations located along the Peruvian Pacific region. Through empirical orthogonal function analysis, the rainfall anomalies variability is interpreted as resulting from the combination of a meridional see-saw mode (North-South) (Ep mode) and a zonal see-saw mode (East-West) (Cp mode) that represent, respectively, 34 and 21% of the explained variance. It is shown that the extreme 1982/1983 and 1997/1998 El Nino events have a dominant projection on the Ep mode that has a strong loading in the northern region, while the 1972/1973 and 2015/2016 El Nino events have a relatively weak projection onto the Ep mode (about ten times less at the peak rainy season than the extreme events) and mostly project onto the Cp mode. Also, it is shown that while all events are associated with positive rainfall anomalies in the northern part of Peru which is accounted for by the Ep mode, the evolution of rainfall anomalies along the Cp mode exhibits a significant dispersion. This suggests that the impact of strong El Nino events on the highlands along the coast cannot solely be inferred from the magnitude of the sea surface temperature anomalies in the central equatorial Pacific. Overall, our study illustrates the nonlinearity of the ENSO teleconnection on the rainfall along the coast of Peru during strong El Nino events. |
英文关键词 | strong El Nino events rainfall anomalies variability rainfall anomalies modes rainfall Peruvian Pacific coast highlands |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000427011700010 |
WOS关键词 | SOUTHERN-OSCILLATION ; EQUATORIAL PACIFIC ; NORTHERN PERU ; TELECONNECTIONS ; ENSO ; VARIABILITY ; PRECIPITATION ; FREQUENCY ; ANOMALIES ; CLIMATE |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | 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/36918 |
专题 | 气候变化 |
作者单位 | 1.Univ Toulouse, CNRS, UMR 5563, GET,IRD,OMP,CNES, F-31400 Toulouse, France; 2.SENAMHI, Lima, Peru; 3.Univ Toulouse, CNRS, UMR 5566, LEGOS,IRD,OMP,CNES, Toulouse, France; 4.Ctr Estudios Avanzado Zonas Aridas, Coquimbo, Chile; 5.Univ Catolica Norte, Fac Ciencias Mar, Dept Biol, Coquimbo, Chile |
推荐引用方式 GB/T 7714 | Sanabria, Janeet,Bourrel, Luc,Dewitte, Boris,et al. Rainfall along the coast of Peru during strong El Nino events[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(4):1737-1747. |
APA | Sanabria, Janeet.,Bourrel, Luc.,Dewitte, Boris.,Frappart, Frederic.,Rau, Pedro.,...&Labat, David.(2018).Rainfall along the coast of Peru during strong El Nino events.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(4),1737-1747. |
MLA | Sanabria, Janeet,et al."Rainfall along the coast of Peru during strong El Nino events".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.4(2018):1737-1747. |
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