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DOI | 10.1002/joc.5891 |
Effects of two different La Nina types on the South American rainfall | |
Andreoli, Rita Valeria1; Kayano, Mary Toshie2; Viegas, Juarez3; de Oliveira, Suzana Soares3; Ferreira de Souza, Rodrigo Augusto1; Garcia, Samia Regina4; Teles Rego, Willy Hagi1; Leal de Oliveira, Maria Betania1 | |
2019-03-15 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:3页码:1415-1428 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil |
英文摘要 | The paper tests if the two La Nina (LN) types can be distinguished from each other using their climate impacts on northeastern Brazil (NEB). To this end, all LN events during the 1901-2010 period followed by a wet or dry rainy season (from February to April) in NEB are classified into two categories: WET-LN and DRY-LN. The global and regional anomalous atmospheric circulation patterns and the rainfall anomaly patterns in South America associated with the two cases are analysed. The WET-LN and DRY-LN events present, respectively, the eastern Pacific LN and central Pacific LN sea surface temperature (SST) anomaly features in the tropical Pacific. On the other hand, the WET-LN features an interhemispheric SST dipole pattern in the tropical Atlantic, and the DRY-LN, colder-than-normal surface waters in the tropical South Atlantic (TSA) and equatorial Atlantic during MAM(+1). The two analysed cases show regional differential circulation patterns in all seasons. The anomalous wetness over northern and northwestern South America occurs for the WET-LN type during JJA(0)-DJF(+1) and for the DRY-LN type, during DJF(+1)-MAM(+1). The anomalous dryness over SESA is more evident for the WET-LN during JJA(0) and MAM(+1), and for the DRY-LN, during SON(0). Anomalous dryness occurs in central and eastern South America noted during JJA(0) and DJF(+1) for both cases analysed. The precipitation anomalies in northern South America during DJF(+1) are stronger and more extensive for the DRY-LN than for the WET-LN events due to the action of both the anomalous (double) Walker and Hadley cells for the DRY-LN, in contrast with the exclusive action of an anomalous Walker cell for the WET-LN case. Also, a double Walker cell drives the dry-wet dipole between northern South America and NEB during MAM(+1) for the DRY-LN. Our results might be useful mainly for climate monitoring purposes. |
英文关键词 | La Nina precipitation South America |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461606600019 |
WOS关键词 | TROPICAL ATLANTIC ; EL-NINO ; ENSO ; PRECIPITATION ; VARIABILITY ; PACIFIC ; EVENTS ; IMPACTS ; BRAZIL ; MODES |
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/36771 |
专题 | 气候变化 |
作者单位 | 1.Univ Estado Amazonas, Escola Super Tecnol, Ave Darcy Vargas 1200,Parque 10 Novembro, BR-69065020 Manaus, Amazonas, Brazil; 2.Inst Nacl Pesquisas Espaciais, Div Modelagem & Desenvolvimento, Ctr Previsao Tempo & Estudos Climat, Sao Jose Dos Campos, Brazil; 3.Univ Estado Amazonas, INPA, CLIAMB, Programa Posgrad Clima & Ambiente, Manaus, Amazonas, Brazil; 4.Univ Fed Itajuba, Inst Recursos Nat, Itajuba, Brazil |
推荐引用方式 GB/T 7714 | Andreoli, Rita Valeria,Kayano, Mary Toshie,Viegas, Juarez,et al. Effects of two different La Nina types on the South American rainfall[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(3):1415-1428. |
APA | Andreoli, Rita Valeria.,Kayano, Mary Toshie.,Viegas, Juarez.,de Oliveira, Suzana Soares.,Ferreira de Souza, Rodrigo Augusto.,...&Leal de Oliveira, Maria Betania.(2019).Effects of two different La Nina types on the South American rainfall.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(3),1415-1428. |
MLA | Andreoli, Rita Valeria,et al."Effects of two different La Nina types on the South American rainfall".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.3(2019):1415-1428. |
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