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DOI | 10.1002/joc.5865 |
Modelling the role of Atlantic air-sea interaction in the impact of Madden-Julian Oscillation on South American climate | |
Barreiro, Marcelo1; Sitz, Lina2,4,5; de Mello, Santiago1; Franco, Ramon Fuentes3; Renom, Madeleine1; Farneti, Riccardo2 | |
2019-02-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2019 |
卷号 | 39期号:2页码:1104-1116 |
文章类型 | Article |
语种 | 英语 |
国家 | Uruguay; Italy; Sweden; Argentina |
英文摘要 | This study addresses the role of Atlantic air-sea interaction in the remote influence of the Madden-Julian Oscillation (MJO) on eastern South American climate during austral summertime. To disentangle the different processes involved, reanalysis data as well as a regional climate model run in coupled mode and as a stand-alone atmosphere are used. The simulations are able to represent the observed influences of the MJO in precipitation and surface air temperature. In particular, in both setups the model is able to represent adequately the atmospheric teleconnections associated with the MJO, which involves the development of a barotropic cyclonic anomaly over South America between 30 degrees S and 60 degrees S, which favours a southwards shift of the South Atlantic Convergence Zone (SACZ) and a warming in eastern Brazil. Moreover, model simulations support the hypothesis that air-sea interaction is important to set up the strength of the rainfall response in the SACZ. That is, the development of a local warm SST anomaly forced by heat flux anomalies associated with the direct MJO impact in turn feeds back into the atmosphere generating a stronger surface convergence that shifts the SACZ southwards. In the absence of this SST-forced response the SACZ still shifts southwards, but anomalies are much weaker and less extensive. We also found that the coupled model represents more adequately the remotely forced MJO temperature signal over eastern Brazil, probably due to a too strong response of the stand-alone model to prescribed sea surface temperature. |
英文关键词 | air-sea interaction MJO regional climate model South America teleconnections |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000459665000034 |
WOS关键词 | CONVERGENCE ZONE ; EXTREME PRECIPITATION ; SURFACE-TEMPERATURE ; VARIABILITY ; OCEAN ; CIRCULATION ; INTENSITY |
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/36802 |
专题 | 气候变化 |
作者单位 | 1.Univ Republica, Fac Ciencias, Dept Ciencias Atmosfera, Montevideo, Uruguay; 2.Abdus Salam Int Ctr Theoret Phys, Earth Syst Phys Sect, Trieste, Italy; 3.Swedish Meteorol & Hydrol Inst, Rossby Ctr, Norrkopping, Sweden; 4.Univ Nacl Sur, Bahia Blanca, Buenos Aires, Argentina; 5.Inst Nazl Oceanog & Geofis Sperimentale, Trieste, Italy |
推荐引用方式 GB/T 7714 | Barreiro, Marcelo,Sitz, Lina,de Mello, Santiago,et al. Modelling the role of Atlantic air-sea interaction in the impact of Madden-Julian Oscillation on South American climate[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2019,39(2):1104-1116. |
APA | Barreiro, Marcelo,Sitz, Lina,de Mello, Santiago,Franco, Ramon Fuentes,Renom, Madeleine,&Farneti, Riccardo.(2019).Modelling the role of Atlantic air-sea interaction in the impact of Madden-Julian Oscillation on South American climate.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(2),1104-1116. |
MLA | Barreiro, Marcelo,et al."Modelling the role of Atlantic air-sea interaction in the impact of Madden-Julian Oscillation on South American climate".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.2(2019):1104-1116. |
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