Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.5740 |
Low-level circulation and precipitation simulated by CMIP5 GCMS over southeastern South America | |
Barros, Vicente R.; Doyle, Moira E. | |
2018-12-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:15页码:5476-5490 |
文章类型 | Article |
语种 | 英语 |
国家 | Argentina |
英文摘要 | Global climate models (GCMs) have, in general, problems representing precipitation over southern southeastern South America (SSESA), namely southern Brazil, Uruguay and eastern Argentina. In this study, 18 models were selected from the Coupled Model Inter-comparison Project Phase 5 to evaluate rainfall of the warm semester (October-March) when most of the rain takes place. Though GCMs reproduce the main features of the two main low-level circulation variability modes over southeastern South America, east of the Andes, particularly the two flow patterns associated with the active and weak SACZ, most of them underestimate the northern flow that brings water vapour into SSESA, as well as the mean precipitation in this region. According to an index that stands for the northern flow towards SSESA, all models, except one, have lower northern flow into SSESA than the observed reanalysis field. In addition, this index has a significant correlation across GCMs with mean SSESA precipitation, indicating that lower northern flow into SSESA is generally associated with a greater underestimation in the model precipitation. Hence, it is concluded that the weaker northern flow into SSESA simulated by most GCMs is a cause of their simulated lower precipitation in this region. |
英文关键词 | CMIP5 precipitation principal component analysis SESA stream function |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452432200003 |
WOS关键词 | FUTURE CLIMATE-CHANGE ; VARIABILITY ; MONSOON ; TEMPERATURE ; WCRP-CMIP3 ; REANALYSIS ; RESOLUTION ; SCENARIOS ; RAINFALL ; MODELS |
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/36665 |
专题 | 气候变化 |
作者单位 | Univ Buenos Aires, Dept Ciencias Atmosfera & Oceanos, CONICET UBA UMIIFAECI, Ctr Invest Mar & Atmosfera, Ciudad Univ Pabellon II,2do Piso, RA-1428 Buenos Aires, DF, Argentina |
推荐引用方式 GB/T 7714 | Barros, Vicente R.,Doyle, Moira E.. Low-level circulation and precipitation simulated by CMIP5 GCMS over southeastern South America[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(15):5476-5490. |
APA | Barros, Vicente R.,&Doyle, Moira E..(2018).Low-level circulation and precipitation simulated by CMIP5 GCMS over southeastern South America.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(15),5476-5490. |
MLA | Barros, Vicente R.,et al."Low-level circulation and precipitation simulated by CMIP5 GCMS over southeastern South America".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.15(2018):5476-5490. |
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