Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/joc.4893 |
Extreme precipitation events and their relationship with ENSO and MJO phases over northern South America | |
Shimizu, Marilia Harumi1; Ambrizzi, Tercio1; Liebmann, Brant2 | |
2017-05-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY |
ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Brazil; USA |
英文摘要 | Several droughts and floods in Amazonia and Northeast Brazil have occurred in recent years and projections from Intergovernmental Panel on Climate Change indicate an increase of these extreme events. El Nino Southern Oscillation (ENSO) is one of the phenomena associated with extreme rainfall events in the Amazon. However, recent studies have indicated that the basic response of ENSO is dependent on the Madden-(Julian Oscillation (MJO) phase. Hence, this study analyses the MJO influence on precipitation extreme events over northern South America in El Nino and La Nina years. Extreme precipitation events over northern South America for the rainy season (December-(May) were obtained through a composite analysis of the combinations of ENSO and MJO phases. Most of the dry extreme events occurred during El Nino periods, while wet extreme events were more recurrent during La Nina or neutral years. However, the results showed that the MJO convection could enhance or weaken the basic response of ENSO on extreme precipitation events. Moreover, dry/wet extreme events over both Amazon and Northeast Brazil are favoured when MJO convection over Indonesia is enhanced (MJO phases 4 and 5)/suppressed (MJO phase 2). Additionally, the interannual variability of the extreme events showed an increasing linear trend for dry extreme events and a decreasing linear trend for wet extreme events. The results presented here contribute to a better understanding of the climate variability and will be helpful for the forecast of ENSO effects on extreme events over northern South America. |
英文关键词 | extreme events ENSO and MJO interaction northern South America |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404849200014 |
WOS关键词 | OUTGOING LONGWAVE RADIATION ; MADDEN-JULIAN OSCILLATION ; ATLANTIC CONVERGENCE ZONE ; ATMOSPHERIC CIRCULATION ; CLIMATIC EVENTS ; PRINCIPAL MODES ; AMAZON BASIN ; RAINFALL ; DROUGHT ; VARIABILITY |
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/36694 |
专题 | 气候变化 |
作者单位 | 1.Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci, Rua Matao 1226, BR-05508090 Sao Paulo, SP, Brazil; 2.Univ Colorado, Boulder, CO 80309 USA |
推荐引用方式 GB/T 7714 | Shimizu, Marilia Harumi,Ambrizzi, Tercio,Liebmann, Brant. Extreme precipitation events and their relationship with ENSO and MJO phases over northern South America[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37(6). |
APA | Shimizu, Marilia Harumi,Ambrizzi, Tercio,&Liebmann, Brant.(2017).Extreme precipitation events and their relationship with ENSO and MJO phases over northern South America.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37(6). |
MLA | Shimizu, Marilia Harumi,et al."Extreme precipitation events and their relationship with ENSO and MJO phases over northern South America".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37.6(2017). |
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