Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0367.1 |
Interdecadal Changes in the Leading Ocean Forcing of Sahelian Rainfall Interannual Variability: Atmospheric Dynamics and Role of Multidecadal SST Background | |
Suarez-Moreno, Roberto1,2; Rodriguez-Fonseca, Belen1,2; Barroso, Jesus A.1; Fink, Andreas H.3 | |
2018-09-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:17页码:6687-6710 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; Germany |
英文摘要 | The atmospheric response to global sea surface temperatures is the leading cause of rainfall variability in the West African Sahel. On interannual periodicities, El Nino-Southern Oscillation, the Atlantic equatorial mode, and Mediterranean warm/cold events primarily drive variations of summer rainfall over the Sahel. Nevertheless, the rainfall response to these modes of interannual SST variability has been suggested to be unstable throughout the observational record. This study explores changes in the leading patterns of covariability between Sahel rainfall and SSTs, analyzing the dynamical mechanisms at work to explain the nonstationary relationship between anomalies in these two fields. A new network of rain gauge stations across West Africa is used for the first time to investigate these instabilities during the period 1921-2010. A hypothesis is raised that the underlying SST background seems to favor some interannual teleconnections and inhibit others in terms of the cross-equatorial SST gradients and associated impacts on the location of the intertropical convergence zone. Results of this study are relevant for improving the seasonal predictability of summer rainfall in the Sahel. |
英文关键词 | Teleconnections Monsoons Interannual variability Multidecadal variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000439289500002 |
WOS关键词 | SEA-SURFACE TEMPERATURE ; WEST-AFRICAN MONSOON ; SINGULAR-VALUE DECOMPOSITION ; ENERGY FLUX EQUATOR ; TROPICAL PACIFIC ; ITCZ ; ATLANTIC ; ENSO ; CONVERGENCE ; SUMMER |
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/20246 |
专题 | 气候变化 |
作者单位 | 1.Univ Complutense Madrid, Dept Geophys & Meteorol, Madrid, Spain; 2.Univ Complutense Madrid, CSIC, Inst Geociencias, Madrid, Spain; 3.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Karlsruhe, Germany |
推荐引用方式 GB/T 7714 | Suarez-Moreno, Roberto,Rodriguez-Fonseca, Belen,Barroso, Jesus A.,et al. Interdecadal Changes in the Leading Ocean Forcing of Sahelian Rainfall Interannual Variability: Atmospheric Dynamics and Role of Multidecadal SST Background[J]. JOURNAL OF CLIMATE,2018,31(17):6687-6710. |
APA | Suarez-Moreno, Roberto,Rodriguez-Fonseca, Belen,Barroso, Jesus A.,&Fink, Andreas H..(2018).Interdecadal Changes in the Leading Ocean Forcing of Sahelian Rainfall Interannual Variability: Atmospheric Dynamics and Role of Multidecadal SST Background.JOURNAL OF CLIMATE,31(17),6687-6710. |
MLA | Suarez-Moreno, Roberto,et al."Interdecadal Changes in the Leading Ocean Forcing of Sahelian Rainfall Interannual Variability: Atmospheric Dynamics and Role of Multidecadal SST Background".JOURNAL OF CLIMATE 31.17(2018):6687-6710. |
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