Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071170 |
The relationship between the Guinea Highlands and the West African offshore rainfall maximum | |
Hamilton, H. L.1; Young, G. S.1; Evans, J. L.1; Fuentes, J. D.1; Ocasio, K. M. Nunez1,2 | |
2017-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Satellite rainfall estimates reveal a consistent rainfall maximum off the West African coast during the monsoon season. An analysis of 16years of rainfall in the monsoon season is conducted to explore the drivers of such copious amounts of rainfall. Composites of daily rainfall and midlevel meridional winds centered on the days with maximum rainfall show that the day with the heaviest rainfall follows the strongest midlevel northerlies but coincides with peak low-level moisture convergence. Rain type composites show that convective rain dominates the study region. The dominant contribution to the offshore rainfall maximum is convective development driven by the enhancement of upslope winds near the Guinea Highlands. The enhancement in the upslope flow is closely related to African easterly waves propagating off the continent that generate low-level cyclonic vorticity and convergence. Numerical simulations reproduce the observed rainfall maximum and indicate that it weakens if the African topography is reduced. |
英文关键词 | Africa monsoon rainfall topography Guinea Highlands AEW |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000395652600065 |
WOS关键词 | TROPICAL MOUNTAIN-RANGES ; LEE VORTICITY PRODUCTION ; EASTERN NORTH PACIFIC ; PART I ; WAVES ; CYCLONES ; SYSTEMS ; MECHANISM ; PACKAGE ; MODELS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27119 |
专题 | 气候变化 |
作者单位 | 1.Penn State Univ, Dept Meteorol & Atmospher Sci, University Pk, PA 16802 USA; 2.Univ Puerto Rico, Dept Phys, Mayaguez, PR USA |
推荐引用方式 GB/T 7714 | Hamilton, H. L.,Young, G. S.,Evans, J. L.,et al. The relationship between the Guinea Highlands and the West African offshore rainfall maximum[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(2). |
APA | Hamilton, H. L.,Young, G. S.,Evans, J. L.,Fuentes, J. D.,&Ocasio, K. M. Nunez.(2017).The relationship between the Guinea Highlands and the West African offshore rainfall maximum.GEOPHYSICAL RESEARCH LETTERS,44(2). |
MLA | Hamilton, H. L.,et al."The relationship between the Guinea Highlands and the West African offshore rainfall maximum".GEOPHYSICAL RESEARCH LETTERS 44.2(2017). |
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