Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.3354/cr01515 |
West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent | |
Bicher, Adeline; Diedhiou, Arona | |
2018 | |
发表期刊 | CLIMATE RESEARCH |
ISSN | 0936-577X |
EISSN | 1616-1572 |
出版年 | 2018 |
卷号 | 75期号:2页码:155-162 |
文章类型 | Article |
语种 | 英语 |
国家 | France |
英文摘要 | Over the twentieth century, Sahel rainfall has undergone extreme variations on a decadal timescale. This study investigated the recent precipitation changes in West African Sahel using a high-resolution Climate Hazards Group InfraRed Precipitation with Station (CHIRPS) product over the period 1981-2014. We found that the recent increase in precipitation results principally from an increase in the number of wet days (+10 d compared to the normal) over the entire West African Sahel band, along with an increase in the precipitation intensity over the central part of the West African Sahel (+ 3 mm d(-1)). However, this overall increase in precipitation is associated with dry spells that are becoming more frequent but on average shorter over the entire West African Sahel band (on average by 30%), and with precipitation intensity that is decreasing (around 3 mm d(-1) during the study period) in the western part of the West African Sahel (Senegal). Such reorganization (i.e. weaker but more frequent precipitation) is expected to be beneficial for agriculture and society, reducing the likelihood of both flooding and droughts. |
英文关键词 | Precipitation CHIRPS Extreme variation Senegal Sahel recovery Wet spells Isolated wet days Trends Variability |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000438447600001 |
WOS关键词 | CLIMATE-CHANGE ; RAINFALL ; VARIABILITY ; RECOVERY ; SYSTEM ; SCALES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/15138 |
专题 | 气候变化 |
作者单位 | Univ Grenoble Alpes, IRD, CNRS, Grenoble INP,IGE, F-38000 Grenoble, France |
推荐引用方式 GB/T 7714 | Bicher, Adeline,Diedhiou, Arona. West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent[J]. CLIMATE RESEARCH,2018,75(2):155-162. |
APA | Bicher, Adeline,&Diedhiou, Arona.(2018).West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent.CLIMATE RESEARCH,75(2),155-162. |
MLA | Bicher, Adeline,et al."West African Sahel has become wetter during the last 30 years, but dry spells are shorter and more frequent".CLIMATE RESEARCH 75.2(2018):155-162. |
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