干旱区生态环境知识资源中心(Arid): Temporal changes in seasonal precipitation over the Sahara Desert from 1979 to 2016

Arid

	Temporal changes in seasonal precipitation over the Sahara Desert from 1979 to 2016
	Celestin Sindikubwabo; Feng Qi; Li Ruolin; Cheng Wenju; Ma Jian; Telesphore Habiyakare; Vincent Nzabarinda
来源期刊	寒旱区科学
ISSN	1674-3822
出版年	2021
卷号	13 期号:3 页码:1674-3822
英文摘要	Rainfall variability dominates livelihoods in all countries of Saharan Africa.To better understand the processes involved in Sahara precipitation changes,we used the Global Precipitation Climatology Center (GPCC) dataset to examine dry and wet seasonal trends in the Sahara region from 1979 to 2016.We also used the European Centre for Medium-Range Weather Forecasts (ECMWF) to evaluate the general atmospheric circulation associated with seasonal change of Sahara precipitation.The Mann-Kendall test and Theil sens' slope estimator methods were adopted to test and estimate the significance and weight of precipitation trend,respectively.The results revealed that Sahara precipitation has increased significantly.The seasonal evaluation shows a positive trend of 0.42 mm/decade and 1.43 mm/decade in JAS (June,August,and September) seasons for the northern and southern Saharan Desert,respectively.Moreover,the JFMA (January,February,March,and April) period shows a negative trend but not statistically significant.An examination of the general circulation and moisture transport changes suggested an increase of rainfall in southern Sahara.The wet period is also driven by northward penetration of moisture originating from the Sahel region,African Easterly Jet (AEJ),and weakening in the upper tropospheric zonal wind.Summer rainfall has also been likely associated with positive anomalies of sea surface temperature (SST) in the North Tropical Atlantic (NTA) and the Mediterranean Sea.
英文关键词	Sahara precipitation variability arid Africa climate
类型	Article
语种	英语
国家	中国
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6999641
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365112
作者单位	Celestin Sindikubwabo, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences (CAS);;University of Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin,Chinese Academy of Sciences (CAS);;, Lanzhou;;, Gansu;;Beijing 730000;;100049.; Cheng Wenju, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences (CAS);;University of Chinese Academy of Sciences, Key Laboratory of Eco-hydrology of Inland River Basin,Chinese Academy of Sciences (CAS);;, Lanzhou;;, Gansu;;Beijing 730000;;100049.; Feng Qi, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences (CAS), Key Laboratory of Eco-hydrology of Inland River Basin,Chinese Academy of Sciences (CAS), Lanzhou, Gansu 730000, China.; Li Ruolin, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences (CAS);;Qilian Mountains Eco environment Research Center, Key Laboratory of Eco-hydrology of Inland River Basin,Chinese Academy of Sciences (CAS);...
推荐引用方式 GB/T 7714	Celestin Sindikubwabo,Feng Qi,Li Ruolin,et al. Temporal changes in seasonal precipitation over the Sahara Desert from 1979 to 2016[J],2021,13(3):1674-3822.
APA	Celestin Sindikubwabo.,Feng Qi.,Li Ruolin.,Cheng Wenju.,Ma Jian.,...&Vincent Nzabarinda.(2021).Temporal changes in seasonal precipitation over the Sahara Desert from 1979 to 2016.寒旱区科学,13(3),1674-3822.
MLA	Celestin Sindikubwabo,et al."Temporal changes in seasonal precipitation over the Sahara Desert from 1979 to 2016".寒旱区科学 13.3(2021):1674-3822.