干旱区生态环境知识资源中心(Arid): Long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment, South Africa

Arid

DOI	10.2166/wcc.2022.427
	Long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment, South Africa
	Makungo, Rachel; Mashinye, Mosedi Deseree
通讯作者	Makungo, R
来源期刊	JOURNAL OF WATER AND CLIMATE CHANGE
ISSN	2040-2244
EISSN	2408-9354
出版年	2022
卷号	13 期号:6 页码:2319-2336
英文摘要	The study investigated long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment. It is crucial to determine changes in rainfall to support efforts to adapt to climate change in highly vulnerable semi-arid areas. Trends for long-term seasonal and annual rainfall magnitude and duration were determined using Mann-Kendall (MK) and quantile regression (QR) methods. Sen's slope was used to determine the magnitude of change in rainfall. Correlation analysis was conducted to determine the influence of altitude and land-use change in rainfall trends. There were dominant non-statistically significant decreasing trends for annual, seasonal rainfall magnitude, and rainfall duration. Trends from QR at low (0.1 and 0.2) and high (0.7 and 0.9) quantiles mostly deviated from those of MK. There were weak and variable correlations of long-term rainfall trends with altitude and land-use change. Land-use change and topography may therefore not adequately explain the variations of trends. Further studies are essential to understand the interaction of environmental various factors and their influence on rainfall trends. Variations of trends will impact future water resource availability and allocation. It is important to consider the deviations when developing climate change adaptation measures and ensure improved decision-making.
英文关键词	climate change rainfall duration and magnitude seasonal and annual rainfall semi-arid trends variability
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000799345800001
WOS关键词	VARIABILITY ; ALTITUDE
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393634
推荐引用方式 GB/T 7714	Makungo, Rachel,Mashinye, Mosedi Deseree. Long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment, South Africa[J],2022,13(6):2319-2336.
APA	Makungo, Rachel,&Mashinye, Mosedi Deseree.(2022).Long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment, South Africa.JOURNAL OF WATER AND CLIMATE CHANGE,13(6),2319-2336.
MLA	Makungo, Rachel,et al."Long-term trends and changes in rainfall magnitude and duration in a semi-arid catchment, South Africa".JOURNAL OF WATER AND CLIMATE CHANGE 13.6(2022):2319-2336.