干旱区生态环境知识资源中心(Arid): Spatiotemporal variations of meteorological drought and its dominant factors in different climate regions for the first two decades of the twenty-first century

Arid

DOI	10.1007/s00704-024-04833-w
	Spatiotemporal variations of meteorological drought and its dominant factors in different climate regions for the first two decades of the twenty-first century
	Xing, Yincong; Li, Yanzhong; Bai, Peng; Zhuang, Jiacheng; Feng, Aiqing; Huang, Manjie; Yan, Haiwen
通讯作者	Li, YZ
来源期刊	THEORETICAL AND APPLIED CLIMATOLOGY
ISSN	0177-798X
EISSN	1434-4483
出版年	2024
卷号	155 期号:5 页码:3631-3645
英文摘要	Drought events have become increasingly frequent and intensive due to the combined influence of climate change and anthropogenic activities. However, it remains unclear how meteorological drought characteristics (duration, severity, and intensity) respond to the changing environment and what are the dominant factors determining the drought evolution in different climate regions. Here, we divide mainland China into four sub-climatic regions, namely the Humid region (HR), Transition region (TR), Arid region (AR), and Tibetan Plateau (TP), based on the aridity index and geomorphology. Then systematically investigate the spatiotemporal patterns of drought characteristics in different climate regions over China (during 2000-2019) based on the SPEI and run theory. And the contribution of precipitation (Pre) and potential evapotranspiration (PET) to drought characteristics are quantitatively analyzed using a detrended numerical experiment method. We find that (1) a pattern of dry gets drier, wet gets wetter was found in China. (2) Meteorological drought characteristics exhibit apparent regional heterogeneity: droughts in AR are of long duration and high severity, while droughts in HR and TR show a pattern of high frequency. (3) An increase in the annual Pre (PET) resulted in increases (decreases) in average SPEI in China of 45.18% (31.62%). Therefore, Pre is the dominant factor determining the increase of SPEI over China. For the four sub-climatic regions, Pre is the dominant factor in the increase of SPEI in TR and HR, with the contribution of 41.64% and 60.16%. PET is the dominant factor in the decrease of SPEI in AR, with the contribution of 50.11%. The contributions of Pre (45.09%) and PET (44.09%) in TP are roughly equivalent. These findings provide valuable insights for policymakers in shaping climate change adaptation and mitigation strategies. By understanding the leading meteorological factors influencing drought, policymakers can implement effective measures to minimize the influence of disasters.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001153607600001
WOS关键词	POTENTIAL EVAPOTRANSPIRATION ; SOUTHWEST CHINA ; PRECIPITATION ; VARIABILITY ; EVOLUTION ; TRENDS ; SHOW ; EAST
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405787
推荐引用方式 GB/T 7714	Xing, Yincong,Li, Yanzhong,Bai, Peng,et al. Spatiotemporal variations of meteorological drought and its dominant factors in different climate regions for the first two decades of the twenty-first century[J],2024,155(5):3631-3645.
APA	Xing, Yincong.,Li, Yanzhong.,Bai, Peng.,Zhuang, Jiacheng.,Feng, Aiqing.,...&Yan, Haiwen.(2024).Spatiotemporal variations of meteorological drought and its dominant factors in different climate regions for the first two decades of the twenty-first century.THEORETICAL AND APPLIED CLIMATOLOGY,155(5),3631-3645.
MLA	Xing, Yincong,et al."Spatiotemporal variations of meteorological drought and its dominant factors in different climate regions for the first two decades of the twenty-first century".THEORETICAL AND APPLIED CLIMATOLOGY 155.5(2024):3631-3645.