干旱区生态环境知识资源中心(Arid): Variations in precipitation and temperature in Xinjiang (Northwest China) and their connection to atmospheric circulation

Arid

DOI	10.3389/fenvs.2022.1082713
	Variations in precipitation and temperature in Xinjiang (Northwest China) and their connection to atmospheric circulation
	Zhou, Guixiang; Chen, Yaning; Yao, Junqiang
通讯作者	Chen, YN
来源期刊	FRONTIERS IN ENVIRONMENTAL SCIENCE
EISSN	2296-665X
出版年	2023
卷号	10
英文摘要	As one of the most vulnerable types of global ecosystems and water resource systems, arid regions are most sensitive to climate change. The Xinjiang (XJ) region is an important part of the arid region in Central Asia and is representative of global arid regions. The complex topography and underlying surface result in distinct climate change characteristics in XJ. In this study, XJ was divided into five sub-regions: the Irtysh River Basin (IRB), the economic belt on the northern slope of the Tianshan Mountains (NSTM), the Ili River Basin (ILRB), the Turpan-Hami Basin (THB), and the Tarim River Basin (TRB). The change in temperature and precipitation over XJ and its sub-regions were investigated from 1960 to 2019 using the Mann-Kendall method and cross-wavelet analysis. Moreover, the multi-timescale correlations between the variations in temperature and precipitation and the atmospheric circulation indices were explored. The results show significant warming and wetting trends in XJ from 1960 to 2019. The warming rate was 0.32 degrees C/10 a (p < 0.01), with an abrupt change during the mid-1990s. The increasing rate of precipitation was 9.24 mm/10 a (p < 0.01), with an abrupt change during the middle to late 1990s. In terms of seasonal variation, the greatest warming rate was during winter (0.37 degrees C/10 a), whereas the precipitation increase was concentrated in summer (3.48 mm/10 a). In terms of spatial variation, a significant warming trend was observed in THB, IRB, ILRB, and NSTM, and precipitation increased significantly in ILRB, NSTM, and the western TRB in southern XJ. The Hurst index analysis indicated that the warming and wetting trends in XJ will slow in the future. Climate change in XJ was closely related to atmospheric circulation at multiple timescales. The subtropical high, Northern-Hemisphere polar vortex activities and the Tibetan Plateau have a significant impact on climate change in XJ. The annual mean temperature in XJ was positively correlated with the area and intensity index of the subtropical high over North Africa, Atlantic, and North America, and negatively correlated with the area and intensity index of the Asia polar vortex. The XJ annual precipitation was positively correlated with the index of the Tibet Plateau Region one and negatively correlated with the intensity index of the Atlantic and European polar vortex, and the area and intensity index of the Northern Hemisphere polar vortex. The results of this study can provide some references for the scientific assessment and accurate prediction of climate change in XJ.
英文关键词	temperature Xinjiang atmospheric circulation indices cross-wavelet analysis precipitation
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:001049293600001
WOS关键词	CLIMATE-CHANGE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396505
推荐引用方式 GB/T 7714	Zhou, Guixiang,Chen, Yaning,Yao, Junqiang. Variations in precipitation and temperature in Xinjiang (Northwest China) and their connection to atmospheric circulation[J],2023,10.
APA	Zhou, Guixiang,Chen, Yaning,&Yao, Junqiang.(2023).Variations in precipitation and temperature in Xinjiang (Northwest China) and their connection to atmospheric circulation.FRONTIERS IN ENVIRONMENTAL SCIENCE,10.
MLA	Zhou, Guixiang,et al."Variations in precipitation and temperature in Xinjiang (Northwest China) and their connection to atmospheric circulation".FRONTIERS IN ENVIRONMENTAL SCIENCE 10(2023).