干旱区生态环境知识资源中心(Arid): Application of remote sensing technology in the analysis of periodic precipitation change in China's Northern semi-arid area

Arid

DOI	10.15446/esrj.v25n1.93925
	Application of remote sensing technology in the analysis of periodic precipitation change in China's Northern semi-arid area
	Zhang, Yannan; Liang, Chuan
通讯作者	Liang, C (corresponding author), Sichuan Univ, Coll Water Resource & Hydropower, Chengdu 610065, Peoples R China.
来源期刊	EARTH SCIENCES RESEARCH JOURNAL
ISSN	1794-6190
EISSN	2339-3459
出版年	2021
卷号	25 期号:1 页码:85-91
英文摘要	The remote sensing technology is used to analyze the periodic changes of precipitation in the semi-arid areas of northern China and provide a reference basis for precipitation prediction. Authors were based on GPS observation data and corresponding ground meteorological parameters to obtain the study area's comprehensive water vapor content value and use precipitation and time to establish a linear regression equation based on the content value to express the precipitation trend change. The periodic structure and abnormal changes of the periodic precipitation series on different time scales were obtained through wavelet analysis, combined with anomaly calculations to analyze the increase and decrease precipitation characteristics. The Morlet continuous wavelet transform map was also used to reflect the periodic oscillations of precipitation on different time scales. The wavelet variance map was used to reflect the distribution of regional precipitation with scale years. The authors analyzed the cycle change characteristics of the comprehensive precipitation series in Harbin, Changchun, Shenyang. and Dalian. They concluded that the annual precipitation in the four regions showed a decreasing trend in 50 years. And through the wavelet cycle frequency-domain relationship change law, the change characteristics of precipitation in the northern semi-arid area in the entire tune domain were obtained.
英文关键词	Remote sensing technology Chinat northern region pecipitation period wavelet analysis change rule oscillation period
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:000641213500010
WOS关键词	ENVIRONMENT ; WATER ; OPTIMIZATION ; ISOTOPES
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349964
作者单位	[Zhang, Yannan; Liang, Chuan] Sichuan Univ, Coll Water Resource & Hydropower, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yannan,Liang, Chuan. Application of remote sensing technology in the analysis of periodic precipitation change in China's Northern semi-arid area[J],2021,25(1):85-91.
APA	Zhang, Yannan,&Liang, Chuan.(2021).Application of remote sensing technology in the analysis of periodic precipitation change in China's Northern semi-arid area.EARTH SCIENCES RESEARCH JOURNAL,25(1),85-91.
MLA	Zhang, Yannan,et al."Application of remote sensing technology in the analysis of periodic precipitation change in China's Northern semi-arid area".EARTH SCIENCES RESEARCH JOURNAL 25.1(2021):85-91.