气候变化领域集成服务门户(CCPortal): Analysis of precipitation changes and its possible reasons in Songhua river basin of China

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DOI	10.2166/wcc.2019.250
	Analysis of precipitation changes and its possible reasons in Songhua river basin of China
	Li T.; Zhou Z.; Fu Q.; Liu D.; Li M.; Hou R.; Pei W.; Li L.
发表日期	2020
ISSN	20402244
起始页码	839
结束页码	864
卷号	11 期号:3
英文摘要	Changes in precipitation have a great influence on human beings. The study of precipitation can aid in understanding regional climate change characteristics and the hydrological cycle. Therefore, in this study, the standardized precipitation index is combined with a simple linear regression test, Mann–Kendall trend analysis, Sen’s slope method, principal component analysis and partial correlation analysis to study precipitation and drought distributions in the Songhua River Basin and the causes of precipitation changes in this area. The results are as follows: (1) The average annual precipitation change in this area is not significant, but there are significant differences in seasonal precipitation changes. (2) On a long-term time scale, this area presents a wet trend from southeast to northwest. On a short-term time scale, spring and winter show a wet trend. Winter has changed significantly. Summer and autumn show a dry trend. (3) The average annual and rainy season (RS) precipitation shows step change characteristics. Precipitation change in RS is the main reason for annual precipitation change. (4) The Asian meridional circulation/zonal index have significant effects on precipitation and dry/wet changes in this area. The western Pacific subtropical high and the East Asian summer monsoon are also important factors in this area. © IWA Publishing 2020.
英文关键词	Atmospheric circulation index; Average annual precipitation; Monthly average precipitation; Songhua River Basin; Standardized precipitation index
语种	英语
scopus关键词	Correlation methods; Watersheds; Average annual precipitation; East Asian summer monsoon; Meridional circulation; Regional climate changes; Seasonal precipitations; Simple linear regression; Songhua river basins; Standardized precipitation index; Climate change; annual variation; climate change; hydrological cycle; precipitation assessment; principal component analysis; regional climate; trend analysis; China; Songhua Basin
来源期刊	Journal of Water and Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147918
作者单位	School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
推荐引用方式 GB/T 7714	Li T.,Zhou Z.,Fu Q.,et al. Analysis of precipitation changes and its possible reasons in Songhua river basin of China[J],2020,11(3).
APA	Li T..,Zhou Z..,Fu Q..,Liu D..,Li M..,...&Li L..(2020).Analysis of precipitation changes and its possible reasons in Songhua river basin of China.Journal of Water and Climate Change,11(3).
MLA	Li T.,et al."Analysis of precipitation changes and its possible reasons in Songhua river basin of China".Journal of Water and Climate Change 11.3(2020).