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DOI	10.2166/wcc.2014.155
	Long-term variation of water vapor content and precipitation in the Haihe river basin
	Chang C.; Feng P.; Li F.; Gao Y.
发表日期	2015
ISSN	20402244
起始页码	341
结束页码	351
卷号	6 期号:2
英文摘要	Based on the Haihe river basin National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data from 1948 to 2010 and the precipitation data of 53 hydrological stations during 1957–2010, this study analyzed the variation of water vapor content and precipitation, and investigated the correlation between them using several statistical methods. The results showed that the annual water vapor content decreased drastically from 1948 to 2010. It was comparatively high from the late 1940s to the late 1960s and depreciated from the early 1970s. From the southeast to the northwest of the Haihe river basin, there was a decrease in water vapor content. For vertical distribution, water vapor content from the ground to 700 hPa pressure level accounted for 72.9% of the whole atmospheric layer, which indicated that the water vapor of the Haihe river basin was mainly in the air close to the ground. The precipitation in the Haihe river basin during 1957–2010 decreased very slightly. According to the correlation analysis, the precipitation and water vapor content changes showed statistically positive correlation, in addition, their break points were both in the 1970s. Furthermore, the high consistency between the precipitation efficiency and precipitation demonstrates that water vapor content is one of the important factors in the formation of precipitation. © IWA Publishing 2015.
英文关键词	Correlation analysis; Precipitation; Variation characteristics; Water vapor content
语种	英语
scopus关键词	Correlation methods; Precipitation (chemical); Rivers; Water resources; Watersheds; Atmospheric research reanalysis; Correlation analysis; National centers for environmental predictions; Positive correlations; Precipitation efficiency; Variation characteristics; Vertical distributions; Water vapor contents; Water vapor; precipitation assessment; rainfall; river basin; temporal variation; vertical distribution; water content; water vapor; China; Hai 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/148226
作者单位	State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin, 300072, China; Bureau of Hydrology, Haihe River Water Resources Commission, Tianjin, 300170, China
推荐引用方式 GB/T 7714	Chang C.,Feng P.,Li F.,et al. Long-term variation of water vapor content and precipitation in the Haihe river basin[J],2015,6(2).
APA	Chang C.,Feng P.,Li F.,&Gao Y..(2015).Long-term variation of water vapor content and precipitation in the Haihe river basin.Journal of Water and Climate Change,6(2).
MLA	Chang C.,et al."Long-term variation of water vapor content and precipitation in the Haihe river basin".Journal of Water and Climate Change 6.2(2015).