Influence analysis of meteorological variation trends on potential evaporation

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外文摘要：Evaporation， an important component of the water cycle， is a critical variable in the determination of local water resources available。 This paper selected two meteorological stations at Beijing and Tianjin as case study sites。 Based on the time series of daily meteorological data from 1958 to 2008， the potential evaporation is calculated by the Penman formula， and the variations of meteorological variables (air temperature， sunshine hour， relative humidity， wind speed) were investigated。 The results revealed that: (1) the annual potential evaporation at Beijing showed an increasing trend， while that in Tianjin showed a decreasing trend， and that the air temperature at the two stations both increased significantly; (2) sunshine hours， relative humidity and wind speed presented a decreasing trend at the two stations; and (3) relative humidity and wind speed are the key factors affecting the potential evaporation at Beijing and Tianjin， respectively。 The results of this paper provide a valuable reference for the forecast of future water resource availability， and the sustainable development and utilization of water resources in the arid and semi-arid region。

外文关键词：

potential evaporationmeteorological variablesvariation trendcorrelation analysisBeijingTianjin

作者：

HAOYANG LI、QIONGFANG LI、XIANGLIN ZOU、MEIXIU YU、CAI TAO、PENGCHENG LI

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作者单位：

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China,College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China

Changjiang Engineering Vocational College, Wuhan 430012, China

会议名称：

IWRM2010;International symposium on integrated water resources management;International symposium on methodology in hydrology

会议地点：

Nanjing(CN);Nanjing(CN);Nanjing(CN)

会议母体文献：

Hydrological cycle and water resources sustainability in changing environments

页码：

p.53-59

出版时间：

2010