HR: 16:15h
AN: H34D-02    [Abstracts]
TI: Study on Change Trend of Pan Evaporation in Recent Years of China
AU: Zeng, Y
EM: jlzengyan@sina.com.cn
AF: Yan Zeng, Jiangsu Institute of Meteorlogical Sciences, Nanjing, 210008, China
AU: * Liu, C
EM: liucm@igsnrr.ac.cn
AF: Changming Liu, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China
AU: Qiu, X
EM: qiuxinfa@sina.com.cn
AF: Xinfa Qiu, School of Remote Sensing, Nanjing University of Information Science and Technology, Nanjing, 210044, China
AB: Based on observational data of 664 meteorological stations in China from 1960 to 2000 and combined with the Geographic Information System of ArcGIS, the spatial and temporal distributions and their trends for pan evaporation in China are investigated. The results indicate that, from 1960 to 2000, the rate of pan evaporation has steadily decreased in China. Compared with the period of 1960s to 1970s, the rate of annual pan evaporation during 1980s to 1990s has decreased 99.8mm. Seasonal analysis show that the decrease of pan evaporation is mainly in spring, summer and winter. Spatial distribution of the rate of change shows that the decrease of pan evaporation is mainly occurred in East China and Central South China. Further analysis show that the decrease of pan evaporation is mainly related to reductions in solar irradiance resulting from sun-shine percentage decrease.
DE: 1637 Regional climate change
SC: Hydrology [H]
MN: 2007 Fall Meeting