Title :
Estimation of regional evapotranspiration over Northwest China by using remotely sensed data
Author :
Yunhao, Chen ; Xiaobing, Li ; Peijun, Shi
Author_Institution :
Inst. of Resources Sci., Beijing Normal Univ., China
Abstract :
A transpiration estimation model for complete vegetation and an evaporation estimation model for bare soil are presented, based on information of surface parameters. Combined with vegetation coverage data, a model for regional evapotranspiration (ET) estimation over the heterogeneous landscape is derived. This approach provided a reliable estimate of ET over Northwest China, the semiarid and arid region of China. The accuracy of the model for regional ET estimation is checked, which shows a high accuracy result. The features of ET over Northwest China are also discussed with the model
Keywords :
evaporation; transpiration; vegetation mapping; NW China; arid region; bare soil; evaporation estimation model; regional evapotranspiration; remotely sensed data; semiarid region; surface parameter information; transpiration estimation model; vegetation coverage; Aerodynamics; Atmosphere; Atmospheric modeling; Crops; Equations; Soil; Solar heating; Stability; Temperature sensors; Vegetation;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.977141
