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Estimation of evapotranspiration in Heihe River basin using HJ-1AB data

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3 Author(s)
Xu Hongwei ; State Key Lab. of Remote Sensing Sci., Beijing Normal Univ., Beijing, China ; Sun Rui ; Du Junping

ET plays an important role in the energy exchange mass transfer between the hydrosphere, atmosphere and biosphere. ET is a critical variable in hydrological modeling and provides important boundary conditions for weather prediction. Environment and Disasters Monitoring Microsatellite Constellation of A and B star (HJ-1A/B), which was developed by China, has high space and temporary resolution and is widely used. In this paper, SEBS model and Priestley-Taylor Equation combined with Ts-NDVI feature space are used to estimate ET of Heihe River basin. The remote sensing data including visible and infrared data are acquired by HJ-1A/B satellites. We use GLDAS ET product as validation data. By comparison, the results show that HJ-1A/B data can be effectively used to estimate ET.

Published in:

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Date of Conference:

22-27 July 2012