Estimation of Evapotranspiration using MODIS Sensor Data in Udupi District of Karnataka, India
G. Dinesh Kumar, B.M. Purushothaman, M. S. Vinaya, S. Suresh Babu
Abstract
The paper focuses on the estimation of evapotranspiration in the Udupi district, Karnataka using MODIS sensor images. Surface Energy Based Algorithm for Land was utilized for the purpose. Satellite measurements were compared with the concurrent measurements made from meteorological data. Good fit (r2 = 0.96) between 2 data sets with significant positive correlation (r = 0.97) is observed. The evapotranspiration values range between 85 mm and 1230 mm in the study area. Lower values are reported in December & higher values in June with vegetated plains in the foot belt of Western Ghats showing maximum evapotranspiration.