Volume 11, Issue 1 (2007)                   MJSP 2007, 11(1): 121-142 | Back to browse issues page

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Mobasheri M R, Khavarian, H, Zeaiean P, Kamaly, G. Evapo-Transpiration Assessment Using Terra/MODIS Images in the Gorgan General District. MJSP 2007; 11 (1) :121-142
URL: http://hsmsp.modares.ac.ir/article-21-5221-en.html
Evapo-Transpiration Assessment Using Terra/MODIS Images in the Gorgan General District
Mohamad Reza Mobasheri 1, Hassan Khavarian,2 , Parviz Zeaiean3 , Gholamali Kamaly,4
1- Associate Professor of Remote Sensing, Khaje Nasir University, Tehran, Iran
2- M.A. in Remote Sensing & GIS from Tarbiat Modares University
3- Department of GIS, Tarbiat Moallem University, Tehran, Iran.
4- Assistant Professor Meteorology Research Center, Tehran, I.R. Iran
Abstract:   (6978 Views)
Assessment of Evapo-Transpiration (ET) in the cases such as Irrigation programming, water basin evaporation determination, water balance calculation, water runoff estimation and climatological studies are important. It is possible to determine ET by field measurements. However these methods only can determine ET for the regions with the limited areas. This limitation has made the use of remote sensing techniques reliable for assessment of ET in a vast area. In this work, the amount of ET has been evaluated in an army wheat field located in the Golestan Province (North of the Iran) for May 5th and June 7th, 2003 using MODIS images. Surface albedo affects in the outcome of SEBAL that we estimate it using two methods, one using 1 and 2 bands of MODIS image (old method) and the other using 1 to 5 and 7 bands of MODIS image (new method). The comparison of the results of SEBAL to the results of other works showed the accuracy of the estimation of surface albedo using the new method is better than the old method. Also, the accuracy of SEBAL outcomes are relatively satisfactory and can be improved by further detailed studies.
Keywords: Remote Sensing, Evapo-Transpiration, SEBAL, Surface Heat Flux, Terra/MODIS, Gorgan
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Received: 2005/09/28 | Accepted: 2007/03/21 | Published: 2007/04/18
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