USING S-SEBI AND REMOTE SENSING TO ESTIMATE EVAPOTRANSPIRATION OVER VEGETATED AREAS (CASE STUDY: ISFAHAN)

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KESHAVARZ M.R.; ALIZADEH A.; VAZIFEDOUST M.; ANSARI H.; DAVARI K.

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Journal: Journal of Water Resources Engineering Year:2012 | Volume:4 | Issue:11 Page(s): 11-22

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Title

USING S-SEBI AND REMOTE SENSING TO ESTIMATE EVAPOTRANSPIRATION OVER VEGETATED AREAS (CASE STUDY: ISFAHAN)

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Keywords

EVAPORATIVE FRACTIONQ2

EVAPOTRANSPIRATIONQ2

MODISQ2

REMOTE SENSINGQ2

S-SEBIQ2

Abstract

Evapotranspiration (ET) is one of the key elements in both energy and water balance studies. The satellite-assisted data acquisition method is instrumental in collecting the temporal and spatial ET variations at the regional scale. EVAPORATIVE FRACTION (EF) has been used by Roerink to simplify a procedure of ET derivation, S-SEBI, from the satellite acquired data. The EF data in this study were obtained using the reflectance and temperature collected by the MODIS satellite over the Province of Isfahan in an 8-day time steps during the 2000-01 (dry year) and 2004-05 (wet year) periods based on the application of a triangle space concept between the land surface temperature and the surface albedo data. A simplified procedure to obtain the surface albedo has been mentioned. Spatial distribution of the EF has shown that during the 2004-05 period the EF values of the province, particularly in the western and central parts were significantly higher (at the 0.01 level) than those of the dry period. Furthermore, a linear relationship (r2=90%) was obtained the EF and soil water index, which may be considered as a water stress indicator.

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APA: Copy

KESHAVARZ, M.R., ALIZADEH, A., VAZIFEDOUST, M., ANSARI, H., & DAVARI, K.. (2012). USING S-SEBI AND REMOTE SENSING TO ESTIMATE EVAPOTRANSPIRATION OVER VEGETATED AREAS (CASE STUDY: ISFAHAN). WATER ENGINEERING, 4(11), 11-22. SID. https://sid.ir/paper/169472/en

Vancouver: Copy

KESHAVARZ M.R., ALIZADEH A., VAZIFEDOUST M., ANSARI H., DAVARI K.. USING S-SEBI AND REMOTE SENSING TO ESTIMATE EVAPOTRANSPIRATION OVER VEGETATED AREAS (CASE STUDY: ISFAHAN). WATER ENGINEERING[Internet]. 2012;4(11):11-22. Available from: https://sid.ir/paper/169472/en

IEEE: Copy

M.R. KESHAVARZ, A. ALIZADEH, M. VAZIFEDOUST, H. ANSARI, and K. DAVARI, “USING S-SEBI AND REMOTE SENSING TO ESTIMATE EVAPOTRANSPIRATION OVER VEGETATED AREAS (CASE STUDY: ISFAHAN),” WATER ENGINEERING, vol. 4, no. 11, pp. 11–22, 2012, [Online]. Available: https://sid.ir/paper/169472/en

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