Assessment of Blaney-Criddle Equation for Calculating Reference Evapotranspiration with NOAA/AVHRR Data

Ali Rahimikhoob () and Mohsen Hosseinzadeh ()

Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), 2014, vol. 28, issue 10, 3365-3375

Abstract: Reference evapotranspiration (ET 0 ) data are desirable for assessing crop water requirements and irrigation needs. A large number of methods have been developed for assessing ET 0 from meteorological data. In several places of the world, the existing network of weather stations is insufficient to capture the spatial heterogeneity of this variable The purpose of this work is to investigate whether it is possible to attain reliable estimation of ET 0 only on the basis of the remote sensing-based surface temperature (T s ) data by Blaney-Criddle (B-C) model under a semi arid environment of Iran. This study has assumed that the daytime surface temperature at the cold pixel obtained from the AVHRR/NOAA sensor can be used instead of air temperature in the Blaney-Criddle (BC) equation for ET 0 estimation in irrigated area. For this purpose, 61 NOAA- AVHRR satellite images acquired between June and September in 2004 and 2005 and weather data measured at two weather located in two irrigation regions with sugar cane located in Khuzestan plain in the southwest of Iran were used to calibrate and test the B-C model. The FAO-56 Penman–Monteith model was used as a reference model for assessing the performance of the calibrated BC model. The results show that calibrated B-C model provided close agreement with the reference values, with an average RMSE of 1.0 mm day −1 and a R 2 of 0.91. Copyright Springer Science+Business Media Dordrecht 2014

Keywords: Reference evapotranspiration; Blaney-Criddle model; AVHRR data; Iran (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1007/s11269-014-0670-7

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