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Reference crop evapotranspiration estimate using high-resolution meteorological network's data

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Author(s): C. Lussana | F. Uboldi

Journal: Advances in Science and Research
ISSN 1992-0628

Volume: 3;
Start page: 113;
Date: 2009;
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ABSTRACT
Water management authorities need detailed information about each component of the hydrological balance. This document presents a method to estimate the evapotranspiration rate, initialized in order to obtain the reference crop evapotranspiration rate (ET0). By using an Optimal Interpolation (OI) scheme, the hourly observations of several meteorological variables, measured by a high-resolution local meteorological network, are interpolated over a regular grid. The analysed meteorological fields, containing detailed meteorological information, enter a model for turbulent heat fluxes estimation based on Monin-Obukhov surface layer similarity theory. The obtained ET0 fields are then post-processed and disseminated to the users.
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