Using the Priestley-Taylor expression for estimating actual evapotranspiration from satellite Landsat ETM + data
نویسندگان
چکیده
منابع مشابه
Satellite-Based Method for Estimating the Spatial Distribution of Crop Evapotranspiration: Sensitivity to the Priestley-Taylor Coefficient
This work discusses an operational method for actual evapotranspiration (ET) retrieval from remote sensing, considering a minimum quantity of ancillary data. The method consists in a graphical approach based on the Priestley-Taylor (PT) equation, where the dry soil and non-limiting water conditions are defined by land surface temperature (LST) and vegetation index (VI) space, both retrieved fro...
متن کاملValidation and Application of the Modified Satellite-Based Priestley-Taylor Algorithm for Mapping Terrestrial Evapotranspiration
Satellite-based vegetation indices (VIs) and Apparent Thermal Inertia (ATI) derived from temperature change provide valuable information for estimating evapotranspiration (LE) and detecting the onset and severity of drought. The modified satellite-based Priestley-Taylor (MS-PT) algorithm that we developed earlier, coupling both VI and ATI, is validated based on observed data from 40 flux towers...
متن کاملProposal of the Regional Complementary Model for Estimating Actual Evapotranspiration Using Remotely Sensed Data
Brutsaert (1979, 1982) suggested a method for the complementary model taking atmospheric stability into account on the basis of the Monin-Obukhov similarity theory. Katul and Parlange (1992a, 1992b) and the authors (1993) independent ly published the papers on the estimation of latent and sensible heat fluxes including the effects of the atmospheric stabil ity. Parlange and Katul (1992c) actual...
متن کاملEvapotranspiration Estimate over an Almond Orchard Using Landsat Satellite Observations
California growers face challenges with water shortages and there is a strong need to use the least amount of water while optimizing yield. Timely information on evapotranspiration (ET), a dominant component of crop consumptive water use, is critical for growers to tailor irrigation management based on in-field spatial variability and in-season variations. We evaluated the performance of a remo...
متن کاملEstimating aboveground biomass using Landsat 7 ETM+ data across a managed landscape in northern Wisconsin, USA
Aboveground biomass (AGB; Mg/ha) is defined in this study as a biomass of growing stock trees greater than 2.5 cm in diameter at breast height (dbh) for stands N5 years and all trees taller than 1.3 m for stands b5 years. Although AGB is an important variable for evaluating ecosystem function and structure across the landscape, such estimates are difficult to generate without high-resolution sa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the International Association of Hydrological Sciences
سال: 2014
ISSN: 2199-899X
DOI: 10.5194/piahs-364-398-2014