نتایج جستجو برای: hourly evapotranspiration

تعداد نتایج: 16051  

2017
Peng Zhao Johannes Lüers

Estimation of evapotranspiration plays an important role in understanding the water cycle on the earth, especially the water budget in agricultural ecosystems. The parameterization approach of the Penman-Monteith-Katerji-Perrier (PM-KP) model, accounting for the influence of meteorological variables and aerodynamic resistance on surface resistance, was proposed in the literature, but it has not...

ژورنال: علوم آب و خاک 2017

Conventional methods for estimating evapotranspiration are based on point measurement and suitable for local areas, therefore, cannot be generalized for larger areas or watershed basins. The remote sensing technology is capable of using satellite images and meteorological data to estimate evapotranspiration in a wider area. In this study, estimates of evapotranspiration (ET) by SEBAL and METRIC...

2005
Thomas L. Powell Gregory Starr Kenneth L. Clark Timothy A. Martin Henry L. Gholz

Eddy covariance was used to measure energy fluxes from July 2000 – June 2002 above the tree canopy and above the understory in a mature, naturally regenerated slash pine (Pinus elliottii Engelm. var. elliottii) – longleaf pine (Pinus palustris Mill.) flatwoods forest. Understory latent energy (λE) and sensible heat (H) fluxes accounted for 45% and 55% of whole-ecosystem fluxes, respectively, wi...

Journal: :Scientific Data 2021

Abstract Challenges exist for assessing the impacts of climate and change on hydrological cycle local regional scales, in turn water resources, food, energy, natural hazards. Potential evapotranspiration (PET) represents atmospheric demand water, which is required at high spatial temporal resolutions to compute actual thus close balance near land surface many such applications, but there are cu...

2007
Martha C. Anderson John M. Norman John R. Mecikalski Jason A. Otkin William P. Kustas

[1] Due to the influence of evaporation on land-surface temperature, thermal remote sensing data provide valuable information regarding the surface moisture status. The Atmosphere-Land Exchange Inverse (ALEXI) model uses the morning surface temperature rise, as measured from a geostationary satellite platform, to deduce surface energy and water fluxes at 5–10 km resolution over the continental ...

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