Assessment actual evapotranspiration with R program
نویسندگان
چکیده
منابع مشابه
Estimating Riparian and Agricultural Actual Evapotranspiration by Reference Evapotranspiration and MODIS Enhanced Vegetation Index
Dryland river basins frequently support both irrigated agriculture and riparian vegetation and remote sensing methods are needed to monitor water use by both crops and natural vegetation in irrigation districts. We developed an algorithm for estimating actual evapotranspiration (ETa) based on the Enhanced Vegetation Index (EVI) from the Moderate Resolution Imaging Spectrometer (MODIS) sensor on...
متن کاملEstimation of Actual Evapotranspiration using Remote Sensing data
Estimation of actual evapotranspiration (AET) and its spatial distribution are important to understanding of catchment hydrology. The AET is driven by net energy available to evaporate water from soil and vegetation surfaces, and to transpirate water from vegetation. However, estimating AET is difficult as the evapotranspiration process involves complex physical and biological processes. It is ...
متن کاملVariability in riparian zone potential and actual evapotranspiration
Micrometeorological and hydrological measurements were made over one growing season using automatic weather stations and weighing lysimeters at several locations within a multiple land-use agricultural catchment in Southern Ontario. This paper compares modelled potential evapotranspiration (PET) and measured actual evapotranspi-5 ration (AET) values obtained from the soil weighing lysimeters, a...
متن کاملActual Process: A Research Program
Most process research relies heavily on the use of terms and concepts whose validity depends on a variety of assumptions to be met. As it is difficult to guarantee that they are met, such work continually runs the risk of being invalid. We propose a different and complementary approach to understanding process: Perform all description bottom-up and based on hard data alone. We call the approach...
متن کاملModeling actual evapotranspiration with routinemeteorological variables in the data-scarceregion of the Tibetan Plateau: Comparisonsand implications
Quantitative estimation of actual evapotranspiration (ETa) by in situ measurements and mathematical modeling is a fundamental task for physical understanding of ETa as well as the feedback mechanisms between land and the ambient atmosphere. However, the ETa information in the Tibetan Plateau (TP) has been greatly impeded by the extremely sparse ground observation network in the region. Approach...
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ژورنال
عنوان ژورنال: E3S Web of Conferences
سال: 2020
ISSN: 2267-1242
DOI: 10.1051/e3sconf/202018706001