نتایج جستجو برای: sebal algorithm

تعداد نتایج: 754122  

Journal: :Water Resources Research 2021

The rapid decline of groundwater resources in South Asia due to excessive irrigation during dry season requires awareness optimal on-field water requirements. Such information is currently provided on farmer cellphones through an operational Irrigation Advisory System (IAS). To minimize the cost sending such advisory texts farmers while maximizing impact IAS sustainability, we integrated Gravit...

Journal: :Water 2022

Remote sensing can provide important and updated information for agricultural water accounting (AWA). In this study, data from the open-access portal (WaPOR) of Food Agricultural Organization was used in AWA to assess levels consumption possible solutions deficiency North Jordan Valley (NJV). Consolidated procedures have been applied complement validate WaPOR products. These included use climat...

2014
Jozsef Szilagyi

Theoretical considerations and empirical evidence indicate a linear relationship between the land surface temperature (Ts) and the corresponding evapotranspiration (ET) rate under spatially constant wind and net energy conditions at a homogeneous vegetated surface. Such a relationship lies at the core of the popular surface energy balance algorithm (SEBAL); the satellite-based energy balance ap...

Journal: :Forests 2023

The study of energy, water, and carbon exchanges between ecosystems the atmosphere is important in understanding role vegetation regional microclimates. However, they are still relatively scarce when it comes to Caatinga vegetation. This aims identify differences dynamics critical environmental variables such as net radiation (Rn), evapotranspiration (ET), fluxes (gross primary production, GPP)...

2008
X. Yang

Understanding and mitigating against the impact of land use change and groundwater extraction on groundwater dependant ecosystems (GDE) requires information on the distribution and environmental water needs of these ecosystems. Conventional field based techniques for determining plant water use and plant stress are very labour intensive and time consuming. In this study, we proposed an alternat...

Journal: :Remote Sensing 2021

Evapotranspiration (ET) estimation is important for understanding energy exchanges and water cycles. Remote sensing (RS) the main method used to obtain ET data over large scales. However, owing surface heterogeneities different model algorithms, estimated from RS products with spatial resolutions can cause significant uncertainties, whose causes need be thoroughly analyzed. In this study, Surfa...

2015
M. H. Hendrickx Brian Borchers

10

2017

Submit Manuscript | http://medcraveonline.com Abbreviations: ET: Evapotranspiration; ETM: Enhanced Thematic Mapper; EVI: Enhanced Vegetation Index; FAO: The Food and Agriculture Organization of the United Nations; LAI: Leaf Area Index; MODIS: Moderate Resolution Imaging Spectroradiometer (it is attached to Terra a sun synchronous satellite); NDVI; Normalized Difference in Vegetation Index; SAVI...

ژورنال: :نشریه حفاظت منابع آب و خاک (علمی - پژوهشی) 2013
الهه سیمایی مهدی همایی علی اکبر نوروزی

برآورد صحیح مقدار تبخیر و تعرق اهمیت زیادی در حفاظت بهینه از منابع آب موجود در مناطق خشک و نیمه­خشک دارد. زیرا، تبخیر و تعرق بخش مهمی از بیلان آبی مناطق خشک و نیمه­خشک است. هدف از این پژوهش، ارزیابی کارآیی مدل sebal برای تخمین تبخیر و تعرق در یک منطقه نیمه خشک بود. این پژوهش در بخشی از حوزه آبخیز زنجان­رود واقع در استان زنجان که کشت غالب آن گندم آبی و دیم است، انجام شد. با استفاده از تصاویر سنج...

Journal: :International Journal of Plant and Soil Science 2022

A study on evapotranspiration for wheat was conducted in the two-year Rabi season crop from November, 2017 to April, 2018 and April 2019 at Gaya District, Bihar. Spatio-temporal information actual (ETa) helps users better understand evaporative depletion establish links between land use, water allocation, use. The Surface Energy Balance Algorithm Land (SEBAL) adopted employing essential adaptat...

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