نتایج جستجو برای: SEBAL Algorithm

تعداد نتایج: 754122  

Journal: :Remote Sensing 2014
Xiao-Gang Wang Wen Wang Dui Huang Bin Yong Xi Chen

The Surface Energy Balance Algorithm for Land (SEBAL) is widely used to estimate actual evapotranspiration (ETa). One major limitation of the SEBAL model is the subjectiveness in selecting extreme cold/hot pixels. In the present study, the SEBAL model is modified by determining the extreme cold/hot status, based on the theoretical trapezoidal relationship between land surface temperature (Ts) a...

Journal: :Remote Sensing 2015
Mcebisi Mkhwanazi José L. Chávez Allan A. Andales Kendall C. DeJonge

Because the Surface Energy Balance Algorithm for Land (SEBAL) tends to underestimate ET when there is advection, the model was modified by incorporating an advection component as part of the energy usable for crop evapotranspiration (ET). The modification involved the estimation of advected energy, which required the development of a wind function. In Part I, the modified SEBAL model (SEBAL-A) ...

Journal: :Remote Sensing 2012
Anderson L. Ruhoff Adriano Rolim da Paz Walter Collischonn Luiz Eduardo Oliveira E. Cruz de Aragão Humberto R. Rocha Yadvinder S. Malhi

Evapotranspiration (ET) plays an important role in global climate dynamics and in primary production of terrestrial ecosystems; it represents the mass and energy transfer from the land to atmosphere. Limitations to measuring ET at large scales using ground-based methods have motivated the development of satellite remote sensing techniques. The purpose of this work is to evaluate the accuracy of...

Journal: :Remote Sensing 2015
Mcebisi Mkhwanazi José L. Chávez Allan A. Andales

The Surface Energy Balance Algorithm for Land (SEBAL) is one of the remote sensing (RS) models that are increasingly being used to determine evapotranspiration (ET). SEBAL is a widely used model, mainly due to the fact that it requires minimum weather data, and also no prior knowledge of surface characteristics is needed. However, it has been observed that it underestimates ET under advective c...

2016
Hussein Sabah Jaber

Evapotranspiration is one of the major parameter in the hydrologic cycle. Standard measurements of this parameter is quite complex due to various factors such as variation of precipitation amount, spatial variation by latitude and longitude and changes in environment and specific site conditions. Although of this complexity, various methods were developed to estimate actual and potential Evapot...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2006
M D Ahmad T Biggs H Turral C A Scott

Evapotranspiration (ET) from irrigated land is one of the most useful indicators to explain whether the water is used as "intended". In this study, the Surface Energy Balance Algorithm for Land (SEBAL) was used to compute actual ET from a Landsat7 image of December 29, 2000 for diverse land use in the Krishna Basin in India. SEBAL ETa varies between 0 to 4.7 mm per day over the image and was qu...

Journal: :Mathematical and Computer Modelling 2011
Zhongping Sun Bin Wei Wei Su Wenming Shen Changzuo Wang Daian You Zheng Liu

As a major component of the water budget of a wetland, evaporation has proven difficult to measure evapotranspiration accurately. This paper developed a scheme to assess actual evapotranspiration (ETa) across a range of land uses in Nansi Lake Wetland, China, using a remote sensing technique and the Surface Energy Balance Algorithm for Land (SEBAL) model. The estimation of pixel-scaled ETa was ...

Journal: :جغرافیا (برنامه ریزی منطقه ای) 0
امیر گندمکار استادیار جغرافیا، دانشگاه آزاد اسلامی واحد نجف آباد

study of terrain including vegetation, water resources, land types including soil texture and classification are cases that require data with high precision. accurate and high quality data can lead us to a better, more accurate results.in this context, remote sensing data is a great tool for the detection and identification of patterns. sebal (surface energy balance algorithm) is a relatively n...

Journal: :Current Journal of Applied Science and Technology 2023

Estimation of evapotranspiration is imperative for effective forest, irrigation and water resources management as well to increase yields better crop management. This study aims evaluate the effectiveness Surface Energy Balance Algorithm Land (SEBAL) in estimating actual 15 years wheat 2A distributary Mahanadi canal Command which situated Dhamtari district Chhattisgarh state India. The Landsat ...

2015
Ramesh K. Singh Gabriel B. Senay Jay R. Lund

The development of different energy balance models has allowed users to choose a model based on its suitability in a region. We compared four commonly used models—Mapping EvapoTranspiration at high Resolution with Internalized Calibration (METRIC) model, Surface Energy Balance Algorithm for Land (SEBAL) model, Surface Energy Balance System (SEBS) model, and the Operational Simplified Surface En...

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