estimation of evapo-transpiration is necessary in cases such as irrigation planning, determining of evaporation of the water bodies, water balance assessment, estimation of runoff and watershed management and ecological and meteorological studies. evapo-transpiration can be determined precisely using field measurements. however, these methods provide evapo-transpiration just for limited areas f...

accurate estimation of crop evapotranspiration (etc) plays an important role in improving the water useefficiency (wue) and water management. due to the presence of different types of coatings plant in large areas, the accurate calculation of the water requirements by conventional methods is elusive or impossible. remote sensing methods are becoming attractive to estimate crop evapotranspiratio...

Objetivo deste trabalho foi estimar a biomassa seca em áreas de pastagens com dados satelitários, bem como campo pastagem no Cerrado goiano. O experimento realizado na Bacia Hidrográfica do Rio Vermelho, porção oeste Goiás, utilização das imagens satélite Landsat 8. A estimativa parâmetro obtida combinando os algoritmos SEBAL (Surface Energy Balance Algorithm for Land), e o modelo CASA (Carnegi...

temperature is considered as the basic element of climate and also the environmental limiting factor in lutdesert. in this research, in order to identify the temperature of lut desert located in east of central iran, using remote sensing data, six series of modis sensor images related to june 24th & december 23rd 2002, and also january 22nd, march 22nd, june 22nd & september 24th 2003 w...

abstract evapotranspiration (et) determination is a key factor for irrigation scheduling, water balance, irrigation system design and management and crop yields simulation. therefore many scientists have tried to estimate evapotranspiration in different spatial and temporal scales. remote sensing is a one of new technique in estimation of et in regional scales. so, in this study it’s tried to e...

Insurance agents often provide crop hail damage estimates based on their personal experience and field samples, which are not always representative of the investigated field’s spatial variability. For these reasons, farmers insurance market ask for a reliable, objective, less labor-intensive method to determine losses. Integrating remote sensing modeling provides unique opportunity estimate dam...

The culture of açaí (Euterpe oleraceae M.), originating from floodplain areas, was planted on dry land in many properties Pará, Brazil, making necessary the use irrigation. To irrigate adequately with less waste, it is that studies aim at increasing efficiency water this sector, and one ways to do so estimate evapotranspiration (ET). objective study actual daily using Surface Energy Balance Alg...

Producing daily actual evapotranspiration (ET a ) maps with high spatial resolution has always been challenge for remote sensing research. This study assessed the feasibility of producing ET (30 m) sugarcane farmlands Amir Kabir Sugarcane Agro-industry (Khuzestan, Iran) using three different scenarios. In first scenario, reflectance bands Landsat 8 were predicted from moderate imaging spectrora...