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Determination of the actual evapotranspiration by using remote sensing methods

机译：利用遥感方法确定实际蒸散量

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Evapotranspiration is so crucial for determining amount of the irrigation and the effective water management planning. Moreover, it is vital for determining agricultural drought management and determination the actual evapotranspiration in a region is critical for early drought warning systems. The main object of this study was to assess accuracy of the remote sensing method (METRIC) by calibrating with the bowen ratio observations at the same time. The research was carried out in the west of Marmara Region, Turkey. Landsat 5 images was used to determine the metric algorithm. By using this algorithms are found. Landsat 5 images file were used to determine actual evapotranspiration and the image's date was June 11 in 2010. This date was used for calibration with available terrestrial observation by using bowen ratio in that time. Landsat images obtained from the web site, earthexplorer.usgs.gov, and results of bowen ratio taken from micrometeorology station. As a result, energy balance parameters that are net radiation, soil heat flux and latent heat flux were compared both metric algorithm and the bowen ration in the images time. The results are found so close to each other.
机译：蒸发蒸腾对于确定灌溉量和有效的水管理计划至关重要。此外，对于确定农业干旱管理和确定一个地区的实际蒸散量对于早期干旱预警系统至关重要。这项研究的主要目的是通过同时校准鲍恩比观测值来评估遥感方法（METRIC）的准确性。该研究在土耳其马尔马拉地区的西部进行。 Landsat 5图像用于确定度量算法。通过使用此算法，找到了。使用Landsat 5图像文件确定实际的蒸散量，图像的日期为2010年6月11日。该日期用于通过当时的Bowen比率与可用的地面观测进行校准。从网站Earthexplorer.usgs.gov获得的Landsat图像，以及从微气象站获得的鲍恩比结果。结果，比较了图像算法中的度量算法和鲍文比，比较了净辐射，土壤热通量和潜热通量等能量平衡参数。发现结果是如此接近。

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