首页> 外文会议>IEEE International Geoscience and Remote Sensing Symposium >COMPARISON OF MODIS DERIVED EVAPOTRANSPIRATION WITH LASMEASUREMENTS AT CHANGWU AGRO-ECOLOGICAL EXPERIMENTAL STATION
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COMPARISON OF MODIS DERIVED EVAPOTRANSPIRATION WITH LASMEASUREMENTS AT CHANGWU AGRO-ECOLOGICAL EXPERIMENTAL STATION

机译:昌乌农业生态实验站对LasmeSutement的Modis衍生蒸散的比较

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Significance of Evapotranspiration (ET) has been realized in disciplines of hydrology, meteorology and agriculture from a number of studies. A parameterization based on the spatially contextual information of surface temperature-vegetation index, namely T_s VI triangle method, is applied to estimate regional ET from remotely sensed data acquired at the Changwu agro-ecological experiment station. Surface net radiation (Re) is estimated also from MODIS/Terra products. Ratio of soil heat flux (G) to R_n is determined using a linear combination of G/R_n at bare soil and fully vegetated surface. Reasonably good agreement between estimated and measured sensible heart flux from Large Aperture Scintillometer is observed with RMSD about 48 W/m~2.
机译:从许多研究中,在水文,气象学和农业学科中实现了蒸散(ET)的重要性。基于表面温度 - 植被指数的空间上下窗信息的参数化,即T_S VI三角法,应用于在长矛农业生态实验站获取的远程感测数据中估计区域等。 Surface Net Radiation(RE)也估计了MODIS / TERTA产品。使用裸土壤和完全植被表面的线性组合测定土壤热通量(g)至r_n的比率。使用RMSD约48W / m〜2,观察到估计和测量的明智的心脏通量之间的合理良好的一致性。

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