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基于MODIS数据的区域蒸散发估算研究 被引量:7

Study on Regional Evaportranspiration Estimation Based on MODIS Date
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摘要 应用遥感方法计算区域蒸散发具有很多常规方法所没有的优势。在基于地表能量平衡原理的SEBAL模型基础上提出了将新一代对地观测数据MODIS应用于反演区域地表蒸散的计算方法,并对新疆焉耆盆地的日蒸散发与月蒸散发情况进行了计算模拟,获取了相关地面特征参数。通过与基于ETM数据的SEBAL模型计算结果进行对比分析,验证了MODIS数据计算结果的合理性,并利用研究区实测水面蒸发值与区域水均衡方法对MODIS计算结果进行进一步的验证,说明了利用MODIS数据反演区域蒸散发的方法是切实可行的。 Application of remote sensing method for the regional evapotranspiration estirnation has many advantages which conventional methods do not have On the basis of the SEBAL model, which is based on the surface energy balance principle, a new calculation method, in which the new generation earth observation data MODIS is applied to the inverse calculation of regional evapotranspiration, is proposed in this paper. Moreover, by using it, the daily evapotranspiration and the monthly evapotranspiration in the Xinjiang Yanqi Basin are simulated and the correlative ground characteristic parameters are gained. The rationality of the calculation result based on the MODIS date is verified through contrast with the result of the SEBAL model based on ETM data Also, by using the measuring data of water surface evaporation in studying area and regional water balance method, the result based on the MODIS data is further verified to validate the feasibility of the method of applying the MODIS data for the inverse calculation of regional evapotranspiration.
出处 《节水灌溉》 北大核心 2008年第1期44-47,共4页 Water Saving Irrigation
关键词 MODIS SEBAL 模型 遥感 区域蒸散发 MODIS SEBAL model remote sensing regional evaportranspiration
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