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基于TM/ETM+数据,利用地表能量平衡原理,结合改进了温度算法和地表宽波反照率算法的SEBS模型,对巴丹吉林沙漠东南部苏木吉林南湖2000—2013年的湖面蒸发进行了反演。利用安装在湖面的E601型蒸发皿实测数据对反演结果进行验证,通过相关性分析发现,利用阿拉善右旗气象数据结合SEBS模型计算的湖面蒸发值与蒸发皿实测值相关性较好,R2>0.95,两者的均方根误差RMSE为0.313mm,平均绝对百分比误差MAPE为8.17%。给出了折算方程,折算系数为0.621,并算得2000—2013年苏木吉林南湖湖面年平均蒸发量为1 287.544mm。苏木吉林南湖湖面蒸发与气温相关性最好,日照时数次之,与风速的相关性最弱。
Based on the TM / ETM + data, the surface energy balance principle and the SEBS model with improved temperature algorithm and surface albedo albedo algorithm were used to retrieve the lake evaporation from 2000 to 2013 in South Lake, Mujilin, southeastern Badain Jaran Desert . The inversion results were verified by using the measured data of E601 evaporating dish mounted on the lake. Correlation analysis showed that the correlation between the evaporation of the lake surface and the measured value of evapotranspiration was good using the weather data of Alashan Right Banner combined with the SEBS model. R2 > 0.95. The root mean square error (RMSE) of both was 0.313 mm, and the average absolute percentage error MAPE was 8.17%. The conversion equation is given, and the conversion coefficient is 0.621, and the average annual evaporation of Lake Nam Lake in Jiangsu Province from 2000 to 2013 is 1 287.544mm. The correlation between the evaporation and the temperature is the best in the lake and the temperature in the South Lake of Mt.Suji. The sunshine duration is the second, and the correlation with the wind speed is the weakest.