《Tab.1 Parameter calibration of different periods》

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《遥感Penman-Monteith模型中土壤含水量与土壤蒸发的关系》

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There are many reasons for the uncertainty of parameter calibration results.The first is the optimization algorithm.In this paper，a simulated annealing algorithm is used to calibrate the sensitive parameters of remote sensing P-M.The initial population is set to 50，and the maximum number of iterations is set to 20.The selection of different parameters in the algorithm may have an impact on the results of calibrated parameters.Secondly，the accuracy of the SMAP surface soil moisture data will affect the division of stages.Finally，the selection of the sensitive parameter interval will also affect the results of parameter calibration.Based on the existing research results，the interval of fand gsxis[0.05，1]and[0.002，0.05]，respectively.