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Clarity on use of Evapotranspiration data sets

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Hi Everyone,

                      I want to use  evapotranspiration data sets in my MODFLOW setup. I am having actual evapotranspiration (AET) datasets. But, I  am not sure of using  directly these AET datasets  as a input in my model.

 As per my understanding, MODFLOW needs only evapotranspiration through root zones. But, If I use AET, it includes evaporation from soil, water and transpiration from vegetation. I think I should not use this AET. Maybe I am wrong also. If I should not use AET, what evapotranspiration value I should use in my model. I request you to kindly help me in understanding this concept in a better way. It will be a great help. Thanks in advance.

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