[GRASS-user] in need of Help

[hindo kush]

Respected Friends,

Could you please guide me how to find this layer?


*transmissivity_singleway*=*name* *[required]*Name of the single-way
atmospheric transmissivitymap [-]


*temperaturedifference2m*=*name* *[required]*Name of the difference map of
temperature from surface skin to about 2 m height [K]
i have Landsat 8 and meteorological data from the station(temp max, min).
Mr Yann Chemin explained for me but i did not understand.

it will be so helpful if any one can explain how to get these layers to be
able to calculate the ET in GRASS...


Regards
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