SFCEVP

[littleho_song]

Dear help,

What is the quantity of SFCEVP when I choose sf_surface_physics = 2 which is NOAH LSM?

Is it total transpiration (tree + grass + soil ... )? or potential evaptranspiration?

thanks

 

[littleho_song]

if you could show me the code portion, that would be nice. under phys/ folder i guess.

 

[Ming Chen]

SFCEVP is total moisture flux at the surface, equivalent to evapotranspiration.

QFX is calculated in phys/module_sf_noahdrv.F, which is then used to calculate SFCEVP

in phys/module_surface_driver.F

SFCEVP(I,J)= SFCEVP(I,J) + QFX(I,J)*DTBL

in phys/module_sf_noahdrv.F, you can track how QFX is calculated.

It is hard to describe the details and codes here. please read the code and relevant paper to better understand this issue.