Evapotranspiration in NOAH-MP

[Ghp1995]

Hello,

Could you please let me know which variable in the restart file of NOAH_MP represent evapotranspiration?

[cenlinhe]

These is no direct variables related to ET in restart file. The variables are diagnostic fluxes, so they are only in the output history file: ECAN + EDIR + ETRAN = total ET
ECAN: canopy water evaporation
EDIR: soil evaporation
ETRAN: transpiration

[Ghp1995]

Thank you so much, this is very helpful.

[cenlinhe]

Just a further clarification: both variables (ECAN and EDIR) are the net water fluxes (i.e., evaporation+sublimation - dew - frost).

[Ghp1995]

Hello @cenlinhe,
I have a question regarding the units of variables.

If my time steps are like this:
FORCING_TIMESTEP = 3600
NOAH_TIMESTEP = 1800
OUTPUT_TIMESTEP = 86400
RESTART_FREQUENCY_HOURS = 24

What will be the units of QIN, QDIS, UDRUNOFF, RUNSUB and RUNSRF in restart file? I have added some of this variables to restart file following the provided tutorial at https://github.com/NCAR/hrldas/blob/master/tutorial/Note3_Output_Additional_Variables.ipynb

[cenlinhe]

1. I do not think QIN, QDIS, RUNSUB, and RUNSRF are the correct variable names used in restart file. They are variables used inside the code not the output variable names inside the restart file.
2. For UDRUNOFF and SFCRUNOFF, the unit is mm (accumulated total since the model start time point).