Opened 6 years ago

Closed 6 years ago

#177 closed enhancement (fixed)

Change default value for SPRED_PREC

Reported by: jgipsl Owned by: jgipsl
Priority: major Milestone:
Component: Anthropogenic processes Version:
Keywords: Cc:

Description

Change default value for SPRED_PRED

Background
The forcing data is given at dt_force time step (6hours for CRU-NCEP). The precipitations are in mm cumulated on the whole forcing time step (mm/dt_force)

In the driver, only in offline mode, the variable spred_prec define the number of time steps in sechiba on which the precipitation should be distributed.

  • If spred_prec = 1, the cumulation of the 6h are distributed in the model during one time step in sechiba.
  • If spred_prec = 12, with dt_force=6h and dt_sechiba_30min, the cumulation of the 6h is uniformly distributed over 12 sechiba time steps.

The default value for spred_prec=1.

To be done:
Change the default value for SPRED_PREC to be depending on dt_force and dt_sechiba according to:

if ( dt_force .ge. 3h) then
    spred_prec = INT(0.5 * (dt_force/dt_sechiba)) ! half of dt_force
    ! spred_prec = 6 for dt_force = 6h
    ! spred_prec = 3 for dt_force = 3h
else
    spred_prec = dt_force/dt_sechiba ! uniform
endif

Change History (1)

comment:1 Changed 6 years ago by jgipsl

  • Resolution set to fixed
  • Status changed from new to closed

Done rev [2639]

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