clm5.0/doc/source/users_guide/running-special-cases/running-with-irrigation.rst
2025-01-12 20:48:10 +08:00

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.. running-with-irrigation:
.. include:: ../substitutions.rst
===================================
Running with irrigation
===================================
In CLM4.0 irrigation isn't an allowed option.
In CLM4.5 irrigation can ONLY be used WITH crop. With CLM5.0 irrigation can be used whether crop is on or not -- **BUT**
if crop is off, your surface datasets **HAVE** to have irrigation defined appropriately. Right now *ALL* surface
datasets without crop enabled have irrigation hard-wired on. In order to create datasets with irrigation off, you'd need
to make changes to ``mksurfdata_map`` in order to have all generic crops to be non-irrigated.
To turn on irrigation in |version| we simply add "-irrig on" to ``CLM_BLDNML_OPTS``.
Example: Irrigation Simulation
------------------------------------------
::
# Note here we do a CLMSP simulation as that is what has been validated
> cd scripts
> ./create_newcase -case IRRIG -res f19_g17_gl4 -compset I1850Clm50BgcCrop
> cd IRRIG
# Append "-irrig on" to CLM_BLDNML_OPTS in env_run.xml (you could also use an editor)
> ./xmlchange CLM_BLDNML_OPTS="-irrig on" -append
> ./case.setup
# Now build and run normally
> ./case.build
> ./case.submit