1: Control case

Exercise: Run a control case

Create a case called i.day5.a using the compset I2000Clm50Sp at f09_g17_gl4 resolution.

Set the run length to 5 days.

Build and run the model. Since this is a control case, we want to build it “out of the box” without any modifications.

Click here for the solution

Create a new case i.day5.a with the command:

cd /glade/u/home/$USER/code/my_cesm_code/cime/scripts
./create_newcase --case ~/cases/i.day5.a --compset I2000Clm50Sp --res f09_g17_gl4 --run-unsupported

Case setup:

cd ~/cases/i.day5.a 
./case.setup

Change the clm namelist using user_nl_clm by adding the following lines:

hist_nhtfrq = -24
hist_mfilt = 6

Check the namelist by running:

./preview_namelists

If needed, change job queue, account number, or wallclock time. For instance:

./xmlchange JOB_QUEUE=tutorial,PROJECT=UESM0013 --force,JOB_WALLCLOCK_TIME=0:15:00

Build and submit:

qcmd -- ./case.build
./case.submit

When the run is completed, look into the archive directory for: i.day5.a.

(1) Check that your archive directory on derecho (The path will be different on other machines):

cd /glade/derecho/scratch/$USER/archive/i.day5.a/lnd/hist

ls 

(2) Look at the output using ncview