wang_3866@osu_edu
New Member
I am testing the ICLM45CN compset in the 1x1 brazil case, and I am confused about how the spinup works. Based on the User's Guide, first I created a startup case that is 600 years, and then did a 'startup' after prestaging the clm rest files: ./xmlchange RUN_TYPE=startup # prestage the data & rpointer files cp $PROJDIR/scratch_cesm1_2_2/sarchive/ICLM45CN.1x1_brazil.spinup.20150815/rest/0601-01-01-00000/ICLM45CN.1x1_brazil.spinup.20150815.clm*.r*.0601-01-01-00000.nc $PROJDIR/scratch_cesm1_2_2/run/ICLM45CN.1x1_brazil.exit_spinup.20150815 cp $PROJDIR/scratch_cesm1_2_2/sarchive/ICLM45CN.1x1_brazil.spinup.20150815/rest/0601-01-01-00000/rpointer.atm $PROJDIR/scratch_cesm1_2_2/run/ICLM45CN.1x1_brazil.exit_spinup.20150815 cp $PROJDIR/scratch_cesm1_2_2/sarchive/ICLM45CN.1x1_brazil.spinup.20150815/rest/0601-01-01-00000/rpointer.drv $PROJDIR/scratch_cesm1_2_2/run/ICLM45CN.1x1_brazil.exit_spinup.20150815 But this procedure does not work for me. The runtime cpl.log file says unable to find the restart file listed in rpointer.drv, and the model does not run. So I went agains the User's Guide, by doing a startup run, but copying everying in the spinup rest folder into the exit_spinup run folder: cp $PROJDIR/scratch_cesm1_2_2/sarchive/ICLM45CN.1x1_brazil.spinup.20150815/rest/0601-01-01-00000/* $PROJDIR/scratch_cesm1_2_2/run/ICLM45CN.1x1_brazil.exit_spinup.20150815/ Now the model runs. But somehow the soil carbon variable mismatched between the two outputs.The spinup period ended at ~400 gram Carbon / square meter. The exit-spinup period went up to 7000 gC/ m2. Also, it seems I cannot obtain soil carbon balance after even 300 years of simulation in the exit_spinup, while the User's Guide claimed that things can stabilize in 50 years or so. I am attaching the files here. The spinup x-axis units are years. The exit_spinup x-axis units are months.Could someone shed light on these problems? Thanks a lot.