! user_nl_clm namelist options written by PTCLMmkdata:
! ../PTCLMmkdata --verbose --pftgrid --clmnmlusecase=20thC_transient --ctsm_root $CTSMROOTDIR -s US-Ne3 -d $DIN_LOC_ROOT --debug --sdate 140204 --map_gdate 140204 --mydatadir testing_dir/trans20thgrd_file_creation 
 fsurdat = '$CTSMROOTDIR/tools/PTCLM/test/testing_dir/trans20thgrd_file_creation/1x1pt_US-Ne3/surfdata_1x1pt_US-Ne3140204_simyr1850_140204.nc'
 flanduse_timeseries = $CTSMROOTDIR/tools/PTCLM/test/testing_dir/trans20thgrd_file_creation/1x1pt_US-Ne3/landuse.timeseries_1x1pt_US-Ne3_hist140204_simyr1850-2015_140204.nc
 hist_nhtfrq = 0
 hist_mfilt  = 1200
