co2 cycle and tracer index

[ekici@climate_unibe_ch]

Hi,I want to do a test run with CAM6 using the co2 cycle.I used the compset: FHIST_DEV and turned the co2_flag=.true. in the user_ncl_camThen i get the error:"ERROR:  cnst_add: FATAL: advected tracer index greater than pcnst=          33"Isn't the co2_flag supposed to add 4 new tracers? My future plan is to add even more tracers, so how can i tell the model to increase number of advected tracers? Thanks,
Altug

 

[eaton]

In CAM the number of advected constituents is a compile time option, i.e., you can't change it at run time with a namelist option.  To run the CO2 cycle code the option -co2_cycle must be given to configure.  When you do this the namelist variable co2_flag will be set to true by build-namelist.  It is not necessary to set it in user_nl_cam. 

 

[nicolas cruz]

Hi, I'm using cesm2.2.0 with this configuration, ne30pg3.FHIST.aleph.test100 and have the same problem:
error:"ERROR: cnst_add: FATAL: advected tracer index greater than pcnst= 33"
When I call :
./xmlquery CAM_CPPDEFS
CAM_CPPDEFS: -DPLON=1 -DPLAT=1 -DNUM_COMP_INST_ATM=1 -DNUM_COMP_INST_LND=1 -DNUM_COMP_INST_OCN=1 -DNUM_COMP_INST_ICE=1 -DNUM_COMP_INST_GLC=1 -DNUM_COMP_INST_ROF=1 -DNUM_COMP_INST_WAV=1 -DNUM_COMP_INST_IAC=1 -DNUM_COMP_INST_ESP=1 -DCAM -D_WK_GRAD -DNP=4 -DHAVE_F2003_PTR_BND_REMAP -DFVM_TRACERS -D_MPI -DPLEV=32 -DPCNST=33 -DPCOLS=16 -DPSUBCOLS=1 -DN_RAD_CNST=30 -DPTRM=1 -DPTRN=1 -DPTRK=1 -DSPMD -DMODAL_AERO -DMODAL_AERO_4MODE -DCLUBB_SGS -DCLUBB_CAM -DNO_LAPACK_ISNAN -DCLUBB_REAL_TYPE=dp

How to know how tracers are using CAM 6 and
how do I change it DPCNST=33 for its real value
I appreciate any help

 

[peverley]

H Nicolas,

Are you trying to add the CO2 cycle tracers? If so, try running:

./xmlchange -append CAM_CONFIG_OPTS="-co2_cycle"

And then do a clean rebuild

./case.setup --reset
./case.build --clean-all
./case.build
./case.submit

 

[nicolas cruz]

H Nicolas,

Are you trying to add the CO2 cycle tracers? If so, try running:



And then do a clean rebuild

Thanks Courtney, now model is run.