CESM 1.2.2 running errors

[yuqiang_zhang@duke_edu]

Hi All,I am trying to run the CESM 1.2.2 with the B_RCP8.5_CN compset. I was planning to run time slices 2045-2055. I am using the "trop_mozart" mechanism. 

I have several error messages: 1) First, I have the error message of "ERROR: chem_surfvals_readnl: Cannot specify both bndtvghg and flbc_file". After checking on the forum from a previous post, https://bb.cgd.ucar.edu/restart-files-mam7-and-rcp45And found that the "bndtvghg" and "flbc_file" in the namelist settings can't coexist. After I removed the "bndtvghg" and "scens_ghg" setting from the namelist, I had the second error message2) " photo_inti: solar_data file needs to contain irradiance spectrum(shr_sys_abort) ERROR: photo_inti: ERROR -- solar irradiance spectrum is missing(shr_sys_abort) WARNING: calling shr_mpi_abort() and stopping"I checked the cesm log file, for the solar radiation, I was reading the "/netscr/yuqiangz/inputdata/atm/cam/solar/SOLAR_TSI_Lean_1610-2140_annual_c100301.nc". I think this file contains the solar irradiance spectrum. Also my test case run was successfully before I specify the "trop_mozart" mechanism and used all the default settings of the "B_RCP8.5_CN" compset. 3) Since the "bndtvghg" and "flbc_file" cann't coexist, and I thought the solar radiation file is fine. I was trying to remove the "flbc_file" configuration from the namelist. However, after I removed the "flbc_file", I can't build the model. It gave me the error message that "CAM build-namelist - ERROR: No default value found for flbc_file". It looks like the "flbc_file" was a requirement for my case. I wonder is that because I manually set the "trop_mozart" chemical mechanism in the "env_build.nml"?  Really not sure how to solve this issue.  Thanks for any suggestions and comments!Regards,Yuqiang

 

[yuqiang_zhang@duke_edu]

Is it OK if I manually change the source code and let the model read both the "bndtvghg" and "flbc_file" file? Will that screw up the model's initiation?
Thanks!

 

[alisonfangdada@sina_com]

Hi, I came up with the same question. I'm running F20C5TR with env_build.xml setting './xmlchange -file env_build.xml -id CAM_CONFIG_OPTS -val '-phys cam5 -chem trop_mozart_mam3''. And I got the run error message '(shr_sys_abort) ERROR: chem_surfvals_readnl: Cannot specify both bndtvghg and flbc_file'. How can I solve this problem? Any advice would be appreciated.

 

[hannay]

To remove bndtvghg from your namelist, try putting this in the user_nl_cam file in your case directory:
bndtvghg = ''

 

[luoyangcheng96@pku_edu_cn]

To remove bndtvghg from your namelist, try putting this in the user_nl_cam file in your case directory:
bndtvghg = ''

Hello Dr. Hannay,

If a namelist variable is a string, I can set namelist_variable = '' to remove this namelist. What if a namelist variable is an integer? For example, if I set flbc_type = 'FIXED', I have to unset flbc_cycle_yr. What should I do to unset this variable? Thanks!

Yangcheng