Prescribed ozone CAM4 error when continuing run

[auestad]

I'm running a perpetual CAM4 run with the namelist settings:

prescribed_ozone_fixed_ymd = 20000115
prescribed_ozone_type = 'FIXED'

I run the model successfully for 31 days, but when I continue running the model from the 2000-02-01, I get this error:

Opened existing file f.e20.F2000Nuopc.f09_f09_mg17.control.cam.rs.0001-02-01-00000.nc 9

FIND_TIMES: ALL data times are after 31.020833333333332

FIND_TIMES: file: ozone_1.9x2.5_L26_2000clim_c091112.nc

FIND_TIMES: time: 31.020833333333332

and the model crashes. What am I doing wrong where?

Thanks for the help!

 

[peverley]

Looking at the namelist defaults, we're using the following namelist settings for this ozone file:

prescribed_ozone_type = 'CYCLICAL'
prescribed_ozone_cycle_year = 2000

Can you give that a try? (And remove your existing prescribed_ozone_fixed_ymd entry)
Courtney

 

[auestad]

Thanks for your answer!

I first ran the model without modifying the namelist (thus prescribed_ozone_type='CYCLICAL' and prescribed_ozone_cycle_year=2000) and it ran without problems. I did try actively setting

prescribed_ozone_type = 'CYCLICAL'
prescribed_ozone_cycle_year = 2000

but then I oddly enough receive the error message:

ERROR: trcdata_init: Cannot specify data_cycle_yr if data type is not CYCLICAL

Henrik

 

[peverley]

Interesting. Are you setting any other tracers in the namelist? Can you attach your user_nl_cam file?

 

[auestad]

I do. So, for the run where I receive ERROR: trcdata_init: Cannot specify data_cycle_yr if data type is not CYCLICAL I use the attached namelist. When removing line 5:end in user_cam_namelist, it runs fine.