CESM1.2 simulation problem with ozone forcing

[yongjia_song@gmail_com]

Dear All, I did CESM1.2 simulation with the compset of F2000_MOZMAM_CN by the time-variation ozone forcing in period of 1980-2005. My user_nl_cam for this experiment is listed in following:&camexp fincl1  = 'cb_O3_c','m_O3_c','O3' prescribed_ozone_datapath      = '/glade/p/cesm/cseg/inputdata/atm/cam/ozone' prescribed_ozone_file          = 'ozone_1.9x2.5_L30_1850-2005_c130313.nc' prescribed_ozone_type          = 'SERIAL' prescribed_ozone_name          = 'O3'/However, I found the simulation result of variables 'cb_O3_c','m_O3_c','O3' are same as the CESM1.2 with climatological ozone forcing, which user_nl_cam is list in following:&camexp fincl1  = 'cb_O3_c','m_O3_c','O3' prescribed_ozone_datapath      = '/glade/p/cesm/cseg/inputdata/atm/cam/ozone' prescribed_ozone_cycle_yr      = 2000 prescribed_ozone_file          = 'ozone_1.9x2.5_L26_2000clim_c091112.nc' prescribed_ozone_name          = 'O3' prescribed_ozone_type          = 'CYCLICAL'/Can anyone point me the possible reason that the simulation by time-variation ozone forcing acctually didn't use all period ozone forcing data?I did other simulations by setting cesm1.2 compsets as F_AMIP_CN, the results seem fine. I got the difference ozone output from time-variation ozone forcing simulation and climatological ozone forcing simulation.Thanks.YJ

 

[tilmes]

Hi YJ,the compset that you have chosen runs with interactive chemistry, and is setup to run the year 2000. If you want to run with prescribed ozone you probably want to start with a compset without chemistry. Simone

 

[yongjia_song@gmail_com]

Thanks Simone, is it possible to run CESM with interactive chemistry by forcing prescribed ozone for serveral years?