Rough notes

2025-02-17: ESM1.5 preindustrial GHG concentrations:

• Original PI-01 script uses /g/data/p66/txz599/data/ancil/CMIP6/trgas_rcp_historical_ESM.dat which has 10 columns.

YEARS          CO2          CH4          N2O       CFC_11       CFC_12      CFC_113      HCFC_22       HFC125      HFC134a
 kg/kg  kg/kg  kg/kg  kg/kg  kg/kg  kg/kg  kg/kg  kg/kg  kg/kg  kg/kg
1850.  4.314801e-04 4.470459e-07 4.143596e-07 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00 0.000000e+00

• Current config uses atmosphere/namelists -> RUN_Radiation with *MMR fields with values that match the 1850 values of trgas_rcp_historical_ESM.dat.
• This matches the RUN_Radiation namelist defined at https://github.com/ACCESS-NRI/UM7/blob/access-esm1.5/umbase_hg3/src/include/common/cruntimc.h
• The corresponding CMIP6 ancil file is cmip6_ancils/data/ancils/any/timeseries_1850-2014/GreenhouseGases/v1/trgas_rcp_historical.dat which has 24 columns and uses different units.

! historical GHG data for CMIP6 
! source: /group_workspaces/jasmin2/tids/CMIP6_ANCIL/data/inputs4MIPs_2017-06-08/UoM/GHGConcentrations/CMIP/UoM-CMIP-1-2-0/yr/ 
 &THISFILE_SPECIFICATIONS 
 THISFILE_DATACOLUMNS    =          24, 
 THISFILE_FIRSTYEAR      =        1850, 
 THISFILE_LASTYEAR       =        2014, 
 THISFILE_ANNUALSTEPS    =           1, 
 THISFILE_FIRSTDATAROW   =          15, 
 THISFILE_UNITS          =  SEE ROW 13, 
 THISFILE_DATTYPE        =  RCPDAT 
/ 
   COLUMN:      1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24
   UNITS:      ppt   ppm   ppb   ppb   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt   ppt
   YEARS      DUMM0   CO2   CH4   N2O   HFC125   HFC134a   CFC_11   CFC_12   DUMM1   CFC_113   CFC_114   CFC_115   CARB_TET   MCF   HCFC_22   HCFC_141B   HCFC_142B   HALON1211   HALON1202   HALON1301   HALON2402   CH3BR   CH3CL   DUMM2
   1850    -0.0000e+00    2.8432e+02    8.0825e+02    2.7302e+02    0.0000e+00    0.0000e+00    0.0000e+00    0.0000e+00    -0.0000e+00    0.0000e+00    0.0000e+00    0.0000e+00    2.5000e-02    0.0000e+00    0.0000e+00    0.0000e+00    0.0000e+00    4.4466e-03    0.0000e+00    0.0000e+00    0.0000e+00    5.3000e+00    4.5700e+02    -0.0000e+00

For ACCESS-CM2 historical, see

ncdump -h /g/data/fs38/publications/CMIP6/CMIP/CSIRO-ARCCSS/ACCESS-CM2/historical/r1i1p1f1/Amon/ci/gn/files/d20191108/ci_Amon_ACCESS-CM2_historical_r1i1p1f1_gn_185001-201412.nc
...
		:notes = "Exp: CM2-historical; Local ID: bj594; Variable: ci ([\'fld_s05i269\'])" ;

In https://code.metoffice.gov.uk/trac/roses-u/browser/b/j/5/9/4/trunk/app/um/rose-app.conf

[namelist:clmchfcg]
clim_fcg_levls_cfc11=167*-32768.0
clim_fcg_levls_cfc113=167*-32768.0
clim_fcg_levls_cfc114=167*-32768.0
clim_fcg_levls_cfc12=62*6.8996e-11,6.9059e-11,6.9141e-11,6.9181e-11,6.9284e-11,
...
clim_fcg_levls_ch4=4.4634e-07,4.4639e-07,4.4644e-07,4.4669e-07,4.4724e-07,
...
clim_fcg_levls_co2=4.3155e-04,4.3174e-04,4.3192e-04,4.3214e-04,4.3235e-04, 
...	
clim_fcg_levls_hcfc22=167*-32768.0
clim_fcg_levls_hfc125=167*-32768.0
clim_fcg_levls_hfc134a=9*6.7456e-11,10*6.7457e-11,7*6.7458e-11,6*6.7459e-11,
...
clim_fcg_levls_n2o=4.1451e-07,4.1461e-07,4.1472e-07,4.1483e-07,4.1496e-07,
...
clim_fcg_levls_so4=167*-32768.0
...

A correponding ticket for UKCMIP6 is https://code.metoffice.gov.uk/trac/ukcmip6/ticket/5