UKCA Release Jobs/GA7p1 UKCA UM108


UM10.8 GA7.1 + UKCA Strattrop (N96L85) TS2000, UKCA-RCP6+WMO2011


Met Office (XCE/F/S): u-ao763

Note: Suite u-ao513 is the Nudged version of this suite, set-up for MONSooN but can run at the Met Office by simply changing the host HPC system value.

Base/ inherited configuration

UM10.6.1 GA7.1 UKCA Strat+Trop+GLOMAP TS2000 suite u-an114 settings applied to UM10.8 GA7 standard suite:u-ao114 .

UKCA evaluation suite output compared against slighlty different GHG/Trgas settings can be seen here

Deviations from base (ao114+an114)

  • Values for Trace Gases required by UKCA are those specified by the CCMI project for REF-C1/C2 as done for UKCA_Release_Job (but for 2000/07/01). This uses scenario option for run_ukca, see actual values used under namelist changes below.
  • Radiation GHG concentrations are fixed for Y2000 as specified for the GC3.1 suite.
  • Scaling factor of 1.7 applied to Ocean DMS concentratations (seadms_ems_scaling=1.7) as a proxy for Primary Marine organic aerosol emissions, which is not used in u-an114.


Note: Branches accompanied by a metadata change will be combined into a Config branch, a working copy used as the suite's meta= setting and for the runtime STASHmaster.

Branch name Description Metadata
In base job
Additional Branches at UM10.8
branches/dev/mohitdalvi/vn10.8_cos_mmr_value Sets the initial value of Carbonyl Sulphide (COS) to
1.0e-09 kg/kg for RCP and WMO scenarios.
This matches the value being set via Rose in other GA7x+Strat+Trop configurations


The suite will initialise from a dump produced at the end of a 20-year spin-up run of the GA7.1+Strattrop AMIP run mi-aj670 - /data/d05/hadzm/dumps/aj670a.da20080901_00


As described in here

Settings (incl. namelist settings)

Y2000 Trace Gas Concentrations

  • These have been specified as per CCMI Ref-C1/2 experiment, using a combination of RCP and WMO, same as used in the UM8.4 UKCA Release job.
  • The actual values are derived for 2000/07/01 using the Scenario program on PUMA:
 ~ukca/bin/scenario 2000/07/01 USER <<< "/home/ukca/tools/scenario/dos2unix/RCP6_MIDYR_CONC_WMO2011_CCMI.DAT"
  • The resultant file, supplied to the model is placed at /data/d05/hadzm/ancil/trgas/RCP6_WMO2011_Y2000_CONC.DAT (/projects/ukca-admin/inputs/ancil/trgas/RCP6_WMO2011_Y2000_CONC.DAT on Monsoon).

RUN_Radiation GHG values

  • Panel: Sec 01 02 Radiation => Gas MMRs => Varying Gas MMRs: Set l_climcfg=False and then specify these values in the Gas MMRs' panel:
Item Value Remarks
c113mmr 0.0
c114mmr 0.0
c11mmr 0.0
c12mmr 4.169E-09
ch4mmr 9.697e-07
co2_mmr 5.60232E-04
hcfc22mmr 0.0
hfc125mmr 0.0
hfc134ammr 2.851E-10
n2ommr 4.800E-07
o2mmr 0.2314

RUN_UKCA settings

Item Value Remarks
biom_aer_ems_scaling 2.0
chem_timestep 3600
dir_strat_aer '$UMDIR/vn$VN/ctldata/UKCA/strat'
fastjx_mode 1
fastjx_numwl 18
fastjx_prescutoff 20.0
file_strat_aer 'Sulfate_SAD_SPARC_Background.asc'
i_mode_nzts 15
i_mode_setup 2 Sulp,ssalt,BC and OC in 5 modes, No Dust
i_ukca_chem 51
i_ukca_conserve_method 2
i_ukca_dms_flux 1
i_ukca_hiorder_scheme 0
i_ukca_photol 3
i_ukca_scenario 2
jvspec_dir '$UMDIR/vn$VN/ctldata/UKCA/fastj'
jvscat_file 'FJX_scat.dat'
jvspec_file 'FJX_spec_Nov11.dat'
l_bcoc_bf .true.
l_bcoc_bm .true.
l_bcoc_ff .true.
l_mode_bhn_on .true.
l_mode_bln_on .false.
l_ukca .true.
l_ukca_ageair .true.
l_ukca_aie1 .true.
l_ukca_aie2 .true.
l_ukca_arg_act .true.
l_ukca_asad_plev .false.
l_ukca_chem_aero .true.
l_ukca_chem_plev .false.
l_ukca_dust .false. deactivated as i_mode_setup =2
l_ukca_h2o_feedback .false.
l_ukca_het_psc .true.
l_ukca_ibvoc .false.
l_ukca_intdd .true.
l_ukca_mode .true.
l_ukca_new_emiss .true.
l_ukca_prescribech4 .false.
l_ukca_primbcoc .true.
l_ukca_primss .true.
l_ukca_primsu .true.
l_ukca_qch4inter .false.
l_ukca_radaer .true.
l_ukca_radaer_sustrat .true.
l_ukca_radch4 .true.
l_ukca_radf11 .false.
l_ukca_radf113 .false.
l_ukca_radf12 .false.
l_ukca_radf22 .false.
l_ukca_radn2o .true.
l_ukca_rado3 .true.
l_ukca_sa_clim .true.
l_ukca_scale_biom_aer_ems .true.
l_ukca_scale_soa_yield .true.
l_ukca_scale_seadms_ems .true. in app/um/opt/rose-app-ga7p1.conf
seadms_ems_scaling 1.7 in app/um/opt/rose-app-ga7p1.conf
l_ukca_set_trace_gases .true.
l_ukca_sfix .false.
l_ukca_src_in_conservation .true.
l_ukca_trophet .false.
l_ukca_use_background_aerosol .true.
lightnox_scale_fac 0.5
mode_activation_dryr 37.5
mode_aitsol_cvscav 0.5
mode_incld_so2_rfrac 0.25
mode_parfrac 2.5
soa_yield_scaling 2.0
ukca_em_dir Most paths inherited from ancil_version file
ukca_em_files See Emissions above. Top-level path for files not in common
location is set as ANCIL_OTH in site/<site>.rc
ukca_ccl4mmr ignored
ukca_cfc115mmr ignored
ukca_ch2br2mmr ignored
ukca_cosmmr ignored
ukca_h1202mmr ignored
ukca_h1211mmr ignored
ukca_h1301mmr ignored
ukca_h2402mmr ignored
ukca_h2mmr 3.4528E-08
ukca_hcfc141bmmr ignored
ukca_hcfc142bmmr ignored
ukca_mebrmmr ignored
ukca_meccl3mmr ignored
ukca_meclmmr ignored
ukca_n2mmr 7.5468E-01
ukca_rcpdir '/data/d05/hadzm/ancil/trgas'
ukca_rcpfile 'RCP6_WMO2011_Y2000_CONC.DAT'
ukcaaclw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_ac_lw' in app/um/opt/rose-app-ga7p1.conf
ukcaacsw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_ac_sw'
ukcaanlw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_an_lw'
ukcaansw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_an_sw'
ukcacrlw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_cr_lw'
ukcacrsw '$UMDIR/vn$VN/ctldata/UKCA/radaer/ga7_1/nml_cr_sw'
ukcaprec '$UMDIR/vn$VN/ctldata/spectral/ga7_1/RADAER_pcalc.ukca'

STASH requests

Diagnostics Requested in u-an114 can be seen [here]. Note this suite has additional UKCA fields requested, over the standard GA7 ones.


UKCA evaluation suite output compared to u-an114 can be seen [here]
Output from the Met Office standard evaluation (Validation notes) package can be seen [here] (Internal link).