Hi Mohit, Ross,
cc: Saffie et al.
Just to send an update on this, I figured out how to “get around” this issue with the ANCIL error.
As per Mohit’s and Ross’s emails, the issue was the use of 360-day versions of timeseries
UM surface-ancil files.
What I realised, after some testing etc., is this only becomes a problem when using multi-year ancils.
With surface UM ancils for a single-year (either for a specific year or climatological across multiple years)
there seems to be no problem at all.
I had a look around on the shared CMIP6 folders, and from some files being used from Jeremy Walton’s
UKESM file-space.
And then I simply updated the 8 surface ancils, to no-longer use any timeseries surface-ancils,
but instead use single-year or multi-year-climatology ancils).
The job still uses timeseries SSTs and sea-ice, but these are Gregorian calendar ancils, so no problem.
And similarly, the UKCA emissions ancils etc., are also all Gregorian calendar versions.
So although I couldn’t find any Gregorian calendar land-surface ancils, these ancils here work fine
(see file-paths below for the 8 land-surface ancils).
I’m posting this also on the NCAS-CMS website, as it likely could be quite helpful for people running UKESM1.1
Since several of these files are in Jeremy Walton’s file-space, I’ve cc’d him in also for info.
(thanks Jeremy!)
When using the ancil files below, the v13.9 UKESM1.1 ERA5-nudged job then ran 2 years + 3 months OK.
(previously was crashing in month 6, tried also with Masaru’s nudged run and got the same problem).
Anyway, it seems to be this issue with the timeseries ancils where the 360-day becomes a problem
(seems OK when these single-year or climatological-one-year files are used).
Best regards,
Cheers
Graham
1. Land-cover: file = u-be690_m01s00i216_2015-2100_monthly_timeseries_land_cover_frac.anc
Dir = /common/share/monsoon_ancils_cmip6/model_derived/ukesm1.0_ssp370_r2i1p1f2_u-be690/
n96e/timeseries_2015-2100/vegetation/
(*** This 1st one I actually didn’t have to change this — this monthly timeseries land-cover-frac seems to work OK *** )
2. Crop_fraction: file =
multiple_input4MIPs_landState_CMIP_UofMD-landState-2-1-h_gn_0850-2015_states.nc_1850_crop_frac_noRange_n96e_orca1_ancil
Dir = /common/share/monsoon_ancils_cmip6/n96e/timeslice_1850/LandUse/v3/
3. Ocean chlorophyll: file = CHL_clim_by791_1979_2014_n96.anc
Dir = /projects/ukesm/jeremy.walton.mon/ancil/MEDUSA/clims/by791/CHL/
4. Nitrogen depn: file = ndep_input4MIPs_surfaceFluxes_CMIP_NCAR-CCMI-2-0_gn_185001-185012-clim.n96e.anc
Dir = /common/share/monsoon_ancils_cmip6/n96e/timeslice_1850/NitrogenDeposition/v1/
5. Ocean DMS: file = DMS_clim_by791_1979_2014_n96.anc
Dir = /projects/ukesm/jeremy.walton.mon/ancil/MEDUSA/clims/by791/DMS/
6. Canopy-height: file = u-by791_m01s00i218_1979-2014_time_mean_canopy_height.anc
Dir = /projects/ukesm/jeremy.walton.mon/ancil/u-by791/
7. Leaf-Area Index: file = u-by791_m01s00i217_1979-2014_monthly_climatology_LAI.anc
Dir = /projects/ukesm/jeremy.walton.mon/ancil/u-by791/
8. Pasture-frac: file =
multiple_input4MIPs_landState_CMIP_UofMD-landState-2-1-h_gn_0850-2015_states.nc_1850_pasture_frac_noRange_n96e_orca1_ancil
Dir = /common/share/monsoon_ancils_cmip6/n96e/timeslice_1850/LandUse/v3/
------------------------------
[gwmann@xfer-vm-01 ~]$ ssh -Y mass-cli
Access to this system is monitored and restricted to
authorised users. If you do not have authorisation
to use this system, you should not proceed beyond
this point and should disconnect immediately.
Unauthorised use could lead to prosecution.
(See also - http://www.stfc.ac.uk/aup)
Last login: Tue Jan 20 09:42:51 2026 from xfer-vm-01.jasmin.ac.uk
-bash: mosrs-setup-gpg-agent: No such file or directory
-bash: mosrs-setup-gpg-agent: No such file or directory
[gwmann@mass-cli2 ~]$ moo ls -l moose:crum/u-dw274
C mohit.dalvi 0.08 GBP 8572932096 2026-01-25 03:29:36 GMT moose:/crum/u-dw274/ada.file
C mohit.dalvi 0.10 GBP 11220672824 2026-01-25 11:39:55 GMT moose:/crum/u-dw274/apa.pp
C mohit.dalvi 0.02 GBP 2128796352 2026-01-25 11:06:03 GMT moose:/crum/u-dw274/apb.pp
C mohit.dalvi 0.10 GBP 10520465296 2026-01-25 11:06:25 GMT moose:/crum/u-dw274/apc.pp
C mohit.dalvi 0.11 GBP 11849186384 2026-01-25 11:07:59 GMT moose:/crum/u-dw274/apd.pp
C mohit.dalvi 0.10 GBP 10972455728 2026-01-25 10:20:14 GMT moose:/crum/u-dw274/ape.pp
C mohit.dalvi 0.00 GBP 542118888 2026-01-25 11:08:49 GMT moose:/crum/u-dw274/apf.pp
C mohit.dalvi 0.02 GBP 1970467528 2026-01-25 11:08:58 GMT moose:/crum/u-dw274/apg.pp
C mohit.dalvi 0.01 GBP 599555824 2026-01-25 11:09:10 GMT moose:/crum/u-dw274/apj.pp
C mohit.dalvi 0.07 GBP 8235037656 2026-01-25 11:18:40 GMT moose:/crum/u-dw274/apk.pp
C mohit.dalvi 0.60 GBP 65895365144 2026-01-25 10:43:54 GMT moose:/crum/u-dw274/apm.pp
C mohit.dalvi 0.16 GBP 17742969464 2026-01-25 10:55:26 GMT moose:/crum/u-dw274/aps.pp
C mohit.dalvi 0.02 GBP 2533674368 2026-01-25 10:59:16 GMT moose:/crum/u-dw274/apy.pp
[gwmann@mass-cli2 ~]$ moo ls -l moose:crum/u-dw274/apm.pp
F mohit.dalvi 0.02 GBP 2530973952 2026-01-24 21:32:36 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017apr.pp
F mohit.dalvi 0.02 GBP 2540647872 2026-01-24 23:54:18 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017aug.pp
F mohit.dalvi 0.02 GBP 2540774912 2026-01-25 05:22:48 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017dec.pp
F mohit.dalvi 0.02 GBP 2512521696 2026-01-24 19:18:49 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017feb.pp
F mohit.dalvi 0.02 GBP 2541514768 2026-01-24 19:19:37 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017jan.pp
F mohit.dalvi 0.02 GBP 2540336936 2026-01-24 23:56:36 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017jul.pp
F mohit.dalvi 0.02 GBP 2531120648 2026-01-24 23:58:22 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017jun.pp
F mohit.dalvi 0.02 GBP 2540583656 2026-01-24 21:36:03 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017mar.pp
F mohit.dalvi 0.02 GBP 2540137088 2026-01-24 21:37:46 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017may.pp
F mohit.dalvi 0.02 GBP 2531289872 2026-01-25 02:44:26 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017nov.pp
F mohit.dalvi 0.02 GBP 2540926896 2026-01-25 02:48:38 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017oct.pp
F mohit.dalvi 0.02 GBP 2531365904 2026-01-25 02:49:13 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2017sep.pp
F mohit.dalvi 0.02 GBP 2530773192 2026-01-25 07:34:29 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018apr.pp
F mohit.dalvi 0.02 GBP 2540392024 2026-01-25 09:45:36 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018aug.pp
F mohit.dalvi 0.02 GBP 2540905952 2026-01-25 12:00:35 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018dec.pp
F mohit.dalvi 0.02 GBP 2512231096 2026-01-25 05:21:07 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018feb.pp
F mohit.dalvi 0.02 GBP 2540510216 2026-01-25 05:22:07 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018jan.pp
F mohit.dalvi 0.02 GBP 2540500456 2026-01-25 09:46:38 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018jul.pp
F mohit.dalvi 0.02 GBP 2531010288 2026-01-25 11:16:35 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018jun.pp
F mohit.dalvi 0.02 GBP 2540245920 2026-01-25 08:28:55 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018mar.pp
F mohit.dalvi 0.02 GBP 2540366104 2026-01-25 08:16:31 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018may.pp
F mohit.dalvi 0.02 GBP 2531651496 2026-01-25 12:21:42 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018nov.pp
F mohit.dalvi 0.02 GBP 2541118176 2026-01-25 12:03:09 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018oct.pp
F mohit.dalvi 0.02 GBP 2531247456 2026-01-25 11:31:29 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2018sep.pp
F mohit.dalvi 0.02 GBP 2512040464 2026-01-25 12:00:48 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2019feb.pp
F mohit.dalvi 0.02 GBP 2540178104 2026-01-25 11:44:58 GMT moose:/crum/u-dw274/apm.pp/dw274a.pm2019jan.pp