Ancillary for 1974 (SST and seaice) error: GAS_CALC: no gas data for this year

[Leighton_Regayre]

Hello,

Jobid: xlkjp.

In attempting to sun a simulation starting at 1974,12,1 I have made ancillaries for SST and seaice using existing data for 1978. I've omitted the year in xancil so this should be arbitrary.

I've not altered any other ancillaries and these all seem to be suitable for 1974 onwards. Running the job fails with the error:

GAS_CALC: no gas data for this year

[Leighton_Regayre]

Additional information:

In the UMUI tab
Atmosphere → Scientific parameters and sections → Spec of trace gases

there are gas concentrations from 1978 to 2011.

I did not set these - they are copied from an existing job. The 'help' window suggest setting all values to the same default, which I'm now attempting.

Thanks,

Leighton.

[Leighton_Regayre]

Unfortunately changing the 'Spec of trace gasses' to fixed values didn't work. The GAS_CALC: no gas data for this year error persists.

Any advice on this issue would be most welcome.

[grenville]

Leighton

What was the start date of the model which ran OK ( do you have the UMUI job?)

Grenville

[Leighton_Regayre]

Grenville,

Any of the jobs xlkj.g/j/l/m run fine but they have start dates 2004 and 1982 because of the SST and seaice ancillaries used.

I've tested a 1978 start job on the short queue xlkj.r using AMIP ancillaries sourced from MONSooN:
/projects/um1/ancil/atmos/n96/orca1/sst/amip/1870-2008/v0/
/projects/um1/ancil/atmos/n96/orca1/seaice/amip/1870-2008/v0/

I'm currently testing a 1974 start job using the same ancillaries xlkj.s

Thanks,

Leighton.

[Leighton_Regayre]

The job xlkj.s fails with the same confusing error:

GAS_CALC: no gas data for this year

[grenville]

I've tested a 1978 start job on the short queue xlkj.r using AMIP ancillaries sourced from MONSooN:
/projects/um1/ancil/atmos/n96/orca1/sst/amip/1870-2008/v0/
/projects/um1/ancil/atmos/n96/orca1/seaice/amip/1870-2008/v0/

Did this work?

[Leighton_Regayre]

Grenville,

Yes the xlkj.r job runs fine. Any jobs starting before 1978 cause the error.

[grenville]

Leighton

It you still have CO2 absorption expecting to start in 1978 - check General Physics Constants, including CO2

Grenville

[Leighton_Regayre]

Grenville,

That's fixed the problem. The simulation runs correctly now.

Thank-you,

Leighton.