Trying to run an experiment in emission mode with Payu

Earth System Earth System Model
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Hello,

I would like to run an experiment with the ACCESS-ESM1.5 in emission mode using Payu.
I cloned the preindustrial+concentration as detailed in Run ACCESS-ESM - ACCESS-Hive Docs
(and was able to run it for 1 year).

I then modified the atmosphere/namelists as follows (not sure that’s correct):

L_CO2_INTERACTIVE=.TRUE.,
L_CO2_EMITS= .TRUE.,
L_CO2_TRACER=.TRUE.,
L_CO2_mass = .true.,
 L_CO2_radiation = .true.,

In the config.yaml atmosphere forcing I added a path to the ancillary file that should provide the emission forcing, however it does not work.
When I try and run, I get the following error:

payu: error: Input directory /g/data/y99/lcm561/accessesm/forcing/CO2_fluxes_flat12.anc not found; aborting.

I tried with different paths (moving the file to different locations), but the issue remains the same.
Does someone have any advice on how to run in emission mode with Payu?

Thanks,

2

Hi @LaurieM

Did you run

payu setup

after adding the new ancillary file path to config.yaml?

It is always a good idea to do this when you change anything in the config.yaml as payu uses the manifests to search paths for storage points it will need to add to the PBS qsub command line when you do payu run, and those manifests are regenerated when you run payu setup.

I suspect that gdata/y99 is not being added to the storage points and so the file can’t be located when the model is run.

If you do run payu setup then you’ll need to either run payu sweep before you payu run, or use payu run -f. The former will remove the work directory that is created by payu setup, and the latter does that automatically.

3

Did that solve your problem @LaurieM?

5

Thanks Aidan.
I had run payu setup, but had run payu sweep after, so that was probably the mistake.
I also had a few additional errors, and had to remove the 2 L_CO2 flags I added.
But I was now able to run 1 yr successfully, and CO2 is varying (so interactive). I am not sure yet if the “emission” part worked successfully.
I’ll restart the run for 10yrs and see what happens.
Thanks again!

6

I don’t think that is a mistake. payu sweep just removes ephemeral work directories. The updates to the manifests should remain, though they are not committed to the git repo without doing that manually, or when you next do payu run.

Good to hear it is running and producing some encouraging outputs.

If you need assistance with your configuration, or want to share it more widely, then I’d encourage you to put it on GitHub.

There are some instructions on how to do this in the training material from last year but @helen is working on some updated and more concise instructions that hopefully will be available soon.

I’ll close this topic, but please do create a new one if you need more assistance with this configuration.

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A post was split to a new topic: ACCESS-ESM1.5 in Emissions mode