# Multiple nemo task

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/multiple-nemo-task/2174>\
**Category:** Rose/Cylc and FCM\
**Tags:** ARCHER2\
**Created:** [16 September 2026 07:16 UTC](https://cms-helpdesk.ncas.ac.uk/t/multiple-nemo-task/2174 "2026-09-16T07:16:51Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![dramauh](https://avatars.discourse-cdn.com/v4/letter/d/c5a1d2/32.png) [@dramauh](https://cms-helpdesk.ncas.ac.uk/u/dramauh)\
**Post date:** [16 September 2026 07:16 UTC](https://cms-helpdesk.ncas.ac.uk/t/multiple-nemo-task/2174/1 "2026-09-16T07:16:51Z")

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I want to write a workflow that spawns two parallel nemo\_cice tasks from a specific year (2000). I have written a workflow, but I wonder if there is another way to do it. In this workflow (see graph), nemo\_cice and nemo\_cice\_fw will have different DATAM folders. Therefore, each needs its own postproc task (i.e. postproc and postproc\_fw). I wonder whether nemo\_cice and nemo\_cice\_fw could share a folder; the only difference would then be the file names (e.g. nemo\_blabla\_gridT.nc and nemo\_fw\_blabla\_gridT.nc). I think that can be done. The main issue would be the postproc routine that merges the multiple files. Do you know if postproc is file-name specific, or does it grab everything (grid\_T, grid\_U and grid\_V) in the DATAM folder? Thanks in advance for all your help

Kind regards,

Estanislao

 ![image](https://europe1.discourse-cdn.com/flex013/uploads/cms_support/original/1X/6f1909e82277a800e6d57b0856fe9bf186a4b8d1.jpeg)

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**Author:** ![RosalynHatcher](https://dub1.discourse-cdn.com/flex013/user_avatar/cms-helpdesk.ncas.ac.uk/rosalynhatcher/32/11_2.png) [@RosalynHatcher](https://cms-helpdesk.ncas.ac.uk/u/RosalynHatcher)\
**Post date:** [16 September 2026 10:06 UTC](https://cms-helpdesk.ncas.ac.uk/t/multiple-nemo-task/2174/2 "2026-09-16T10:06:56Z")

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Hi Estanislao,

If I understand you correctly, this should be relatively easy using cylc parametrization, in a similar way to Valeria’s PROMOTE rare-event ensemble simulation suite. Is this for your PROMOTE work?

Cheers,  
Ros

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**Author:** ![dramauh](https://avatars.discourse-cdn.com/v4/letter/d/c5a1d2/32.png) [@dramauh](https://cms-helpdesk.ncas.ac.uk/u/dramauh)\
**Post date:** [16 September 2026 10:13 UTC](https://cms-helpdesk.ncas.ac.uk/t/multiple-nemo-task/2174/3 "2026-09-16T10:13:29Z")

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Hi Ros,

Yes, I think it is very similar. I only need to create a secondary nemo simulation from 2000 with a freshwater perturbation. I think I can do it as shown in the picture, but I would like a second opinion from someone more experienced.

Best regards,

Estanislao