# ARCHER2 dump file error

**URL:** <https://cms-helpdesk.ncas.ac.uk/t/archer2-dump-file-error/2006>\
**Category:** Uncategorized\
**Tags:** ARCHER2\
**Created:** [18 February 2026 01:25 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-dump-file-error/2006 "2026-02-18T01:25:50Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![emxin](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@emxin](https://cms-helpdesk.ncas.ac.uk/u/emxin)\
**Post date:** [19 February 2026 15:23 UTC](https://cms-helpdesk.ncas.ac.uk/t/archer2-dump-file-error/2006/5 "2026-02-19T15:23:48Z")

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Hi Grenville,

It seems the original ainitial=‘$ROSE\_DATA/${RUNID}a.ainitial’) is working fine. The new issue is that my suite was trying to find ancillary files for CHI and DMS, but failed (though they worked well before). Those files were locatedat: /work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/CHL/CHL\_clim\_by791\_1979\_2014\_n96.anc

/work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/DMS/DMS\_clim\_by791\_1979\_2014\_n96.anc

However, I could not accessthem now:

Ancillary Files to be opened :

Ancil filename : /work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/CHL/CHL\_clim\_by791\_1979\_2014\_n96.anc

Ancillary File does not exist.

File : /work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/CHL/CHL\_clim\_by791\_1979\_2014\_n96.anc

Ancil filename : /work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/DMS/DMS\_clim\_by791\_1979\_2014\_n96.anc

Ancillary File does not exist.

File : /work/n02/n02/waltonj/ancil/MEDUSA/clims/by791/DMS/DMS\_clim\_by791\_1979\_2014\_n96.anc

I noticed that Graham recently posted a message regarding the updates on ancillary files for nudged jobs, including CHI and DMS: [https://cms-helpdesk.ncas.ac.uk/t/gotchas-within-converting-to-post-2015-for-nudged-monsoon3-v13-9-ukesm1-1-amip-runs/1975/2](https://cms-helpdesk.ncas.ac.uk/t/gotchas-within-converting-to-post-2015-for-nudged-monsoon3-v13-9-ukesm1-1-amip-runs/1975/2)

Where he mentioned updated ancillary files inclduing CHI and DMS, however, they are on Monsoon, e.g.

3. Ocean chlorophyll: file = CHL\_clim\_by791\_1979\_2014\_n96.anc

Dir = /projects/ukesm/jeremy.walton.mon/ancil/MEDUSA/clims/by791/CHL/

5. Ocean DMS: file = DMS\_clim\_by791\_1979\_2014\_n96.anc

Dir = /projects/ukesm/jeremy.walton.mon/ancil/MEDUSA/clims/by791/DMS/

Could you help copy them to ARCHER2? or let me know how to get them downloaded to ARCHER2.

Thanks.

Best,

Xin

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