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This page covers bug and bugfixes found in various UKCA branches or jobs. This page will be updated whenever a new bug/bugfix is found.

If you have any concerns, please contact Luke Abraham. If you think that you have found a bug, please report it to him, or alternatively you can add it to the bugfix talk page (or click on the discussion link above).


Compiler Bugs and Bugfixes

Cray compiler on HECToR XE6

Please also see advice from NCAS-CMS.

To allow the VN7.3_UKCA_CheM branch to compile, please include the following compiler file over-ride:


Code Bugs and Bugfixes

Corrections to VN7.3_UKCA_CheM branch

The latest revision number is 6791.

There have been three bugfixes to this branch, one correcting output units (revision 5887), one correcting conversion factors in any StratChem jobs (revision 6356), and one correcting a bug win wet-deposition (revision 6791).

Scenario script on PUMA

This script is located at /home/ukca/bin/scenario.

This was giving incorrect values for CFC-11, CFC-12, and Methyl Bromide (CH3Br), the numbers being too high. This bug has been corrected as of 2011/10/18, but you should double-check your input scripts.

UMUI Bugs and Bugfixes

UMUI Panel Settings

Lightning Emissions

Some jobs may be having issues with lightning NOx emissions. This will not affect all jobs, only those that take the section 0 prognostic cloud base height and cloud top height, rather than the section 5 diagnostic values (this can be checked in ukca_setd1defs.F90 or in the UKCA STASH hand-edit). If you need the section 0 prognostics, please make sure following is set:

  Model Selection --> 
    Atmosphere -->
      Scientific Parameters and Sections -->
        Section by section choices -->
          Section 5: Convection -->
            Continue (follow on window) -->
              "Apply time decay of convective clouds" = 0 

If this is not the case these two fields will be empty and there will be no lightning NOx produced by UKCA. This bug does not affect the VN7.3_UKCA_CheM branch, which uses section 5 diagnostics.

UMUI Hand-Edits

RADAER update

There is an issue with the following hand-edits on PUMA:


The line


should have been set to


which has now been done. However, if a personal copy of this hand-edit has been taken, it will also need to be corrected. If you have not taken a copy of this hand-edit the correction will be applied the next time your job is processed.

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