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:
/home/ukca/comp_overides/hector_cce_7.3_asad_chem_diags
Code Bugs and Bugfixes
Corrections to VN7.3_UKCA_CheM branch
The latest revision number is 9278.
There have been four bugfixes to this branch, one correcting output units (revision 5887), one correcting conversion factors in any StratChem jobs (revision 6356), one correcting a bug win wet-deposition (revision 6791), and one fixing the ukca_transform_halogen routine (revision 9278) which affected the Total N tracer in Stratospheric Chemistry jobs. This also requires an update to the initialisation of this Total N tracer (tracer 4, 34004) - see below.
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
Total N tracer initial condition
The initial condition for the Total N tracer needs to be updated along with the fcm revision of the VN7.3_UKCA_CheM branch listed above. This file is in the same directory as the previous initial condition file, and is called CheS_init_NOy.anc. The UKCA UMUI jobs have been updated accordingly.
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:
/home/ukca/hand_edits/VN7.3/std/radaer_indir1_on_l38.ed /home/ukca/hand_edits/VN7.3/std/radaer_indir1_on_l38_HECToR.ed /home/ukca/hand_edits/VN7.3/std/ukca_mode_cdnc_l38.ed
The line
&USE NAME="UPUKCA", LOCN=6
should have been set to
&USE NAME="UPUKCA", LOCN=1
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.
