Minutes of the code management group meeting 2017-07-14

Teleconference Details

Friday 14th July 2017, 10am - 12noon

• UK Freefone: 0800 9171956
• Participant passcode: 51615813 then #

Present

Met Office:

Cambridge:

Leeds:

Reading:

Apologies: Nick Savage

Minutes

Actions from the Last Meeting (LA)

Minutes of the code management group meeting 2016-09-23

1. (ongoing) GM to check 8.4 versus 7.3 (and possibly vn8.4 vs 10.x) GLOMAP-mode code and report any missing bug fixes on the bugfix page.
2. (ongoing) FOC to incorporate Bug #35 and others into dry deposition work
3. (ongoing) LA to migrate PUMA UM tickets to MOSRS
4. (ongoing) UM #368 (RAFEPS value). Error not encountered at UM10.x but LA to consult Oliver Wild regarding background and implications.
5. (ongoing) LA to check doc for NVOC factor and open ticket to remove it from code
6. (ongoing) CJ to lodge STASHmaster changes to diagnostics that should make use of UKCA time availability codes
7. (ongoing) CJ,FOC,AH,AS,LA and John H to decide best way forward for implementing GLOMAP-climatology code and documentation.
8. (ongoing) JM,BJ,NB to discuss incorporation of Nicolas' RADAER description into UKCA (or separate UMDP). JM to take lead.
9. (ongoing) FOC to open ticket + Bugfixes Table entry related to 'Unable to calculate tropopause' warnings
10. (updated) MD to setup Strat+Trop suite as soon as GA7.1 is frozen and also add to Rose-stem. MD set-up/replace current Rose stem job with GA7.1 jobs.
11. (ongoing) CJ to involve NS in discussions with Dynamics and UM-sys teams regarding movement of UKCA call, for effective implementation of water vapour feedback.
12. (ongoing) FOC to recommend at next Exec meeting a policy of allowing only CMG to (certify and) distribute any UKCA configurations for science purpose.
13. (new) MD to chase CMS about MASS archiving
14. (new) NS to collate all code that could be removed and put on Wiki
15. (new) LA to do doodle poll for end of Nov/ start of Dec

Standing actions

1. (ongoing - standing item) CMG to monitor list of bugs and circulate between group for owners.
2. (ongoing - standing item) At CMG future meetings there should be included an appendix listing the open bugs. If a ticket is included it is not an open bug (as the owner of ticket is person doing lodging).
3. (ongoing - standing item) JM to continue to link/send powerpoint results (re: GA7.0/GA7.1), as new configurations released and link/put files on UKCA wiki.
4. (ongoing - standing item) ALL with access to keep monitoring ukca_bugs email list.
5. (ongoing - standing item) ALL to think about if code changes will change KGO and let systems team know in good time. This should be a standard part of our working practice.
6. (ongoing - standing item) ALL to review and remove obsolete code

Bugs/Bugfixes (LA)

Open Bugs

#	Description	Ticket	Owner	Status/ Updates	Comments from previous meeting	Comments from this meeting
31	FP exceptions in asad_sparse_vars or asad_spimjmp	#368 (MOSRS)	Nick Savage		leave open. vn10.x seems to be better
35	Error in labelling: Surface resistance <--> stomatal resistance ?	MOSRS #1409	Fiona O'Connor		open - folded into DD. FOC to update
50	ukca_solve_coagnucl failures	#319 (MOSRS)	Mohit Dalvi/Graham Mann?	Not encountered any more ?	dissapeared at vn10.x
57	Incorrect logic for DMS anciliaries required	#756 (MOSRS)	Nick Savage		trivial. Might close as wontfix, but might want to do in RAQ
68	HO2 heterogeneous loss rate 1st order(?)	No ticket	Nick Savage		NS to look at that. Leave open to review
72	UKCA Dry Deposition: Surface resistance values not set for some species	#1250	Alan Hewitt?		discussed above, have way forward
74	Bug in ukca_tropopause with definition of PV tropopause	#1283	Steven Hardiman	Change ownership?	discussed above, wrap together issues. Fix is separate from #75
75	Bug in STE fluxes	#1367	Fiona O'Connor		could be endgame. Needs further work
80	H2O feedback broken under ENDGAME	UM#1646	Colin Johnson		discussed above, keep open

Highlights from vn10.8 (LA)

vn10.8 UKCA tickets
UMPB May 2017 Highlight Report

• CJ: Water vapour feedback - This includes flux calculations of water production and loss available in stash, as well as a diagnostic which gives the change to q calculated at each timestep. (#1646 & #3123)
• LA: Quasi-Newton steps in Newton-Raphson solver - speeds up the model by ~2-3%. Will not bit-compare with runs without it however. (#2819)

Targets for vn10.9 (and beyond) (LA)

Ticket	Summary	Owner
100	PM10 and PM2.5 diagnostics for MODE	johnhemmings
1250	UKCA dry deposition: surface resistance values not set for some species	alanjhewitt
1703	Update appropriate UMDPs with regard UKCA-mode aerosol and interactions	janemulcahy
2086	Time updating for glomap climatology	alanjhewitt
2301	Improve the handling of emissions from explosive volcanoes in UKCA/GLOMAP	--
2382	rose stem app for Section 54	alanjhewitt
2405	Test and implement sea-salt density change	colinjohnson
2532	Review of option codes associated with UKCA burden diagnostics when running with BE solver	fionaoconnor
2587	Adding solar variability to photolysis scheme	fraserdennison
2689	Enable coupling of GLOMAP-MODE Aerosol to FAST-JX photolysis.	michaelhollaway
2741	Addition of new diagnostic for the dry deposition flux of nitrogen	fionaoconnor
2742	Addition of new diagnostic for the wet deposition flux of nitrogen	fionaoconnor
2898	Input CO2 concentrations into UKCA when interactive CO2 is operational	colinjohnson
3025	Add functionality to use NetCDF GLOMAP-mode climatology fields to generate fields required by ACTIVATE	alanjhewitt
3028	Improve STASH section references related to UKCA components.	mohitdalvi
3209	column-call UKCA Newton-Raphson solver	lukeabraham

Virtual Machine (LA)

UM Virtual Machine Guide - Note: this will be superseded by UMPB X10 from vn10.8 onwards.

Training (LA)

UKCA Training January 2018