Minutes of the code management group meeting 2018-02-21

Teleconference Details

Thursday 19th October 2017, 10am - 12noon BST

UK Landline: +44 (0)1223 761376 (x61376 from an internal University of Cambridge phone)
Participant passcode: 146205

Present

Met Office: Fiona O'Connor (FOC), Jane Mulcahy (JM), John Hemmings (JH), Mohit Dalvi (MD), Alan Hewitt (AH), Marc Stringer (MS)

Cambridge: Luke Abraham (LA), James Keeble (JK)

Leeds: Mark Richardson (MR)

Reading:

Lancaster: Michael Hollaway (MH)

Edinburgh:

UEA: Marcus Koehler (MK)

NIWA: Olaf Morgenstern (OM), Fraser Dennison (FD)

CSIRO:

Apologies: Oliver Wild (OW), Nicolas Bellouin (NB), Ashok Luhar (AL), Paul Griffiths (PG)

Not present: Graham Mann (GM), Scott Archer-Nicolls (SAN)

Actions from this meeting

One off actions

(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.
(ongoing) LA to migrate PUMA UM tickets to MOSRS - see table below.
(ongoing) LA to open tickets for all changes that still require a ticket.
(ongoing) FOC to open ticket + Bugfixes Table entry related to 'Unable to calculate tropopause' warnings.
(ongoing) FOC to recommend at next Exec meeting a policy of allowing only CMG to (certify and) distribute any UKCA configurations for science purpose.
(ongoing) LA (& others who are interested) to look into how to re-organise the UKCA panel (e.g. into sub-panels) & think about removal of namelist items.
(ongoing) LA to organise a follow-up meeting of interested parties on the UKCA panel re-organisation.
(ongoing) MD to collate all UKCA parameters into ukca_constants in advance of removing duplicates already available in the UM and circulate details.
(ongoing) JM to continue discussions with CJ regarding "Wet oxidation of SO2 in GLOMAP" and other issues regarding redundant code.
(ongoing) AH to scope out reducing repetition of mode definitions in GLOMAP.
(ongoing) MD to set up TS2000 nudged jobs at vn10.8.
(ongoing) LA to add UKCA wiki page on using UKCA on the Virtual Machine.
(new) LA to embolden all ALL actions in future meetings
(new) FOC to arrange meeting between FOC, MR, MS, LA (& others who are interested) to sit down and decide a plan to move forward with OpenMP work, before new person starts.
(new) LA to update Redundant code tables with above information
(new) LA and MD to talk offline about releases.
(new) LA to look into recording lectures at January 2018 training
(new) LA to set-up doodle poll for sometime between 9th-28th February 2018.

Standing actions

(ongoing - standing item) CMG to monitor list of bugs and circulate between group for owners.
(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).
(ongoing - standing item) ALL with access to keep monitoring ukca_bugs email list.
(ongoing - standing item) ALL to think about if code changes will change KGO and let systems team know in good time, and remember to include the UKCA & SC0138 keywords to all UKCA tickets. This should be a standard part of our working practice.
(ongoing - standing item) ALL to note, review, and remove obsolete/redundant code
(ongoing - standing item) ALL closed ticket owners to produce a summary of their change for the UKCA newsletter
(ongoing - standing item) Code Owner to produce draft newsletter for CMG to approve.

Minutes

Actions from the Last Meeting (LA)

Minutes of the code management group meeting 2017-10-19

One off actions

Bugs/Bugfixes (LA)

Open Bugs

#	Description	Ticket	Owner	Comments from previous meeting

31	FP exceptions in asad_sparse_vars or asad_spimjmp	#368 (MOSRS)	Nick Savage	leave open
35	Error in labelling: Surface resistance <--> stomatal resistance ?	MOSRS #1409	Fiona O'Connor	leave open
57	Incorrect logic for DMS anciliaries required	#756 (MOSRS)	Nick Savage	Possibly close: JM to check impact
72	UKCA Dry Deposition: Surface resistance values not set for some species	#1250	Alan Hewitt?	leave open
74	Bug in ukca_tropopause with definition of PV tropopause	#1283	Steven Hardiman	leave ope
75	Bug in STE fluxes	#1367	Fiona O'Connor	leave open. still not sure what is going on
87	Possible issues with YSTORE in UKCA_CHEMISTRY_CTL.	UM#3245	Colin Johnson/ Luke Abraham	leave open
92	UMDP084 incorrectly labels 38-476 ("Liquid cloud fraction") with units "m-3". It is a pure fraction (in the range 0.0 to 1.0) and so has no unit.
93	Inconsistent surface resistance values for organic hydro-peroxide (rooh)	UM#3793	AlanJHewitt ???

Redundant Code

Code for deletion

#	Description	Ticket	Remarks	Status	Owner
2	Old dry deposition scheme	#2356	None	PROPOSED	Nick Savage
4	ukca_strat_update.F90 - relax_ozone	#1505	None	PROPOSED	Nick Savage
5	Backward Euler Standard Tropospheric Chemistry	#1507	None	PROPOSED	Nick Savage
6	Wet oxidation of SO2 in GLOMAP	None	None	PROPOSED	Colin Johnson
7	Updraft velocity	#3668	Proposed in December 2017	PROPOSED	Alan J Hewitt
8	All backward Euler chemistry schemes	None	None	PROPOSED	Luke Abraham