Minutes of the chemistry working group meeting 19/3/2014

Minutes of Skype held on 19/3/2014 – 15:00 GMT Present: NLA, ATA, FOC, GAF and MD

Discussion on the role of this working group: This group, as with many of the working groups, is operating in a responsive mode to make progress on model issues. We see that a major aim of this group for the future is to be able to help steer and provide input to make long-term strategic improvements. As there are an increasing number of working groups we are mindful that people don’t want to get sucked into spending all their time in meetings, but it’s important that there is a good dialogue between the different working groups.

Reserved business:

1) Modifications to previous minutes: None to report.

2) Review of outstanding action items. FOC: Timelines to work to need to be identified. Good to base these on UM code freezes. ACTION to think about when/what (GAx) to tie strategic model developments too.

FOC: Plans for the UKCA evaluation suit (1) porting to python (2) extending to other data sets (CCMVal etc) (3) Ext to compare between model runs (4) Super metrics (5) incorporate into Maverick (6) Include into other packages.

Remaining ACTION ATA to look for water vapour bug at 7.3.

FOC still working on fixed CH4. Wants to get a RC4 run working but having problems. May try and remove MODE as having SPARSE VAR problems.

ACTION ATA to pick up the working run from FOC and play with top boundary.

3) a) TTT PEG update ACTION FOC: To implement the diagnostics from O3 sondes into HadGEM3 runs. ACTION ATA: Look into implementing the sat operators from – TES.

3) b) NOy PEG update NLA: NOy PEG advised to create a new method of advecting NOy – new routine to be written. ACTION continue, work in progress. Based on results will schedule another PEG in the future. Hopeful that the new method can be implemented by mid April. FOC said NLA may want to look at calc_tracer_mass routine.

3) c) ACITES updates ACTION ATA, FOC, GAF and MD to talk at York to folk about the super metrics.

3) d) JWCRP update FOC: JWCRP post has had interviews and offer has been made. FOC reiterated some of the aims of the post. Short-term aim to look at the solver with some clear long term aims to look at impacts of amongst other things parallelization speeds ups (making use of openMP).

FOC: Paul Fields has secured two software engineering posts for UKCA. ALL agreed this is fantastic news!

4) AOB GF: Update on O3 deposition. Edinburgh found an inconsistency in the Wesley scheme. Mainly a naming convention issue. GAF has prepared an update to this. ACTION GAF to check that this is in 8.x and if so to raise a bug fix ticket if needed for 9.1.