Minutes of the code management group meeting 2023-07-03
Teleconference Details
Monday 3rd July 2023, 10.00am - 11.30am GMT
Meeting via Zoom - details have been emailed
Met Office: MS, AJH, CH, JH, MD, FM
Cambridge: NLA
Leeds: DG, MR
NIWA:
CSIRO:
Apologies: FOC, OM, AL
Actions from this meeting
- (ongoing) NLA to put
C_SPECIES
definitions in the Redundant Code table (short-term), and switch to useM_SPECIES
instead. Talk with JH about AQUM tests and requirements. Note that there will be problems with exoplanets and >100km top configs where M_air not constant. LA to make a branch and progress. May want to move to redundant code table at some point- ongoing
- (ongoing) GM/DG to update table on UKCA wiki documenting GLOMAP versions. DG/GM to consider the code and lodging process for GLOMAP developments and consider a suitable rose-stem test supported by NLA.
- ongoing
- (ongoing) NLA to feedback comments to JH on updated API document (reflecting the UMvn13.0 release) before it can be circulated.
- Action: JH to update to 13.3 and NLA to comment on this updated version
- (ongoing) ALL look at um:#6203 showing other unprotected rose-stem options and think about any code/settings they are interested in.
- ongoing
- (ongoing) ALL to consider who is best to add a test for 2-D photolysis as part of Photolysis API changes. Could be part of box model tests.
- ongoing
- (ongoing) NLA, AJH to identify owners for TropChem and StratChem items in the Desirable changes not Tested Table. AJH to arrange call with NLA. Should also update the UKCA UMDP to reflect which configurations are supported/widely used. Will consider after code freeze at the end of May.
- ongoing
- Strat is probably easier to run and has had recent usage, TropChem has had instability issues and could be put to deprecated
- (new) NLA to follow-up with JM, CH, and MS about column-call and potential testing
- closed
- There is a protocol in place which should be done on the new supercomputer. Might be interesting to see results from JW’s changes
- (ongoing) DG - activation change/possible bug to implement.
- closed
- (new) NLA to update UKCA development practices to include umdp3 testing from now on (see ukca:#76).
- closed
- (new) NLA to think about adding requirement for including LFRic rose-bush links on UKCA Ticket Summary pages, but need to be careful about requirement creep. Add in and see how people get on with it - may review inclusion at a later point.
- closed
- (new) NLA to raise rose-stem documentation (or lack thereof). and the very squeezed timeline this release with UM Sys at next UM Interfaces Group.
- ongoing - no meeting until next week
- (new) AJH to set up meeting re:LFRic namelists (AJH, JH, MD, NLA, Ian Boutle, & Steve Mullerworth)
- closed
- Can put in any namelist entries we want, but should think about deprecated options and don’t port those across
- We should check current rose-stem options and see which ones never change
- (new) JH, AJH, NLA breakdown bigger priority items into milestones
- ongoing
- (new) NLA to send Doodle poll for mid-July.
- closed
Actions from the Last Meeting (NLA)
Minutes of the code management group meeting 2023-05-15
- (ongoing) NLA to put
C_SPECIES
definitions in the Redundant Code table (short-term), and switch to useM_SPECIES
instead. Talk with JH about AQUM tests and requirements. Note that there will be problems with exoplanets and >100km top configs where M_air not constant. LA to make a branch and progress. May want to move to redundant code table at some point - (ongoing) GM/DG to update table on UKCA wiki documenting GLOMAP versions. DG/GM to consider the code and lodging process for GLOMAP developments and consider a suitable rose-stem test supported by NLA.
- (ongoing) JH on update API document to UMvn13.0 release. NLA to provide feedback before it is be circulated.
- (ongoing) ALL look at um:#6203 showing other unprotected rose-stem options and think about any code/settings they are interested in.
- (ongoing) ALL to consider who is best to add a test for 2-D photolysis as part of Photolysis API changes. Could be part of box model tests.
- (ongoing) NLA, AJH to identify owners for TropChem and StratChem items in the Desirable changes not Tested Table. AJH to arrange call with NLA. Should also update the UKCA UMDP to reflect which configurations are supported/widely used. Will consider after code freeze at the end of May.
- Strat is probably easier to run and has had recent usage, TropChem has had instability issues and could be put to deprecated
- (ongoing) NLA to raise rose-stem documentation (or lack thereof). and the very squeezed timeline this release with UM Sys at next UM Interfaces Group.
- (ongoing) JH, AJH, NLA breakdown bigger priority items into milestones
- (new) NLA to send Doodle poll for early-mid September.
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 keywords to all UKCA tickets. This should be a standard part of our working practice. Note also the required keywords.
- (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 for special occasions, e.g. to coincide with Composition-Climate Meeting.
- (ongoing - standing item) Code Owner to produce draft newsletter for CMG to approve.
- (ongoing - standing item) ALL to consider other rose-stem tests that could be included.
- (ongoing - standing item) ALL to email NLA with suggestions for next set of tutorials.
Tickets (NLA)
Tickets on MOSRS:
- UM Tickets: UM Jun-23 released
- UM Tickets: next UM release
- LFRic Tickets: Zebu (August 2023)
- LFRic Tickets: Ariel (November 2023)
- LFRic Tickets: Bianca (February 2024)
- UKCA Tickets: UM Summer 2023 released
- UKCA Tickets: UM Autumn 2023
PLEASE REMEMBER TO USE THE UKCA KEYWORD FOR ALL UKCA CHANGES
NOTE: The UM requirement for LFric testing
of all changes under UM:src/atmosphere, UKCA:src/science, and UKCA:src/control/core
Please also give any feedback on the UM release cycle to NLA to pass-back to UM Sys.
Message from UM Sys - please take care when considering keywords. It is important to get these correct for the Code Review process.
AJH highlighted the RADAER changes this release, which did not used to work for 1 integration point but now does. The science impact needs testing, but the code is 3-4x faster. NLA highlighted the Ubuntu 22.04 changes necessary for the Virtual Machine and UKCA training
Comments for UM interfaces group
- Because the previous release was late, there seemed to be a short turnaround
- Many thanks for understanding regarding some tickets
- Could potentially do with less releases a year to give more development time
Action: NLA to feed these back to UM Interfaces group
Update on UKCA API redesign (JH)
JH discussed his diagnostic handling ticket. This is big ticket with ~6 new modules and further changes to existing ones. It should hopefully be ready for review in next few weeks. It provides an alternative method for diagnostics that doesn’t use STASH using 2x API calls; one to set up the list of diagnostic requests (& determines whether a diagnostic is calculated), the other to update flags to activate/deactivate diagnostics from the list (& affects whether a diagnostic is output). It can be called at any point during the run. For ASAD diagnostics it turns them on or off in the list. Initially, 8 example diagnostics have been made available. These are requested by name. In the UM those 8 diagnostics will now use the new system rather than STASH. In practice, will probably have to do the same when migrating other diagnostics. Box model tests are still required. Currently, names are not CF-like, and are shorter. There was a discussion regarding the use of cf-standard(-like) names, and it was felt that a move to cf-standard names for diagnostics would be beneficial at this stage. MD and CN will be working on the API for the next ~6 months, including a photolysis API.
Progress with Priorities (NLA)
ACTION REQUEST FROM UKCA SCIENCE & MANAGEMENT BOARD: CMG to provide list of priorities & their status, with particular thought to UKESM2 changes that will be required.
The current priorities are:
# | Description | Owner | Desirable for UKESM2? | Status | Comments from this meeting | Complete |
---|---|---|---|---|---|---|
1 | UKCA API | John Hemmings (main) | No | UKCA API work is progressing (AJH). Radaer API on hold until after GA7 port to LFRic. Functionality of RADAER in LFRic currently works without an API although it will be preferable to update this in future. |
||
2 | UKCA and NAME coupling | John Hemmings (main) | No | ukca:#25 was lodged for UM13.2 | ||
3 | Review UKCA tests to cover all requirements | Luke Abraham / Mohit Dalvi | Will cover these in a table in future for review. Updated testing coverage on Linux and can run 1x1 decomposition |
|||
4 | Updates/fixes to GLOMAP routines | YES | AH asked about the stratospheric changes from a UKESM2 context, and whether there is any help for these. | |||
5 | Standalone UKCA configurations | Luke Abraham/Scott Archer-Nicholls | ExCALIBUR work progressing. Aim to remove UKCA from UM trunk at vn12.3. See UKCA Box Model page |
|||
6 | Emissions flexibility | Mohit Dalvi | ||||
7 | Separare UKCA repository | Luke Abraham | Separate UKCA trac environment set-up on MOSRS here, will hold UKCA code on completion of current ExCALIBUR project. Aiming for vn12.3. UKCA removed from UM at UMvn13.0 - see UKCA repo Closed |
yes | ||
8 | Non-API LFRic work, e.g. Porting aerosol science functionality etc. | Alan J Hewitt | No | Porting calculation of CDNC from GLOMAP Climatology aerosols complete. I will pass required elements of ukca_radaer to ukca_radaer_band_average (um:#5957) Porting calculation of fields in radaer_band_average to be passed to Socrates underway(lfric:#2488) Includes RADAER, need to use imode_setup=8 RADAER now callable from LFRic, can do GA-type comparisons from LFRic to UM. JH to put UKCA into LFRic soon - working in an SCM configuration (GLOMAP with offox) - needs more testing. A lot more work to do, possibly until end of 2021. AJH has tickets going in for 12.1 that would cover all of the basic GA7 but with climatological aerosol. JH tickets will do the prognostic alternative. JH currently has an LFRic-SCM configuration with prognostic aerosol. JH now has UKCA working in proto-GAL7 (LFRic) config. Needs to couple with convection & plume scavenging. Convection & plume scavenging has been done. AJH - some of this has been done or is in progress. |
yes | |
9 | RADAER API | Alan Hewitt (main) | No | Radaer API on hold until after GA7 port to LFRic. Functionality of RADAER in LFRic will work without an API although it will be preferable to update this in future. Not clear if RADAER will work independently of UM in single column mode. AJH and AH and JH and Ben Johnson and NB need to work out if desirable and practical to run independent of UM. |
||
10 | RADAER optimisation | Alan Hewitt (main) | NO | AJH highlighted that there have been some discussions about this - a few people interested in this (James Manners, AH, Ben Johnson, AJH). Have had someone looking to see if something could be changed to make it faster to make a trimmed-down version with less calculations for e.g. NWP. AJH and BJ to look at making number of integration points a user variable AJH and others to look at emulation of RADAER |
||
11 | Dry deposition and Jules tiles | YES | If Jules adds extra tiles for UKESM2 we may need to hard code options in dry deposition (like in um:#1761) Aerosol Dry Deposition will be considered in the JULES context once the gas-phase changes have been committed. Completed for UM13.1 |
yes | ||
12 | FastJX-GLOMAP coupling | YES | UMvn10.8 branches exist - see ticket UM:#2689 Note: FastJX rates also need updating - potential for code as well as input-file changes |
|||
13 | Cloud-J | |||||
14 | Fixes for chemistry rates and ASAD (bugs #101 & #103) | Luke Abraham | YES | #101 still open, #103 completed (necessary for GC5 ticket GMED:#551) Issues on EX1A. Closed - see also UKESM:#841 for UKCA package ticket |
yes | |
15 | Rc fixes for water (bug #104) | UKESM Core Team | YES | Lodged at UMvn11.7 in ticket UM:#5167 | yes | |
16 | CH4 deposition fixes (bug #109) | Gerd Folberth | YES | Closed | yes | |
17 | UKCA STASHmaster PP-codes | Luke Abraham | Verification system makes some use of existing PP-codes. New items should have a PP-code of 0 and verification team will use STASH items for these if required. | |||
18 | Removal of redundant code | ALL | No | Parked whilst GA7.0 is a protected suite. | ||
19 | GLOMAP-CLIM API refresh | Alan J Hewitt | No | Parked until science functionality around GLOMAP aerosols ported to LFRic. | ||
20 | N48L85 configuration | |||||
21 | ACTIVATE optimisation | TBC | A quick win here is to reduce nwbins in namelist ( see um:#4740 ). Parked for now. |
There does not seem to be resource to look at this at present. | There was a short discussion around whether this had any science benefits, and it was thought it could be tested for UKESM-fast. Another potential change would be to alter the call to only when there are clouds | |
22 | Stratospheric Ozone improvements | James Keeble/Luke Abraham | YES UKESM:#729 |
Work ongoing, covered in ticket UM:#5641. Note: FastJX rates also need updating - potential for code as well as input-file changes See also UKESM:#841 for UKCA package ticket |
||
23 | Solar cycle in photolysis | Luke Abraham | YES UKESM:#732 |
Some code lodged at UMvn10.9 (UM:#2587) but needs bugfixing. This work has stalled in ticket UM:#4828 (bug #110). UM:#4828 lodged for UMvn12.2. See also UKESM:#841 for UKCA package ticket |
||
24 | Deposition updates from CSIRO | YES UKESM:#730 UKESM:#739 |
Code lodged in UM:#4020 (UMvn11.4, oceanic dry deposition) and UM:#5713 (UMvn11.8, Lightning NOx updates). See also UKESM:#841 for UKCA package ticket |
|||
25 | Sol/Insol | Anthony Jones (main) | No | ukca:#14 was lodged for UM13.2 | yes | |
26 | Glomap aerosol and GPU | Alan J Hewitt (main) | No | Started at vn13.3 |
Bugs/Bugfixes (NLA)
Open Bugs
# | Description | Ticket | Owner | Comments | Comments from this meeting |
---|---|---|---|---|---|
124 | H2 and N2 cannot be set for RCP and WMOA1 scenario routines | UM:#5620 | Mohit Dalvi | Values are hard-wired in the code and cannot be changed without a branch Will be handled at UM11.8 At least for the next version Keep open Tested it quickly - N2 is used from namelist but not obvious, but H2 needs further testing |
|
128 | Bug in UKCA stratospheric chemistry diagnostics | UM:#5839 | Luke Abraham | pre-UMvn10.0. The indexing/values of diagnostics m01s50i101-i104 are incorrect. Fixes provided for vn11.1 and vn11.7. May affect CMIP6 diagnostics May be best to lump #101. NLA to contact JM Should be fixed for UKESM2 Biggish ticket for 12.2 with bug fixes. See if can be done for 12.3 Nice to do ASAP, but if just diagnostics might be able to do at a later time. |
|
135 | The SO2 dry deposition improvements added under #5167 do not work for Convection permitting configurations (e.g Nested suite) and fail due to absence of Convection diagnostics. | um:#6433 | The error message could be turned to a warning and related fields initialised to zero | Closed | |
136 | There appears to be a bug in some Section 51 diagnostics. | 6598 | 51996 and 51999 are fine. 51921 and 51922 are broken. Other fields unknown. Problem uncovered during 6358 May just linger. Should we take the broken ones out? MD has opened a ticket to see which ones fail and which ones work |
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140 | Heaviside Function cannot have multiple level sets | um:#6816 | The Heaviside function needed to scale UKCA pressure-level diagnostics is valid only for a single set of pressure levels from Stash requests. If some Sec 51/52 diagnostics are requested on say 19 pressure-levels and the same/ different ones on 36 pressure-levels, the Heaviside field in output will be applicable to only one of these. May be able to request multiple Heaviside functions |
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143 | Error in print statements from UKCA_TRACERS_COPY_FROM_UM | The final species listed in the diagnostic print statement seems to have very large concentrations (O(1E+08)) compared to others in the ppm-ppt range. Does not seem to affect model output. Reported by James Weber. | |||
144 | interchangeable use of specific humidity and water vapour mixing ratio | #6813 | UKCA includes calculations of relative humidity, clear-sky relative humidity and saturation vapour pressure. Relative humidity calculations should be based on water vapour mass mixing ratio but are in part based on specific humidity. Also, the calculation of saturation vapour pressure is derived from saturation mixing ratio but uses a formula for deriving SVP from saturation specific humidity. This interchangeable use of specific humidity (ratio for moist air) and mixing ratio (ratio for dry air) in existing configurations introduces small numerical errors in UM and LFRic model runs. These bugs were identified at UM version vn12.2 and have been highlighted by comments in code lodged with UM ticket #6660 (in ukca_main1-ukca_main1.F90 and atmos_ukca_humidity_mod.F90). All UKCA configurations are affected. JH doesn’t think it’s complicated but not particularly trivial either. |
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145 | all_ntp not explicitly dimensioned in UKCA_MAIN | Possible fix here | all_ntp not being dimensioned explicitly in ukca_main1-ukca_main1.F90. Highlighted in NCAS CMS ticket https://cms-helpdesk.ncas.ac.uk/t/nested-ukca-suite-on-archer2/604 raised by Paul Field. Grenville Lister has found the cause and implemented a possible fix https://code.metoffice.gov.uk/trac/um/changeset/110132/main/branches/dev/grenvillelister/vn12.0_all_ntp_fix |
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147 | Missing products in Sec-50 diagnostics: Mismatch in ukca_chem_master and asad_flux_dat 50-092 STRATOSPHERIC OH LOSS (B153) Products for (OH + H2) changed under scheme v121 but not reflected in asad_flux_dat 50-123 STRAT O3 LOSS: HO2 + NO3 (B61) Product O2 not available for StratTrop After chem v121/ always |
Luke Abraham | NLA to take a look | ||
148 | There is a bug in the UKCA Abdul-Razzak Ghan droplet activation scheme whereby the weighted mean hygroscopicity of the internally mixed aerosols within a given mode is calculated incorrectly if there is more than one soluble aerosol composition type present (e.g., sulphate and sea-salt), with the hygroscopicity being underestimated – this will lead too few droplets being activated. The underestimate gets worse as the mass of the two soluble components become equal, and as the mass of the insoluble aerosol diminishes. The ticket also introduces new values for the hygroscopicities for sulphate and organic carbon. It could be argued that the use of the old values also represents a bug since the model previously assumed a zero hygroscopicity of organic carbon and a too-high value for sulphate. Or these could be more considered value changes. |
ukca:#106 um:#6174 |
Closed | ||
149 | There is a bug that causes the wrong photolysis rate field to be output for the JNO2 diagnostic when using the CRISTRAT scheme. This results from an indexing problem in photol_diags in ukca_um_photol_ctl_mod.F90 (UM vn13.2) causing the wrong photolysis rate field to be output. In lines 641-667, the loop used to find the index for accessing the required field data in ‘photol_rates’ relies on finding the position of the ‘jno2’ label in the ratj_varnames array and does not stop searching until the end of the array. In the CRISTRAT scheme there are multiple ‘jno2’ labels with different quantum yields and only one (with yield = 100%) is the correct one for the NO2 reaction. The others are for different reactions whose rates are derived from that. The index selected will be the last of the ‘jno2’ entries which is for the wrong reaction when there are multiple entries. The same processing is used for other photolysis rate labels but I don’t think these have multiple entries. The ratj_varnames array referred to above is returned by a call to the ukca_get_photol_reaction_data API routine (dummy argument varnames_ptr). It holds the fname component of the ratj_defs structure for each photolysis reaction in the chemistry scheme. The inline documentation for this routine in ukca_chem_defs_mod.F90 does not indicate that the list returned may contain duplicates. This should be made clear to reduce the risk of misuse in future. The bug will be corrected by UKCA:#29 and linked UM ticket #7205. These tickets will remove the existing UM-side code for the photolysis rate diagnostics and replace it with code using the new UKCA diagnostic handling scheme. This will access jrates after their input to UKCA as environmental driver data not before and it uses a more robust method to index the correct fields. |
ukca:#29 um:#7205 |
John Hemmings | ||
150 | ukca_ddepctl bug for 27 tiles | ukca:#19 | Will alter results of 27 tile ukesm1 runs. Fixed in Jules code by Garry, so no bug in UKESM2. |
Will affect any job where ice isn’t the last tile. Not that not all UKCA configurations use JULES - e.g. ACCESS |
Redundant Code (NLA)
Code for deletion
PLEASE REMEMBER TO EDIT THE ORIGINAL REDUNDANT CODE TABLE AND NOT THIS PAGE
- The NG-Composition Project Board has agreed to use the Redundant code table as the Technical Debt Log for UKCA as part of that project. This has highlighted the issue that some areas of code are not listed as being redundant, but are also not tested/used routinely and are not in any rose-stem tests, for example 2D photolysis and the TropIsop and Strat chemistry schemes. We have been asked to review this code and list untested code which is still desirable to be included for testing, and to ensure that other areas of code are listed for deletion.
- It is noted that we may have more time to work on these once LFRic work is done, and most can't be retired as under rose-stem for GA7.
# | Description | Ticket | Remarks | Status | Timeframe | Owner | Comments from previous meetings | Comments from this meeting |
---|---|---|---|---|---|---|---|---|
4 | ukca_strat_update.F90 - relax_ozone | UM:#1505 | None | PROPOSED | Medium-term | Luke Abraham | ||
5 | Backward Euler Standard Tropospheric Chemistry | UM:#1507 | None | PROPOSED | Medium-term | Fiona O'Connor | ||
6 | Wet oxidation of SO2 in GLOMAP | UM:#4475 | None | PROPOSED | Medium-term | Colin Johnson | JM to look at this re: UKESM1 c.f. offline GLOMAP. JM to take ownership. Still needed for CTM. Relevance for standalone code and later coupling to CTM. |
|
7 | Updraft velocity - l_conv_tke | UM:#3668 | Proposed in December 2017. Approval being sought for GA series (likely GA8). | PROPOSED | Medium-term | Alan J Hewitt / Ian Boutle | ||
8 | All backward Euler chemistry schemes | None | Note that this is only for the “hard-coded” BE schemes. Quite a lot of work would be involved, but good as a longer-term aim. Note that problems for AQUM would need to be addressed first. | PROPOSED | Long-term | Luke Abraham | ||
9 | Deprecated UKCA netcdf attribute options | UM:#2513 | 'emission_type', string type attributes no longer recommeneded. Need some time for most new code to adopt these. Still used in AQUM files. | DEPRECATED | Medium-term | Nick Savage | AQUM are addressing the files. Have gone from operational jobs, have ticket to remove from rose-stem. LN to document. These have been removed from AQUM. AQUM work has been done. From AS: In the ancil ticket linked from #2513 (https://code.metoffice.gov.uk/trac/ancil/ticket/782) it says that GA7 depends on the old format files, and as far as I know this is still true. In the 3-step timeline suggested, we haven't reached step 2 unfortunately. That ticket was about ensuring GA8 did not use the old attributes. I believe that GA8 is due for release in the next few months (it has been a very long time coming), so UM vn11.5 may be the last version at which GA7 is supported. Do you mind waiting a bit longer? AJH to follow-up with LA |
|
10 | ASAD families chemistry | None | Families chemistry has not been used for many years (since at least UM6.1. It is likely that it no longer works if turned on, and it complicates the code making other developments harder | DEPRECATED | Short-term | Luke Abraham | ||
11 | Dry deposition 9 PFT option | None | The 13 PFT option has been adopted for UKESM1. The 9 PFT option is possibly not being used at all. Proposed in June 2018. |
PROPOSED | Long-term | Alan J Hewitt | AJH may be able to remove 9 PFT option, but it might be better to do when removing other dry-dep temporary logicals. | |
12 | Remove explicit C_SPECIES constants and calculate these from M_SPECIES and the mass of air |
None | Will have wide-ranging rose-stem KGO breakages | PROPOSED | Short-term | Luke Abraham | ||
13 | Remove temporary logical l_fix_nacl_density Introduced at UM:#2405 |
UM:#3490 | Requires AMIP testing and a GMED ticket Could be accepted to GA9 |
PROPOSED | Medium-term | Jane Mulcahy | See JM GMED action | |
15 | Remove temporary logical l_fix_ukca_impscav Introduced at UM:#1421 |
UM:#4145 | Approval being sought for GA series (likely GA9) GMED:#402 |
PROPOSED | Medium-term | Alan J Hewitt | See JM GMED action | |
16 | Remove temporary logical l_fix_improve_drydep Introduced at UM:#1250 |
UM:#3997 | Approval being sought for GA series (likely GA9) GMED:#393 |
PROPOSED | Medium-term | Alan J Hewitt | See JM GMED action | |
17 | Remove temporary logical l_fix_ukca_h2dd_x Introduced at UM:#4157 |
UM:#4245 | Approval being sought for GA series (likely GA9) GMED:#410 |
PROPOSED | Medium-term | Alan J Hewitt | See JM GMED action | |
18 | Remove temporary logical l_fix_neg_pvol_wat Introduced at UM:#4383 |
UM:#4416 | Approval being sought for GA series (likely GA9) GMED:#421 |
PROPOSED | Medium-term | Alan J Hewitt | ||
21 | Remove code behind L_use_stratclim from ukca_fastjx_mod Introduced prior to MOSRS |
UM:#4854 | This could either be properly included via a namelist or removed from the UM | PROPOSED | Medium-term | Alan J Hewitt | LA contact OW about progressing FastJX-RADAER work Ties in with API work. MD/NC to take a look, can be removed. Do as part of API. Relevant person take ownership as part of API work NC to take ownership as part of his work |
|
22 | Remove temporary logical l_fix_ukca_input_meoh_emiss Introduced at UM:#3031 |
UM:#4848 | Approval being sought for GA series (likely GA9) GMED:#461 |
PROPOSED | Medium-term | Mohit Dalvi | ||
24 | Remove ability to use of Cambridge 2D model data from ukca_stratf.F90 | PROPOSED | Neal Carr | Need to confirm from wider community for possible tropospheric configs and other choices for top-bdy | ||||
25 | Change from using ukca_chem_master.F90 to a file-read for the chemical mechanism | PROPOSED | Short-term | Luke Abraham | Current chem_master module has compiler issues with that require changes to optimisation level on some compilers. A file read would be more flexible and would allow the mechanism to be more easily changed not requiring UM/UKCA code tickets. | |||
26 | highorder_scheme | PROPOSED | Mohit Dalvi | May need to test this in rose-stem |
Desirable Science not tested
PLEASE REMEMBER TO EDIT THE ORIGINAL SCIENCE NOT TESTED TABLE AND NOT THIS PAGE
See also the complete list of unprotected rose-stem options
# | Description | Ticket | Remarks | Owner |
---|---|---|---|---|
1 | Use of tropospheric (2D) look-up table photolysis | Still useful to compare against FastJX. May be used for a "fast" configuration. Will be doen as part of photolysis refactoring | ||
2 | TropIsop chemistry configuration | May be useful in a "fast" configuration & to drive GLOMAP-mode. Useful for low-top configurations. | ||
3 | Strat chemistry configuration | Useful for stratospheric studies, particularly with a high model top. |
Round (virtual) Table of current activities, plans
Person | Activity |
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