Difference between revisions of "Redundant code"

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!style="text-align:top;|Owner
 
!style="text-align:top;|Owner
 
|-
 
|-
| 1 || Old emissions code (that which uses ancil files) || [https://code.metoffice.gov.uk/trac/um/ticket/142 UM:#142] || None || '''Complete''' || || Nick Savage ||
+
| 1 || Old emissions code (that which uses ancil files) || [https://code.metoffice.gov.uk/trac/um/ticket/142 UM:#142] || None || '''Complete''' || ||
 
|-
 
|-
| 2 || Old dry deposition scheme || [https://code.metoffice.gov.uk/trac/um/ticket/2356 UM:#2356] || None || '''PROPOSED''' || Medium-term || Nick Savage ||
+
| 2 || Old dry deposition scheme || [https://code.metoffice.gov.uk/trac/um/ticket/2356 UM:#2356] || None || '''DO NOT REMOVE''' || It is still desirable to keep this scheme at present || Luke Abraham
 
|-
 
|-
| 3 || ukca_volume_mode.F90 <br/> quick method for calculating wet volume is not used. || [https://code.metoffice.gov.uk/trac/um/ticket/2373 #2373] || iwvolmethod removed. || '''Complete''' || || Alan J Hewitt ||
+
| 3 || ukca_volume_mode.F90 <br/> quick method for calculating wet volume is not used. || [https://code.metoffice.gov.uk/trac/um/ticket/2373 UM:#2373] || iwvolmethod removed. || '''Complete''' || || Alan J Hewitt
 
|-
 
|-
| 4 || ukca_strat_update.F90 - relax_ozone || [https://code.metoffice.gov.uk/trac/um/ticket/1505 UM:#1505] || None || '''PROPOSED''' || Medium-term || Luke Abraham ||
+
| 4 || ukca_strat_update.F90 - relax_ozone || [https://code.metoffice.gov.uk/trac/um/ticket/1505 UM:#1505] || None || '''PROPOSED''' || Medium-term || Luke Abraham
 
|-
 
|-
| 5 || Backward Euler Standard Tropospheric Chemistry || [https://code.metoffice.gov.uk/trac/um/ticket/1507 UM:#1507] || None || '''PROPOSED''' || Medium-term || Fiona O'Connor ||
+
| 5 || Backward Euler Standard Tropospheric Chemistry || [https://code.metoffice.gov.uk/trac/um/ticket/1507 UM:#1507] || None || '''PROPOSED''' || Medium-term || Fiona O'Connor
 
|-
 
|-
| 6 || Wet oxidation of SO2 in GLOMAP || None || None || '''PROPOSED''' ||<br/> Medium-term || Colin Johnson ||
+
| 6 || Wet oxidation of SO2 in GLOMAP || None || None || '''PROPOSED''' ||<br/> Medium-term ||
 
|-<br/>
 
|-<br/>
| 7 || Retire l_conv_tke (Updraft velocity) <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1645 UM:#1645] || [https://code.metoffice.gov.uk/trac/um/ticket/3668 UM:#3668] || Approval being sought for GA series (likely GA8) <br/> GA7.0 [https://code.metoffice.gov.uk/trac/gmed/ticket/197 GMED:#197] and GA7.1 [https://code.metoffice.gov.uk/trac/gmed/ticket/286 GMED:#286] <br/> Ticket passed to Ian Boutle || '''PROPOSED''' || Medium-term || Ian Boutle ||
+
| 7 || Retire l_conv_tke (Updraft velocity) <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1645 UM:#1645] || [https://code.metoffice.gov.uk/trac/um/ticket/3668 UM:#3668] || Approval being sought for GA series (likely GA8) <br/> GA7.0 [https://code.metoffice.gov.uk/trac/gmed/ticket/197 GMED:#197] and GA7.1 [https://code.metoffice.gov.uk/trac/gmed/ticket/286 GMED:#286] <br/> Ticket passed to Ian Boutle || '''PROPOSED''' || Medium-term || Ian Boutle
 
|-
 
|-
| 8 || All backward Euler chemistry schemes || None || Note that this is only for the “hard-coded” BE schemes. <br/> Quite a lot of work would be involved, but good as a longer-term aim. <br/> ''Note'' that problems for AQUM would need to be addressed first. || '''PROPOSED''' || Long-term || Luke Abraham ||
+
| 8 || All backward Euler chemistry schemes || None || Note that this is only for the “hard-coded” BE schemes. <br/> Quite a lot of work would be involved, but good as a longer-term aim. <br/> ''Note'' that problems for AQUM would need to be addressed first. || '''PROPOSED''' || Long-term || Luke Abraham
 
|-
 
|-
| 9 || Deprecated UKCA netcdf attribute options || [https://code.metoffice.gov.uk/trac/um/ticket/2513 UM:#2513] || 'emission_type', string type attributes no longer recommeneded. <br/> Need some time for most new code to adopt these. <br/> Still used in AQUM files. || '''DEPRECATED''' || Long-term || Nick Savage ||
+
| 9 || Deprecated UKCA netcdf attribute options || [https://code.metoffice.gov.uk/trac/um/ticket/2513 UM:#2513] || 'emission_type', string type attributes no longer recommeneded. <br/> Need some time for most new code to adopt these. <br/> Still used in AQUM rose stem files - will be removed in [https://code.metoffice.gov.uk/trac/um/ticket/3985 UM:#3985].<br/>''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.'' || '''DEPRECATED''' || Long-term ||
 
|-
 
|-
| 10 || ASAD families chemistry || None || Families chemistry has not been used for many years (since at least UM6.1). <br/> 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 ||
+
| 10 || ASAD families chemistry || None || Families chemistry has not been used for many years (since at least UM6.1). <br/> 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. <br/> The 9 PFT option is possibly not being used at all. <br/> Proposed in June 2018. || '''PROPOSED''' || Long-term || Alan J Hewitt ||
+
| 11 || Dry deposition 9 PFT option || [https://code.metoffice.gov.uk/trac/um/ticket/4259 UM:#4259] || The 13 PFT option has been adopted for UKESM1. <br/> The 9 PFT option is possibly not being used at all. <br/> Proposed in June 2018. <br/> Update - 9 PFT is not required. <br/> This could be retired at the <br/> same time that another <br/> PFT option is added. || '''DEPRICATED''' || Long-term || Alan J Hewitt
 
|-
 
|-
| 12 || Remove explicit <code>C_SPECIES</code> constants and calculate these from <code>M_SPECIES</code> and the mass of air || None || Will have wide-ranging rose-stem KGO breakages || '''PROPOSED''' || Short-term || Luke Abraham ||
+
| 12 || Remove explicit <code>C_SPECIES</code> constants and calculate these from <code>M_SPECIES</code> 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 <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/2405 UM:#2405] by Colin Johnson || [https://code.metoffice.gov.uk/trac/um/ticket/3490 UM:#3490] || Requires AMIP testing an a GMED ticket <br/> Could be accepted to GA9 || '''PROPOSED''' || Medium-term || '''None''' ||
+
| 13 || Remove temporary logical l_fix_nacl_density <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/2405 UM:#2405] by Colin Johnson || [https://code.metoffice.gov.uk/trac/um/ticket/3490 UM:#3490] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/426 GMED:#426] || '''PROPOSED''' || Medium-term || Jane Mulcahy
 
|-
 
|-
| 14 || Remove temporary logical l_fix_nh4no3_equilibrium <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/646 UM:#646] by Carlos Ordonez || None || Requires AMIP testing an a GMED ticket <br/> Could be accepted to GA9 || '''PROPOSED''' || Medium-term || '''None''' ||
+
| 14 || Remove temporary logical l_fix_nh4no3_equilibrium <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/646 UM:#646] || [https://code.metoffice.gov.uk/trac/um/ticket/4382 UM:#4382] || l_fix_nh4no3_equilibrium removed || '''Complete''' || || Pedro Molina-Jimenez
 
|-
 
|-
| 15 || Remove temporary logical l_fix_ukca_impscav <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1421 UM:#1421] || [https://code.metoffice.gov.uk/trac/um/ticket/4145 UM:#4145] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/402 GMED:#402] || '''PROPOSED''' || Medium-term || Alan J Hewitt ||
+
| 15 || Remove temporary logical l_fix_ukca_impscav <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1421 UM:#1421] || [https://code.metoffice.gov.uk/trac/um/ticket/4145 UM:#4145] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/402 GMED:#402] || '''PROPOSED''' || Medium-term || Joana Rodrigues <br/> (Alan J Hewitt)
 
|-
 
|-
| 16 || Remove temporary logical l_fix_improve_drydep <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1250 UM:#1250] || [https://code.metoffice.gov.uk/trac/um/ticket/3997 UM:#3997] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/393 GMED:#393] || '''PROPOSED''' || Medium-term || Alan J Hewitt ||
+
| 16 || Remove temporary logical l_fix_improve_drydep <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/1250 UM:#1250] || [https://code.metoffice.gov.uk/trac/um/ticket/3997 UM:#3997] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/393 GMED:#393] || '''PROPOSED''' || Medium-term || Alan J Hewitt
  +
|-
 
| 17 || Remove temporary logical l_fix_ukca_h2dd_x <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/4157 UM:#4157] || [https://code.metoffice.gov.uk/trac/um/ticket/4245 UM:#4245] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/410 GMED:#410] || '''PROPOSED''' || Medium-term || Callum Dinnet <br/> (Alan J Hewitt)
  +
|-
  +
| 18 || Remove temporary logical l_fix_neg_pvol_wat <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/4383 UM:#4383] || [https://code.metoffice.gov.uk/trac/um/ticket/4416 UM:#4416] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/421 GMED:#421] || '''PROPOSED''' || Medium-term || Helena Reid <br/> (Alan J Hewitt)
  +
|-
  +
| 19 || Remove MODULEs/SUBROUTINEs/FUNCTIONs <br/> within UKCA not called within the UM: <br/> <br/> SUBROUTINE asad_dealloc_chemdiag <br/> FUNCTION cd_findspeciesloc <br/> SUBROUTINE asad_lin_diagnostic <br/> FUNCTION prcount <br/> MODULE asad_inhet_mod and SUBROUTINE asad_inhet <br/> MODULE asad_inphot_mod and SUBROUTINE asad_inphot <br/> SUBROUTINE asad_mod_final <br/> MODULE asad_ycn_mod and SUBROUTINE asad_ycn <br/> SUBROUTINE activmkpdf <br/> MODULE ukca_fixedsb_mod and SUBROUTINE ukca_fixedsb <br/> SUBROUTINE deallocate_radaer_struct <br/> SUBROUTINE ukca_relax_ozone || [https://code.metoffice.gov.uk/trac/um/ticket/4512 UM:#4512] || Not called within UM <br/> Need to decide whether any should be kept <br/> <br/> [https://code.metoffice.gov.uk/trac/um/log/main/branches/dev/alanjhewitt/vn11.3_remove_redundant_UKCA_code vn11.3_remove_redundant_UKCA_code] <br/> <br/> Dont remove photolib/quanto1d_mod.F90 - leave photolysis schemes alone<br/> Remove asad_emissn_mod in separate ticket|| '''Complete''' || || Alan J Hewitt
  +
|-
  +
| 20 || Remove MODULEs/SUBROUTINEs/FUNCTIONs <br/> within UKCA not called within the UM: <br/> <br/> MODULE asad_emissn_mod and SUBROUTINE asad_emissn <br/> MODULE asad_inemit_mod and SUBROUTINE asad_inemit || [https://code.metoffice.gov.uk/trac/um/ticket/4827 UM:#4827] || Requires removing additional redundant emission code from ukca_chem_master.F90 [https://code.metoffice.gov.uk/trac/um/log/main/branches/dev/alanjhewitt/vn11.3_remove_asad_emissn_mod vn11.3_remove_asad_emissn_mod] || '''Complete''' || || Alan J Hewitt
  +
|-
  +
| 21 || Remove code behind L_use_stratclim from ukca_fastjx_mod <br/> Introduced prior to MOSRS || [https://code.metoffice.gov.uk/trac/um/ticket/5488 UM:#5488] || This could either be properly included via a namelist or removed from the UM || '''Complete''' || ||
  +
|-
  +
| 22 || Remove temporary logical l_fix_ukca_input_meoh_emiss <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/3031 UM:#3031] || [https://code.metoffice.gov.uk/trac/um/ticket/4848 UM:#4848] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/461 GMED:#461] || '''Complete''' || Medium-term || Charlotte Norris
  +
|-
  +
| 23 || Remove unused local and argument variables <br/> This can be repeated at vn11.6 || [https://code.metoffice.gov.uk/trac/um/ticket/4832 UM:#4832] || Details on how to find these in [https://code.metoffice.gov.uk/trac/um/ticket/4832 UM:#4832] || '''Complete''' || || Alan J Hewitt
  +
|-
  +
| 24 || Remove ability to use of Cambridge 2D model data from ukca_stratf.F90 || || || '''PROPOSED''' || ||
  +
|-
  +
| 25 || Change from using ukca_chem_master.F90 to a file-read for the chemical mechanism || || 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. || '''PROPOSED''' || Short-term || Luke Abraham
  +
|-
  +
| 26 || highorder_scheme || || May need to test this in rose-stem || '''PROPOSED''' || || Mohit Dalvi
  +
|-
  +
| 27 || ''Stratospheric photolysis'': Remove code for reading of JTABLE rates ([https://code.metoffice.gov.uk/trac/ukca/browser/main/trunk/src/science/photolysis/stratospheric/photolib/calcjs_mod.F90#L224 calcjs_mod]) and prescribed O3 ,temperature ([https://code.metoffice.gov.uk/trac/ukca/browser/main/trunk/src/science/photolysis/stratospheric/photolib/inijtab_mod.F90#L253 initjtab_mod]). The read methods do not seem to have ever been used in the UM as required values are required hardwired in respective modules.<br/>Necessary for Photolysis API and LFric porting || [https://code.metoffice.gov.uk/trac/ukca/ticket/173 UKCA:#173] || || '''ONGOING''' || || Vivien Bright
  +
|}
  +
  +
== Table of code still desired but which is not tested ==
  +
  +
{| class="wikitable" border = "1px"
  +
!style="text-align:top;|#
  +
!style="text-align:top;|Description
  +
!style="text-align:top;|Ticket
  +
!style="text-align:top;|Remarks
  +
!style="text-align:top;|Owner
  +
|-
  +
| 1 || Use of tropospheric (2D) look-up table photolysis || || Still useful to compare against FastJX. May be used for a "fast" configuration. ||
  +
|-
  +
| 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. || Luke Abraham
  +
|-
  +
| 4 || Seven mode with dust <br/> (i_mode_setup==8) || [https://code.metoffice.gov.uk/trac/um/ticket/5957 um:#5957] || LFRic will use i_mode_setup=8 <br/> Tested from vn12.0 || Tested from vn12.0
  +
|-
  +
| 5 || RADAER Maxwell-Garnett <br/> (l_ukca_tune_bc=.true.) || [https://code.metoffice.gov.uk/trac/um/ticket/5957 um:#5957] || From [https://code.metoffice.gov.uk/trac/um/ticket/5342 um:#5342], this will be prefered option in future <br/> Tested from vn12.0 || Tested from vn12.0
 
|-
 
|-
| 17 || Remove temporary logical l_fix_ukca_h2dd_x <br/> Introduced at [https://code.metoffice.gov.uk/trac/um/ticket/4157 UM:#4157] || [https://code.metoffice.gov.uk/trac/um/ticket/4245 UM:#4245] || Approval being sought for GA series (likely GA9) <br/> [https://code.metoffice.gov.uk/trac/gmed/ticket/410 GMED:#410] || '''PROPOSED''' || Medium-term || Alan J Hewitt ||
 
 
|}
 
|}

Latest revision as of 12:45, 14 May 2024

This page is a starting point for discussion on code which is not being used and can be considered for removal. At this stage no decisions about any of these pieces of code have been made but in time it will become a place to record when things are planned to be deleted and then when they are deleted.

Table of code proposed for deletion

Status should be "proposed" until agreed for deletion at a code management group meeting. However, you are encouraged to open a ticket with the milestone set to 'HOPEFULLY' as soon as you propose something here. If the proposal is rejected the ticket can be closed. Code that exists but it no longer used can be set to depreciated.

NOTE: ALL GLOMAP CHANGES SHOULD BE DISCUSSED WITH LEEDS BEFORE PROCEEDING

# Description Ticket Remarks Status Timeframe Owner
1 Old emissions code (that which uses ancil files) UM:#142 None Complete
2 Old dry deposition scheme UM:#2356 None DO NOT REMOVE It is still desirable to keep this scheme at present Luke Abraham
3 ukca_volume_mode.F90
quick method for calculating wet volume is not used.
UM:#2373 iwvolmethod removed. Complete Alan J Hewitt
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 None None PROPOSED
Medium-term
7 Retire l_conv_tke (Updraft velocity)
Introduced at UM:#1645
UM:#3668 Approval being sought for GA series (likely GA8)
GA7.0 GMED:#197 and GA7.1 GMED:#286
Ticket passed to Ian Boutle
PROPOSED Medium-term 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 rose stem files - will be removed in UM:#3985.
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.
DEPRECATED Long-term
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 UM:#4259 The 13 PFT option has been adopted for UKESM1.
The 9 PFT option is possibly not being used at all.
Proposed in June 2018.
Update - 9 PFT is not required.
This could be retired at the
same time that another
PFT option is added.
DEPRICATED Long-term Alan J Hewitt
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 by Colin Johnson
UM:#3490 Approval being sought for GA series (likely GA9)
GMED:#426
PROPOSED Medium-term Jane Mulcahy
14 Remove temporary logical l_fix_nh4no3_equilibrium
Introduced at UM:#646
UM:#4382 l_fix_nh4no3_equilibrium removed Complete Pedro Molina-Jimenez
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 Joana Rodrigues
(Alan J Hewitt)
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
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 Callum Dinnet
(Alan J Hewitt)
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 Helena Reid
(Alan J Hewitt)
19 Remove MODULEs/SUBROUTINEs/FUNCTIONs
within UKCA not called within the UM:

SUBROUTINE asad_dealloc_chemdiag
FUNCTION cd_findspeciesloc
SUBROUTINE asad_lin_diagnostic
FUNCTION prcount
MODULE asad_inhet_mod and SUBROUTINE asad_inhet
MODULE asad_inphot_mod and SUBROUTINE asad_inphot
SUBROUTINE asad_mod_final
MODULE asad_ycn_mod and SUBROUTINE asad_ycn
SUBROUTINE activmkpdf
MODULE ukca_fixedsb_mod and SUBROUTINE ukca_fixedsb
SUBROUTINE deallocate_radaer_struct
SUBROUTINE ukca_relax_ozone
UM:#4512 Not called within UM
Need to decide whether any should be kept

vn11.3_remove_redundant_UKCA_code

Dont remove photolib/quanto1d_mod.F90 - leave photolysis schemes alone
Remove asad_emissn_mod in separate ticket
Complete Alan J Hewitt
20 Remove MODULEs/SUBROUTINEs/FUNCTIONs
within UKCA not called within the UM:

MODULE asad_emissn_mod and SUBROUTINE asad_emissn
MODULE asad_inemit_mod and SUBROUTINE asad_inemit
UM:#4827 Requires removing additional redundant emission code from ukca_chem_master.F90 vn11.3_remove_asad_emissn_mod Complete Alan J Hewitt
21 Remove code behind L_use_stratclim from ukca_fastjx_mod
Introduced prior to MOSRS
UM:#5488 This could either be properly included via a namelist or removed from the UM Complete
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
Complete Medium-term Charlotte Norris
23 Remove unused local and argument variables
This can be repeated at vn11.6
UM:#4832 Details on how to find these in UM:#4832 Complete Alan J Hewitt
24 Remove ability to use of Cambridge 2D model data from ukca_stratf.F90 PROPOSED
25 Change from using ukca_chem_master.F90 to a file-read for the chemical mechanism 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. PROPOSED Short-term Luke Abraham
26 highorder_scheme May need to test this in rose-stem PROPOSED Mohit Dalvi
27 Stratospheric photolysis: Remove code for reading of JTABLE rates (calcjs_mod) and prescribed O3 ,temperature (initjtab_mod). The read methods do not seem to have ever been used in the UM as required values are required hardwired in respective modules.
Necessary for Photolysis API and LFric porting
UKCA:#173 ONGOING Vivien Bright

Table of code still desired but which is not tested

# 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.
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. Luke Abraham
4 Seven mode with dust
(i_mode_setup==8)
um:#5957 LFRic will use i_mode_setup=8
Tested from vn12.0
Tested from vn12.0
5 RADAER Maxwell-Garnett
(l_ukca_tune_bc=.true.)
um:#5957 From um:#5342, this will be prefered option in future
Tested from vn12.0
Tested from vn12.0