# CABLE4 planning: meeting notes

**URL:** https://forum.access-hive.org.au/t/cable4-planning-meeting-notes/1751
**Category:** CABLE
**Tags:** cable4-planning
**Created:** [24 January 2024 21:48 UTC](https://forum.access-hive.org.au/t/cable4-planning-meeting-notes/1751 "2024-01-24T21:48:55Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![RachelLaw](https://avatars.discourse-cdn.com/v4/letter/r/da6949/32.png) [@RachelLaw](https://forum.access-hive.org.au/u/RachelLaw)
#### Post date: [1 February 2024 01:06 UTC](https://forum.access-hive.org.au/t/cable4-planning-meeting-notes/1751/5 "2024-02-01T01:06:42Z")

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**February 22nd 2024**

**Previous actions status**

- @Juergen’s Crops presentation uploaded here: [CABLE-POP runs - global parallel setup (without MPI) and sensitivity tests - Land Surface / CABLE - ACCESS Hive Community Forum (access-hive.org.au)](https://forum.access-hive.org.au/t/cable-pop-runs-global-parallel-setup-without-mpi-and-sensitivity-tests/1698/8)

**For discussion**

- GitHub Projects for organising tasks @clairecarouge
- Grass types in POPLUC. C3/C4 set at spin-up? Then crop/pasture/range fraction tracked within the grass tile? How? Fraction just used for harvest?
- @RachelLaw slides of POPLUC variables (forest/grass) change over time with some comparison to ACCESS. Slides are uploaded here: [Managing CABLE-POP and ACCESS differences in vegetation distribution - Land Surface / CABLE - ACCESS Hive Community Forum (access-hive.org.au)](https://forum.access-hive.org.au/t/managing-cable-pop-and-access-differences-in-vegetation-distribution/1702/2)

**Notes**

- C3/C4 split at spin-up time is limitation. Do we want to let this change over time as climate changes? Is there a need for mix of c3/c4 grasses in a grid-cell. Is the c4 fraction capability in CABLE still functional? Better to have the functionality to carry different grass/crop types in a grid-cell. Will have deal with how to manage transition and what is happening in the soil under each type within ‘grass’.

**Action**

- Discussion on design for e.g. multiple types within grass @inh599 @Juergen @bens
- @RachelLaw to plot some ACCESS/POPLUC comparisons at individual locations over full timeseries.
- POPLUC output to be checked against input. Crop appears not to be changing.

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