It is useful to run CABLE-POP offline at ACCESS (N96) resolution to
- more easily compare CABLE-POP performance to ACCESS performance
- as a potential contribution to spinning up ACCESS land / land carbon
- to test sensitivity to parameters or other inputs / ancillaries
- CMIP7 is expected to include offline land-only simulations.
Two cases potentially useful:
- Re-grid of Trendy forcing to ACCESS resolution for direct comparison with current CABLE-POP submission to Trendy.
- ACCESS meteorology
Required tasks / questions to address
- Scope what is required to change resolution
a. Meteorology forcing files
b. Other input files
- CABLE-POP currently run with daily data and a weather generator. Is it worth testing sensitivity to this vs more frequent data?
- Is the ACCESS resolution dataset previously prepared useful? May need to check provenance. Also note this is interpolated to give higher frequency data.
- Re-format ACCESS meteorology to be suitable for use by CABLE-POP (or re-write CABLE-POP to read ACCESS netcdf output). Does ACCESS need to be re-run to give data at appropriate temporal frequency? Initial aim would be 10-20 years from pre-industrial simulation to be used for spin-up.
- Compare CABLE-POP internally generated vegetation distribution for 1750/1850 with ACCESS pre-industrial.
- Test whether CABLE-POP can run with vegetation distribution derived from ACCESS (but reduced to single tree type, single grass type)
- Convert LUH2 for POP transition files to ACCESS resolution.
NOTE: There is a half-grid shift between the N96 grid used in ACCESS-ESM1.5 compared with later versions (ACCESS-CM2+) and hence the land-sea mask is different. Initial work on CABLE-POP at ACCESS resolution will need to be on the ACCESS-ESM1.5 grid but new files will be required for working with ACCESS-AM3/CM3/ESM3.