Apply land use changes correctly (and with extra checking)

[MartinDix]

Fixes problems described in #22.

[blimlim]

Changes look good to me – looks like a lot of detective work. I just added some questions for clarifying a couple of the changes.

One other question that came up while reviewing: update_landuse.py currently has

landuse = xarray.open_dataset('work/atmosphere/INPUT/cableCMIP6_LC_1850-2015.nc').fraction

Will this script be reused for other configurations? I was wondering whether we should remove the hard coded filepath if so.

[MartinDix]

Changes look good to me – looks like a lot of detective work. I just added some questions for clarifying a couple of the changes.

One other question that came up while reviewing: update_landuse.py currently has

landuse = xarray.open_dataset('work/atmosphere/INPUT/cableCMIP6_LC_1850-2015.nc').fraction

Will this script be reused for other configurations? I was wondering whether we should remove the hard coded filepath if so.

Different land use files would be used for future scenarios. Moved the filename to the driver script so it's passed to the python script as an argument.