The datasets available here are those used for sensitivity experiments in the paper by Sigmond et al. (2023):
"Improvements in the Canadian Earth System Model (CanESM) through systematic model analysis: CanESM5.0 and CanESM5.1"
https://doi.org/10.5194/gmd-2023-52

All datasets are provided as netcdf files that are readable by standard tools (e.g., the xarray python package).


* Dust (Section 5.1) *

The dust/ directory contains files of dust optical depth used in Figure 9.
CanAM5.1-refBGF corresponds to filenames *oldem-oldrad-bulk*.nc
CanAM5.1-newBGF corresponds to filenames *newem-oldrad-bulk*.nc


* North Atlantic sea ice (Section 5.3.1) *

The sea_ice/ directory contains monthly sea ice concentration (siconc) data used in Figure 16.
Subdirectory names correpond to each model variant, as used in the following plots:
    OMIP: Fig. 16a
    OMIP-CanESM5: Fig. 16b
    Expt2_historical: Fig. 16c
    Expt1_historical: Fig. 16d
    obs_runoff_piControl: Fig. 16e
    wind_nudging_historical: Fig. 16f


* Winter cold bias above sea ice (Section 5.3.2) *

The sea_ice/ directory contains monthly surface temperature (tas) data used in Figure A13.
Subdirectory names correpond to each model variant, as used in the following plots:
    Expt4_piControl: Fig. A13a,b
    Expt3_piControl: Fig. A13c,d
    Expt2_piControl: Fig. A13e,f
    Expt1_piControl: Fig. A13g,h
The control case for Figure A13 (with respect to which anomalies are plotted) is the dataset:
    CMIP6.CMIP.CCCma.CanESM5.piControl.r1i1p2f1.Amon.tas.gn.v20190429
available from the ESGF.


* Stratospheric circulation (Section 5.3.3) *

The stratosphere/ directory contains the CanESM5-G and CanAM5-G[1,2,3] model variants indicated in Table 4.
Subdirectory names correspond to the model variant labels used in Figures 18 and 19.
Each subdirectory contains zonal-mean zonal wind data for the 5 ensemble members plotted for that model variant.


* Land surface temperatures and albedo (Section 5.3.4) * 

The land/ directory contains the CLASSIC output used in Figure 20c-h.
Subdirectories contain the output from different CLASSIC experiments:
    transient_CanESM5: CLASSIC forced offline with CanESM5-historical
    transient_CRUJRAv2: CLASSIC forced offline with CRUJRAv2
    transient_GSWP3-W5E5: CLASSIC forced offline with GSWP3-W5E5
For each experiment the two plotted variables are provided in these files:
    Surface albedo: albs_monthly.nc
    Snow water equivalent: snw_monthly.nc
For CanESM5.0, surface albedo (Figure 20a) was computed as the ratio of upwelling and downwelling shortwave radiation using these files:
    rsus_Amon_CanESM5_historical_r1i1p1f1_gn_185001-201412.nc 
    rsds_Amon_CanESM5_historical_r1i1p1f1_gn_185001-201412.nc
which are available from the ESGF (e.g., https://esgf-node.llnl.gov/search/cmip6/). 
CanESM5.0 snow water equivalent (Figure 20b) is available from ESGF:
    snw_LImon_CanESM5_historical_r1i1p1f1_gn_185001-201412.nc