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Créée par
Roberge, François, dernière mise à jour par Winger, Katja le déc. 23, 2025
2 min de lecture
CaLDAS
Period : 201701 - 202103
Horizontal grid : North America (regional model)
Spatial resolution : ~2.5 km
Temporal resolution : 6-hourly
Data source : CMC/RPN
Location (RPN) : ~archive/CMC_Data/operation.analyses.caldas.nat.final.diag
Fields :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| SD | Snow Depth | cm |
| DN | Snow Density | kg/m3 |
CaPA (native grid)
Period : 201103 - 202412
Horizontal grid : North America (regional model)
Spatial resolution : ~10 km
Temporal resolution : 6-hourly
Data source : CMC/RPN
Location (RPN) : ~data/Validation/CaPA/CaPA_06h_Vincent
Fields :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| PR | Total precipitation | m/s |
| CFIA | Confidence Index of Analysis CAPA | nil |
CaPA (PS grid)
Period : 200201 - 202102
Horizontal grid : North America (regional model)
Spacial resolution : ~10 km
Temporal resolution : 6-hourly
Data source : CMC/RPN
Location (NetCDF) :~archive/ANALYSES/CaPA
Files were downloaded from : https://collaboration.cmc.ec.gc.ca/science/outgoing/capa.grib/
ncl_convert2nc was used to convert them from grib2 to netcdf.
Note : Please note that those files are more easy to manipulate using cdo due to some parameters not being CF compliant.
Fields :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| APCP_P8_L1_GST0_acc-6h | Total precipitation | m/6hour |
| CFRZR_P8_L1_GST0_avg-6h | Categorical freezing rain (yes=1; no=0) | non-dim |
CaPA_fine
Periods : 201803 - 202108
Horizontal grid : North America (regional model)
Spacial resolution : 2.5 km
Temporal resolution : 6-hourly
Data source : CMC/RPN (downloaded through CaSPAr (Mai et al., 2020))
Location (RPN) : ~data/Validation/CaPA_fine
Location (NetCDF) : ~archive/CMC_Data/CaPA_fine
Fields :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| PR | Total precipitation | m/s (RPN) |
Attention : For the netCDF format, the unit is m/6h.
Notes:
1) The grid of the data in netCDF format is changing with time:
- 2018030300 - 2021120106 : 2540x1290 points, no frame (grid 1)
- 2021120112 - 2024060800 : 2560x1310 points, 11 point frame (grid 2)
- 2024060806 - 2025042918 : 2540x1290 points, no frame (grid 1)
2) The data in RPN format have been cut to a common grid of 2538x1288 points.
ECMWF
Period : 199609 - 200807
Horizontal grid : 181x91 (2.0 deg) L grid (CMC/RPN)
Vertical info : 18 pressure levels from 10 hPa to 1000 hPa
Data source : Colin Jones, SMHI
Driving data : Atmospheric driving data on pressure levels
SST & sea ice
Location : marvin:/local/sata1/data/ECMWF
Canadian Meteorological Centre (CMC) Daily Snow Depth Analysis Data
The data and documentation can be accessed from here: http://nsidc.org/data/nsidc-0447. The dataset contains snow depth and snow water equivalent variables.