CERA-20C
CERA-20C (Laloyaux et al., 2016) est une réanalyse couplée produite par ECMWF couvrant le 20e siècle (1901-2010). Elle est basée sur le système d'assimilation CERA qui assimile seulement les observations de pressions de surface et de vents de surface sur l'océan ainsi que les profils de salinités et de température de l'océan. Bien qu'étant une analyse ensembliste à la base, seul le membre contrôle est disponible dans la présente base de données.
Period : 190101 - 201012
Horizontal grid : 288x145 (1.25 deg) Global Lat/lon
Vertical info : 37 pressure levels from 1 hPa to 1000 hPa
Data source : https://www.ecmwf.int/en/forecasts/datasets/reanalysis-datasets/cera-20c
Documentation : https://www.ecmwf.int/en/newsletter/150/meteorology/cera-20c-earth-system-approach-climate-reanalysis
All files are in netcdf4 format.
3D Fields (3-hourly)
| GZ | Geopotential [m**2 s**-2] | 3-hourly | analysis |
| HR | Relative humidity [%] | 3-hourly | analysis |
| TT | Temperature [K] | 3-hourly | analysis |
| UU | U component of wind [m s**-1] | 3-hourly | analysis |
| VV | U component of wind [m s**-1] | 3-hourly | analysis |
Location : ~archive/REANALYSES/cera20c/3h
2D Fields (3-hourly)
| MSLP | Mean sea level pressure [Pa] | 3-hourly | analysis |
| SIC | Sea-ice cover [0-1] | 3-hourly | analysis |
| SST | Sea surface temperature [K] | 3-hourly | analysis |
| TAS | 2 metre temperature [K] | 3-hourly | analysis |
Location : ~archive/REANALYSES/cera20c/3h
2D Fields (daily)
| MSLP | Mean sea level pressure [Pa] | daily | analysis |
| PR | Total precipitation [m] | daily | forecast |
| SIC | Sea-ice cover [0-1] | daily | analysis |
| SST | Sea surface temperature [K] | daily | analysis |
| SUND | Sunshine duration [s] | daily | analysis |
| TAS | 2 metre temperature [K] | daily | analysis |
Location : ~archive/REANALYSES/cera20c/daily
ERA40
Period : 195709 - 200208
Horizontal grid : 145x73 (2.5 deg) B grid (CMC/RPN)
Vertical info : 23 pressure levels from 1 hPa to 1000 hPa
Data source : http://data.ecmwf.int/data/d/era40/
Documentation : http://www.ecmwf.int/research/era/Products/Archive_Plan/Archive_plan_toc.html
Location : ~data/Validation/ERA40
Driving data : Atmospheric driving data on pressure levels
Other 6-hourly and monthly mean fields :
on 23 pressure levels (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 600, 700, 775, 850, 925, 1000 hPa) :
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| TT | Air temperature | C |
| GZ | Geopotential | gdm |
| HU | Specific humidity | kg/kg |
| HR | Relative humidity | % |
| UU | U wind component | knots |
| VV | V wind component | knots |
| WP | vertical velocity | Pa/s |
| DD | Divergence | 1/s |
| QR | Relative vorticity | 1/s |
| PVOR | Potential vorticity | |
| OZ | Ozone gas | ppb |
on model levels :
| ACC | NAME | LEVEL | DESCRIPTION | UNIT |
|---|---|---|---|---|
| GL | Sea-ice cover | 0-1 | ||
| I0 | 1-4 | Soil temperature level 1-4 | K | |
| I1 | 1-4 | Volumetric soil water layer 1-4 | m3/m3 | |
| I5 | SWE, Snow depth (m of equivalent water) SNOMA(I5)=1000*SNORO(7S)*SD | m | ||
| I7 | 1-4 | Ice surface temperature layer 1-4 | K | |
| A | O7 | Snow evaporation (m of water) | m/s | |
| A | SMLT | Snowmelt (m of water) | m/s | |
| CWTR | Total column water (liquid+Ice+Vapour) (kg/m**2) | kg/m2 | ||
| PW | Total column water vapour (kg/m**2) | kg/m2 | ||
| A | AE | Stratiform precipitation (Large-scale precipitation) | m/s | |
| A | PC | Convective precipitation | m/s | |
| A | SN | Snowfall (convective + stratiform) | m/s | |
| A | AH | Surface sensible heat flux | W/m2 | |
| A | AV | Surface latent heat flux | W/m2 | |
| PN | Mean sea level pressure | hPa | ||
| H | Boundary layer height | m | ||
| NT | Total cloud cover (instantaneous) | 0-1 | ||
| UU | 1sg | 10 metre U wind component | knots | |
| VV | 1sg | 10 metre V wind component | knots | |
| TT | 1sg | 2 metre temperature | C | |
| TD | 1sg | 2 metre dewpoint temperature | C | |
| A | N4 | Surface solar radiation downwards = AS/(1-AL(5)) | W/m2 | |
| A | AD | Surface thermal radiation downwards | W/m2 | |
| A | AS | Surface solar radiation | W/m2 | |
| A | AI | Surface thermal radiation | W/m2 | |
| A | TOAS | Top solar radiation = (AB-AU) | W/m2 | |
| A | AR | Top thermal radiation | W/m2 | |
| A | S7 | East-West surface stress | (N/m2) | |
| A | S8 | North-South surface stress | (N/m2) | |
| A | EVAP | Evaporation (m of water) | m/s | |
| NB | Low cloud cover | 0-1 | ||
| NM | Medium cloud cover | 0-1 | ||
| NH | High cloud cover | 0-1 | ||
| A | UG | Latitudinal component of gravity wave stress | m/s3 | |
| A | V6 | Meridional component of gravity wave stress | m/s3 | |
| A | N0 | Runoff (m of water) | m/s | |
| O3 | Total column ozone (kg/m**2) | kg/m2 | ||
| A | SN_C | Top net solar radiation, clear sky | W/m2 | |
| A | LN_C | Top net thermal radiation, clear sky | W/m2 | |
| A | SN_C | Surface net solar radiation, clear sky | W/m2 | |
| A | LN_C | Surface net thermal radiation, clear sky | W/m2 | |
| WV_H | Significant wave height | |||
| WV_D | Mean wave direction | |||
| WV_P | Mean wave period | |||
| TN | Temperature of snow layer | K |
ERA-Interim
ERA-Interim, 2.0 degree
Period : 198901 - 200901
Horizontal grid : 181x91 (2.0 deg) B grid (CMC/RPN)
Vertical info : 22 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 : ~data/Validation/ERA-Interim
ERA-Interim, 1.5 degree
Period : 197901 - 201212
Horizontal grid : 241x121 (1.5 deg) B grid (CMC/RPN)
Vertical info : 34 pressure levels from 5 hPa to 1000 hPa
Data source : Michel Giguere, Ouranos
Driving data : 6-houtly atmospheric driving data on pressure levels (TT, HU, UU, VV, GZ, P0)
6-houtly SST & sea ice
CLASS offline driving data : 3- and 6-houly : PR, AD, N4
6-houly : TT, UV, HU, P0
Data source : Camille Garnaud, UQAM
Location : ~data/Validation/ERA-Interim_1.5
ERA-Interim, 0.75 degree
Period : 197901 - 201412
Horizontal grid : 481x241 (0.75 deg) B grid (CMC/RPN)
NOTE: Seems that there are some "problems" with the ECMWF sea ice cover fraction:
2003.10.22 06Z – 2003.10.23 00Z (Overestimated ice Baffin Bay, Greenland Sea)
2006.10.29 12Z – 2006.10.30 06Z (Laplev/Kara Sea hole)
2006.12.01 12Z – 2006.12.02 06Z (Chukchi/Beaufort Sea hole)
2008.03.08 12Z – 2008.03.09 06Z (Underestimate Labrador Sea, Gulf of St. Lawrence)
2008.04.03 12Z – 2008.04.04 06Z (Chukchi, Hudson/Baffin Bay holes)
2012.07.11 06Z – 2012.07.14 00Z (Ice-free North Pole)
2012.07.14 06Z – 2012.07.15 00Z (North of Greenland hole)
2013.01.20 06Z – 18Z (Ice-free Bering Strait/Sea)
Validation data :
Location: ~data/Validation/ERA-Interim_0.75
CRCM5 driving data : 6-hourly atmospheric driving data on pressure levels (TT, HU, UU, VV, GZ, P0)
6-hourly SST & sea ice
Location : ~data/Driving_data/Pilots/ERA-Interim_0.75
Data source : Michel Giguere, Ouranos and ECMWF
CLASS offline driving data : 3-hourly forecast : TT, UV, HU, P0, PR, AD, N4
6-hourly analysis : TT, UV, HU, P0 + 6-hourly forecast : PR, AD, N4
Location : ~data/Driving_data/Offline/ERA-Interim_0.75
Data source : http://apps.ecmwf.int/datasets
6-hourly analysis, 2-D
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| TT | 2m temperature | oC |
| TD | 2m dew point temperature | oC |
| HU | 2m specific humidity | kg/kg |
| P0 | Surface pressure | hPa |
| UU | 10m U wind component | knots |
| VV | 10m V wind component | knots |
| UV | 10m wind speed | knots |
Location : ~data/Driving_data/Offline/ERA-Interim_0.75/6h_Analysis
Data source : http://apps.ecmwf.int/datasets
3-hourly forecast, 2-D
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| TT | 2m temperature | oC |
| TD | 2m dew pont temperature | oC |
| HU | 2m specific humidity | kg/kg |
| P0 | Surface pressure | hPa |
| UU | 10m U wind component | knots |
| VV | 10m V wind component | knots |
| UV | 10m wind speed | knots |
| AS | Sensible heatflux | W/m2 |
| AV | Latent heatflux | W/m2 |
| AD | Surface thermal radiation downwards | W/m2 |
| N4 | Surface solar radiation downwards | W/m2 |
| AI | Surface thermal radiation | W/m2 |
| AS | Surface solar radiation | W/m2 |
| PR | Total precipitation | m/s |
Location : ~data/Driving_data/Offline/ERA-Interim_0.75/3h_Forecast
Data source : http://apps.ecmwf.int/datasets
3-hourly forecast, 2-D NetCDF (only year 2019 for now)
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| tp | Total precipitation | m |
Location : ~archive/REANALYSES/ERA-Interim/3h
Data source : http://apps.ecmwf.int/datasets
2-D monthly mean fields
Period : 197901 - 201412
Horizontal grid : 481x241 (0.75 deg) B grid (CMC/RPN)
Data source : http://apps.ecmwf.int/datasets/data/interim-full-moda/
Location : ~data/Validation/ERA-Interim_0.75/Monthly_means
ERA5
Period : 197901 to current (new months added upon request)
Horizontal grid : 0.25° global B grid (CMC/RPN) Temporal resolution : 1-, 3-hourly resp. daily (for Tmin/Tmax/SST/SIC)
ERA5 (Hersbach et al., 2019) est la dernière version des réanalyses de ECMWF. Plusieurs sources d’informations sont assimillées dans le cadre de la réanalyse ERA5 comme les observations de stations de surface, les observations satellitaires, les METAR, etc. Les données ont été téléchargés à partir du Climate Data Store de Copernicus (C3S, 2017)
2-D fields (RPN only)
| TT | 2 metre temperature [°C] | 1-hourly | analysis |
| T5 | 2m min temperature [°K] | daily | derived from 1h 2m TT analysis |
| T9 | 2m max temperature [°K] | daily | derived from 1h TT 2m analysis |
| TD | 2 metre dewpoint temperature [°C] | 1-hourly | analysis |
| PC | Convective precipitation [m/s] | 1-hourly | forecast |
| PR | Total precipitation [m/s] | 1-hourly | forecast |
| UU | 10 metre U wind component [knots] | 1-hourly | analysis |
| VV | 10 metre V wind component [knots] | 1-hourly | analysis |
| EVAP | Evaporation [m/s of water equivalent] | 1-hourly | forecast |
| DN | Snow density [kg m**-3] | 1-hourly | analysis |
| SWE | Snow water equivalent [m of water equivalent] | 1-hourly | analysis |
| SN | Snowfall [m/s of water equivalent] | 1-hourly | forecast |
| J8 | Skin temperature [K] | 1-hourly | analysis |
| PN | Mean sea level pressure [hPa] | 1-hourly | analysis |
| P0 | Surface pressure [hPa] | 1-hourly | analysis |
| ro | Runoff [m] | 1-hourly | forecast |
| TRAF | Surface runoff [mm/s] | 1-hourly | forecast |
| TDRA | Sub-surface runoff [mm/s] | 1-hourly | forecast |
| AV | Surface latent heat flux [W/m**2] | 1-hourly | forecast |
| AH | Surface sensible heat flux [W/m**2] | 1-hourly | forecast |
| AS | Surface net solar radiation [W/m**2] | 1-hourly | forecast |
| AI | Surface net thermal radiation [W/m**2] | 1-hourly | forecast |
| ABE | Available buoyant energy [J/kg] | 1-hourly | analysis |
| IH | Total column water vapour [kg/m**2] | 1-hourly | analysis |
| GZ | Geopotential at 500 hPa [dm] | 1-hourly | analysis |
| TM | Sea surface temperature [K] | daily | analysis |
| LG | Sea ice area fraction [0-1] | daily | analysis |
Note: Fields and units are given for RPN format. For fields and units in NetCDF format check table below!
Location: RPN format : ~data/ReAnalysis/ERA5/2D_Fields
2-D fields (NetCDF only)
Fields are in monthly files with one variable per file. Files are compressed with a deflate level of 6 and chunked to the grid dimension. Please note that as 12-07-2021 all months up to 202104 are the final version of ERA5. The months of 202105, 202106 and 202107 were also downloaded, but they are from the temporary version of ERA5.
Please note that even if the output of sst and siconc is available hourly from CDS API, it only change one time a day, so it was downloaded only at 12Z.
| t2m | 2 metre temperature [K] | 1-hourly | analysis |
| d2m | 2 metre dewpoint temperature [K] | 1-hourly | analysis |
| q2m | 2 metre specific humidity1 [kg/kg] | 1-hourly | analysis |
| cp | Convective precipitation [m] | 1-hourly | forecast |
| tp | Total precipitation [m] | 1-hourly | forecast |
| u10 | 10 metre U wind component [m/s] | 1-hourly | analysis |
| v10 | 10 metre V wind component [m/s] | 1-hourly | analysis |
| e | Evaporation [m of water equivalent] | 1-hourly | forecast |
| rsn | Snow density [kg m**-3] | 1-hourly | analysis |
| sd | Snow depth (snow water equivalent) [m of water equivalent] | 1-hourly | analysis |
| sf | Snowfall [m of water equivalent] | 1-hourly | forecast |
| skt | Skin temperature [K] | 1-hourly | analysis |
| msl | Mean sea level pressure [Pa] | 1-hourly | analysis |
| sp | Surface pressure [Pa] | 1-hourly | analysis |
| ro | Runoff [m] | 1-hourly | forecast |
| sro | Surface runoff [m] | 1-hourly | forecast |
| ssro | Sub-surface runoff [m] | 1-hourly | forecast |
| slhf | Surface latent heat flux [J m**-2] | 1-hourly | forecast |
| sshf | Surface sensible heat flux [J m**-2] | 1-hourly | forecast |
| ssr | Surface net solar radiation [J m**-2] | 1-hourly | forecast |
| str | Surface net thermal radiation [J m**-2] | 1-hourly | forecast |
| cape | Convective available potential energy [J kg**-1] | 1-hourly | analysis |
| tcc | Total cloud cover [0-1] | 1-hourly | analysis |
| tcwv | Total column water vapour [kg m**-2] | 1-hourly | analysis |
| w_500 | Vertical velocity at 500 hPa [Pa s**-1] | 1-hourly | analysis |
| z_500 | Geopotential at 500 hPa [m2/s2] | 1-hourly | analysis |
| sst | Sea surface temperature [K] | daily | analysis |
| siconc | Sea ice area fraction [0-1] | daily | analysis |
1q2m was computed from d2m and sp with Teten's formula using equations 7.4 and 7.5 from Part IV, Physical processes section (Chapter 7, section 7.2.1b) in the documentation of the IFS for CY41R2
Location:
UQAM:
NetCDF format: ~archive/REANALYSES/ERA5
SST & sea ice fraction (RPN only)
Even though these fields are available 1-hourly, they change over ocean only once a day between 22Z and 23Z. Therefore we only have these fields once per day at 12Z.
| TM | sea surface temperature [°K] |
| GL | sea ice fraction [0-1] |
Note: Units are given for RPN format. For units in NetCDF format check inside files!
Location:
UQAM:
RPN format : ~data/ReAnalysis/ERA5/SST_SeaIce
Beluga:
RPN format : ~winger/projects/rrg-laprise/GEM_Data/SST_SeaIce_degK/ERA5
3-D fields (RPN only)
1-hourly from 1979 to current. We keep adding recent months upon request.
The following fields are available on these pressure levels:
1000, 975, 950, 925, 900, 875, 850, 825, 800, 775, 750, 700, 650, 600, 550, 500, 450, 400, 350, 300, 250, 225, 200, 175, 150, 125, 100, 70, 50, 30, 20, 10, 7, 5, 3, 2, 1
| TT | air temperature [°C] |
| HU | specific humidity [0-1] |
| GZ | geopotential [dm] |
| UU | u-wind [knots] |
| VV | v-wind [knots] |
Note: Units are given for RPN format. For units in NetCDF format check inside files!
Location:
UQAM:
RPN format : ~data/ReAnalysis/ERA5/Pilots
Beluga:
RPN format : ~/projects/rrg-laprise/GEM_Data/Driving_data/ERA5
ERA5 Preliminary backextension 1950-1978
Period : 195001 to 197812
Horizontal grid : 0.25° global Temporal resolution : 1-hourly for all variables except sst and siconc which are daily
ERA5 (Hersbach et al., 2019) est la dernière version des réanalyses de ECMWF. Plusieurs sources d’informations sont assimillées dans le cadre de la réanalyse ERA5 comme les observations de stations de surface, les observations satellitaires, les METAR, etc. Les données ont été téléchargés à partir du Climate Data Store de Copernicus (C3S, 2017). L'extension 1950-1978 est considérée comme étant préliminaire dû à un problème avec la vitesse des vents dans les cyclones tropicaux. L'utilisation de ces données pour l'étude des cyclones tropicaux n'est donc pas appropriée.
2-D fields (NetCDF only)
| t2m | 2 metre temperature [K] | 1-hourly | analysis |
| d2m | 2 metre dewpoint temperature [K] | 1-hourly | analysis |
| cp | Convective precipitation [m] | 1-hourly | forecast |
| tp | Total precipitation [m] | 1-hourly | forecast |
| u10 | 10 metre U wind component [m/s] | 1-hourly | analysis |
| v10 | 10 metre V wind component [m/s] | 1-hourly | analysis |
| msl | Mean sea level pressure [Pa] | 1-hourly | analysis |
| sd | snow depth (snow water equivalent) [m of water equivalent] | 1-hourly | analysis |
| sf | Snowfall [m of water equivalent] | 1-hourly | forecast |
| skt | Skin temperature [K] | 1-hourly | analysis |
| ro | Runoff [m] | 1-hourly | forecast |
| sro | Surface runoff [m] | 1-hourly | forecast |
| ssro | Sub-surface runoff [m] | 1-hourly | forecast |
| slhf | Surface latent heat flux [J m**-2] | 1-hourly | forecast |
| sshf | Surface sensible heat flux [J m**-2] | 1-hourly | forecast |
| ssr | Surface net solar radiation [J m**-2] | 1-hourly | forecast |
| str | Surface net thermal radiation [J m**-2] | 1-hourly | forecast |
| cape | Convective available potential energy [J kg**-1] | 1-hourly | analysis |
| z | Geopotential at 500 hPa (z_500) [m2/s2] | 1-hourly | analysis |
| sst | Sea surface temperature [K] | daily | analysis |
| siconc | Sea ice area fraction [0-1] | daily | analysis |
Location:
UQAM:
NetCDF format: ~archive/REANALYSES/ERA5_prel_back_extension
ERA5-Land
ERA5-Land (Muñoz Sabater, 2019) est une simulation hors-ligne du modèle de surface à 0.1° qui est forcé par les réanalyses ERA5. Il n’y a pas d’assimilation de données. Toutefois, les observations atmosphériques s’y retrouvent indirectement via le forçage. Ces données peuvent être très utiles dans des endroits où il y a peu d’observations au niveau de la surface. Les données ont été téléchargés à partir du Climate Data Store de Copernicus (C3S, 2019)
Period : 198101-202104
Spacial coverage : global
Spacial resolution : 0.1°
Temporal resolution : 1-hourly
2-D fields (NetCDF only)
| t2m | 2 metre temperature [K] | 1-hourly | forecast |
| d2m | 2 metre dewpoint temperature [K] | 1-hourly | forecast |
| tp | Total precipitation1 [m] | 1-hourly | forecast |
| tp_deaccum | Deaccumulated total precipitation2 [mm] | 1-hourly | forecast |
| u10 | 10 metre U wind component [m/s] | 1-hourly | forecast |
| v10 | 10 metre V wind component [m/s] | 1-hourly | forecast |
| e | Evaporation [m of water equivalent] | 1-hourly | forecast |
| e_deaccum | Deaccumulated evaporation [mm]3 | 1-hourly | forecast |
| sd | Snow depth (snow water equivalent) [m of water equivalent] | 1-hourly | analysis |
| sde | Snow depth (physical snow depth) [m] | 1-hourly | forecast |
| skt | Skin temperature [K] | 1-hourly | analysis |
1tp is the total precipitation download directly from ERA5-Land which accumulate daily up to 00Z. tp at 00Z is then the total accumulation for the previous day
2tp_deaccum is the deaccumulated total precipitation which was locally computed. The output of tp_deaccum at hZ is then the accumulated precipitation from ]h-1,h]
3e_deaccum is the deaccumulated evaporation which was locally computed. The output of e_deaccum at hZ is then the accumulated evaporation from ]h-1,h]
Location:
UQAM:
NetCDF format: ~archive/REANALYSES/ERA5-Land
AMMA
Period : 200605 - 200609
Horizontal grid : Atlantic Africa area, 0.5x0.5deg
Data source : http://bddamma.ipsl.polytechnique.fr/ecmwf-amma-re-analysis-2.html
Location : ~data/Validation/AMMA
Data policy: http://bddamma.ipsl.polytechnique.fr/data-policy.html
Before using these data please read the CONDITIONS OF USE
2-D fields:
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| MG | Land-sea mask | [0-1] |
| GZ | Geopotential | dam |
| PN | Mean sea level pressure | hPa |
| J8 | Skin temperature | Kelvin |
| TM | SST | Kelvin |
| TT | 2m temperature | oC |
| UU | 10m U wind component | knots |
| VV | 10m V wind component | knots |
| PC | Convective precipitation | m/s |
| AE | Large scale precipitation | m/s |
| AL | Albedo | [0-1] |
| IWVM | Total column water vapor | kg/m2 |
Fields on pressure levels: 1000, 950, 925, 900, 850, 800, 700, 600, 500, 400, 300, 250, 200, 150, 100, 70, 50, 30, 20, 10, 7, 5, 3, 2, 1
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| TT | Air temperature | oC |
| UU | U wind component | knots |
| VV | V wind component | knots |
| WW | Vertical wind component | Pa/s |
| QR | Relative vorticity | s-1 |
| HR | Relative humidity | % |
| GZ | Geopotential | dam |
Fields on model levels:
| NAME | DESCRIPTION | UNIT |
|---|---|---|
| PR | Total precipitation | m/s |
JRA25
Period : 197901 - 201212
Horizontal grid : 289x145 (1.25 deg) L grid (CMC/RPN)
Vertical info : 23 pressure levels from 0.4 hPa to 1000 hPa
Documentation : http://jra.kishou.go.jp/JRA-25/AboutJRA25_en.html
http://jra.kishou.go.jp/JRA-25/JRA25quality_en.html
Driving data : Atmospheric driving data on pressure levels
Location : ~data/Driving_data/Pilots/JRA25