• Radiation components:
  • Global Horizontal Irradiation (GHI): ghi_20XX.h5
  • Beam (direct) Horizontal Irradiation (BHI): bhi_20XX.h5
  • Diffuse Horizontal Irradiation (DHI): dhi_20XX.h5
  • Beam (Direct) Normal Irradiation (BNI): bni_20XX.h5
  • Global Horizontal Irradiation in clear sky conditions (Gc): gc_20XX.h5
  • Beam (direct) Horizontal Irradiation in clear sky conditions (BHI): bc_20XX.h5
  • Diffuse Horizontal Irradiation in clear sky conditions (DHI): dc_20XX.h5
  • Beam (Direct) Normal Irradiation in clear sky conditions (BNI): bnc_20XX.h5
• Time step: 15 minute
• Temporal period: 2005 to 2020
• Format: hdf5
• 1 hdf5 file per year and per component

We used a grid of nb_columns*nb_lines = 275*126 points over Europe with a 0.2° step. Only grid cells on land were computed. Download the list of the 275*126 grid points in CSV format.

Grid:

• grid_step = 0.2°
• minimum longitude: -10.3°
• minimum latitude: 34.9°
• maximum longitude: 44.7°
• maximum latitude: 60.1°

NB: the formula to convert (lat, lon) into grid cell is:

• x = round((lon - lon_min)/grid_step + 0.5)
• y = round((lat_max - lat)/grid_step + 0.5)

Each HDF5 dataset comprises 35040 maps, which correspond to the number of 15 min periods in 1 year (35136 maps for leap years).

Each value in HDF5 files is stored as an unsigned byte:

• The value 255 denotes a grid cell over the sea (not computed)
• The value 254 means a computation error
• Else, the value should be multiplied by 1.2 to get the 15 min irradiation in Wh/m².

If you extract hdf5 data as a time series for one location, you will get almost the same data as CAMS Radiation web interface.

For example, CAMS_Radiation_GHI_at_point_300_on_2005-01-10.jpg compares CAMS Radiation GHI on 2005-01-10 at location (57.4, -2.4) extracted from the web interface and from ghi_2005.h5. The small difference is due to the data compression as 1 byte per value in AGATE.

• CAMS Examples in Matlab language
  

Download zip-compressed yearly and monthly averaged GHI maps

© ARMINES / MINES ParisTech / TRANSVALOR /  ECMWF - COPERNICUS Atmosphere Monitoring Service – Monthly and yearly average Global Horizontal Irradiation maps from CAMS Radiation Service over Europe – "AGATE" volume

Download zip-compressed yearly and monthly averaged DHI maps

Download zip-compressed yearly and monthly averaged Gc maps

© ARMINES / MINES ParisTech / TRANSVALOR /  ECMWF - COPERNICUS Atmosphere Monitoring Service – Monthly and yearly average Global Horizontal Irradiation maps in cloud-free conditions from CAMS McClear over Europe – "AGATE" volume

Download zip-compressed yearly and monthly averaged BNI maps

© ARMINES / MINES ParisTech / TRANSVALOR /  ECMWF - COPERNICUS Atmosphere Monitoring Service – Monthly and yearly average Direct Normal Irradiation maps from CAMS Radiation Service over Europe – "AGATE" volume