Download Europe Volume "Agate"

Last update: Mar. 2018


   to download these data.

NB: As the two files are too large to be permanently placed on the SoDa server, please contact us so that we can make the data available for a short time period.

Copyright: please refer to this volume as "CAMS radiation service dataset "AGATE" over Europe computed with McClear version 3 and CAMS radiation bias correction - CAMS project - Dec. 2017".

Downloads  8


AGATE Description

  • Radiation components:
    • Global Horizontal Irradiation (GHI): ghi.h5
    • Beam (direct) Horizontal Irradiation (BHI): bhi.h5
    • Diffuse Horizontal Irradiation (DHI): dhi.h5
    • Beam (Direct) Normal Irradiation (BNI): bni.h5
    • Global Horizontal Irradiation in clear sky conditions (Gc): gc.h5
    • Beam (direct) Horizontal Irradiation in clear sky conditions (BHI): bc.h5
    • Diffuse Horizontal Irradiation in clear sky conditions (DHI): dc.h5
    • Beam (Direct) Normal Irradiation in clear sky conditions (BNI): bnc.h5
  • Time step: 15 minute
  • Temporal period: 2005 to 2016
  • Format: hdf5
  • 7z compressed

Click on the image to magnify
Grid description

We used a nb_lines*nb_columns = 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_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)
Volume content

Each HDF5 dataset comprises 420768 maps. 420768 is the number of 15 min periods from 2005-01-01 to 2016-12-31: 96 periods per day * 365 days * 12 years + 96 * 3 days (for 2008, 2012 and 2016 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 ghi.h5 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.h5. The small difference is due to the data compression as 1 byte per value in AGATE.

Click on the image to magnify: GHI on 2005-04-01 from 11h45 to 12h00 UT


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13 Apr. 2018: Ionut Balazs, Romania (has written a testimony on this activity)

28 Feb. 2018: Mr. Jetter, FFE, Germany

Feb. 2018: Miron Kursa ICM pologne