Download Europe Volume "Agate"   -  contact us

Last update: May 2018

    Volume of data - maps

 

 Volume of 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

 
Introduction
  • 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 2017
  • 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 455808 maps, which corresponds to the number of 15 min periods from 2005-01-01 to 2017-12-31.

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
Routines to extract entire or part of AGATE

 

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Europe maps "AGATE" of CAMS radiation data and CAMS McClear

More info on AGATE data

Radiation Component DOWNLOADS MONTHLY AVERAGED
over 2005-2017
YEARLY AVERAGED
over 2005-2017

AGATE GHI

Global Horizontal Irradiation

 

Download zip-compressed yearly and monthly averaged GHI maps*

*How to visualise these uint16 Geotiff images

To cite these data:

© 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 – April 2018


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AGATE Gc

Global Horizontal Irradiation in cloud-free conditions

Download zip-compressed yearly and monthly averaged Gc maps*

*How to visualise these uint16 Geotiff images

To cite these data:

© 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 – April 2018


Click to maximize

Click to maximize

AGATE BNI

Direct Normal Irradiation

Download zip-compressed yearly and monthly averaged BNI maps*

*How to visualise these uint16 Geotiff images

To cite these data:

© 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 – April 2018


Click to maximize

Click to maximize

 

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