helioclim-3 solar radiation database validation results

Comparison between solar radiation values from HelioClim-3 version 4 and version 5 database and in situ measurements from quality ground stations

One independant validation of Long term HelioClim-3 global, beam and diffuse solar irradiation performed by P. Ineichen, from University of Geneva, February 2016 demonstrates that regarding HelioClim-3 database: "

• the accuracy of the derived hourly global irradiance reaches 20% (standard deviation) with no bias, and 46% for the beam component with a 6% to 9% mean bias;

• the main improvement from version 4 to version 5 comes from the use of a new clear sky model with sub-daily aerosol data as input."  

Solar archives service

BSRN - 21 stations

EnerMENA - 10 stations

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INPE - 11 stations

INMET - 31 stations

RMI - 8 stations

Congo - 2 stations

• Mokabi validation report
• Pokola validation report

South-eastern part of the Arabic Peninsula - 5 stations

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Morocco - 5 stations

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Germany - 26 stations

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Netherlands - 16 stations

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Brazil - 42 stations

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Egypt - 7 stations

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