Training and workshops: International Spectroradiometer and Broadband Radiometer Intercomparison

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International Spectroradiometer and Broadband Radiometer Intercomparison

A week-long measurement campaign that allows participants to check and compare the performance of their equipment against that of reference instruments. Every year, the European Solar Test Installation (ESTI) laboratories of the Joint Research Centre (JRC) organise the International Spectroradiometer Intercomparison (ISRC). The event consists of a week-long uninterrupted measurements of solar and artificial radiation.

The activity is open to all interested participants, who will have the opportunity to measure their equipment's performance with reference instruments. Participants will be given access to the entire dataset of spectra acquired during the measurement, including the reference data.

Key Dates:

• 31 May 2025: Application deadline
• 16 - 20 June 2025: Execution of measurements

Practical Information

When: Monday 16 June 2025, 08:00 - Friday 20 June 2025, 19:00 (CEST)

Where: Joint Research Centre, Via Enrico Fermi, 2749, 21027 Ispra VA, Italy

Who Should Attend:

• PV laboratories
• Space agencies
• National metrological institutes
• Universities
• Research groups
• Manufacturers of measurement equipment operating in the fields of climatology and meteorology

Languages: English, Italian

Organisers:

Joint Research Centre

Entrance Fee: Registration is free of charge. All other expenses (travel, accommodation, etc.) are covered by participants.

Description:

The performance of the participating spectroradiometers will be assessed against a set of calibrated ESTI spectroradiometers by measuring:

• Natural sunlight in clear sky conditions
• Artificial light using the steady-state large area Apollo solar simulator
• FEL standard lamps

Several performance statistics indicators will be calculated, with focus on the relative spectral content in different spectral bands. The results will be published by the JRC in an official report. All the participants will have access to the entire dataset of spectra acquired by the group, including the reference data. Several other prototypes and custom sensors are also eligible for participation and the report foresees a dedicated section for these instruments if they are not directly comparable with reference instruments.

Launched in 2011, the first ISRC edition focused primarily on photovoltaic (PV) research and application. Over the years, the range of interested participants has gradually differentiated, encompassing not only laboratories in the PV field, but also space agencies, national metrological institutes (NMI), universities, research groups and manufacturers of measurement equipment operating in the fields of climatology and meteorology.