The research projects

This European project aims to improve metrological traceability for the measurement of the main essential climate variables (ECVs) defined by the Global Climate Observing System (GCOS).

The term "greenhouse gas" (GHG) includes various gases naturally present in the atmosphere (CO₂, CH₄, N₂O, O₃) or resulting from human activity (CO₂, CH₄, CF₄, SF₆,...) and which have in common to absorb solar radiation re-emitted by the Earth's surface, thus contributing to global warming.

The Sixth Community Environment Action Programme, adopted by Decision No 1600/2002/EC of the European Parliament, established the need to reduce pollution to levels that minimise harmful effects on human health. One of the levers for achieving the air quality objectives set by the EU is to act on emissions linked to transport (air, sea and road).

The European project, coordinated by the SFI-Davos (Switzerland), aims to develop methods for measuring direct, diffuse and global solar spectral irradiance between 290 nm and 400 nm with an uncertainty of 1% to 2% and new instruments for rapid measurement of spectral irradiance (UV to TF spectroradiometers) to take into account rapid variations in atmospheric conditions (measurement duration less than 10 s and repetition time less than 1 min).