For two months, between mid-April and mid-June, the observatory of the Puy de Dôme in France was the focus of intense activity for greenhouse gases measurements, with no less than seven measurement systems deployed to monitor atmospheric concentrations of CO2, CH4, CO and O3.
The Puy de Dôme research station (1465m asl) was labeled GAW (Global Atmosphere Watch) by the World Meteorological Organization in 2015. It is also part of ACTRIS European network, EMEP, AERONET, EARLINET observation network, and is currently a candidate to become an ICOS station.
The objective of the campaign was to validate the continuous measurements of CO2, CH4, CO and O3 at the Puy de Dôme observatory, and verify the compliance of the protocols used in relation to the specifications of ICOS and WMO/GAW networks. For this two analyzers of the ICOS mobile laboratory were installed by FMI, and EMPA has done the same for the WMO/GAW audit. The results are now being analyzed.