Greenhouse-gas analyzer

Continuous measurements of carbon dioxide (CO2), carbon monoxide (CO) and methane (CH4) are conducted in the framework of the national RAMCES/ICOS network since May 2014 at Pic du Midi, and April 2019 at CRA.

These measurements are made on both sites by means of Picarro G24 analyzers based on cavity ring-down spectroscopy (CRDS). The applied QA/QC protocol (tracability of data and calibration chain; regular human-eye data check; etc.) is the one defined in the European programme ICOS. The collected data contribute to the international WMO GAW programme.

For details : ICOS du Pic du Midi station ICOS CRA station

Consolidated data open access : https://sno-ifa.aeris-data.fr/en/catalogue/ (search key: PDM or CRA)