URBAG is using a Picarro G2301 station that measures CO2, CH4 and H20 from the ceiling of the ICTA-UAB. Located at a height of 147m above sea level, the station takes measurements every 10 seconds based on the cavity ring-down spectroscopy technique. This data is open to everyone by clicking on the image below, where you will also find more technical specifications.
Title: Exploring the Potential of Using Carbonyl Sulfide to Track the Urban Biosphere Signal / Cities are implementing additional urban green as a means to capture CO2 and become more carbon neutral. However, cities are complex systems where anthropogenic and natural components of the CO2 budget interact with each other, and the ability to measure the efficacy of such measures is still not properly addressed.