Greenhouse gases concentrations

Concentrations of carbon dioxide (CO₂), methane (CH₄), and carbon monoxide (CO) are shown from observations at Pallas-Sammaltunturi, Sodankylä, Helsinki-Kumpula, and Utö.

Long-term trend (daily averages), the latest seasonal cycle and the latest 14 days (hourly averages) are depicted. Black line is smoothed data with short term cutoff of 60 days.

Pallas - Sammaltunturi

CO₂ concentration has been measured at Pallas GAW and ICOS station since 1997.


Helsinki - Kumpula