This bulletin provides a comprehensive overview of the global atmospheric concentrations of key greenhouse gases (GHGs)—carbon dioxide (CO₂), methane (CH₄), and nitrous oxide (N₂O)—based on data from the WMO Global Atmosphere Watch (GAW) network. The report highlights a continued rise in GHG levels, with CO₂ reaching 420 ppm in 2023, marking a 151% increase from pre-industrial levels. Methane and nitrous oxide also saw significant increases, attributed to anthropogenic activities and natural variations. The bulletin emphasizes the influence of phenomena like El Niño on GHG concentrations and outlines the role of emissions from wildfires and fossil fuel combustion. It calls for enhanced GHG monitoring and climate action to mitigate future warming and maintain ecosystem resilience.
Authors
- Published in
- Switzerland
