![Air sampling flasks are lined up on a manifold for intake processing in NOAA's Global Monitoring Laboratory. Credit: Lauren Lipuma, CIRES](https://research.noaa.gov/wp-content/uploads/2024/04/2024April03-GML-CIRES-GHG-monitoring-Lauren-Lipuma-CROP@-18-1-1024x584.jpeg)
No sign of greenhouse gases increases slowing in 2023
Levels of the three most important human-caused greenhouse gases – carbon dioxide (CO2), methane and nitrous oxide – continued their steady climb during 2023, according to NOAA scientists. While the rise in the three heat-trapping gases recorded in the air samples collected by NOAA’s Global Monitoring Laboratory (GML) in 2023