Greenhouse Global Surface Ocean CO2 Reference Observing Network

This map shows the locations where measurements of carbon dioxide at the ocean’s surface have been made around the world for at least a decade. Red lines show the tracks of NOAA ships and uncrewed surface vehicles; gray lines show non-NOAA watercraft. Red squares show locations of NOAA's moored buoys; gray squares show non-NOAA buoys. Credit: NOAA GML