Scripps Institution of Oceanography, La Jolla, CA

Welcome to Scripps CO2

Welcome to the Home of the Keeling Curve

CO2 Concentration at Mauna Loa Observatory, Hawaii

Carbon Dioxide Concentration at Mauna Loa, Hawaii
Keeling Curve
Mauna Loa Observatory, Hawaii
Mauna Loa Observatory


For daily updates, see keelingcurve.ucsd.edu


Measurements by the Scripps CO2 program are supported by the U.S. Department of Energy (DOE) and by Earth Networks, a technology company that is collaborating with Scripps to expand the global GHG monitoring network.

In kind support for field operations is also provided by the National Oceanographic and Atmospheric Administration (NOAA), the National Science Foundation (NSF), Environment Canada, and the New Zealand National Institute for Water and Atmospheric Research (NIWA).