May 17 2024 marks 50 years of NOAA’s continuous measurements of atmospheric carbon dioxide concentrations at the Global Monitoring Laboratory’s Mauna Loa Observatory.
The world’s benchmark climate monitoring station passes a major milestone Read More >
The eruption of Mauna Loa volcano on Hawaii’s Big Island on Nov. 27, 2022 temporarily interrupted important scientific observations at the Global Monitoring Laboratory’s atmospheric
One year after the eruption, Mauna Loa Observatory has resumed key science activities Read More >
Carbon dioxide levels measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked at 424 parts per million in May, continuing a steady climb further into
Broken record: Atmospheric carbon dioxide levels jump again Read More >
In May, NOAA's measurements at the Mauna Loa observatory averaged 419.13 parts per million. Scientists at Scripps calculated a monthly average of 418.92 ppm. It's the highest level since accurate measurements began 63 years ago.
Carbon dioxide peaks near 420 parts per million at Mauna Loa observatory Read More >
Atmospheric carbon dioxide measured at Mauna Loa Observatory reached a seasonal peak of 417.1 parts per million for 2020 in May, the highest monthly reading ever recorded. Monthly CO2 values at Mauna Loa first breached the 400 ppm threshold in 2014, and are now at levels not experienced by the atmosphere in several million years.
Rise of carbon dioxide unabated Read More >
Peak carbon dioxide levels surpass 410 parts per million for April and May Carbon dioxide levels measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory averaged
Another climate milestone on Mauna Loa Read More >
