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This table presents the latest, daily average reading for atmospheric CO2 on the planet. Updates happen once a day with few exceptions. CO2 Is The Number to Watch. When the trend for atmospheric CO2 trend begins to falter and fall, we can expect global average temperature to follow.
The graphs show monthly mean carbon dioxide measured at Mauna Loa Observatory, Hawaii. The carbon dioxide data on Mauna Loa constitute the longest record of direct measurements of CO 2 in the atmosphere.
Each year, human activities release more carbon dioxide into the atmosphere than natural processes can remove, causing the amount of carbon dioxide in the atmosphere to increase. The global average carbon dioxide set a new record high in 2023: 419.3 parts per million.
The amount of planet-warming carbon dioxide in the Earth’s atmosphere has hit a new record, as humanity struggles to rein in emissions of greenhouse gasses from burning fossil fuels.
Recent Global CO 2 Trend. PDF Version. The figure shows daily averaged CO 2 from four GML Atmospheric Baseline observatories; Barrow, Alaska (in blue), Mauna Loa, Hawaii (in red), American Samoa (in green), and South Pole, Antarctica (in yellow).
The amount of carbon dioxide in the atmosphere has risen more than 45 percent since people began burning fossil fuels for energy. It hit a new high of 414.7 parts per million in 2021.
Carbon dioxide is accumulating in the atmosphere faster than ever — accelerating on a steep rise to levels far above any experienced during human existence, scientists from NOAA and the Scripps Institution of Oceanography offsite link at the University of California San Diego announced today.
Sea Level Rise Viewer. Carbon dioxide measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2022 at 421 parts per million in May, pushing the atmosphere further into territory not seen for millions of years, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego announced today.
The first graph shows atmospheric CO 2 levels measured by NOAA at Mauna Loa Observatory, Hawaii, since 1958. The second graph shows CO 2 levels during Earth’s last three glacial cycles, as captured by air bubbles trapped in ice sheets and glaciers.
This figure shows the atmospheric increase of CO 2 over 280 ppm in weekly averages of CO 2 observed at Mauna Loa.