NOAA’s latest Annual Greenhouse Gas Index (AGGI), released today, Friday, May 2, 2014, shows that the warming influence from human-emitted gases continued to increase in 2013. This trend that began with the Industrial Revolution of the 1880s has accelerated in recent decades.
On May 9, the daily mean concentration of carbon dioxide in the atmosphere of Mauna Loa, Hawaii, surpassed 400 parts per million (ppm) for the first time since measurements began in 1958.
Earth’s oceans, forests and other ecosystems continue to soak up about half the carbon dioxide emitted into the atmosphere by human activities, even as those emissions have increased, according to a study by University of Colorado and NOAA scientists published today in the journal Nature.
The concentration of carbon dioxide in the atmosphere of Barrow, Alaska, has reached a new milestone this spring, according to NOAA measurements.