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Carbon dioxide (CO 2) is an important heat-trapping gas, also known as a greenhouse gas, that comes from the extraction and burning of fossil fuels (such as coal, oil, and natural gas), from wildfires, and natural processes like volcanic eruptions. The first graph shows atmospheric CO 2 levels measured by NOAA at Mauna Loa Observatory, Hawaii ...
The global average carbon dioxide set a new record high in 2023: 419.3 parts per million. Atmospheric carbon dioxide is now 50 percent higher than it was before the Industrial Revolution.
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.
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.
Causes and consequences of rising carbon dioxide levels . Carbon dioxide levels in the atmosphere have varied naturally throughout Earth’s history. However, current atmospheric carbon dioxide levels are comparable to what levels were around 4.3 million years ago during the mid-Pliocene epoch. Burning fossil fuels is a major culprit of rising ...
This figure shows concentrations of carbon dioxide in the atmosphere from hundreds of thousands of years ago through 2023, measured in parts per million (ppm). The data come from a variety of historical ice core studies and recent air monitoring sites around the world.
This indicator describes how the levels of major greenhouse gases in the atmosphere have changed over time. The data contains concentrations of carbon dioxide in the atmosphere from hundreds of thousands of years ago through 2021, measured in parts per million (ppm).
CO 2 levels are now comparable to the Pliocene Climatic Optimum, between 4.1 and 4.5 million years ago, when they were close to, or above 400 ppm. During that time, sea levels were between 5 and 25 meters higher than today, high enough to drown many of the world’s largest modern cities.
This video shows the accumulation of atmospheric carbon dioxide (CO 2) during a single calendar year. Every year, the world’s vegetation and ocean absorb about half of human-caused CO 2 emissions, slowing the rate of greenhouse gases entering the atmosphere.
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.