The annual peak of global carbon dioxide in the air has reached another dangerous milestone: 50% higher than when the industrial age began.
The National Oceanic and Atmospheric Administration said thefor May was 419.13 parts per million. That’s 1.82 parts per million higher than May 2020 and 50 percent higher than the stable pre-industrial levels of 280 parts per million, said NOAA climate scientist Pieter Tans.
Carbon dioxide levels peak every May just before plant life in the Northern Hemisphere blossoms, sucking some of that carbon out of the atmosphere and into flowers, leaves, seeds and stems. The reprieve is temporary, though, because emissions of carbon dioxide from burning coal, oil and natural gas for transportation and electricity far exceed what plants can take in, pushing greenhouse gas levels to new records every year.
“Reaching 50 percent higher carbon dioxide than preindustrial is really setting a new benchmark and not in a good way,” said Cornell University climate scientist Natalie Mahowald, who wasn’t part of the research. “If we want to avoid the worst consequences of climate change, we need to work much harder to cut carbon dioxide emissions and right away.”
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