Climate-warming carbon dioxide concentrations in the atmosphere broke another record last month, breaching 430 parts per million for the first time in recorded history.
The Scripps Institution of Oceanography at the University of California, San Diego, whose researchers track atmospheric CO2, publicly announced the findings Thursday morning.
NOAA announced the findings in social media posts on X and Facebook, linking to the public data on its website. The agency also typically reveals the annual CO2 in a news release, like last year’s announcement, but hadn’t done so as of 12:30 p.m. ET on Thursday.
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Kim Doster, NOAA’s director of communications, did not immediately respond to a request for comment.
