doomer

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May exceeds 430ppm monthly average, second highest peak to peak increase in history (scripps.ucsd.edu)

submitted 2 weeks ago by [email protected] to c/[email protected]

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Scripps Oceanography scientists calculated a May monthly average of 430.2 ppm for 2025, an increase of 3.5 ppm over May 2024’s measurement of 426.7 ppm. Scientists with NOAA’s Global Monitoring Laboratory reported an average of 430.5 ppm, an increase of 3.6 ppm over last year.

“Another year, another record,” said Ralph Keeling, director of the Scripps CO2 Program. “It’s sad.”

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[–] [email protected] 8 points 2 weeks ago (3 children)

Where is this average for?

[–] [email protected] 10 points 2 weeks ago* (last edited 2 weeks ago) (2 children)

This is atmospheric co2 readings from Mauna Loa Observatory.

[–] [email protected] 6 points 2 weeks ago (1 children)

Ah, USA. Did think it was odd. Thank you.

[–] [email protected] 4 points 1 week ago

Hawaii is pretty far from the mainland though