Atmospheric carbon dioxide has cracked the 430 ppm level at the Mauna Loa Observatory in on Hawaii.
Here's NOAA's daily source for the data; the image above is from Daily CO2.
In fact, atmospheric CO2 at MLO peaked this year at 431.13 ppm on 27-April-2025. Last year it peaked at 428.59 ppm on 26-April-2024. That's only a 2.45 ppm increase, maybe a touch below the recent average, maybe due to the relative ENSO states. 2024 as a year (not a season) was somewhat on the La Nina-side, with this year slightly towards the El Nino-side. (I think.)
So, it's not clear if next year will break 435 ppm. Anyway the fascists might have stopped all US scientific measurements by then. (Yes, I know it's measured at many other places around the globe, but as far as I know none of them has the longevity of the Mauna Loa data.)
2 comments:
Remember when we used to worry about 2ppm/year?
Yeah lol. I also remember worrying about 375 ppm.
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