NOAA/ESRL - April 2026 Atmospheric CO2 Content: 431.12 ppm; April 2025 429.64 ppm; April 2024 426.51 ppm

[hatrack]

Whaddya know?!? ESRL is (apparently) partially staffed!!

They also provide official monthly data for the prior month.

March 2026 Atmospheric CO2 Content: 430.15 ppm
March 2025 Atmospheric CO2 Content: 428.15 ppm
March 2024 Atmospheric CO2 Content: 425.38 ppm

This: https://gml.noaa.gov/ccgg/trends/

Leads to this: https://gml.noaa.gov/ccgg/trends/data.html

Leads to this: https://gml.noaa.gov/webdata/ccgg/trends/co2/co2_mm_mlo.txt

[NNadir]

1. All of the daily measurements this week have been labeled "unavailable. "

Last edited Fri May 8, 2026, 06:12 PM - Edit history (1)

I'm very worried that the instrument, a cavity ring down spectrometer is down with no money to fix it, the scientists have been fired, the purchase of analytical standards have been defunded, any and all of the above. The spectrometer is a relatively inexpensive device, about 200K, but surely one with a very limited pool of service engineers.

We have lost only one week of data since 1959, this during the orange pedophile's recent government shutdown. This week would be tragic, since we are nearing the annual maxima, which could be lost forever.

The last accepted daily reading was on the first of May, 433.95 ppm.

I have been very worried about the Observatory, given the reign of ignorance.

[OKIsItJustMe]

2. Their webcams also appear to be off-line, suggesting something other than a spectrometer failure

https://gml.noaa.gov/obop/mlo/livecam/livecam.html

[hatrack]

3. Didn't a fairly recent eruption of Kilauea cut the road to the observatory?

This would have been, oh, four or five years ago.

IIRC, they were unable to do measurements for a couple of weeks.