The NOAA CO2 data website has vanished.
https://gml.noaa.gov/ccgg/trends/
https://gml.noaa.gov/ccgg/trends/
Comments
"Scheduled 5-year maintenance of the electrical switchgear This will interrupt all internet service at the building, including laboratory web pages as well as most data centres"
https://www.boulder.noaa.gov/public-affairs/
https://www.noaa.gov/climate
The NOAA website is working. (That's here, maybe the US and other countries are different)
Most of the NOAA pages containing CO2 information are down.
https://gml.noaa.gov/ccgg/trends/