Mastodawn

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

February 2026: 429.35 ppm
February 2025: 427.09 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Stuart (moved)Feb 6

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

January 2026: 428.62 ppm
January 2025: 426.65 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Lewisham Hot Bot Jan 21

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

December 2025: 427.49 ppm
December 2024: 425.40 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Lewisham Hot Bot Jan 6

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

December 2025: 427.49 ppm
December 2024: 425.40 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Stuart (moved)Jan 5

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

December 2025: 427.49 ppm
December 2024: 425.40 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Lewisham Hot Bot Dec 18

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

November 2025: 426.46 ppm
November 2024: 423.85 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Lewisham Hot Bot Dec 6

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

November 2025: 426.46 ppm
November 2024: 423.85 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Lewisham Hot Bot Nov 14

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

October 2025: 424.87 ppm
October 2024: 422.38 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory

Tom Zijlstra Oct 12

https://sailing-dulce.nl/home/article-9042 #maunaloaobservatory #co2concentratie #Shutdown2025 Zondag 12-10-2025 Sinds het begin van het weblog, dus al bijna twintig jaar, houd ik op een aparte locatie op de homepage de belangrijkste kengetallen van het veranderend klimaat bij. Het gaat bijvoorbeeld om de laatste gegevens over de CO2- en methaan-concentraties in de atmosfeer, die gemeten worden door het Mauna Loa observatorium op Hawaii, en de gemiddelde wereldoppervlaktetemperatuur, de gemiddelde zeespiegel..

Lewisham Hot Bot Sep 6, 2025

Monthly CO2 Atmospheric Concentration
From the Mauna Loa Observatory, Hawaii

August 2025: 425.48 ppm
August 2024: 422.99 ppm

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

#co2 #globalwarming #climatechange #temperature #weather #maunaloaobservatory