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Atmospheric Greenhouse Gases
Trends in Atmospheric Carbon Dioxide
Monthly CO2 Average  (NOAA Data Source)

May 2024:  426.90 ppm

May 2023:  424.00 ppm

Last updated: Jun 5, 2024

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co2_data_mlo 0524.png

History of atmospheric carbon dioxide from 800,000 years ago until the end of the most recent GLOBALVIEW+ CO2 collection

Trends in Atmospheric Methane
Global CH4 Monthly Means   (NOAA Data Source)

February 2024:  1928.96 ppb

February 2023:  1920.26 ppb

Last updated: Jun 5, 2024

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ch4_trend_all_gl 0224.png
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