US EditionAtmospheric carbon dioxide levels break seasonal records: NOAA
- In May 2025, researchers at NOAA's Mauna Loa Observatory and the Scripps Institution of Oceanography recorded atmospheric CO2 levels surpassing 430 ppm for the first time.
- This record follows a steady rise in CO2 levels, increasing by 3.5 ppm from May 2024's 426.7 ppm measurement, reflecting ongoing emissions.
- Data from the Mauna Loa Observatory, combined with measurements from worldwide stations, forms a key dataset that supports international climate research and informs policymakers addressing climate change.
- A leading scientist from the Scripps CO2 Program emphasized the ongoing rise in atmospheric carbon dioxide by noting, "Another year, another record."
- Rising CO2 traps heat, altering weather patterns and causing extreme events like droughts and wildfires, while also contributing to ocean acidification that harms marine life.
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We interrupt the Musk-Trump feud with a teensy bit of news from the climate front
Ralph Keeling, director of the Scripps CO2 Program, noted Thursday: “Another year, another record,” It’s sad.” Here’s why: For the first time, the seasonal peak of carbon dioxide concentrations in the atmosphere exceeded 430 parts per million (ppm) at...
Annual carbon dioxide peak passes another milestone
For the first time, the seasonal peak of carbon dioxide concentrations in the atmosphere exceeded 430 parts per million (ppm) at NOAA's Mauna Loa Observatory on Hawaii, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego reported today.
Atmospheric CO₂ reached a new record of 430.5 ppm in May 2025, according to NOAA. It is the second largest annual jump recorded in 67 years of measurements at Mauna Loa, reflecting the worrying progress of global climate change. Evolution of CO₂ concentrations at Mauna Loa from 1960 to May 2025, when they reached a record of 430.5 ppm, according to NOAA data. The planet has just broken a worrying new record. Atmospheric carbon dioxide (CO₂) conc…
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