Broadly stable atmospheric CO2 and CH4 levels over the past 3 million years

2026/03/18 by Julia Marks-Peterson, Sarah Shackleton, John Higgins +17 · 2 voices · 2 citations
Earth and Planetary Sciences · Environmental Science · #Geology and Paleoclimatology Research #Polar Research and Ecology #Cryospheric studies and observations

paper · doi:10.1038/s41586-025-10032-y

Citations

• Global mean sea level over the past 4.5 million years

Cited by

• Paleogeographic modulation of Phanerozoic climate by albedo compensation of interhemispheric land imbalances
• Global ocean heat content over the past 3 million years

Discussions

• Getting direct measurements of CO2 from Pliocene-aged ice has been a Holy Grail of climate science! A new paper by @jmarkspeterson.bsky.social provides a record of CO2 going back 3million years(!), w [bsky, 85 points, 4 comments]
• Marks-Peterson, J., Shackleton, S., Higgins, J. et al. Broadly stable atmospheric CO2 and CH4 levels over the past 3 million years. #stableisotopes Nature 651, 647–652 (2026). doi.org/10.1038/s415... [bsky, 0 points, 0 comments]