Professor of Physics of the Oceans & Head of Earth System Analysis at the Potsdam Institute. Public speaker. Dad. I don’t read comments here, I do at Bluesky.

Potsdam
Joined February 2011
Today the 2025 State of the Cryosphere report was published by over 50 leading cryosphere scientists. An urgent warning about the global consequences of the meltdown of ice, including the risk of shutdown of the Atlantic Ocean current system #AMOC. 🌊 iccinet.org/statecryo25/
β€œThe death of human empathy is one of the earliest and clearest signs of a culture descending into barbarism.” Hannah Arendt
New study in Nature by Lin et al shows how the sea-level rise from the melting Ice Age ice (a total of 120 meters rise) ended thousands of years ago. Until our fossil fuel use started a new phase of rising seas. Graph shows the global mean rate of rise. 🌊 nature.com/articles/s41586-0…
Extended hurricane category scale, following Wehner&Kossin, Proceedings of the National Academy 2024: pnas.org/doi/abs/10.1073/pna… If that scale didn't stop at Category 5 for historic reasons, we would have had several Category 6 tropical cyclones since year 2000.
AXA and Ipsos have published the 12th edition of the Future Risks Report, a report based on a global survey of 23,000 citizens and 3,595 risk experts. What do both experts and citizens rank as greatest risk? *** Climate change *** So do I, after over 35 years climate science.
Replying to @elonmusk
Elon, don’t you realize that the AfD campaigns against electric cars and for diesel and combustion engines?
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Here’s a reminder how closely the sea-surface temperature response to an #AMOC slowing matches what is actually observed in the past decades in the Atlantic. More on that here: realclimate.org/index.php/ar…
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New study by Falkena et al. shows that most climate models don’t capture the established key mechanism that can destabilize the North Atlantic subpolar gyre. Those models that get it predict abrupt subpolar gyre changes in the coming decades 😳. esd.copernicus.org/articles/…