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Predicting global warming: how water vapor affects the radiative forcing of CO2
In a new study in Geophysical Research Letters, Dr. Lukas Kluft, Dr. Sally Dacie, Prof. Dr. Bjorn Stevens (scientists at the Max Planck Institute for…
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Global Carbon Project: Tracking the fate of man-made CO2
After the global average of fossil carbon dioxide emissions dropped significantly in 2020, this year they are again approaching levels before the…
Humidity differences and their effect on the clear-sky radiation budget in global storm-resolving models
In a new study in the Journal of Advances in Modeling Earth Systems Theresa Lang, Dr. Ann Kristin Naumann, Prof. Bjorn Stevens and Prof. Stefan A.…
Tracking the fate of anthropogenic carbon in the ocean — Modeling the global 13C-Suess effect
Rising fossil-fuel CO2 emissions deplete the atmospheric concentrations of the heavy carbon isotope 13C. This phenomenon, called the 13C Suess…
Variations of tropical lapse rates in climate models and their implications for upper tropospheric warming
In a new study in the Journal of Climate Paul Keil, Hauke Schmidt, Bjorn Stevens and Jiawei Bao from the department “The Atmosphere in the Earth…
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Do clouds amplify global warming? EUREC4A field study tests hypothesized mechanisms
The science guiding the field campaign EUREC4A (Elucidating the role of clouds-circulation coupling in climate) and its measurements is presented in…
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Future methane concentration underestimated in climate change scenarios
In a new study in Environmental Research Letters Dr Thomas Kleinen and Prof Victor Brovkin, researchers at the Max Planck Institute for Meteorology…
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Earth’s albedo and its symmetry
In an article appearing in AGU Advances, Dr. George Datseris and Prof. Bjorn Stevens provide an analysis of the Earth’s albedo, its surprising…
The newest IPCC report – a look behind the scenes
A very personal account by Jochem Marotzke The just-published Assessment Report 6 (AR6) of the Intergovernmental Panel on Climate Change IPCC has…
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Variational data assimilation – one problem less
In a new study in the Journal of Nonlinear Science Dr Peter Korn, scientist and group leader in the department “The Ocean in the Earth system” at the…
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New IPCC Assessment Report: Climate change widespread, rapid, and intensifying
How has climate changed up until the present? How will it change in the future? Questions like these are answered in the recently published first…
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Past abrupt changes provide evidence of cascading tipping points and ‘early warning signals’ in the Earth system
Can climate change result in a collapse in parts of the Earth system, what impacts would these events have on society, and can they be predicted? In…