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 a recent publication by Prof. Bjorn Stevens, of the Max Planck Institute for Meteorology (MPI-M) in Hamburg, Dr. Sandrine Bony, of the Laboratoire de Météorologie Dynamique in Paris, Dr. David Farrell…

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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 (MPI-M), together with Dr Sergey Gromov and Dr Benedikt Steil, researchers at the Max Planck Institute for Chemistry (MPI-C), showed that the changes in methane concentration under future warmer climate…

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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 symmetry between the two hemispheres, and how clouds make it possible.

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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 Max Planck-Institute for Meteorology (MPI-M), investigates one class of data assimilation algorithms, namely variational data assimilation methods.

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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 part of IPCC´s Sixth Assessment Report, which summarizes the scientific facts about climate change. This first part will be supplemented with two more parts in the coming spring, addressing adaptation to…

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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 the article published in Nature Geoscience, an international team of natural and social scientists have reviewed abrupt shifts in the Earth's past in order to sharpen their tools for predicting the…

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The observed impact of mesoscale vertical motion on tropical clouds

A recent study by Geet George, Bjorn Stevens (both from the Max Planck Institute for Meteorology) and Marcus Klingebiel (now at Leipzig University) along with Sandrine Bony and Raphaela Vogel (Laboratoire de Météorologie Dynamique in Paris) shows that aspects of the atmospheric circulation tend to control low-level cloudiness at the mesoscale…

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Waves and coherent flows in the tropical atmosphere: new opportunities, old challenges

In a review article appearing in the Quarterly Journal of the Royal Meteorological Society, Dr. Claudia Stephan (Max Planck Institute for Meteorology), Prof. Nedjeljka Žagar (Universität Hamburg) and Prof. Ted Shepherd (University of Reading) provide their perspective on present understanding of waves and coherent flows in the atmosphere, and their…

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Exploiting large ensembles for a better yet simpler climate model evaluation

In a new study, Dr. Laura Suarez, Dr. Sebastian Milinski and Dr. Nicola Maher evaluate which models best capture the real-world climate with its internal variability and response to external forcings in observed surface temperatures. They used a novel framework that utilizes the unique design and power of SMILE experiments, single model initial-con…

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Cathy Hohenegger successfully habilitated at Universität Hamburg

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Dr. Cathy Hohenegger, scientist and leader of the group “Precipitating Convection” at the Max Planck Institute for Meteorology (MPI-M), was awarded her Habilitation (the highest qualification level in the German university system) on 24 June 2021.

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