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SPECIAL: Direct CO2 pricing gives room for additional voluntary emissions reductions

Foto: iStockMost climate economist agree that it makes sense to put a price tag on the emission of the most important greenhouse gas carbon dioxide, CO2. The discussion primarily revolves around whether it would be better to achieve this through a tax or emissions trading. Arguments include the administrative effort involved, the signal effect for investors, and the political enforceability. A new study based on a scientifically controlled experiment now sheds light on another aspect that has barely been researched so far: the incentive effect of both options on actors who want to act morally beyond their economic interests. The study was conducted by the economists Axel Ockenfels, Peter Werner and Ottmar Edenhofer, and has now been published in the renowned journal Nature Sustainability. Read more...

Potsdam Climate Council: Fritz Reußwig appointed as expert

Potsdam Climate Council: Fritz Reußwig appointed as expert

25/02/2020 - PIK sociologist Fritz Reußwig has been appointed to the new Potsdam Climate Council. In the eight-member expert committee he will be in charge of the domain "private households and consumption" for the current term. As honorary body, the Potsdam Climate Council has the task of accompanying the implementation the city's climate mitigation master plan, identifying possible conflicts of objectives in the implementation and providing impulses in the social discourse towards more sustainability and climate protection.

Potsdam Climate Council: Fritz Reußwig appointed as expert - Read More…

Ricarda Winkelmann departs on “Expedition Anthropocene“ on Mount Chimborazo, Ecuador

Ricarda Winkelmann departs on “Expedition Anthropocene“ on Mount Chimborazo, Ecuador

24/02/2020 – Humans are the defining geological force shaping Earth in our current epoch that has been named the Anthropocene. Across disciplinary boundaries, six members of the 'Junge Akademie', the academy of prominent young scientists and artists from German speaking backgrounds, have departed on an expedition on tracing some of human’s impact onto the environment. 200 years after Alexander von Humboldt, they will climb the Ecuadorian volcano Chimborazo in search of humanity’s footprint in different altitudes and vegetation zones. Besides PIK’s Ricarda Winkelmann, a mathematician glaciologist, the scientists involved come from a great variety of disciplinary backgrounds: biology, chemistry, sound ecology, computer science, and medicine.

Ricarda Winkelmann departs on “Expedition Anthropocene“ on Mount Chimborazo, Ecuador - Read More…

Bundesbank experts discuss climate risks for finance

Bundesbank experts discuss climate risks for finance

13/02/2020 - Climate risks for finance were at the centre of a joint workshop at the Potsdam Institute for Climate Impact Research (PIK) with experts from the German Bundesbank. Both the physical impacts of global warming, for instance weather extremes, and the economical impacts of transitioning to net zero CO2 emissions have huge implications. The experts and scientists discussed potential future collaborations, namely on data exchange and computer simulation modelling.

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Focus on food to address climate change

Focus on food to address climate change

18/02/2020 - Bringing together agricultural production, supply chains, and consumption: In a comment published in the new journal Nature Food researchers discuss a new global food system approach to climate change research. When these activities are considered together, they represent 21 to 37 percent of total human-caused greenhouse gas emissions, the authors note. This new approach also enables a fuller assessment of the vulnerability of the global food system to increasing droughts, intensifying heatwaves, heavier downpours, and exacerbated coastal flooding. Food system responses thus play a major role in both adapting to and mitigating climate change, the authors assert.

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Eurogroup Finance Ministers debate with Edenhofer

Eurogroup Finance Ministers debate with Edenhofer

17/02/2020 - The Eurogroup Finance Ministers invited climate economist Ottmar Edenhofer to speak at their Brussels meeting this Monday. They expect him to “bring a fresh perspective” based on his “important contributions to the research and public debate on the economics of the climate transition”. Edenhofer, Director of the Potsdam Institute for Climate Impact Research and the Mercator Research Institute on Global Commons and Climate Change, will talk about environmental taxation that could help both climate stabilization and social equity.

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The Antarctica Factor: model uncertainties reveal upcoming sea level risk

The Antarctica Factor: model uncertainties reveal upcoming sea level risk

Sea level rise due to ice loss in Antarctica could become a major risk for coastal protection even in the near term, scientists say. Within this century already, due to Antarctica alone global sea level might rise up to three times as much as it did in the last century. This is a finding of an exceptionally comprehensive comparison of state-of-the-art computer models from around the world.

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2°C ocean warming has been enough to destabilize Antarctica in the past

2°C ocean warming has been enough to destabilize Antarctica in the past

12/02/2020 - A melting of the Antarctic ice sheets would have far-reaching consequences for sea-level rise and coastal regions around the world. Based on new data from the Antarctic ice, an international team of scientists now reveals how the ice sheet reacted to rising temperatures in the past. Published in the US Proceedings of the National Academy of Sciences, their study using data from a blue ice field shows for the first time that the West Antarctic Ice Sheet already proved to be quite unstable during the last warm period 120,000 years ago. The Eemian warm period was the last phase of climate history with global temperatures similar to those that the world is heading towards due to manmade global warming in the coming decades.

2°C ocean warming has been enough to destabilize Antarctica in the past - Read More…

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