Georg Feulner awarded adjunct professorship in recognition of teaching and research
13.06.2025 - Georg Feulner, Deputy Head of the “Earth System Analysis” research department at the Potsdam Institute for Climate Impact Research (PIK), was awarded the title of Adjunct Professor in Climate Physics by the University of Potsdam in May 2025. With this appointment, the Faculty of Science honours his outstanding contributions to research and teaching, particularly in the field of palaeoclimatic Earth system development.
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Weak winds key factor in 2023 extreme North Atlantic heatwave – marine heatwaves set to worsen
04.06.2025 – The largest marine heat wave ever recorded in the North Atlantic Ocean, occurring in the summer of 2023, was primarily driven by unusually weak winds, leading to an exceptionally shallow – and warm – upper ocean layer, according to a new international study published in Nature. Such extreme marine heat events are likely to become more frequent as climate change continues to thin the ocean’s upper layer, conclude the researchers, including Stefan Rahmstorf from the Potsdam Institute for Climate Impact Research (PIK).
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Scientists say next few years vital to securing the future of the West Antarctic Ice Sheet
03.06.2025 – Collapse of the West Antarctic Ice Sheet could be triggered with very little ocean warming above present-day, leading to a devastating four metres of global sea level rise to play out over hundreds of years according to a study now published in Communications Earth & Environment, co-authored by the Potsdam Institute for Climate Impact Research (PIK). However, the authors emphasise that immediate actions to reduce emissions could still avoid a catastrophic outcome.
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PIK covers a wide range of topics at the Potsdam Science Day
13.05.2025 – Ocean circulation, climate myths, transport transition, biodiversity: at the Potsdam Science Day – a large information fair – visitors were able to get an idea of the breadth of topics at the Potsdam Institute for Climate Impact Research (PIK). With an estimated 8000 attendees, more than 40 universities and research institutions from Brandenburg presented their research topics in over 200 programme items at the Potsdam Science Park in Potsdam-Golm.
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Empowering future female researchers – Girls’ Day 2025 at PIK
04.04.2025 – How can we gain insights from climate models? And why is it so difficult to internationally agree on climate targets? Twenty-one female secondary school students had the opportunity to explore these and many other exciting questions at the Girls’ Day at the Potsdam Institute for Climate Impact Research (PIK). This marked the 14th time that PIK had hosted the future-oriented day for schoolgirls.
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Amplified global heating risk due to climate and carbon cycle feedbacks
24.03.2025 - Global heating over this millennium could exceed previous estimates due to carbon cycle feedback loops. This is the conclusion of a new study by the Potsdam Institute for Climate Impact Research (PIK). The analysis shows that achieving the Paris Agreement’s aim of limiting global warming to well below 2°C is only feasible under very low emission scenarios, and if climate sensitivity is lower than current best estimates. The paper is the first to make long-term projections over the next 1,000 years while accounting for currently established carbon cycle feedbacks, including methane.
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PIK Research Days 2025: Interdisciplinary climate research under one roof
13.03.2025 - From the stability of the Atlantic overturning circulation and new findings on climate solutions to the social dynamics of populism and climate policy - the PIK Research Days 2025 on March 11 and 12 offered a comprehensive insight into the latest research findings of the Potsdam Institute for Climate Impact Research (PIK). In addition to intensive discussions and interdisciplinary knowledge exchange, the focus was also on diversity, freedom and inclusion: values that characterize PIK's scientific approach.
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Little potential for “climate plantations” within planetary boundaries
12.02.2025 – Planting fast-growing crops, burning them, capturing the released CO₂ and storing it: this is being discussed as a way to remove greenhouse gases from the atmosphere and limit global heating to 1.5 degrees in the long term. But if this is done on land beyond existing agriculture, it endangers the stability of the biosphere. A study by the Potsdam Institute for Climate Impact Research (PIK) in Nature Communications Earth & Environment puts a figure on the potential of such novel “climate plantations”, also known as bioenergy with carbon capture and storage (BECCS). The study considered not only the carbon balance but also other planetary boundaries.
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New study identifies causal links behind the increase in hot and dry extremes in Central Europe
23.12.2024 - Hot extreme weather events in Central Europe are driven primarily by anomalous atmospheric patterns and soil water deficiency, a new study led by scientists from the Potsdam Institute for Climate Impact Research PIK shows. In contrast, dry extremes are mainly caused by atmospheric anomalies and soil moisture memory, and only marginally by temperature changes.
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Global Recognition: PIK researchers again part of the top 1% of the world’s most cited scientists
20.11.2024 - For the seventh year in a row, scientists from the Potsdam Institute for Climate Impact Research (PIK) are represented in the top 1 percent of the “Highly Cited Researchers”. The prestigious ranking, released by Clarivate Analytics' Web of Science platform, is determined by the frequency with which scientists' papers are cited by other researchers — a measure of global scientific impact. The 2024 edition features ten PIK researchers from different research departments, including PIK Director Johan Rockström.
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25 of 35 planetary vital signs at record extremes: 2024 State of the Climate Report
08.10.2024 - More frequent and intense extreme weather events, fossil fuel emissions at an all-time high: a new report led by an international team of scientists, including Johan Rockström and Stefan Rahmstorf of Potsdam Institute of Climate Impact Research, states that climatic conditions have further worsened. The report analyzes the latest trends in a wide array of planetary vital signs. It also reviews recent climate-related disasters, spotlights climate-related topics, and discusses needed policy interventions.
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Earth exceeds safe limits: First Planetary Health Check issues red alert
24.09.2024 - The Planetary Boundaries Science (PBScience), a new initiative led by PIK director Johan Rockström and the Potsdam Institute for Climate Impact Research (PIK), supported by the Planetary Guardians and other partners, has launched the Planetary Health Check (PHC), a first-of-its-kind scientific report and tool for the health of the Earth’s vital organs that serve as humanity’s life support system. The PHC combines pioneering Earth science, Earth observation data and multi-disciplinary thinking to quantify the planet’s health and inform solutions to reverse the impact of human activity on the planet.
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Achieving prosperity for planet and people requires fair resource sharing and addressing inequality: New Earth Commission study
12.09.2024 - It remains possible for all humans to escape poverty and be safe from harm caused by Earth system change, but urgent global transformations are needed, shows new research co-authored by Johan Rockström, Director of the Potsdam Institute for Climate Impact Research (PIK). The concept of the ‘Safe and Just Space’— the zone where humans can thrive without destabilizing the planet— is shrinking rapidly. The poorest are currently the most vulnerable, yet everyone is increasingly at risk, according to the study published in The Lancet Planetary Health.
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Tipping risks from overshooting 1.5 °C can be minimised if warming is swiftly reversed
01.08.2024 - Current climate policies imply a high risk for tipping of critical Earth system elements, even if temperatures return to below 1.5 °C of global warming after a period of overshoot. A new study published in Nature Communications indicates that this risk can be minimised if the warming is swiftly reversed. That is why reducing emissions in the current decade is crucial for the stability of the Earth systems functions, researchers from the Potsdam Institute for Climate Impact Research (PIK), the International Institute for Applied Systems Analysis (IIASA) and other institutes write. They analysed the tipping risks for four interconnected core climate tipping elements: the Greenland Ice Sheet, the West Antarctic Ice Sheet, the Atlantic Meridional Overturning Circulation (AMOC), and the Amazon Rainforest.
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From ocean currents to the energy transition: thousands visit PIK for Potsdam Science Day
04.05.2024 - Under the motto "Research. Discover. Join in.", the Potsdam Institute for Climate Impact Research (PIK), together with the other Telegrafenberg institutes, hosted this year's Potsdam Science Day. On the first Saturday in May 6,200 interested visitors came to find out about the work of researchers at PIK at information stands, lectures and hands-on experiments in the sunshine and spring-like temperatures.
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Girls' Day 2024 at PIK: Exciting insights into climate research
25.04.2024 - More than 15,000 options, around 135,000 spots available across Germany, more schoolgirls than ever before: this year's Girls' Day has set new records. At the Potsdam Institute for Climate Impact Research (PIK), 19 girls from Berlin and Brandenburg had the opportunity to take an exclusive look behind the scenes at the institute.
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PIK research among most cited papers in policy documents worldwide
19.04.2024 - Three research papers conducted by PIK director Johan Rockström are among the top ten most cited papers in policy documents. This is according to an analysis of data provided to the journal Nature.
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Stefan Rahmstorf honoured with Alfred Wegener medal
17.04.2024 - Stefan Rahmstorf, co-head of the research department on Earth System Analysis of the Potsdam Institute for Climate Impact Research (PIK), receives the renowned Alfred Wegener Medal & Honorary Membership by the European Geosciences Union (EGU).
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Overview article - Is the Atlantic Overturning Circulation Approaching a Tipping Point?
11.04.2024 - Studies show that the Atlantic Meridional Overturning Circulation (AMOC) has already weakened as a result of anthropogenic climate change and is possible moving towards a tipping point. This current has a significant influence on climate, particularly in Europe. Stefan Rahmstorf, head of the Earth System Analysis research department at the Potsdam Institute for Climate Impact Research (PIK), outlines the current state of research in a new overview article in the scientific journal Oceanography.
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From knowledge to action: "10 Must Knows" as a guide to preserving biodiversity
25.03.2024 - From as yet undiscovered biodiversity to resilient forests and the impact of food consumption on nature: 64 experts have now published their knowledge and recommendations in the form of "10 Must Knows from Biodiversity Science" for 2024. The Leibniz Research Network Biodiversity's new report provides policymakers and society with concrete ways to effectively conserve and sustainably use biodiversity at the local, national, and European levels and thereby also mitigate climate change. With this publication, the researchers contribute current scientific facts to the debate on the German National Biodiversity Strategy, which is to be adopted before the next United Nations Biodiversity Conference in autumn 2024.
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Earth’s freshwater cycle out of stable state
04.03.2024 - Human activity has pushed variation in the planet’s freshwater cycle well outside of its pre-industrial range. An international research team, including scientists from the Potsdam Institute for Climate Impact Research (PIK) and PIK Director Johan Rockström, found that the planetary boundary for freshwater was surpassed by the mid-twentieth century.
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From Planetary Boundaries to Global Commons: “PIK Research Days” with latest science update
15.02.2024 – From planetary boundaries and tipping points to global commons and the economic implications of climate change, from methods like integrated assessment modeling or machine learning to the science-policy interface: The Potsdam Institute for Climate Impact Research gathered for its traditional in-house conference, the “PIK Research Days”. The two-day event was packed with talks, panel discussions and elevator pitches about current and planned research.
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Amazon rainforest at the threshold: loss of forest worsens climate change
14.02.2024 - The Amazon rainforest could approach a tipping point, which could lead to a large-scale collapse with serious implications for the global climate system. A new Nature study by an international research team including scientists from the Potsdam Institute for Climate Impact research (PIK) reveals that up to 47 percent of the Amazonian forest is threatened and identifies climatic and land-use thresholds that should not be breached to keep the Amazon resilient.
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Covid-19, climate change, armed conflicts: world’s crises can lead to interconnected polycrisis
17.01.2024 – The world is currently experiencing a worsening polycrisis, caused by an entanglement and nonlinear amplification of many of the world’s crises, like the Covid-19 pandemic, climate change and armed conflicts such as Russia’s war on Ukraine. This is the result of a new paper authored by an international team of scientists, including PIK Director Johan Rockström. The researchers establish a substantive definition for a polycrisis and deliver a theoretical framework to better understand and address the entangled driving mechanisms behind contemporary global crises.
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Resonant planetary waves contributed to Pacific Northwest Heat Dome event of 2021
17.01.2024 - Recent decades have witnessed unprecedented heat waves with severe repercussions for human society. However, the causes for the extremity of some of these heat events are not yet understood. Researchers from the University of Pennsylvania and the Potsdam Institute for Climate Impact Research (PIK) now show, that the severe 'heat dome' incident in the north-western region of the US in 2021 was partly caused by the quasi-resonant amplification of planetary waves, a theory originally developed by the late renowned PIK scientist Vladimir Petoukhov. Published in the Proceedings of the National Academy of Sciences PNAS today, the findings hold the potential for more skillful predictions of potentially devastating future weather extremes.
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4 of the 10 climate science papers most referred to in news and social media authored by PIK researchers
10.01.2024 - 4 of the top 10 peer-reviewed climate science papers most referred to in news and social media in 2023 featured authors from the Potsdam Institute for Climate Impact Research (PIK), a ranking by the website Carbon Brief based on Altmetric scores reveils. Altmetric tracks how often research papers from academic journals are mentioned in online news media, blogs or on social media platforms. The metric is an indicator for public perception of scientific publications.
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More rain, fewer droughts – rainfall effects from targeted forestation can reduce climate change
10.01.2024 - By prioritizing increases in rainfall, forestation programs may not only mitigate global climate change itself but also reduce its concrete negative effects such as droughts. That is the conclusion of a new study by a team of researchers including the Potsdam Institute for Climate Impact Research (PIK).
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500+ pages, 200+ researchers: Global Tipping Points Report delivers comprehensive assessment of tipping point risks and societal opportunities
06.12.2023 - Tipping points pose some of the biggest risks to our planet’s life-support systems and the stability of our societies. In an unprecedented effort by the scientific community, researchers have now published a comprehensive report on Earth system tipping points and their potential impacts and opportunities for societal change. More than 200 scientists from around the world contributed to the ‘Global Tipping Points Report’. The report with more than 500 pages provides an authoritative guide to the state of knowledge on tipping points, explores opportunities for accelerating much needed transformations, and outlines options for a new governance of tipping point risks and opportunities.
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Highly Cited: PIK scientists among top 1% of the world's most cited researchers
11/15/2023 – For the sixth year in a row, numerous researchers from the Potsdam Institute for Climate Impact Research (PIK) are among the top 1 percent of the renowned “Highly Cited Researchers” worldwide. The influential ranking, published by Clarivate Analytics' science platform Web of Science, is based on the number of times scientists' papers are cited by other researchers – a very important indicator of scientific relevance. The 2023 edition includes eight PIK researchers from different research departments, also PIK Director Johan Rockström.
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Novel perspectives on cross-border cascading climate change impacts and systemic risks
10/27/2023 – Transitioning towards climate-adaptive and resilient societies – that was the overarching aim of the conference “Cross-border climate change impacts and systemic risks in Europe and beyond” at Potsdam-Institute of Climate Impact Research (PIK). For three days in mid-October, 150 scientists from all over the world came together across disciplines to better understand and respond to the emerging topic of cross-border climate impacts and risks.
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