Avsnitt
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Huge climate change coming up, if we continue business as usual. The ocean current system, the AMOC, keeps Europe in a relatively mild climate. But the currents show signs of tipping to a dormant state already at mid-century. Peter Ditlevsen, the University of Copenhagen.
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Ice sheets, ocean current systems, and other slowly reacting climate subsystems can be saved after having crossed their tipping points. Paul Ritchie, University of Exeter, on tipping and temperature overshoot.
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Saknas det avsnitt?
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In this TiPES-podcast, we try to reach an intuitive understanding of climate tipping - not least rate-induced tipping which is when the speed of climate change tilts the system in an irreversible manner. Our guest is Professor Peter Ashwin from the University of Exeter, UK. Peter Ashwin was one of the discoverers of rate-induced tipping in 2012.
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A study in Science indicates that we should reconsider the idea of irreversible abrupt climate change, known as climate tipping. The climate system is more likely to change in smaller steps that might be reversed if we act quickly enough, the authors argue. Robbin Bastiaansen from the Unversity of Utrecht in The Netherlands explains.
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It is important to understand the risk of tipping points under the current climatic situation. To help increase scientific focus on this subject, Thomas Stocker, University of Bern, Switzerland hopes the IPCC will reserve a chapter in the next assessment report to tipping points in the Earth system.
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Severe droughts are becoming more frequent in the Amazon rainforest and not only damage the forest but also impact the lives of millions in the area negatively. Niklas Boers from Potsdam Institute for Climate Impact Research explains how it is now possible to forecast these droughts up to 18 months in advance.
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It has long been suspected that the repeated abrupt spikes of heating which took place during the ice ages (Dansgaard-Oeschger events) impacted most parts of the world. Now it has been confirmed by data. Sune Olander Rasmussen from the NIels Bohr Institute explains the finding, published today in Science.
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In 2015 Sune Olander Rasmussen from the Niels Bohr Institute was left with a small a few colleagues on the ice sheet of Renland in Eastern Greenland. Their job was to point out the best spot to drill ice which could be used for calibrating temperatures in other ice samples.
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How much will temperatures go up, if we double the amount of CO2 in the atmosphere? That has turned out to be a tricky question to answer scientifically. In this podcast, climate scientist Anna von der Heydt explains how initial conditions turn out to be important for getting the right answer: When the Earth system is in a cold state it does not react to a doubling as it does in a warm state. Which state are we in now, then?
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