- Nov 2023
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climatetippingpoints.info climatetippingpoints.info
Tags
- Triggering Climate Tipping Points
- Arctic Winter Sea Ice
- Boreal Permafrost
- expert: David Armstrong McKay
- East Antarctic Ice Sheet
- Barents Sea Ice
- Labrodor Sea/Subpolar Gyre
- Amazon Rainforest
- Atlantic Meridional Overturning Circulation
- East Antarctic Subglacial Basins
- Boreal Forest
- process: coral bleaching
- topic: tipping points
- Extra-Polar Mountain Glaciers
- Low-Laitude Coral Reefs
- Greenland Ice Sheet
- West Antarctic Ice Sheet
- Sahel/West African Monsoon
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Zwei neue Studien zeigen, dass in Grönland sowohl kleinere Gletscher außerhalb des großen Eisschilds als auch das Schelfeis viel schneller abschmelzen als im vergangenen Jahrhundert. Das Schelfeis s im Norden Grönland hat seit 1978/35% seines Volumens verloren. Wenn Abschnitte des shelf Eis kollabieren, was in diesem Jahrhundert bereits dreimal der Fall war, verdoppelt sich die Abschmelzgeschwindigkeit der Gletscher dahinter.
https://www.nytimes.com/2023/11/09/climate/greenland-glaciers-ice-melt.html
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- expert: Twila Moon
- region::Greenland
- expert: Laura Larocca
- process: sea level rise
- 2023-11-09
- process: glacier melting
- expert: Romain Millan
- institution: National Snow and Ice Data Center at the University of Colorado
- expert: Ginny Catania
- expert: Yarrow Axford
- expert: Anders Bjork
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- Sep 2023
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docdrop.org docdrop.org
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our latest science at the Potsdam Institute shows that the Greenland Ice Sheet is connected to the West Antarctic Ice Sheet over the ocean circulation of heat. And that the whole AMOC, the North Atlantic overturning of heat, is slowing down because of the release of cold fresh water from the Greenland Ice Sheet. And when that slows down it locks in more warm surface water, saline surface water, in the Southern Ocean. 00:13:55 Which can explain why Antarctica is melting more rapidly than predicted.
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for: cascading tipping points, cascading tipping points - Greenland - AMOC - Antarctica
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highlights
- latest research at PIK shows that the two poles are connected via the AMOC current.
- Greenland ice sheet melt releasing cold fresh water is slowing down the North Atlantic overturning of heat.
- The slowdown is keeping more warm saline water in place in the Southern Ocean, accelerating melting of the Antarctic ice sheet.
- latest research at PIK shows that the two poles are connected via the AMOC current.
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- Aug 2023
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www.liberation.fr www.liberation.fr
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In Grönland tritt die Mehrheit der Bevölkerung für die Unabhängigkeit von Dänemark ein. Man sieht Chancen, den Bergbau zu entwickeln, da Grönland über viele Bodenschätze verfügt, die für erneuerbare Energien wichtig sind. Wichtig für das Land ist auch das Abschmelzen des Nordpolareises, durch das neueSschifffahrtsrouten möglich werden. Dänemark fördert die Unabhängigkeit bisher nicht.
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www.liberation.fr www.liberation.fr
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In Grönland ist die Bevölkerung gezwungen, sich extrem schnell an die globale Erhitzung anzupassen, die am Polarkreis viermal so schnell verläuft wie im globalen Durchschnitt. Manche Verantwortliche verstehen sich als Pioniere der Klima-Anpssung. Dazu gehören intensive Forschung, Umstellung und Entwicklung von Branchen. Traditionelle Lebensformen wie jahreszeitliches Nomadentum können Vorbildcharakter für andere Regionen haben. Reportage in der Libération.
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- Jul 2023
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www.liberation.fr www.liberation.fr
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Eine Sedimentprobe aus Grönland belegt, das vor 400.000 Jahren 20-70% der Eiskappe geschmolzen waren. Dieser Abschmelzvorgang erhöhte den Meeresspiegel um 1,4 bis 5,5m. Genauere Analysen und weitere Untersuchungen versprechen Aufschlüsse darüber, um wieviel der Meeresspiegel noch in diesem Jahrhundert aufgrund der globalen Erhitzung ansteigen wird. https://www.liberation.fr/environnement/pourquoi-la-fonte-des-glaces-du-groenland-il-y-a-400-000-ans-nous-concerne-20230721_ZVQ7A45HLVHZLDB5JTFOR5EEEY/
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- Apr 2023
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www.theguardian.com www.theguardian.com
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Zusammenfassender Bericht der EU über die Folgen der globalen Erhitzung in Europa im vergangenen Jahr. Europa erwärmt sich von allen Kontinenten am schnellsten. Die Menschen in Südeuropa waren über 100 Tage extender gute ausgesetzt. 2022 war das trockenste Jahr der ausgezeichneten Wettergeschichte, und es hatte den mit Abstand heißesten Sommer. https://www.theguardian.com/environment/2023/apr/20/frightening-record-busting-heat-and-drought-hit-europe-in-2022
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- expert: Carlo Buontempo
- institution: C3S
- region: Europe
- impact: reduced crop production
- impact: heat death
- expert: Mauro Facchini
- expert: Daniela Schmidt
- Region: arctic
- process: glacier melting
- Region: Greenland
- Region: Antarctica
- expert: Rebecca Emerton
- process: ice sheet loss
- year: 2022
- process: increase of draughts
- expert: Andrew Shepherd
- process: increase of heat waves
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insideclimatenews.org insideclimatenews.org
- Oct 2022
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www.flickr.com www.flickr.com
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In a recent paper published in Nature Climate Change, scientists found that major sea-level rise from the melting of the Greenland ice cap is now ‘inevitable’ even if the burning of fossil fuels were to halt overnight. Using satellite observations of Greenland ice loss and ice cap from 2000 to 2019, the team found the losses will lead to a minimum rise of 27 cm regardless of climate change.
A great example of the lag that large, complex systems exhibit when responding to significant input changes.
Lag is something that humans are woefully weak at recognizing and understanding. This, and other systems concepts are what we need to add to the curriculum at all levels of education, to change this very significant shortcoming of "common knowledge".
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- Oct 2021
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ourworldindata.org ourworldindata.org
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Coronavirus Pandemic Data Explorer. (n.d.). Our World in Data. Retrieved March 3, 2021, from https://ourworldindata.org/coronavirus-data-explorer
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