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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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2023 SkS Weekly Climate Change & Global Warming News Roundup #49

Posted on 9 December 2023 by John Hartz

A chronological listing of news and opinion articles posted on the Skeptical Science  Facebook Page during the past week: Sun, Dec 3, 2023 thru Sat, Dec 9, 2023.

Story of the Week

Interactive: The pathways to meeting the Paris Agreement’s 1.5C limit

The Paris Agreement’s long-term goal of keeping warming “well below” 2C and aiming to limit it to 1.5C is the global benchmark for climate action.

It was conceived to avoid the worst impacts of global temperature rise and minimise the risks – and costs – of reaching even higher warming levels.

Yet, the world is currently on a path to warming that is double the aspirational 1.5C limit. Continuing mitigation efforts in line with existing climate policies would see a 66% chance of warming reaching 3C this century.

In its 2022 report, the Intergovernmental Panel on Climate Change (IPCC) explored thousands of possible climate futures – including those that do limit warming to 1.5C, both with and without a temporary temperature “overshoot”.

These different modelled pathways provide insights into possible future greenhouse gas (GHG) emissions and temperature trajectories, depending on the many choices that global society makes.

The interactive below unpacks what future levels of emissions could mean for global average temperatures, if – or when – the Paris Agreement’s 1.5C limit might be breached, and, in some cases, by how much and for how long. 

Click here to access the entire article as originally posted on the Carbon Brief website.

Interactive: The pathways to meeting the Paris Agreement’s 1.5C limit by Uta Kloenne, Dr Debbie Rosen, Gaurav Ganti, Dr Alexander Nauels, Dr Carl-Friedrich Schleussner, Prof Joeri Rogelj, Prof Piers Forster & Robert McSweeney, Carbon Brief, Dec 8, 2023

Articles posted on Facebook 

Sunday, Dec 3, 2023

Monday, Dec 4, 2023

Tuesday, Dec 5, 2023

Wednesday, Dec 6, 2023

Thursday, Dec 7, 2023

Friday, Dec 8, 2023

Saturday, Dec 9, 2023

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