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Interactive: The impacts of climate change of 1.5C, 2C and beyond

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Interactive: The impacts of climate change of 1.5C, 2C and beyond

Carbon Brief has extracted data from around 70 peer-reviewed climate studies to show how global warming is projected to affect the world and its regions.

Scroll down to see how these impacts vary at different temperature levels, across a range of key metrics. Click on the icons below to skip to specific categories and regions.

Data compiled by Robert McSweeney. Interactive by Rosamund Pearce with help from Tom Prater. Licensed under Creative Commons. Videos courtesy of Getty Images.

Methodology

Relevant peer-reviewed journal papers were initially identified and collated by including those from Carbon Brief articles and Daily Briefings. This was then extended by identifying special journal issues and collections focused on 1.5C. Next, using Scopus – the world’s largest abstract and citation database of peer-reviewed literature – a search was carried out for any journal paper that mentions “1.5” in its title, abstract or keywords.

In total, around 150 journal papers were identified. The vast majority were published in 2018, but some were also from 2017 and 2016.
These were then read to extract useful data. Not all studies could be used. For example, the basic requirements to include a study in this article is that it considers at least one impact of climate change at 1.5C and 2C of warming. Some papers, for example, only looked at 1.5C. If a study also included an additional temperature level, that information is also used. If more than one study covered the same impact, then the study that covered the widest range of regions and/or warming levels was used. In total, results were used from just under half of the papers identified.

To be used in this article, each impact of climate change needed to be able to be summarised as numbers – rather than, say, charts or maps. If numbers were not available in a paper or its supplementary data then Carbon Brief contacted the corresponding author to ask for the data directly. If an uncertainty range is given, then this was used as well and presented in the article (in brackets alongside the main result).

All the findings were then divided up across 10 categories and seven regions of the world, plus global data. China was given its own category because there were a number of studies specific to the country.

The data presented in this article can also be accessed in this spreadsheet.
 
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