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Overshooting 1.5°C: even temporary warming above globally agreed temperature limit could have permanent consequences

By Paul Dodds, Professor of Energy Systems, UCL

Earth’s surface temperature has been 1.5°C hotter than the pre-industrial average for 21 of the last 22 months.

The 2015 Paris agreement committed countries to keeping the global temperature increase “well below 2°C”, which is widely interpreted as an average of 1.5°C over a 30-year period. The Paris agreement has not yet failed, but recent high temperatures show how close the Earth is to crossing…

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