Defining ‘pre-industrial’: The UN Paris Agreement aims to ensure increases in global temperature are < 2°C above pre-industrial levels. However, the starting line of the pre-industrial era is not defined by the UN, or by the IPCC. A new analysis aims to better define the pre-industrial baseline.

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Defining ‘pre-industrial’: The UN Paris Agreement aims to ensure increases in global temperature are < 2°C above pre-industrial levels. However, the starting line of the pre-industrial era is not defined by the UN, or by the IPCC. A new analysis aims to better define the pre-industrial baseline.