Equity in allocating carbon dioxide removal quotas

Carlos Pozo, Ángel Galán-Martín, David Reiner, Niall Dowell () and Gonzalo Guillén-Gosálbez ()
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Carlos Pozo: Imperial College London
Ángel Galán-Martín: ETH Zürich
Niall Dowell: Imperial College London
Gonzalo Guillén-Gosálbez: ETH Zürich

Nature Climate Change, 2020, vol. 10, issue 7, 640-646

Abstract: Abstract The first nationally determined contributions to the Paris Agreement include no mention of the carbon dioxide removal (CDR) necessary to reach the Paris targets, leaving open the question of how and by whom CDR will be delivered. Drawing on existing equity frameworks, we allocate CDR quotas globally according to Responsibility, Capability and Equality principles. These quotas are then assessed in the European Union context by accounting for domestic national capacity of a portfolio of CDR options, including bioenergy with carbon capture and storage, reforestation and direct air capture. We find that quotas vary greatly across principles, from 33 to 325 GtCO2 allocated to the European Union, and, due to biophysical limits, only a handful of countries could meet their quotas acting individually. These results support strengthening cross-border cooperation while highlighting the need to urgently deploy CDR options to mitigate the risk of failing to meet the climate targets equitably.

Date: 2020
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DOI: 10.1038/s41558-020-0802-4

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