Editor’s choice
This study examines national mitigation pledges presented at the 2015 Paris climate summit, relative to equity benchmarks and 1.5 °C-compliant global mitigation.
The authors quantify each country’s range of fair shares of 1.5 °C-compliant mitigation and contrasts that with national 2025/2030 mitigation pledges. It reveals a large global mitigation gap, within which wealthier countries’ mitigation pledges fall far short, while poorer countries’ pledges collectively meet their fair share.
The authors identify twofold obligations for all countries in a justice-centred implementation of 1.5 °C-compliant mitigation: unsupported domestic reductions and engagement in deep international mitigation cooperation. The latter can be accomplished through provision of international financial and other support, or through undertaking additional supported mitigation activities.
Consequently, an equitable pathway to 1.5 °C can only be imagined with such large-scale international cooperation and support; otherwise, 1.5 °C-compliant mitigation will remain out of reach, impose undue suffering on the world’s poorest, or both.
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Perspective / El científico Senior de SEI, Sivan Kartha, se unió a una conversación con activistas climáticos Greta Thunberg y Luisa Neubauer. Estas son sus observaciones.
Perspective / SEI Senior Scientist Sivan Kartha recently joined a conversation with youth climate activists Greta Thunberg and Luisa Neubauer. These are his remarks.
Journal article / This letter to the editor in Nature Climate Change details the methodological shortcomings of an article on equitable mitigation.
