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.

国家对《巴黎协定》作出的第一个国家贡献没有提及达到巴黎目标所必需的二氧化碳清除（CDR），这留下了如何以及由谁提供CDR的问题。利用现有的权益框架，我们根据责任，能力和平等原则在全球范围内分配CDR配额。然后在欧盟范围内通过考虑CDR选项组合的国内能力来评估这些配额，这些选项包括具有碳捕获和存储，重新造林和直接空气捕获的生物能源。我们发现配额因原则而异，从33 GtCO ₂到325 GtCO ₂分配给欧洲联盟，并且由于生物物理限制，只有少数几个国家可以达到各自行事的配额。这些结果支持加强跨境合作，同时强调需要紧急部署CDR选项，以减轻未能公平实现气候目标的风险。