Geological Net Zero and responsibility for the protection of land and ocean carbon sinks

Nov 4, 2025

In 2024, the authors of the 2009 “net zero papers” published an article in Nature entitled “Geological Net Zero and the need for disaggregated accounting for carbon sinks”. The authors argued that halting global warming must include geological net zero, which means that for every tonne of CO2 emitted from fossil sources, one tonne is permanently stored in geological formations. They also argued that the biosphere cannot be relied on to indefinitely absorb emissions because of the increasing stresses and demands on it.

This piece is a short summary of the 2024 Nature article written by four of the article authors: Myles Allen, Stuart Jenkins (University of Oxford), Glen Peters (CICERO Center for International Climate Research) and Pierre Friedlingstein (Faculty of Environment, Science and Economy, University of Exeter).

The 2009 “net zero papers” were Solomon et alMeinshausen et alAllen et alMatthews et alZickfeld et al, and Gregory et al.

Publication details
Theme(s)
Carbon dioxide removal The meaning of net zero The urgency of zero
Type(s)
Research paper
Author(s)
Allen, Myles Jenkins, Stuart
Year(s)
2025
Global Carbon Budget, Oxford Net Zero

Latest news

Five members of Oxford Net Zero to serve as IPCC authors
Five members of Oxford Net Zero to serve as IPCC authors

We're delighted to announce that five members of Oxford Net Zero have been named as authors on forthcoming reports from the Intergovernmental Panel on Climate Change (IPCC). Dr Steve Smith, our Executive Director, has been named as a Lead ... Read more

Kaya Axelsson named one of the UK’s 100 most impactful sustainability leaders
Kaya Axelsson named one of the UK’s 100 most impactful sustainability leaders

We're delighted to announce that Kaya Axelsson, our Net Zero Policy Engagement Fellow, has been named by edie as one of the UK's 100 most impactful sustainability leaders. Edie is a prominent UK business, media and publishing network that ... Read more

Building Momentum on Serviced Emissions: Oxford Net Zero’s Client Workshops
Building Momentum on Serviced Emissions: Oxford Net Zero’s Client Workshops

By Siddharth Shekhar Yadav and Alexis McGivern.   How can client leadership across professional services help unlock credible net-zero progress? This question is at the heart of our upcoming workshop at the University of Oxford ... Read more

See more news and events