Legislation

In order to align with their international commitments, including the Paris Agreement, some governments have mandated scientists or established independent scientific bodies to assess what would be a fair and ambitious emissions targets.

Our studies directly informed the emissions targets of the United Kingdom, and of the state of Victoria, Australia. We also worked on an update to the methodology used to inform the emissions targets of C40 cities.

United Kingdom

The Climate Change Committee (CCC) is an independent body providing scientific advice on how emissions objectives for the UK to align with the Paris Agreement goals.

In Figure 3.9 of the report “Net Zero - The UK's contribution to stopping global warming“ (2019), the CCC compares the ambition of the net-zero objective for 2050 to emissions allocations based on various equity considerations from our 2017 study published in Nature Climate Change (see the country page for more details). This objective was adopted by the UK.

In Figure B7.2 of the report “The Sixth Carbon Budget - The UK’s path to Net Zero“ (2020), the CCC explains that an objective of 68% emissions reduction, below 1990 levels can be seen as a fair contribution against several concepts of fairness, based on our study (2016). This recommendation of a 68% emissions reduction was adopted by the UK and represented a progress from the previous 57% objective for 2030.

State of Victoria, Australia

The government of the state of Victoria, Australia, commissioned a report to assess the ambition of possible interim emissions targets for 2030, as part of an Independent Expert Panel review. Our report “Greenhouse gas emissions budgets for Victoria“ (2018) determines emissions budgets and interim 2030 emissions objectives of Australian states to contribute to a fair share of the emissions budgets calculated for Australia by independent Climate Change Authority, based on our 2017 study published in Nature Climate Change (see the country page for more details).

Following this consultation, the government of Victoria adopted an emissions reduction objective of 45 to 50% for 2030, compared to 2005 levels.

C40 cities

C40 is a global network of mayors of nearly 100 cities to confront the climate crisis.