Biying Yu

Abstract Climate change and ozone change are two major channels through which climate policies influence agricultural production, yet most studies assess climate or ozone in isolation, which can limit the accuracy of estimated climate policy effects. Here we use an integrated model to quantify how carbon neutrality policies pledged by 153 countries affect yields of maize, rice, soybean and wheat and the associated economic outcomes.

Abstract Achievement of national climate targets and the corresponding costs would entirely depend on regional actions within the country. However, because of substantial inequalities and heterogeneities among regions, especially in developing economies, aggressive or uniform actions may exacerbate inequity and induce huge economic losses, which in turn challenges the national climate pledges.

Abstract A strategy that informs on countries’ potential losses due to lack of climate action may facilitate global climate governance. Here, we quantify a distribution of mitigation effort whereby each country is economically better off than under current climate pledges. This effort-sharing optimizing approach applied to a 1.5 °C and 2 °C global warming threshold suggests self-preservation emissions trajectories to inform NDCs enhancement and long-term strategies.