Political Science > Environmental Policy

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Sidra Rehman and Laura Jaramillo
Do weather shocks worsen conflict around the world? To answer this question, this paper uses an innovative dataset created by using georeferencing to match weather and conflict data at the subregional level on a monthly frequency across 168 countries over 2013 to 2022.The empirical results show that higher temperature exacerbate conflict where it already exists. Estimations indicate that, in a high emissions scenario and all else equal, by 2060 conflict deaths as a share of the population for a median country facing conflict could increase by 12.3 percent due to rising temperatures. These findings underscore the importance of integrating climate resilience into peace and security efforts and designing climate adaptation policies that support conflict prevention and resolution.
Nordine Abidi, Mehdi El Herradi, Boriana Yontcheva, and Ananta Dua
This paper investigates the effects of climate shocks on inflation and monetary policy in the Middle East and Central Asia (ME&CA) region. We first introduce a theoretical model to understand the impact of climate risks on headline and food inflation. In particular, the model shows how climate shocks could affect the path of policy rates through food prices. We then use local projections to estimate the impact of climate shocks on headline and food inflation. The results show that price stability is more easily achievable under positive climate conditions. Overall, our findings shed new light on the importance of considering climate-related supply shocks when designing monetary policy, particularly in countries where food makes up a significant part of the CPI-basket.
Daniel Garcia-Macia, Waikei R Lam, and Anh D. M. Nguyen
Managing the climate transition presents policymakers with a tradeoff between achieving climate goals, fiscal sustainability, and political feasibility, which calls for a fiscal balancing act with the right mix of policies. This paper develops a tractable dynamic general equilibrium model to quantify the fiscal impacts of various climate policy packages aimed at reaching net zero emissions by mid-century. Our simulations show that relying primarily on spending measures to deliver on climate ambitions will be costly, possibly raising debt by 45-50 percent of GDP by 2050. However, a balanced mix of carbon-pricing and spending-based policies can deliver on net zero with a much smaller fiscal cost, limiting the increase in public debt to 10-15 percent of GDP by 2050. Carbon pricing is central not only as an effective tool for emissions reduction but also as a revenue source. Delaying carbon pricing action could increase costs, especially if less effective measures are scaled up to meet climate targets. Technology spillovers can reduce the costs but bottlenecks in green investment could unwind the gains and slow the transition.
Samuel Pienknagura
Curbing carbon emissions to meet the targets set in the Paris Agreement requires the deployment of low carbon technologies (LCTs) at a global scale. This paper assesses the role of climate and trade policies in fostering LCT diffusion through trade. Leveraging a comprehensive database of climate policies and a new database identifying trade in low carbon technologies and the tariffs applied to these goods, this paper shows that the introduction of new climate policies has a positive and significant impact on LCT imports. Zooming into specific climate policies, the paper finds that, except for non-binding ones, all climate policies stimulate LCT imports. The paper also highlights the role of trade policies as an engine of LCT diffusion—reductions in tariffs applied on LCT goods have a sizeable impact on LCT imports. On the flip side, results suggest that more protectionist measures would impede the spread of low-carbon technologies.
Jean-Marc Fournier, Tannous Kass-Hanna, Liam Masterson, Anne-Charlotte Paret, and Sneha D Thube
We quantify cross-border effects of the recent climate mitigation policies introduced in Canada and the U.S., using the global general equilibrium model IMF-ENV. Notably, with the substantial emission reductions from Canada’s carbon tax-led mitigation policies and the U.S.’ Inflation Reduction Act, these two countries would bridge two-thirds of the gap toward their Nationally Determined Contribution (NDC) goals. While the broadly divergent policies are believed to elicit competitiveness concerns, we find the aggregate cross-border effects within North America to be very limited and restricted to the energy intensive and trade exposed industries. Potential carbon leakages are also found to be negligible. A more meaningful difference triggered by policy heterogeneity is rather domestic, especially with U.S. subsidies increasing energy output while the Canada model with a carbon tax would marginally decrease it. This analysis is complemented by a stylized model illustrating how such divergence can affect the terms of trade, but also how these effects can be countered by exchange rate flexibility, border adjustments or domestic taxation.
Simon Black, Ruud de Mooij, Vitor Gaspar, Ian W.H. Parry, and Karlygash Zhunussova