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Open research questions in Climate Change Policy and Economics

324 gap statements mined from Climate Change Policy and Economics papers in our 7.9M-paper local library, which holds 4,290 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • Future research could investigate whether right-wing populist parties have actively reinforced perceptions of unequal treatment and opposition to environmental policies in rural areas. Lastly, future work could examine the broader question of whether perceptions of unequal treatment by the state affect support for governments’ environmental policies beyond carbon taxation.

    Unequal treatment perceptions and rural backlashes against carbon taxation · 2026 · DOI

  • The gap is in understanding how the periodic dynamics of environmental degradation are influenced by policy parameters. There is a need to construct a careful alignment between the border of the no-tax area and the level of taxation.

    Dynamic analysis of degradation thresholds for sustainable environmental management · 2026 · DOI

  • These approaches do not consider fuzzy representations of equity principles, such as responsibility, capacity, population, and innovation. The gap is the lack of a methodological framework that can handle the complexity and uncertainty of climate finance allocation.

    Advancing the NCQG: A Fuzzy Multi-Criteria Model for Evaluating National Contributions to Climate Finance · 2026 · DOI

  • Future research could consider the impact of government policies on heterogeneous firms, such as those with differing levels of technological innovation capability.

    Research on government carbon allowance allocation mechanism from the perspective of the differential game · 2026 · DOI

  • Other ETS-covered sectors—iron and steel, cement, refining, chemicals—differ in free allocation, exposure to carbon leakage and the availability of low-carbon substitutes, and the estimates should not be extrapolated to them; whether the complementarity between price and commitment holds where no equivalent of a phase-out commitment exists is an open question that bears directly on the design of ETS2.

    Carbon Pricing and Coal Displacement in the European Union: Complementarity Between Price Signals and Phase-Out Commitments, 2005–2024 · 2026 · DOI

  • A well-documented NDC does not inevitably translate into stronger mitigation targets, just as quantitively strong NDC targets may be accompanied by limited evidence of how such targets were determined.

    Assessing processes and evidence for highest possible ambition in Nationally Determined Contributions under the Paris Agreement · 2026 · DOI

  • Second, there is insufficient integration between the public and private sectors, with most ESG efforts concentrated in large corporations and less engagement from local authorities.

    The Role of ESG in Driving Sustainable Innovation in Water Sector: From Gaps to Governance · 2025 · DOI

  • Funding Although CCS and BECCS are considered important technologies to bring countries in alignment with net-zero and net-negative emissions targets, they remain controversial in part for their ability to extend the extraction and combustion of fossil fuels.

    Risking delay: the storylines of (bioenergy with) carbon capture and storage in Swedish parliamentary discourse · 2025 · DOI

  • While the importance of embedding Sustainable Development Goal 5 (SDG5) gender equality considerations into climate change action is increasingly recognized, there is a gap in understanding how the VCM may impact SDG5 because previous research has explored the integration of gender equality and the VCM in specific cases or focused on individual standards.

    Gender (In)Equality in the Voluntary Carbon Market · 2025 · DOI

  • The empirical evaluations about how China’s regional ETSs affect industrial process-related CO2 emissions and how the effects vary by sectoral coverage are rarely seen and warrant further study.

    Carbon Abatement and Leakage in China’s Regional Carbon Emission Trading · 2024 · DOI

  • This research agenda has outlined how affective polarization may represent a critical yet underexplored mechanism reinforcing carbon lock-in across advanced democracies.

    Revisiting the Carbon Lock-In: Outlining an Agenda on How Affective Polarization Constrains Climate Policy Making · 2026 · DOI

  • The defensible conclusion is methodological and substantive: approvals are sparse, occur upstream from implementation, and are weak proxies for the date and scale of realized resilience investment.

    From Climate-Finance Approval to Measurable Resilience in Latin America and the Caribbean: Dynamic Panel Evidence and Small-Sample Robustness · 2026 · DOI

  • Thus, the applicability of the “one-category-one-strategy” approach to marginal industries remains to be verified.

    Paths for low-carbon transformation in heavily polluting manufacturing industries under heterogeneous environmental regulations · 2026 · DOI

  • The current magnitude of land-indicator incentives is insufficient to alter local governments' passive responses, while variations in supervision level and risk coefficients suggest that excessive centralization by the central government may be counterproductive.

    Evolutionary game analysis of central-local territorial spatial governance under China's dual carbon goals and its policy implications · 2026 · DOI

  • Future research should focus on regional market heterogeneity and interconnections, accounting for local, natural, socioeconomic contexts.

    China’s Carbon Emissions Trading Market: Current Situation, Impact Assessment, Challenges, and Suggestions · 2025 · DOI

  • Limited research to date explores the issue of climate apartheid and climate justice and its relationship with accountability.

    Climate apartheid: the failures of accountability and climate justice · 2024 · DOI

  • Even if it did, it remains unclear why Heath thinks economists have the relevant expertise.

    Philosophical Foundations of Climate Change Policy · 2024 · DOI

  • Limitations of this study This study is subject to three methodological limitations.

    Estimation of agricultural carbon abatement costs using a marginal-productivity-based production-input model: evidence from Fujian Province, China · 2026 · DOI

  • Third, the evaluation is limited to the daily closing price data and two parameter re-estimation frequencies (weekly and monthly), leaving open the question of whether higher-frequency data or alternative updating schemes would yield different results.

    Risk Measurement of Chinese Carbon Emissions Trading Market Based on DCS-Type Models · 2026 · DOI

  • The need for subnational governments to take a more significant role in climate action. The lack of a transparent approach for integrating subnational variation into decarbonization modeling.

    Modeling Heterogeneous Subnational Climate Action through a Sectoral Tiering Framework: Implications for U.S. Decarbonization Pathways · 2026 · DOI

  • The trade-off between environmental services and agricultural production is a major challenge. The design of PES programs is a complex task. The paper's findings highlight the need for policymakers to consider the potential contractionary effects of PES.

    The Economic Effects of Payments for Environmental Services: Ecology Versus Economics? · 2026 · DOI

  • The macroeconomic implications of PES remain insufficiently understood. Prior work has focused on local outcomes or relied on partial equilibrium frameworks. There is a need for a general equilibrium model that captures the interactions between sectors, prices, and income.

    The Economic Effects of Payments for Environmental Services: Ecology Versus Economics? · 2026 · DOI

  • The complexity of climate modeling and the need for a high-fidelity surrogate model. The need to enable regional agents to learn climate policies under multi-gas dynamics.

    Climate Surrogates for Scalable Multi-Agent Reinforcement Learning: A Case Study with CICERO-SCM · 2026 · DOI

  • Third, the food security measure does not account for substitution toward third-country imports.

    Carbon Border Adjustment, Market Responses, and Food-Security Trade-Offs in EU–Türkiye Processed Agri-Food Trade: A Calibrated Stackelberg Analysis · 2026 · DOI

  • Further research on air quality and health impacts of different 6 WHO declares novel coronavirus outbreak a pandemic.

    Estimation of Property Value Changes from Nearby Carbon Capture, Utilization, and Storage Projects in the United States · 2026 · DOI

Most-cited papers in Climate Change Policy and Economics

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Open questions raised by papers listed on this page include: (1) Future research could investigate whether right-wing populist parties have actively reinforced perceptions of unequal treatment and opposition to environmental policies in rural areas (“Unequal treatment perceptions and rural backlashes against carbon taxation”, 2026); (2) There is a need to construct a careful alignment between the border of the no-tax area and the level of taxation (“Dynamic analysis of degradation thresholds for sustainable environmental…”, 2026); (3) The gap is the lack of a methodological framework that can handle the complexity and uncertainty of climate finance allocation (“Advancing the NCQG: A Fuzzy Multi-Criteria Model for Evaluating National…”, 2026); (4) Future research could consider the impact of government policies on heterogeneous firms, such as those with differing levels of technological innovation capability (“Research on government carbon allowance allocation mechanism from the…”, 2026); (5) The applicability of the “one-category-one-strategy” approach to marginal industries remains to be verified (“Paths for low-carbon transformation in heavily polluting manufacturing…”, 2026). 324 gap statements have been mined from Climate Change Policy and Economics papers in our 7.9M-paper local library, which holds 4,290 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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