Nascimento Leonardo, Höhne Niklas
Environmental System Analysis, Wageningen University and Research, Wageningen, The Netherlands.
NewClimate Institute, Cologne, Germany.
NPJ Clim Action. 2023;2(1):12. doi: 10.1038/s44168-023-00043-8. Epub 2023 Jun 9.
To identify means to improve mitigation efforts, we investigated whether the number of climate policies is associated with emission projections up to 2030 and compared policies' prevalence across country groups. We find that larger and more comprehensive policy portfolios are conducive to emission reductions, regardless of whether absolute emissions increase or already decline. However, country groups have distinct entry points to expand climate policy. Countries with fast-increasing emissions have significantly fewer policies overall but policies are especially missing in energy-demand sectors, such as buildings and transport. Countries with stalling emissions lack climate strategies and other cross-sectoral policies. This suggests the need for better coordination of mitigation efforts across sectors. In all country groups that fail to reduce emissions, policies to reduce energy and material demand are also substantially fewer. Despite the collective increase of policies in force, countries can still expand climate policy to use the full breadth of mitigation options available.
为了确定如何改进减排措施，我们研究了气候政策的数量与到2030年的排放预测之间是否存在关联，并比较了不同国家组中政策的普及程度。我们发现，规模更大、更全面的政策组合有利于减排，无论绝对排放量是增加还是已经下降。然而，不同国家组在扩大气候政策方面有不同的切入点。排放量快速增长的国家总体上政策显著较少，尤其是在建筑和交通等能源需求部门缺乏相关政策。排放量停滞不前的国家缺乏气候战略和其他跨部门政策。这表明需要更好地协调各部门的减排努力。在所有未能减排的国家组中，减少能源和材料需求的政策也大幅减少。尽管现行政策总体有所增加，但各国仍可扩大气候政策，以充分利用所有可用的减排选项。
