The seven leading industrial countries, called the G7, are becoming a pivotal group to fulfil their emissions-reduction commitments to manage the climate crisis. This paper investigates the relationships between R&D intensity, globalization, and carbon emissions in the context of the G7 countries for the period from 1970 to 2017. Our analysis, which examines these relationships, focuses on the wavelet coherence approach to conduct time-frequency domain analyses. The empirical results show that there is heterogeneity across different time scales and frequencies for R&D intensity, globalization, and carbon emissions within each country. Specifically, R&D intensity and globalization are negatively correlated with carbon emissions for the G7 countries, except Japan, for which they are positive. The long-term correlations between R&D intensity, globalization, and carbon emissions are higher than those in the short- and medium-term periods. In addition, the multiscale connectedness network results reveal that the strongest bidirectional correlations exist between energy consumption, economic growth, and carbon emissions. Our results provide a useful reference for policymakers in the G7 countries to effectively regulate carbon emissions.

被称为 G7 的七个主要工业国家正在成为履行其减排承诺以应对气候危机的关键集团。本文研究了 1970 年至 2017 年 G7 国家背景下研发强度、全球化和碳排放之间的关系。我们的分析重点研究了这些关系，重点是使用小波相干方法进行时频域分析. 实证结果表明，每个国家的研发强度、全球化和碳排放在不同时间尺度和频率上存在异质性。具体而言，除日本外，研发强度和全球化与 G7 国家的碳排放呈负相关。R& 之间的长期相关性 D 强度、全球化和碳排放量高​​于中短期。此外，多尺度连通性网络结果表明，能源消耗、经济增长和碳排放之间存在最强的双向相关性。我们的研究结果为 G7 国家的决策者有效调控碳排放提供了有益的参考。