Lifestyle carbon footprints and changes in lifestyles to limit global warming to 1.5 °C, and ways forward for related research

Funding Information: This research was partially supported by the Finnish Innovation Fund Sitra, the KR Foundation, the United Nations’10-Year Framework of Programmes on Sustainable Consumption and Production (10YFP), and the Environment Research and Technology Development Fund (JPMEERF16S11600) of the Environmental Restoration and Conservation Agency, Japan. The details of the quantitative methodologies and results are available as a technical report (IGES et al. ). The authors are grateful to all the partners and reviewers that have contributed to the 1.5-Degree Lifestyles project. The authors declare no conflicts of interest associated with this manuscript. Publisher Copyright: © 2021, The Author(s).This paper presents an approach for assessing lifestyle carbon footprints and lifestyle change options aimed at achieving the 1.5 °C climate goal and facilitating the transition to decarbonized lifestyles through stakeholder participatory research. Using data on Finland and Japan it shows potential impacts of reducing carbon footprints through changes in lifestyles for around 30 options covering food, housing, and mobility domains, in comparison with the 2030 and 2050 per-capita targets (2.5–3.2 tCO2e by 2030; 0.7–1.4 tCO2e by 2050). It discusses research opportunities for expanding the footprint-based quantitative analysis to incorporate subnational analysis, living lab, and scenario development aiming at advancing sustainability science on the transition to decarbonized lifestyles.Peer reviewe