S - 3 Low - Carbon Society Scenario toward 2050 : Scenario Development and its Implication for Policy Measures 4 . Integrated Measures of Technologies and Lifestyles against Global Warming

We have been studying the influence of ICT diffusion on environmental problems. From previous study " s results, we selected three important ICT applications. These are an " SCM (Supply Chain Management) system " , which reduces resources used in the industry sector, an " advanced traffic utilization system & teleworking " , which increases energy use efficiency and decreases the frequency of traffic use, and an " Eco-life navigation system " , which changes people " s actions to a more environmentally conscious one. We investigated these effects on environmental loads in more detail. We estimated ICT impact on CO 2 reduction in 2020 and 2050 based on previous results. These values were estimated according to uniform social change. However, pattern of changes will not be uniform, due to the radical nature of ICT revolution. We therefore investigated how to depict future ICT society post ICT revolution, and after that we made the second estimation in 2050. Figure 1 shows the flow of our creation method of a 2050 sustainable low carbon society. As shown, 1000 citizens were surveyed on 11 categories: ex. eating-style, working-style, living-style in 2050. Information on future life style was gathered by examining SF-films and animation, and consulting over ten knowledgeable people and two research groups. These ideas were then brainstormed in order to construct a vision of a future-desired ICT society based on a new " social model " which represents the relationship between human society and technology. A presentation of the future-desired ICT society was created using text and illustration focusing on lifestyle in 2050. We also studied ICT impact on industrial structure in 2050, using a macroscopic S-3-4-E-2 long-term simulation model and microscopic LCA based model.