Risk assessment for adaptation to climate change in the international supply chain

Climate change affects people's daily lives and industrial activities by increasing the frequency of extreme weather events, such as typhoons and heatwaves, raising the sea-level, and changing rainfall patterns. These effects expand across countries and industries through disruptions in supply chains. In this study, a method of identifying high-risk processes in the supply chain due to climate-related disasters is developed, along with climate-related disaster risk factors (CDRF) for each country and each type of climate-related disaster. As a case study, the automotive supply chains of the USA, China, Japan, and Germany were assessed using a multi-regional input-output table. The results show that, in the USA, Japanese, and German automotive industries, the climaterelated disaster risk to workers outside the country is higher than that to workers within the country. However, the economic climate-related disaster risk is higher in the home country. In China's automotive industry, the risks to both workers and the economy were higher for the home country because the high level of involvement within the country. High-income countries should support climate change adaptation in low- and lower-middle income countries. These policies are also important for improving the stability of their own industrial base.