Sho Hata

National Institute for Environmental Studies · Sosial System Division

Improvements in four material flow indicators (MFIs) have helped facilitate Japan's transition to a sound material-cycle society. However, the economic and technological factors that have affected these MFIs have not been identified previously. Moreover, it is unclear whether the improvements in the MFIs have contributed to Japan's progress toward...

Achieving a zero-emission future depends greatly on how steel production is decarbonized within a limited time frame. Here we show that the production of zero-emission steel is possible but that the quantity and quality of steel may be limited by scrap downcycling. Using Japan as a case study, our analysis shows that most steel scrap is currently d...

Decarbonization strategies for the cement and concrete sector have relied heavily on supply-side technologies, including carbon capture and storage (CCS), masking opportunities for demand-side intervention. Here we show that cross-cutting strategies involving both the supply and demand sides can achieve net-zero emissions by 2050 across the entire...

Production and services are supported by fixed-capital which require large amounts of material investments. Given that material use triggers substantial carbon emissions, management of the material use and carbon emissions via fixed-capital formation is vital for climate targets. Here, we calculate capital-embodied material footprints (MFs) and the...

Moving towards a 1.5 °C world could fundamentally alter the future copper cycle through two key drivers: the implementation of decarbonization technologies and the imposition of an emissions budget on production activities. This study explores the impact of these drivers on the global copper cycle using a dynamic material flow analysis, coupled wit...

The increasing frequency of large-scale natural disasters generates massive energy and resource demand for recovery. We developed an inoperability multiregional input–output model as a quadratic programming model with production and greenhouse gas (GHG) restrictions to develop a low-carbon recovery plan for natural disasters. In a case study of a h...