Synthesis report on challenges, systems, and data

This report synthesizes the findings of WP2, which aims to identify and assess barriers for the implementation of global material flow analyses in the 4 dimensions in order to address various issues for selected raw materials. Explicit system definitions will be used to structure the information and facilitate the identification of harmonisation needs. The findings of this WP will feed into WP5 and be included in the web portal (T6.3), which will allow user to locate and access data sources, data gaps and inconsistencies, including references to on-going projects to address them.