One of the biggest obstacles in cross-country empirical research in the area of environmental economics is the absence of a sound indicator quantifying environmental policy stringency. A variety of indicators have been proposed and are currently used. Almost none of them rely on an explicitly...

This is the online appendix to the paper "How should we measure environmental policy stringency? A new approach" (Sauter, 2014). The main paper outlines the general methodology proposed to construct environmental policy indexes and proposes a first implementation of a CO2 input index and a CO2...