Levity-complementing climate policy strategies

摘要: When the likelihood of future damages is very small or highly uncertain, decisions are best based on avoidability. Here we present the intuitive and practical measure, levity, to account for avoidability in policy strategies-closing the gap between risk assessment and cost-efficiency analysis. Levity is applicable to mitigation as well as to adaptation options. It is scale independent and thereby allows to compare global strategies with daily personal decisions. We propose its application to complement climate protection strategies in specific cases that can not be assessed properly by other means.