For this reason and others, such as the choice of social discount rate, the estimates of the SCC range from near zero to hundreds of dollars per ton of carbon. (issues.org)
Theoretically, it is defined as the potential for cost - effective heat - trapping gas (greenhouse gas) mitigation when non-market social costs and benefits are included with market costs and benefits in assessing the options for particular levels of carbon prices (as affected by mitigation policies) and when using social discount rates instead of private ones. (climatehotmap.org)
Assume greater climate damages or a lower social discount rate — meaning how much we discount the value of future social returns in relationship to present - day investments — and models will tell you that higher levels of current spending are justified. (scientificamerican.com)