Hansen 2017… shows that reducing atmospheric burden, has a feedback effect where natural systems feedback emissions are also reduced by up to several hundred Gt C.
Selected quote, “Studies suggesting multi-meter sea level rise in a century assume continued high fossil fuel emissions this century (Hansen et al., 2016) or at least a 2 C SST increase (DeConto and Pollard, 2016). Ice sheet response time decreases
rapidly in models as the forcing increases, because processes such as hydrofracturing and collapse of marine terminating ice cliffs spur ice sheet disintegration (Pollard et al., 2015). All amplifying feedbacks, including atmospheric water vapor, sea ice cover, soil carbon release and ice sheet melt could be reduced by rapid emissions phasedown.”
Hansen et al., Young people’s burden: requirement of negative CO2 emissions, Earth Systems Dynamics, July 18, 2017. Figure 10 interpretation and in the body defined as reduced natural systems emissions.
https://www.earth-syst-dynam.net/8/577/2017/esd-8-577-2017.pdf
