Figure caption

Figure 6.15 | Global mean surface air temperature (GSAT) response to an abrupt reduction in emissions (at time t=0) of idealized climate forcing agents with different lifetimes. All emissions are cut to give a radiative forcing of –1 W m–2 at a steady state (except for CO2). In other words, if the yearly emissions are E0 before the reduction, they will have a fixed lower value Eyear>0= (E0 δE) for all succeeding years. For comparison, the GSAT response to a sustained reduction in CO2 emissions resulting in an RF of –1 W m–2 in year 100 is included (dashed line). The temperature response is calculated using an impulse response function (Cross-Chapter Box 7.1) with a climate feedback parameter of –1.31 W m–2°C–1. Further details on data sources and processing are available in the chapter data table (Table 6.SM.3).