Figure 6-5: b) Non-CO2 trace gas radiative
forcing components. "Cl/Br direct" is the direct radiative forcing resulting
from Cl- and Br-containing halocarbons; emissions are assumed to be controlled
under the Montreal Protocol and its Adjustments and Amendments. The indirect
forcing from these compounds (through stratospheric O3 depletion) is shown
separately (Strat. O3). All other emissions follow the IS92a scenario. The
tropospheric O3 forcing (Trop. O3) takes account of concentration changes
resulting only from the indirect effect from CH4 (IPCC, 1996, Figure 6b-c).
