have been no major volcanic eruptions since Mt Pinatubo in 1991, but
several smaller eruptions have caused a RF for the years 2008–2011 of
–0.11 (–0.15 to –0.08) W m
as compared to 1750 and –0.06 (–0.08
to –0.04) W m
–2
–2
as compared to 1999–2002. Emissions of CO
from
volcanic eruptions since 1750 have been at least 100 times smaller
than anthropogenic emissions. {8.4.2, 8.5.2, Figures 8.12, 8.13, 8.18}