na = not available
Numbers in italics indicate simulations with other than a 1%/yr increase
* 1%/yr of current CO2
Polar deep ocean quantities constrained.
Three additional 50-year runs, each from different initial conditions.
from IPCC scenario 90A after greenhouse gas forcing from 1880 to
As (1) with a representation of aerosol forcing, with increases after
1990 based on IS92a.
Equilibrium model excluded sea ice dynamics. Coupled model has warmer
than observed tropical sea surface temperatures and a vigorous ice albedo
feedback (Washington and Meehl, 1996) contributing to the high sensitivity.
Average of three experiments from different initial conditions.
increased by 1%/yr from 1990. Observed greenhouse gas forcing used
from 1860 to 1990.
As (7) with a representation of aerosol forcing, with increases of aerosol
and greenhouse gases after 1990 based on IS92a.