Table 1

Summary of transient coupled atmosphere-ocean GCM experiments. The scenario gives the rate of increase of CO₂ used - most experiments use 1%/yr which gives a doubling of CO₂ after 70 years (IS92a gives a doubling of equivalent CO₂ after 95 years). The ratio of the transient response at the time of doubled CO₂ to the equilibrium (long-term) response to doubling CO₂ is given if known.

Centre Country Flux Adjusted? Scenario Warming at doubling Equilibrium warming Ratio(%)

BMRC Australia No 1%/yr 1.35 2.1 63

CCC Canada Yes 1%/yr - 3.5

COLA USA No 1%/yr 2.0 -

CSIRO Australia Yes 1%/yr 2.0 4.3 47

GFDL USA Yes 0.25%/yr 2.6 3.7

GFDL USA Yes 0.50%/yr 2.4 3.7

GFDL USA Yes 1%/yr 2.2 3.7 59

GFDL USA Yes 2%/yr 1.8 3.7

GFDL USA Yes 4%/yr 1.5 3.7

GFDL USA Yes 1%/yr - -

GISS USA No 1%/yr 1.4 -

IAP China Yes 1%/yr 2.5 -

MPI Germany Yes IPCC90A 1.3 2.6 50

MPI Germany Yes IPCC90D na 2.6

MPI Germany Yes IPCC90A 1.5 -

MPI Germany Yes IPCC90A na 2.6

MPI Germany Yes Aerosols na 2.6

MRI Japan Yes 1%/yr 1.6 -

UKMO UK Yes 1%/yr 1.7 2.7 64

UKMO UK Yes 1%/yr 1.7 2.5 68

UKMO UK Yes 1%/yr na 2.5

UKMO UK Yes Aerosols na 2.5

Centre	Country	Flux Adjusted?	Scenario	Warming at doubling	Equilibrium warming	Ratio(%)
BMRC	Australia	No	1%/yr	1.35	2.1	63
CCC	Canada	Yes	1%/yr	-	3.5
COLA	USA	No	1%/yr	2.0	-
CSIRO	Australia	Yes	1%/yr	2.0	4.3	47
GFDL	USA	Yes	0.25%/yr	2.6	3.7
GFDL	USA	Yes	0.50%/yr	2.4	3.7
GFDL	USA	Yes	1%/yr	2.2	3.7	59
GFDL	USA	Yes	2%/yr	1.8	3.7
GFDL	USA	Yes	4%/yr	1.5	3.7
GFDL	USA	Yes	1%/yr	-	-
GISS	USA	No	1%/yr	1.4	-
IAP	China	Yes	1%/yr	2.5	-
MPI	Germany	Yes	IPCC90A	1.3	2.6	50
MPI	Germany	Yes	IPCC90D	na	2.6
MPI	Germany	Yes	IPCC90A	1.5	-
MPI	Germany	Yes	IPCC90A	na	2.6
MPI	Germany	Yes	Aerosols	na	2.6
MRI	Japan	Yes	1%/yr	1.6	-
UKMO	UK	Yes	1%/yr	1.7	2.7	64
UKMO	UK	Yes	1%/yr	1.7	2.5	68
UKMO	UK	Yes	1%/yr	na	2.5
UKMO	UK	Yes	Aerosols	na	2.5

Adapted from Houghton, J.T., L.G. Meira Filho, B.A. Callender, N. Harris, A. Kattenberg, and K. Maskell, 1996: Climate Change 1995. The Science of Climate Change. Cambridge University Press. 572 pp.