Short Description of CMIP5 Experiments

Table 3 : Baseline simulations for model evaluation and for understanding historical and paleoclimates.

Exp 3.1

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
pre-industrial control (1800-)	piControl	3.1	core	> 500	Coupled atmosphere/ocean pre-industrial control run. Prescribed atmospheric concentrations of (i) all well-mixed gases (including CO2) (ii) some short-lived (reactive) species. Prescribed non-evolving emissions or concentrations of (i) natural aerosols or their precursors (ii) some short-lived (reactive) species. Unperturbed land use.

Exp 3.2

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
historical (1850-2005)	historical	3.2	core	156	simulation of recent past (1850-2005) Impose changing conditions (consistent with observations), which may include: (i) atmospheric composition (including CO2), due to both anthropogenic and volcanic influences (ii) solar forcing (iii) emissions or concentrations of short-lived species and natural and anthropogenic aerosols or their precursors (iv) land use

Exp 3.3

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
AMIP (1979-2009)	amip	3.3	core	> 30	AMIP (1979- at least 2008) Impose SSTs & sea ice (from observations), but with other conditions (including CO2 concentrations and aerosols) as in expt. 3.2. See expt. 6.5 for further recommendations from CFMIP.

Exp 3.4

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
mid-Holocene	midHolocene	3.4	tier 1	> 100	impose Mid-Holocene conditions, consistent with PMIP

Exp 3.5

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
last glacial minimum	lgm	3.5	tier 1	> 100	impose last glacial maximum conditions, consistent with PMIP

Exp 3.6

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
last millenium	past1000	3.6	tier 2	1000	impose forcing for 850-1850, consistent with PMIP

Table 4 : Future climate projections with models forced by RCP concentrations.

Exp 4.1

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
RCP 4.5 (2006-2100)	rcp45	4.1	core	95	RCP4.5 (2006-2100)

Exp 4.2

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
RCP 8.5 (2006-2100)	rcp85	4.2	core	95	RCP8.5 (2006-2100)

Exp 4.3

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
RCP 2.6 (2006-2100)	rcp26	4.3	tier 1	95	RCP2.6 (2006-2100)

Exp 4.4

Experiment	Short Name	Exp Nb	Tier	Nb of year	Short description
RCP 6.0 (2006-2100)	rcp69	4.4	tier 1	95	RCP6.0 (2006-2100)

Table 5 : Additional simulations with fully coupled carbon/climate models only

Exp 5.1

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.1	esmControl	ESM pre-industrial control	as in experiment 3.1, but emissions-forced (with atmospheric CO2 determined by model)	250	core

Exp 5.2

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.2	esmHistorical	ESM historical	as in experiment 3.2, but emissions-forced (with atmospheric CO2 determined by model)	156	core

Exp 5.3

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.3	esmrcp85	ESM RCP8.5	as in experiment 4.2, but emissions-forced (with atmospheric CO2 determined by model)	95	core

Exp 5.4-1

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.4-1	esmFixClim1	ESM fixed climate 1	radiation code "sees" control CO2, but carbon cycle sees 1%/yr rise	140	1

Exp 5.4-2

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.4-2	esmFixClim2	ESM fixed climate 2	radiation code "sees" control CO2, but carbon cycle sees historical followed by RCP4.5 rise in CO2	251	1

Exp 5.5-1

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.5-1	esmFdbk1	ESM feedback 1 carbon	cycle "sees" control CO2, but radiation sees 1%/yr rise	140	2

Exp 5.5-2

Exp Nb	Short Name	Experiment	Short description	Nb of year	Tier
5.5-2	esmFdbk2	ESM feedback 2 carbon	cycle "sees" control CO2, but radiation sees historical followed by RCP4.5 rise in CO2	251	2