| Experiment | Description | Experiment number | CMIP5 designated tier | Years requested per run | Ensemble size requested | Liklihood that you will perform experiment (enter 1-5; see key at top of page) | Planned ensemble size (i.e., number of runs) | Liklihood that you will perform experiment (enter 1-5; see key at top of page) | Planned ensemble size (i.e., number of runs) | Official Short Name of Experiment | Official Experiment Name | years per realization | Liklihood that you will perform experiment (enter 1-5; see key at top of page) | Planned ensemble size (i.e., number of runs) | ATLAS | MONITORING |
| pre-industrial control | coupled atmosphere/ocean control run | 3,1 | core | >500 | 1 | 1 | 1 | 1 | 1 | piControl | pre-industrial control | 500 | 1 | 1 | q | q |
| historical | simulation of recent past (1850-2005) | 3,2 | core | 156 | 1 | 1 | 1 | 1 | 1 | historical | historical | 156 | 1 | 1 | q | q |
| AMIP | AMIP (1979-2008) | 3,3 | core | >30 | 1 | 1 | 1 | 1 | 1 | amip | AMIP | 30 | 1 | 1 | q | q |
| historical | increase ensemble size of expt. 3.2 | 3.2-E | tier 1 | 156 | >2 | 2 | 2 | 2 | 2 | historical | historical | 156 | 2 | 2 | q | q |
| AMIP | increase ensemble size of expt. 3.3 | 3.3-E | tier 1 | >30 | >2 | 2 | 2 | 2 | 2 | amip | AMIP | 30 | 2 | 2 | q | q |
| mid-Holocene | consistent with PMIP, impose Mid-Holocene conditions | 3,4 | tier1 | >100 | 1 | 1 | 1 | 1 | 1 | midHolocene | mid-Holocene | 100 | 1 | 1 | q | q |
| last glacial maximum | consistent with PMIP, impose last glacial maximum conditions | 3,5 | tier 1 | >100 | 1 | 1 | 1 | 1 | 1 | lgm | last glacial maximum | 100 | 1 | 1 | q | q |
| last millennium | consistent with PMIP, impose forcing for 850-1850 | 3,6 | tier 2 | 1000 | 1 | 2 | 1 | 2 | 1 | past1000 | last millennium | 1000 | 2 | 1 | q | q |
| RCP4.5 | future projection (2006-2100) forced by RCP4.5 | 4,1 | core | 95 | 1 | 1 | 1 | 1 | 1 | rcp45 | RCP4.5 | 95 | 1 | 1 | q | q |
| RCP8.5 | future projection (2006-2100) forced by RCP8.5 | 4,2 | core | 95 | 1 | 1 | 1 | 1 | 1 | rcp85 | RCP8.5 | 95 | 1 | 1 | q | q |
| RCP2.6 | future projection (2006-2100) forced by RCP2.6 | 4,3 | tier 1 | 95 | 1 | 1 | 1 | 1 | 1 | rcp26 | RCP2.6 | 95 | 1 | 1 | q | q |
| RCP6 | future projection (2006-2100) forced by RCP6 | 4, | tier 1 | 95 | 1 | 2 | 1 | 2 | 1 | rcp60 | RCP6 | 95 | 2 | 1 | q | q |
| RCP4.5 | extension of expt. 4.1 through 2300 | 4.1-L | tier 1 | 200 | 1 | 1 | 1 | 1 | 1 | rcp45 | RCP4.5 | 200 | 1 | 1 | q | q |
| RCP8.5 | extension of expt. 4.2 through 2300 | 4.3-L | tier 2 | 200 | 1 | 2 | 1 | 2 | 1 | rcp85 | RCP8.5 | 200 | 2 | 1 | q | q |
| RCP2.6 | extension of expt. 4.3 through 2300 | 4.l-L | tier 3 | 200 | 1 | 2 | 1 | 2 | 1 | rcp26 | RCP2.6 | 200 | 2 | 1 | q | q |
| ESM pre-industrial control | as in expt. 3.1, but atmospheric CO2 determined by model | 5,1 | core | >251 | 1 | 1 | 1 | 1 | 1 | esmControl | ESM pre-industrial control | 251 | 1 | 1 | q | q |
| Emission-driven historical | as in expt. 3.2, but with atmospheric CO2 determined by model | 5,2 | core | 156 | 1 | 1 | 1 | 1 | 1 | esmHistorical | ESM historical | 156 | 1 | 1 | q | q |
| emission-driven RCP8.5 | as in expt. 4.2, but with atmospheric CO2 determined by model | 5,3 | core | 95 | 1 | 1 | 1 | 1 | 1 | esmRcp85 | ESM RCP85 | 95 | 1 | 1 | q | q |
| ESM fixed climate 1 | radiation code "sees" control CO2, but carbon cycle sees 1%/yr rise | 5.4-1 | tier 1 | 140 | 1 | 1 | 1 | 1 | 1 | esmFixClim1 | ESM fixed climate 1 | 140 | 1 | 1 | q | q |
| ESM fixed climate 2 | radiation code "sees" control CO2, but carbon cycle sees historical followed by RCP4.5 rise in CO2 | 5.4-2 | tier 1 | 251 | 1 | 1 | 1 | 1 | 1 | esmFixClim2 | ESM fixed Climate 2 | 251 | 1 | 1 | q | q |
| ESM feedback 1 | carbon cycle "sees" control CO2, but radiatation sees 1%/yr rise | 5.5-1 | tier 2 | 140 | 1 | 1 | 1 | 1 | 1 | esmFdbk1 | ESM feedback 1 | 140 | 1 | 1 | q | q |
| ESM feedback 2 | carbon cycle "sees" control CO2, but radiatation sees historical followed by RCP4.5 rise in CO2 | 5.5-2 | tier 2 | 251 | 1 | 1 | 1 | 1 | 1 | esm-Fdbk2 | ESM feedback 2 | 251 | 1 | 1 | q | q |
| 1 percent per year CO2 | imposed 1%/yr increase in CO2 to quadrupling | 6,1 | core | 140 | 1 | 1 | 1 | 1 | 1 | 1ptCo2 | 1 percent per year CO2 | 140 | 1 | 1 | q | q |
| control SST climatology | An atmosphere-only run driven by prescribed climatological SST and sea ice. | 6.2a | core | >30 | 1 | 1 | 1 | 1 | 1 | sstClim | control SST climatology | 30 | 1 | 1 | q | q |
| CO2 forcing | as in expt. 6.2a, but with 4XCO2 imposed | 6.2b | core | >30 | 1 | 1 | 1 | 1 | 1 | sstClim4xco2 | CO2 forcing | 30 | 1 | 1 | q | q |
| abrupt 4XCO2 | impose an instantaneous quadrupling of CO2, then hold fixed | 6,3 | core | 150 | 1 | 1 | 1 | 1 | 1 | abrupt4xco2 | abrupt4XCO2 | 150 | 1 | 1 | q | q |
| abrupt 4XCO2 | generate an ensemble of runs like expt. 6.3, initialized in different months, and terminated after 5 years | 6.3-E | tier 1 | 5 | 11 | 2 | 11 | 2 | 11 | abrupt4xco2 | abrupt 4XCO | 5 | 2 | 11 | q | q |
| anthropogenic aerosol forcing | as in expt. 6.2a, but with anthropogenic aerosols from year 2000 of expt. 3.2 | 6.4a | tier 1 | >30 | 1 | 1 | 1 | 1 | 1 | sstClimAerosol | all aerosol forcing | 30 | 1 | 1 | q | q |
| sulfate aerosol forcing | as in expt. 6.2a, but with sulfate aerosols from year 2000 of expt. 3.2 | 6.4b | tier 1 | >30 | 1 | | | | | sstClimSulfate | sulfate aerosol forcing | 30 | 10 | 0 | q | q |
| Cloud response to imposed 4xCO2 | consistent with CFMIP, impose AMIP (1979-2008) conditions (expt. 3.3) but with 4xCO2 | 6,5 | tier 1 | 30 | 1 | 1 | 1 | 1 | 1 | amip4xco2 | 4xCO2 AMIP | 30 | 1 | 1 | q | q |
| Cloud response to an imposed change in SST pattern | consistent with CFMIP, add a patterned SST perturbation to AMIP SSTs of expt. 3.3. | 6,6 | tier 1 | 30 | 1 | 1 | 1 | 1 | 1 | amip Future | AMIP plus atterned anomaly | 30 | 1 | 1 | q | q |
| aqua planet: control run | consistent with CFMIP, impose zonally uniform SSTs on a planet without continents | 6.7a | tier 1 | 5 | 1 | 1 | 1 | 1 | 1 | auquaControl | aqua planet control | 5 | 1 | 1 | q | q |
| aqua planet: cloud response to imposed 4xCO2 | Consistent with CFMIP requirements, impose 4xCO2 on the zonally uniform SSTs of expt. 6.7a | 6.7b | tier 1 | 5 | 1 | 1 | 1 | 1 | 1 | aqua4xco2 | 4xCO2 aqua planet | 5 | 1 | 1 | q | q |
| Aqua-planet: cloud response to an imposed uniform change in SST. | Consistent with CFMIP requirements, add a uniform +4K to the zonally uniform SSTs of expt. 6.7a (which is the control for this run). | 6.7c | tier 1 | 5 | 1 | 1 | 1 | 1 | 1 | aqua4K | aqua planet plus 4K anomaly | 5 | 1 | 1 | q | q |
| Cloud response to an imposed uniform change in SST | Consistent with CFMIP requirements, add a uniform +4 K SST to the AMIP SSTs of expt. 3.3 (which is the "control" for this run). | 6,8 | tier 2 | 30 | 1 | 1 | 1 | 1 | 1 | amip4K | AMIP plus 4K anomaly | 30 | 1 | 1 | q | q |
| natural-only | historical simulation but with natural forcing only | 7,1 | tier 1 | 156 | 1 | 2 | 1 | 2 | 1 | historicalNat | natural-only | 156 | 2 | 1 | q | q |
| GHG-only | historical simulation but with greenhouse gas forcing only | 7,2 | tier 1 | 156 | 1 | 2 | 1 | 2 | 1 | historicalGhg | GHG-only | 156 | 2 | 1 | q | q |
| other-only | historical simulation but with other individual forcing agents | 7,3 | tier 2 | 156 | >1 | 3 | 1 | 3 | 1 | historical??? | other-only | 156 | 3 | 1 | q | q |
| natural-only | increase ensemble size of expt. 7.1 | 7.1-E | tier 2 | 156 | >2 | 3 | 2 | 3 | 2 | historicalNat | natural-only | 156 | 3 | 2 | q | q |
| GHG-only | increase ensemble size of expt. 7.2 | 7.2-E | tier 2 | 156 | >2 | 3 | 2 | 3 | 2 | historicalGhg | GHG-only | 156 | 3 | 2 | q | q |
| onther-only | increase ensemble size of expt. 7.3 | 7.3-E | tier 2 | 156 | >2 | 4 | 2 | 4 | 2 | historical??? | other-only | 156 | 4 | 2 | q | q |
