Experiment Protocol
Coordinated model experiments in PAMIP are listed in the following tables:
- Atmosphere-only time slice experiments
- Coupled ocean-atmosphere time slice experiments
- Atmosphere-only time slice experiments to investigate regional forcing
- Atmosphere-only time slice experiments to investigate the role of the background state
- Atmosphere-only transient experiments
- Coupled ocean-atmosphere transient experiments
More information regarding experiment protocol including initial condition and ice-constraining approaches in the coupled ocean-atmosphere models can be found at the link below:
https://www.geosci-model-dev.net/12/1139/2019/
The SST and sea ice forcing files can be downloaded from input4MIPs
https://esgf-node.llnl.gov/projects/input4mips/
1. Atmosphere-only time slice experiments
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 1.1 | pdSST-pdSIC | Time slice forced by climatological monthly mean SST and SIC for the present day (pd) | Present day SST and SIC | 1 | 2000 | 1 | 100 |
| 1.2 | piSST-piSIC | Time slice forced by climatological monthly mean SST and SIC for preindustrial (pi) conditions | Preindustrial SST and SIC | 2 | 2000 | 1 | 100 |
| 1.3 | pdSST-pdSIC | Time slice forced by pi SST and pd SIC | Different SST relative to 1.1 to investigate the role of SSTs in polar amplfication | 1 | 2000 | 1 | 100 |
| 1.4 | futSST-pdSIC | Time slice forced by pd SIC and future SST representing 2 degree global warming (fut) | 2 | 2000 | 1 | 100 | |
| 1.5 | pdSST-piArcSIC | Time slice forced by pd SST and pi Arctic SIC | Different Arctic SIC relative to 1.1 to investigate the impact of present day and future Arctic sea ice , and the role of Arctic SIC in polar amplification | 1 | 2000 | 1 | 100 |
| 1.6 | pdSST-futArcSIC | Time slice forced by pd SST and fut Arctic SIC | 1 | 2000 | 1 | 100 | |
| 1.7 | pdSST-piAntSIC | Time slice forced by pd SST and pi Antarctic SIC | Different Antarctic SIC relative to 1.1 to investigate the impact of present day and future Arctic sea ice , and the role of Arctic SIC in polar amplification | 1 | 2000 | 1 | 100 |
| 1.8 | pdSST-futAntSIC | Time slice forced by pd SST and fut Antarctic SIC | 1 | 2000 | 1 | 100 | |
| 1.9 | pdSST-pdSICSIT | Time slice forced by pd sea ice thickness (SIT) in addition to SIC and SST | investigate the impacts of sea ice thickness changes | 3 | 2000 | 1 | 100 |
| 1.10 | pdSST-futArcSICSIT | Time slice forced by pd SST and fut Arctic SIC and SIT | Investigate the impacts of sea ice thickness changes | 3 | 2000 | 1 | 100 |
2. Coupled ocean-atmosphere time slice experiments
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 2.1 | pa-pdSIC | Coupled time slice constrained by pdSIC | 2 | 2000 | 1 | 100 | |
| 2.2 | pa-piArcSIC | Coupled time slice with pi Arctic SIC | As 1.5 and 1.6 but with coupled model | 2 | 2000 | 1 | 100 |
| 2.3 | pa-futArcSIC | Coupled time slice with fut Arctic SIC | 2 | 2000 | 1 | 100 | |
| 2.4 | pa-piAntSIC | Coupled time slice with pi Antarctic SIC | As 1.7 and 1.8 but with coupled model | 2 | 2000 | 1 | 100 |
| 2.5 | pa-futAntSIC | Coupled time slice with fut Antarctic SIC | 2 | 2000 | 1 | 100 |
3. Atmosphere-only time slice experiments to investigate regional forcing
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 3.1 | pdSST-futOkhotskSIC | Time slice forced by pd SST and fut Arctic SIC only in the Sea of Okhotsk | Investigate how the atmospheric response depends on the geogrpahic pattern of Arctic sea ice forcing | 3 | 2000 | 1 | 100 |
| 3.2 | pdSST-futBKSeasSIC | Time slice forced by pd SST and fut Arctic SIC only in the Barents/Kara Seas | 3 | 2000 | 1 | 100 |
4. Atmosphere-only time slice experiments to investigate the role of the background state
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 4.1 | modelSST-pdSIC | Time slice forced by pd SIC and pd SST from coupled model (2.1) rather than observations | In conjunction with experiment 1 and 2, isolate the effect of the background state from the effect of coupling | 3 | 2000 | 1 | 100 |
| 4.2 | modelSST-futArcSIC | Time slice forced by fut Arctic SIC and pd SST from coupled model (2.1) rather than observations | 3 | 2000 | 1 | 100 |
5. Atmosphere-only transient experiments
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 5.1 | amip-climSST | Repeat CMIP6 AMIP (1979-2014) but with climatological monthly mean SST | Use CMIP6 AMIP as the control, investigate transient response, individual years, and the contributions of SST and SIC to recent climate change | 3 | 1979 | 36 | 3 |
| 5.2 | amip-climSIC | Repeat CMIP6 AMIP (1979-2014) but with climatological monthly mean SIC | 3 | 1979 | 36 | 3 |
6. Coupled ocean-atmosphere transient experiments
| No. | Experiment Name | Description | Note | Tier | Start year | Years | Min. ensemble |
|---|---|---|---|---|---|---|---|
| 6.1 | pa-pdSIC-ext | Coupled model extended simulation constrained with pd sea ice | Experiments to investigate the decadal and longer impacts of Arctic and Antarctic sea ice | 3 | 2000 | 100 | 1 |
| 6.2 | pa-futArcSIC-ext | Coupled model extended simulation constrained with fut Arctic sea ice | 3 | 2000 | 100 | 1 | |
| 6.3 | pa-futAntSIC-ext | Coupled model extended simulation constrained with fut Antarctic sea ice | 3 | 2000 | 100 | 1 |