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Due to time constraints, piControl year 1 (0001-01-01) initial conditions are taken from a pre-existing simulation rather than starting a new spin-up from scratch. The initial conditions are 0331-01-01 of 20171228.beta3rc13_1850.ne30_oECv3_ICG.edison.
Provenance of initial conditions:
- MPAS-O stand-alone initialization
- 10 years of G-case (/wiki/spaces/OCNICE/pages/130353452)
- Ocean and sea-ice restart as initial conditions for
- 50 years coupled FCT2 (0001-0051; /wiki/spaces/OCNICE/pages/161349662)
- Year 51 ocean and sea-ice restart as initial conditions for
- 250 years of coupled beta3rc10 (0001-0251; 20171122.beta3rc10_1850.ne30_oECv3_ICG.edison)
- Year 251 atmosphere, land, river, ocean and sea-ice restart as initial conditions for
- 80 years of coupled beta3rc13 (0251-0331; 20171228.beta3rc13_1850.ne30_oECv3_ICG.edison)
- Year 331 atmosphere, land, river, ocean and sea-ice restart as initial conditions for
- DECK v1 piControl
Final tuning
At the time piControl needed to start, we were still in the process of fine tuning the control simulation to reduce its long term drift in surface air temperature as much as possible. 20171228.beta3rc13_1850.ne30_oECv3_ICG.edison was the configuration with the smallest drift at the time. However, due to its limited duration (80 years), we couldn't conclusively determine whether the drift was as small as it could be. As a result, we decided to start two piControl simulations with the goal of running both of them for 50-100 years and then selecting one:
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