HighResMIP protocol Sample Clauses

HighResMIP protocol. Summary tables for each of the different components is provided in the appendix and the table below summarizes the number of simulations which were produced in stream 2 (excluding spinup-1950). Control-1950 Number of ensemble members Number of simulated years Standard resolution 8 1750 Intermediate resolution 2 600 High resolution 6 630 Standard resolution 20 1300 Intermediate resolution 6 390 High resolution 13 845 Standard resolution 9 374 Intermediate resolution 2 72 High resolution 9 374 A few items to note: ● As can be seen from the tables, there is no agreement between models as to what constitute standard and high resolution. ● Most groups had only two resolutions (standard and high), but two models (HadGEM3, ECMWF-IFS) opted for intermediate resolutions. ● The additional control simulations ranged 100 years to 900 (standard resolution), to 500 (intermediate) and to 150 (high) years. ● For hist-1950, 1300 and 845 new simulated years were produced at standard and high resolution respectively. ● For highres-future, most ensemble members cover the period 2015-2050, except for one member of EC-Earth3P, which covers the period 2015-2100 at both standard and high resolutions. Beside the additional HighResMIP simulations, three additional sets of simulations were performed within stream 2: The first set, referred to as future-2050, is a continuation of the highres-future experiment, but with the forcing remaining constant at the 2050 level, starting in 2050. The goal of this experiment is to increase the event set, rather than the ensemble size and to look at changes in variability in the warmer climate. These simulations are also directly comparable to the control-1950 simulations. This experiment was performed with the HadGEM3 model. The second set, referred to as 4xCO2, quadruples the amount of CO2 in the atmosphere at the end of the spinup-1950 simulation and is then run for 100 years. With such a strong forcing, we expect a fast response and less years for the signal to emerge. This experiment was performed with the MPI-ESM model. Finally, the last set is a set of experiments at standard resolution following the hist-1950 protocol, but using stochastic physics. Comparison with the standard hist-1950 simulations will provide information on how sub-grid scale variability affects the resolved scale variability and the benefit of resolution with respect to stochastic physics in the representation of the climate. This experiment was performed with the EC-E...