Changes between Version 48 and Version 49 of Documentation/UserGuide/Config
- Timestamp:
- 2020-04-01T18:59:27+02:00 (4 years ago)
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Documentation/UserGuide/Config
v48 v49 39 39 === Specific offline experiments === 40 40 ==== [wiki:Scripts/SpinUpJobs SPINUP and SPINUP_ANALYTIC_FG1] ==== 41 Last revision: 2020/02/28, F. Maignan[[BR]]42 41 43 Spinup of the model is needed to find a stable initial state for historical simulations. Read more about [wiki:Documentation/UserGuide/SpinUpCarbon Spinup of the Carbon-related variables: purpose and usages].42 Spinup of the model is needed to find a stable initial state for historical simulations. 44 43 44 Two particular experiments were defined for the spinup of carbon related variables (SPINUP_ANALYTIC_FG1 and SPINUP, which is not maintained) and SPINUP_ANALYTIC_FG1 can be adapted for the spinup of "faster" variables (water, heat, LAI). 45 45 46 The equilibrium of the physics of the land surface (SECHIBA part of ORCHIDEE) should be reached in less 47 than 10 years with a constant climatology and a prescribed LAI. You may take care of the 48 years of the forcing files because El Niño or La Niña specific years may give bad results for a 49 global spinup. 50 51 The equilibrium of the LAI (seasonal variation of the vegetation) takes less than two 52 decades to converge. There is a big feedback between the LAI and the hydrology and 53 energy budgets. 54 55 The soil passive carbon pool takes thousands of years to converge, but there is no 56 feedback between the soil carbon pools and the LAI and the hydrology yet. 57 58 * '''Recommended method using SPINUP_ANALYTIC_FG1:''' An iterative pseudo-analytical method has been implemented in ORCHIDEE to find the equilibrium for the carbon pools more quickly. The experiment directory SPINUP_ANALYTIC_FG1 makes use of this method. Using this method, still the living biomass and the hydrology need time to spin up. 59 * '''The previous method using SPINUP folder:''' to accelerate the spinup used the programs forcesoil and orchidee_ol. forcesoil was used to accelerate the convergence of the soil carbon pools only. The directory SPINUP is used to spinup with this method. IMPORTANT: SPINUP directory is not maintained. Read more about the method in directory [wiki:Scripts/SpinUpJobs SPINUP]. 46 Read more about [wiki:Documentation/UserGuide/SpinUpCarbon Spinup : why, how and how long? The answer depends on the ORCHIDEE component]. 60 47 61 48 ==== [wiki:Scripts/Ensemble ENSEMBLE] ==== … … 64 51 model. 65 52 66 For each experiment, this configuration will use the SPINUP configuration as a skeleton to launch a set of53 For each experiment, this configuration will use the above SPINUP configuration as a skeleton to launch a set of 67 54 jobs. 68 55 … … 71 58 simulation on a various set of vegetation and climate distributions. 72 59 73 See page [wiki:Scripts/FluxnetValidation FluxnetValidation] for a complete documentation on FLUXNET sites validations.60 See page [wiki:Scripts/FluxnetValidation Configuration ENSEMBLE to run ORCHIDEE at Fluxnet sites] for a complete documentation on FLUXNET sites simulations.
