pmip3:cmip6:design:6k:index
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pmip3:cmip6:design:6k:index [2015/03/24 21:24] masa |
pmip3:cmip6:design:6k:index [2015/03/27 10:52] jypeter Added the date of vernal equinox |
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| The reference experiment to which the mid-Holocene is compared to is the pre-industrial control, which is part of the DECK. | The reference experiment to which the mid-Holocene is compared to is the pre-industrial control, which is part of the DECK. | ||
| - | For the mid-Holocene, our proposed experimental set-up for PMIP-CMIP6 is unchanged compared to the PMIP3-CMIP5 set-up: | + | For the **mid-Holocene**, our proposed experimental set-up for PMIP-CMIP6 is unchanged compared to the [[pmip3:design:6k:final|PMIP3-CMIP5 set-up]]: |
| - | The main forcing is the insolation, and the astronomical parameters must be set to: | + | ===== Orbital parameters ===== |
| + | |||
| + | The main forcing is the ** insolation **, and the astronomical parameters must be set to: | ||
| **eccentricity** = 0.018682 | **eccentricity** = 0.018682 | ||
| Line 19: | Line 21: | ||
| **perihelion-180°** = 0.87° | **perihelion-180°** = 0.87° | ||
| - | **Concentration of atmospheric trace gases:** | + | **Date of vernal equinox** = March 21 at noon |
| - | CO2 = 280 ppm | + | **solar constant** = same as in pre-industrial |
| - | CH4 = 650 ppb | + | ===== Concentration of atmospheric trace gases ===== |
| - | N2O = 270 ppb | + | **CO<sub>2</sub>** = 280 ppm |
| - | CFC = 0 | + | **CH<sub>4</sub>** = 650 ppb |
| - | O3 = same as in CMIP5 PI | + | **N<sub>2</sub>O** = 270 ppb |
| + | **CFC** = 0 | ||
| - | ** Topography/bathymetry/coastlines **: unchanged compared to pre-industrial | + | **O<sub>3</sub>** = same as in CMIP5 PI |
| - | ** Vegetation and land surface:** | ||
| - | Computed using a dynamical vegetation module, | + | ===== Topography/bathymetry/coastlines ===== |
| - | Or prescribed as in PI, with phenology computed for models with active carbon cycle or prescribed from data | + | Unchanged compared to pre-industrial |
| + | |||
| + | ===== Vegetation and land surface ===== | ||
| + | |||
| + | * Computed using a dynamical vegetation module, | ||
| + | * or prescribed as in PI, with phenology computed for models with active carbon cycle | ||
| + | * or prescribed from data | ||
| No change in ice sheet extent | No change in ice sheet extent | ||
| - | ** Carbon cycle ** | + | ===== Carbon cycle ===== |
| Interactive, with atmospheric concentration prescribed and ocean and land carbon fluxes diagnosed as recommended in CMIP5 | Interactive, with atmospheric concentration prescribed and ocean and land carbon fluxes diagnosed as recommended in CMIP5 | ||
| - | ** Dust cycle ** | + | ===== Dust cycle ===== |
| - | We invite the modelling groups planning to run simulations with an interactive dust cycle to comment on the most appropriate methodology for their model, in particular as to their ability to use a interactive vegetation description. | + | |
| + | We invite the modelling groups planning to run simulations with an interactive dust cycle to comment on the most appropriate methodology for their model, in particular as to their ability to use an interactive vegetation description. | ||
pmip3/cmip6/design/6k/index.txt · Last modified: 2016/06/20 15:34 by jypeter
