pmip3:cmip6:design:6k:index
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pmip3:cmip6:design:6k:index [2015/03/24 21:21] masa |
pmip3:cmip6:design:6k:index [2015/03/27 10:38] jypeter Cosmetic changes |
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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 | ||
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| **perihelion-180°** = 0.87° | **perihelion-180°** = 0.87° | ||
| - | **Concentration of atmospheric trace gases:** | + | **solar constant** = same as in pre-industrial |
| - | CO2 = 280 ppm | + | ===== Concentration of atmospheric trace gases ===== |
| - | CH4 = 650 ppb | + | **CO<sub>2</sub>** = 280 ppm |
| - | N2O = 270 ppb | + | **CH<sub>4</sub>** = 650 ppb |
| - | CFC = 0 | + | **N<sub>2</sub>O** = 270 ppb |
| - | O3 = same as in CMIP5 PI | + | **CFC** = 0 |
| + | **O<sub>3</sub>** = same as in CMIP5 PI | ||
| - | ** Topography/bathymetry/coastlines **: unchanged compared to pre-industrial | ||
| - | ** Vegetation and land surface:** | + | ===== Topography/bathymetry/coastlines ===== |
| - | Computed using a dynamical vegetation module, | + | Unchanged compared to pre-industrial |
| - | Or prescribed as in PI, with phenology computed for models with active carbon cycle or prescribed from data | + | ===== 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 ===== | ||
| + | |||
| + | 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
