pmip3:cmip6:design:6k:index
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pmip3:cmip6:design:6k:index [2015/03/24 22:29] – masa | pmip3:cmip6:design:6k:index [2016/06/20 17:34] (current) – Added link to experimental design on PMIP4 web site jypeter | ||
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====== PMIP-CMIP6 Experimental Design Discussion: Mid-Holocene ====== | ====== PMIP-CMIP6 Experimental Design Discussion: Mid-Holocene ====== | ||
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+ | <note warning> | ||
<note tip>\\ Please submit your comments in the Discussion section at the end of this page</ | <note tip>\\ Please submit your comments in the Discussion section at the end of this page</ | ||
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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, | + | For the **mid-Holocene**, our proposed experimental set-up for PMIP-CMIP6 is unchanged compared to the [[pmip3: |
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+ | ===== Orbital parameters ===== | ||
The main forcing is the ** insolation **, and the astronomical parameters must be set to: | The main forcing is the ** insolation **, and the astronomical parameters must be set to: | ||
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**perihelion-180°** = 0.87° | **perihelion-180°** = 0.87° | ||
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+ | **Date of vernal equinox** = March 21 at noon | ||
**solar constant** = same as in pre-industrial | **solar constant** = same as in pre-industrial | ||
- | **Concentration of atmospheric trace gases:** | + | ===== Concentration of atmospheric trace gases ===== |
- | CO2 = 280 ppm | + | **CO< |
- | CH4 = 650 ppb | + | **CH< |
- | N2O = 270 ppb | + | **N< |
- | CFC = 0 | + | **CFC** = 0 |
- | O3 = same as in CMIP5 PI | + | **O< |
- | ** Topography/ | + | ===== Topography/ |
- | ** Vegetation and land surface:** | + | Unchanged compared to pre-industrial |
- | Computed using a dynamical vegetation module, | + | ===== Vegetation and land surface ===== |
- | Or prescribed as in PI, with phenology computed for models with active carbon cycle or prescribed from data | + | * 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, | Interactive, | ||
- | ** 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.1427232556.txt.gz · Last modified: 2015/03/24 22:29 by masa