pmip3:wg:degla:bc:core
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pmip3:wg:degla:bc:core [2015/02/18 13:45] – [Proposal] ruza | pmip3:wg:degla:bc:core [2025/05/15 18:00] (current) – jypeter | ||
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/* Uncomment the following ~~DISCUSSION~~ line if you want to | /* Uncomment the following ~~DISCUSSION~~ line if you want to | ||
allow users (including users who have NO write access to the page) to discuss | allow users (including users who have NO write access to the page) to discuss | ||
the content of the page | the content of the page | ||
More info here: http:// | More info here: http:// | ||
- | |||
- | /* ~~DISCUSSION|Discussion on core experiment design~~ * | ||
====== Last Deglaciation Core Experiment Design ====== | ====== Last Deglaciation Core Experiment Design ====== | ||
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[[pmip3: | [[pmip3: | ||
- | Please note, this page is a work in progress and is not ready for discussion yet. | ||
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===== Proposal ===== | ===== Proposal ===== | ||
- | Following wide consultation | + | Following wide consultation, |
- | Please use the // | + | [[http:// |
+ | \\ | ||
+ | To make sure we incorporate your comments in the final, published experiment design, please use GMD's [[http:// | ||
+ | |||
+ | The published version of the experiment design is/will be the definitive version and supersedes any differences on this wiki. Data will be available to download from this wiki when the manuscript is accepted in its final state. | ||
+ | |||
+ | Please use the // | ||
| | ||
- | For comments on specific boundary conditions, please use the // | + | There are also the following |
* [[pmip3: | * [[pmip3: | ||
* [[pmip3: | * [[pmip3: | ||
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- | ==== 21-9 ka ==== | ||
- | All core simulations must span this time-period. | + | ==== Transient simulation 21-9 ka ==== |
+ | |||
+ | All core simulations must span this time-period. | ||
+ | Please use: | ||
+ | |||
+ | * An **equilibrium-type LGM** climate simulation to initialise the transient simulation, OR a **transient 26-21 ka LGM ** simulation. See below. | ||
+ | * **[[pmip3: | ||
+ | * **[[pmip3: | ||
+ | * **CO< | ||
+ | * **CH< | ||
+ | * **N< | ||
+ | * **[[pmip3: | ||
+ | * **[[pmip3: | ||
+ | * Other boundary conditions: keep as per the LGM. For example : | ||
+ | * Vegetation can be fixed (to pre-industrial) or interactive | ||
+ | * Dust can be fixed (to pre-industrial) or prognostic \\ \\ | ||
+ | |||
+ | ==== Equilibrium-type LGM 21 ka ==== | ||
- | * A **spun-up LGM** climate simulation to initialise | + | In some cases, |
- | | + | * Orbital parameters: |
- | * **Greenhouse gases**: | + | |
- | * **CO< | + | |
- | * **CH< | + | * perihelion–180°: |
- | * **N< | + | * vernal equinox: 21st March at noon |
- | | + | * Solar constant: same as for the preindustrial |
- | * **Meltwater**: __no meltwater__ in the core. ((Global meltwater fluxes | + | * Trace gases: |
- | * Other boundary conditions: | + | |
+ | | ||
+ | | ||
+ | | ||
+ | * O3: same as PMIP3/CMIP5 preindustrial | ||
+ | * Ice sheets: [[pmip3: | ||
+ | * Topography and coastlines: as per the chosen ice sheet. Please ensure | ||
+ | * Bathymetry: Optional. If possible, as per the chosen | ||
+ | * Global ocean salinity: +1 psu | ||
+ | * Freshwater budget: Please note the PMIP LGM advice to try to avoid unnecessary ocean salinity drifts. You may need to route excess snow to the ocean. | ||
+ | * Other boundary conditions: | ||
- | ==== 26-21 ka ==== | + | ==== 26-21 ka LGM ==== |
- | For those who wish to begin their simulation from before the PMIP LGM, use: | + | For those who wish to begin their simulation from before the PMIP LGM, use the following transient data: |
- | * Orbit as per [[http://www.sciencedirect.com/science/article/pii/027737919190033Q | + | * Orbit as per [[http://journals.ametsoc.org/doi/abs/10.1175/1520-0469%281978%29035%3C2362%3ALTVODI%3E2.0.CO%3B2 |
- | * All other boundary conditions as per the PMIP LGM Working Group. \\ \\ | + | * Greenhouse gases as per [[http:// |
+ | * All other boundary conditions as per the // | ||
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- | ===== Points | + | ===== Points |
Please think about the following points and add any comments on these or any other aspects of the experiment design to the discussion section below: [Topics will be added here as they are raised below or by email.] | Please think about the following points and add any comments on these or any other aspects of the experiment design to the discussion section below: [Topics will be added here as they are raised below or by email.] | ||
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- | =====References===== | + | ===== References ===== |
- | - Berger, A. & Loutre, M. F. Insolation | + | - Berger, A. Long-Term Variations of Daily Insolation |
- Lüthi, D. et al. High-resolution carbon dioxide concentration record 650, | - Lüthi, D. et al. High-resolution carbon dioxide concentration record 650, | ||
- Veres, D. et al. The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years. Clim Past 9, 1733–1748 (2013). | - Veres, D. et al. The Antarctic ice core chronology (AICC2012): an optimized multi-parameter and multi-site dating approach for the last 120 thousand years. Clim Past 9, 1733–1748 (2013). | ||
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- Schilt, A. et al. Atmospheric nitrous oxide during the last 140,000 years. Earth Planet. Sci. Lett. 300, 33–43 (2010). | - Schilt, A. et al. Atmospheric nitrous oxide during the last 140,000 years. Earth Planet. Sci. Lett. 300, 33–43 (2010). | ||
- Argus, D. F., Peltier, W. R., Drummond, R. & Moore, A. W. The Antarctica component of postglacial rebound model ICE-6G_C (VM5a) based on GPS positioning, | - Argus, D. F., Peltier, W. R., Drummond, R. & Moore, A. W. The Antarctica component of postglacial rebound model ICE-6G_C (VM5a) based on GPS positioning, | ||
- | - Peltier, W. R., Argus, D. F. & Drummond, R. Space geodesy constrains ice age terminal deglaciation: | + | - Peltier, W. R., Argus, D. F. & Drummond, R. Space geodesy constrains ice age terminal deglaciation: |
+ | - Tarasov, L. & Peltier, W. R. Greenland glacial history and local geodynamic consequences. Geophys. J. Int. 150, 198–229 (2002). | ||
+ | - Tarasov, L., Dyke, A. S., Neal, R. M. & Peltier, W. R. A data-calibrated distribution of deglacial chronologies for the North American ice complex from glaciological modeling. Earth Planet. Sci. Lett. 315–316, 30–40 (2012) | ||
+ | - Briggs, R. D., Pollard, D. & Tarasov, L. A data-constrained large ensemble analysis of Antarctic evolution since the Eemian. Quat. Sci. Rev. 103, 91–115 (2014). | ||
+ | - Tarasov et al. Eurasian ice sheet evolution (in prep.).\\ \\ | ||
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pmip3/wg/degla/bc/core.1424263534.txt.gz · Last modified: 2015/02/18 13:45 by ruza