pmip3:design:8k2:index
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pmip3:design:8k2:index [2010/03/30 09:17] renssen |
pmip3:design:8k2:index [2011/11/25 10:07] pmip3adm Closed the discussion to prevent spamming |
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| <note warning>**Page in progress**: this is not the final version!\\ \\ Use the [[index#page_bottom_tag|discussion]] panel at the end of the page for comments </note> | <note warning>**Page in progress**: this is not the final version!\\ \\ Use the [[index#page_bottom_tag|discussion]] panel at the end of the page for comments </note> | ||
| ===== Boundary conditions ===== | ===== Boundary conditions ===== | ||
| - | |||
| ==== Summary of 8.2ka boundary conditions ==== | ==== Summary of 8.2ka boundary conditions ==== | ||
| + | Boundary conditions below are for 8.5 ka (i.e. before lake drainage) | ||
| ^ ^ PMIP3/CMIP5 ^ Minimum solution ^ | ^ ^ PMIP3/CMIP5 ^ Minimum solution ^ | ||
| - | | Orbital parameters | [ **ecc** = 0.xxxxx ] - [ **obl** = xx.xxx° ] - [ **peri-180°** = 0.xx° ] | | | + | | Orbital parameters | [ **ecc** = 0.19199 ] - [ **obl** = 24.222° ] - [ **peri-180°** = 319.495° ] | | |
| | Date of vernal equinox | March 21 at noon | | | | Date of vernal equinox | March 21 at noon | | | ||
| - | | Trace gases | [ **CO<sub>2</sub>** = xxx ppm ] - [ **CH<sub>4</sub>** = xxx ppb ] - [ **N<sub>2</sub>O** = xxx ppb ] - [ **CFC** = xxx ] - [ **O<sub>3</sub>** = same as PI ] | | | + | | Trace gases | [ **CO<sub>2</sub>** = 260 ppm ] - [ **CH<sub>4</sub>** = 660 ppb ] - [ **N<sub>2</sub>O** = 260 ppb ] - [ **CFC** = xxx ] - [ **O<sub>3</sub>** = same as PI ] | | |
| | Aerosols | Same as PI | | | | Aerosols | Same as PI | | | ||
| | | | | | | | | | | ||
| - | | Solar constant | xxxx W/m<sup>2</sup> | As in PI | | + | | Solar constant | As in PI | | |
| | Vegetation | prescribed or interactive as in CMIP5 PI | | | | Vegetation | prescribed or interactive as in CMIP5 PI | | | ||
| | Ice sheets | Remnant Laurentide ice-sheet (provided*) | Same as PI | | | Ice sheets | Remnant Laurentide ice-sheet (provided*) | Same as PI | | ||
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| Please use the [[index#page_bottom_tag|discussion]] panel to **comment** this table! | Please use the [[index#page_bottom_tag|discussion]] panel to **comment** this table! | ||
| + | ==== Freshwater forcing ==== | ||
| + | |||
| + | Two different types of freshwater forcing: the background melt-flux from the Laurentide Icesheet, and the Lake Agassiz drainage. The former supposedly prevented Labrador Sea deep convection (see Hillaire-Marcel et al. 2006 GRL) | ||
| + | |||
| + | **Proposed Background Early Holocene melt-water forcing** (mandatory) | ||
| + | | Flux | 0.05 Sv over 500 years | | ||
| + | | Location | Either part or all of the Labrador Sea (up to the individual modeling groups, as long as it is not added outside the Labrador Sea)| | ||
| + | |||
| + | **Proposed Lake Agassiz drainage** (mandatory): | ||
| + | | Flux | 2.5 Sv over 1 year | | ||
| + | | Location | Either part or all of the Labrador Sea (up to the individual modeling groups, as long as it is not added outside the Labrador Sea)| | ||
| + | | Ensemble | this experiment should be completed at least three times, beginning at different years in the control simulation| | ||
| + | | Duration | experiment should be integrated until the AMOC recovers, except in the case of unrealistically long (i.e., multicentury) recoveries| | ||
| ==== Vegetation ==== | ==== Vegetation ==== | ||
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| * Computed by the model (models with dynamic vegetation) | * Computed by the model (models with dynamic vegetation) | ||
| - | There are still questions concerning the possibility to have a 6ka reconstructed vegetation from a combination of model output and data analyses that could be used for sensitivity experiments. Please tell if you are interested by such a map and what would be the best variables (pft?) that should be provided (see comment from B. Otto-Bliesner in the discussion pannel). | ||
| - | ==== For Earth System Models with interactive carbone cycle ==== | + | ==== For Earth System Models with interactive carbon cycle ==== |
| - | The simulations are forced by CO2 concentrations. Please use the same protocol as in CMIP5 to store the carbone fluxes and the variables needed for PCMIP (see list here) | + | The simulations are forced by CO2 concentrations. Please use the same protocol as in CMIP5 to store the carbon fluxes and the variables needed for PCMIP (see list here) |
| ==== Insolation ==== | ==== Insolation ==== | ||
pmip3/design/8k2/index.txt · Last modified: 2012/03/07 21:59 by morrill
