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pmip3:design:8k2:index [2010/02/11 15:57]
jypeter
pmip3:design:8k2:index [2012/03/07 21:59] (current)
morrill
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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>​
 +
 +<note important>​Information about metadata and variables to be contributed can be found here:
 +{{:​pmip3:​docs:​8k-variables.xlsx|}}</​note>​
  
 ===== Boundary conditions ===== ===== Boundary conditions =====
 +
 +<​note>​The following are ideal boundary conditions, but experiments that deviate from these boundary conditions may also be contributed if complete metadata are provided. </​note>​
  
 ==== 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.1265903837.txt.gz · Last modified: 2010/02/11 15:57 by jypeter