Differences

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--- pmip3:design:8k2:index [2010/03/30 11:16] – renssen
+++ pmip3:design:8k2:index [2012/03/07 22:59] (current) – morrill
@@ Line 9: / Line 9: @@
 <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 for 8.5 ka =====
+<note important>Information about metadata and variables to be contributed can be found here:
+{{:pmip3:docs:8k-variables.xlsx|}}</note>
+===== 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 ====
+Boundary conditions below are for 8.5 ka (i.e. before lake drainage)
 ^      ^   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  | |
-|  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  | |
 |    | |  |
-|  Solar constant  |  xxxx W/m<sup>2</sup>  |  As in PI  |
+|  Solar constant  |  As in PI  |    |
 |  Vegetation     |  prescribed or interactive as in CMIP5 PI  |    |
 |  Ice sheets      |  Remnant Laurentide ice-sheet (provided*)  |  Same as PI  |
@@ Line 29: / Line 36: @@
 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 ====
@@ Line 38: / Line 58: @@
   * 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 ====