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====== Last Millennium Experimental Design ======

<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>

The basic principle is that we should strive to include all relevant transient forcings over this period if the functionality exists in the model, noting that conformability with the CMIP5 controls and 20th Century transient is crucial. 

===== Boundary conditions =====
==== Summary of Last Millennium boundary conditions ====

^      ^   PMIP3  ^  Alternative solution  ^
|  Orbital parameters  |  Annually varying (850-1850) |  1850 values or same Pre-Ind CMIP5 control | 
|                |   Table provided if not internally calculated |[ **ecc** =  ] - [ **obl** = ° ] - [ **peri-180°** = ° ]  | 
|  Date of vernal equinox  | Mar 21 hr 0  | same as CMIP5 control |
|  Trace gases  |  Annually varying (850-1850) | constant at CMIP5 control levels | 
|               |  Table provided | [ **CO<sub>2</sub>** =  ppm ] - [ **CH<sub>4</sub>** =  ppb ] - [ **N<sub>2</sub>O** =  ppb ] - [ **CFC** =  ] - [ **O<sub>3</sub>** =  ]  | 
|  Volcanic Aerosols  |    | |
|    | |  |
|  Solar irradiance  |  W/m<sup>2</sup>  |    |
|  Aerosols  |    | |
|  Vegetation      | Land use conversion (forests to C3/C4 crops) (Pongratz, 2008, Foley and Ramunkutty)   |  No change from Pre-Ind control   |
|                  | available from WDCC-Hamburg (URL?)   |   |
|  Ice sheets      |  No changes from Pre-Ind control  |    |
|  Topography and coastlines  | No change from Pre-Ind control   |    |

Please use the [[index#page_bottom_tag|discussion]] panel to **comment** this table!


===== Initial conditions =====

===== Additional information =====

==== Total Solar Irradiance ====


The following figure (click to get the full-size image) has been provided by [[johann.jungclaus@zmaw.de|Johann Jungclaus]] (MPI-M Hamburg)

{{:pmip3:design:lm:xsolarpag.png?500|Click to get the full-size image}}

Time series of TSI (Wm-2) from 800AD to 2000. For the COSMOS (MPI-M)
Millennium simulations (black curve), a 11 year cycle was added for consistency over the
entire period.

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