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Last Millennium Experimental Design

Page in progress: this is not the final version! Use the discussion panel at the end of the page for comments

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	[ CO2 = ppm ] - [ CH4 = ppb ] - [ N2O = ppb ] - [ CFC = ] - [ O3 = ]
Aerosols
Solar constant	W/m2
Vegetation
Ice sheets
Topography and coastlines

Please use the 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 (MPI-M Hamburg)

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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