The record may not be fully known but it is known that it contains centennial time scale variablity that the models won't be able to reproduce. (realclimate.org)
The platform will complement existing GMES / Copernicus pre-operational components, but will focus on datasets which provide information on climate variability on decadal to centennial time scales from observed and projected climate change impacts in Europe, and will provide a toolbox to generate, compare and rank key indicators. (climateurope.eu)
The primary objective of this work was to expand upon the capabilities of past GFDL models used to study climate on seasonal to centennial time scales by the addition of a comprehensive and interactive carbon cycle in the land, ocean and atmosphere to «close the carbon cycle» in the same way we do for water and energy in a traditional climate model. (gfdl.noaa.gov)