Several models have been produced recently suggesting
outcomes to various global climate change
situations. Models incorporate and combine
knowledge about individual processes in a quantitative
way, yet they typically have intrinsic limitations
because they are simplifying a complex
system, and using often incomplete and inaccurate
knowledge (Trenberth, 1997; Rahmstorf, 2002).
Ultimately, modeling is a compromise among
inclusion of processes, level of complexity, and
desired resolution (Rahmstorf, 2002). Assessment
of their accuracy is possible by comparing model
outcomes to climate reconstructions