A new albedo model constructed for stochastic resonance simulation on 100ka climate cycle

In the research on stochastic resonance, the albedo model is the most important issue. Based on the new geological evidence and observational data, combining with the classical albedo model, A new albedo model is built for the 100ka climate cycle. Using the new albedo model, a lot of stochastic resonance simulations is carried out. The results shows that when the noise intensity in earth-atmosphere system is about 0.25–0.37, the stochastic resonance will happen with the cycle of 10°C temperature amplitude. These simulation results is in accordance with the climate change facts and Benzi's research. It also proves that the new albedo model is reliable and useful.