A Comparison of Greenland Ice and Baltic Sea Sediment Record—A Contribution to Climate Change Analysis

Modern methods on the Theory of Dynamical Systems, time series analysis and multidimensional statistics allow us to extract crucial information about behavior of dynamical systems from observed natural records. We applied some of these methods to two geo-climatic records from Greenland ice and Baltic Sea sediments. Decomposed and noise-free signals demonstrate the presence of ‘global’ components with concordant periodicities of about 900, 500 and 400 years in both records. Both signals correspond to complex periodical (non-chaotic) behavior. The main governing processes belong to the class of dynamical systems with weak dissipation of energy. The observed climate variability gives us an option for the correct stochastic prediction which would be impossible in the case of chaotic behavior of a climatic system.