Noise-induced generation of saw-tooth type transitions between climate attractors and stochastic excitability of paleoclimateDmitri V. Alexandrov, Irina A. Bashkirtseva and Lev B. RyashkoEur. Phys. J. B, 88 11 (2015) 304DOI: https://doi.org/10.1140/epjb/e2015-60659-2