  Noise induced jumping between meta-stable states in a potential depends on
the structure of the noise. For an $\alpha$-stable noise, jumping triggered by
single extreme events contributes to the transition probability. This is also
called Levy flights and might be of importance in triggering sudden changes in
geophysical flow and perhaps even climatic changes. The steady state statistics
is also influenced by the noise structure leading to a non-Gibbs distribution
for an $\alpha$-stable noise.
