[CF-metadata] Chaotic Proposed Standard Name

[Jonathan Gregory]

I can imagine we may need such names, but it strikes me that a more specific
application is needed to motivate a choice of name. Do you have a case yourself
where you need this? Jonathan

> lyapunov_exponent: 1: a measure that determines for each point of phase space, how quickly trajectories that begin in this point diverge over time. The number of Lyapunov exponents is equal to the number of dimensions of the embedding phase space, but it is common to just refer to the largest one, because it determines the predictability of a dynamical system. 
> 
> Or perhaps this be better named as:
> lyapunov_exponent_of_point
> 
> Or maybe:
> lyapunov_exponent_of_point_in_air 
> and
> lyapunov_exponent_of_point_in_sea_water