Dynamical proxies of North Atlantic predictability and extremes.

ABSTRACT: Atmospheric flows are characterized by chaotic dynamics and recurring large-scale patterns. These two characteristics point to the existence of an atmospheric attractor defined by Lorenz as: "the collection of all states that the system can assume or approach again and again, as opposed to those that it will ultimately avoid". The average dimension D of the attractor corresponds to the number of degrees of freedom sufficient to describe the atmospheric circulation. However, obtaining reliable estimates of D has proved challenging. Moreover, D does not provide information on transient atmospheric motions, such as those leading to weather extremes. Using recent developments in dynamical systems theory, we show that such motions can be classified through instantaneous rather than average prop

SUBMITTER: Faranda D 

PROVIDER: S-EPMC5264183 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature