Joint Seminar: Functional interacting networks for studying hierarchical and multi-domain dynamics in the Earth system

Abstract:

Many of the processes studied in the Earth sciences involve complex hierarchical interactions between multiple fields of variables or entire Earth system subdomains. Examples are the close couplings between atmospheric and oceanic dynamics or the entwined interactions between climate and biogeochemical cycles. Functional networks (usually named climate networks in the atmospheric context) provide a natural and formally simple representation of their inherent complex interdependency structure. In these networks, vertices typically represent time series observed, aggregated or simulated at a particular location, and edges embody significant statistical relationships between time series. In this talk, an extension of standard complex network theory is introduced allowing to account for hierarchical and multi-domain structure in the statistical analysis of functional networks constructed from several fields of observables from distinct Earth system subdomains. Applications to identifying bottlenecks in the atmosphere's general circulation structure as well as potential hotspots of coupling between atmosphere and ocean dynamics in the Arctic are presented.

Date

17.10.2012

Time

13:30 h

Place

Bundesstr. 53, room 022/023
Seminar Room 022/023, Ground Floor, Bundesstrasse 53, 20146 Hamburg, Hamburg

Speaker

Jonathan Donges, (PIK, Potsdam)

Organizers

Alexander Löw

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