Department of Physics, Bar Ilan University, Israel

Recent research interests: Statistical physics applied to complex networks, physiology and climate.

How does El-Nino influence the dynamics of climate network in their basin, and around the globe?

(with A. Gozolchiani)

The temporal correlations between records of temperature and between records of height can be regarded as a dynamical climate network. The network's response in different worldwide regions to El-Nino Southern Oscillation (ENSO) is shown to be much stronger compared to the response of the classical measures such as mean and variance of temperature or height level [1]. The network dynamical response to El-Nino is found to be in the form of links that become unstable appear and disappear during El-Nino periods [2]. We find that the responding links tend to be the same during all the strong events. When studying the behavior of weighted nodes we find that during El-Nino events many nodes inside the El-Nino basin lose their strong dependence on their surrounding nodes, but still keep influencing them.

[1] K. Yamasaki, A. Gozolchiani, S. Havlin, Phys. Rev. Lett. 100, 228501 (2008).
[2] A. Gozolchiani, K. Yamasaki, O. Gazit, S. Havlin, EPL 83, 28005 (2008).