Characteristics of cyclone activity over the Northern Hemisphere

This research topic is developed under the sponsorship of Ministry for Education and Science of Russian Federation, Russian Foundation for Basic Research and Volkswagen Stiftung.

We designed a semiautomatic software for cyclone tracking and analysis (Grigoriev et al. 2000, Gulev et al. 2001, Zolina and Gulev 2002) and numerical scheme for cyclone identification and tracking. We developed climatology of cyclone activity over the Northern Hemisphere, the major modes of variability of cyclone characteristics over Atlantic-European sector and association of the Atlantic cyclone activity with the processes over the North Pacific, including the the NAO regime shifts, clearly seen in European cyclone activity (Gulev et al. 2001, 2002).

Of a special importance was the analysis of the NAO regime shifts, clearly seen in European cyclone activity (Gulev et al. 2001, 2002, Jung et al. 2003). Simultaneously, we described the mechanisms driving the propagation an development of cyclones under the impact of sea-air interaction processes in the North Atlantic (Zolina and Gulev 2003).

Our cyclone tracking methodology allowed for the quantitative analysis of cyclone characteristics in ECMWF model in different resolutions (Jung et al. 2006. Currently we are closely looking at the changes of cyclone geometry and construction of cyclone composites over the Atlantic Ocean and Europe (Rudeva and Gulev 2006).

Simultaneously we analyse characteristics of atmospheric synoptic activity using band-pass statistics of atmospheric variables (Gulev et al. 2002).

Recently we started to model life cycle of the midlatitudinal cyclones using WRF mesoscale model. You can see the model experimental design and the recent results here.



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