Serial clustering of intense European storms

@article{Vitolo2009SerialCO,
  title={Serial clustering of intense European storms},
  author={Renato Vitolo and David B. Stephenson and Ian M. Cook and Kirsten Mitchell-Wallace},
  journal={Meteorologische Zeitschrift},
  year={2009},
  volume={18},
  pages={411-424}
}
This study has investigated how the clustering of wintertime extra-tropical cyclones depends on the vorticity intensity of the cyclones, and the sampling time period over which cyclone transits are counted. Clustering is characterized by the dispersion (ratio of the variance and the mean) of the counts of eastward transits of cyclone tracks obtained by objective tracking of 850 hPa vorticity features in NCEP-NCAR reanalyses. The counts are aggregated over non-overlapping time periods lasting… 

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