A comparison of two identification and tracking methods for polar lows

  title={A comparison of two identification and tracking methods for polar lows},
  author={L. Xia and Matthias Zahn and Kevin I. Hodges and Frauke Feser and Hans von Storch},
In this study, we compare two different cyclone-tracking algorithms to detect North Atlantic polar lows, which are very intense mesoscale cyclones. Both approaches include spatial filtering, detection, tracking and constraints specific to polar lows. The first method uses digital bandpass-filtered mean sea level pressure (MSLP) fields in the spatial range of 200 600 km and is especially designed for polar lows. The second method also uses a bandpass filter but is based on the discrete cosine… CONTINUE READING
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