A long-term climatology of North Atlantic polar lows
Article first published online: 20 NOV 2008
Copyright 2008 by the American Geophysical Union.
Geophysical Research Letters
Volume 35, Issue 22, November 2008
How to Cite
2008), A long-term climatology of North Atlantic polar lows, Geophys. Res. Lett., 35, L22702, doi:10.1029/2008GL035769., and (
- Issue published online: 20 NOV 2008
- Article first published online: 20 NOV 2008
- Manuscript Accepted: 10 OCT 2008
- Manuscript Revised: 24 SEP 2008
- Manuscript Received: 21 AUG 2008
- polar low;
- North Atlantic
 A dynamical downscaling of the 6-hourly 1948–2006 NCEP/NCAR re-analyses for the subarctic region of the North Atlantic has been used to derive a climatology of polar lows by means of a tracking algorithm based on the simulated bandpass filtered MSLP-fields. This climatology is consistent with the limited observational evidence in terms of frequency and spatial distribution. The climatology exhibits strong year-to-year variability but weak decadal variability and a negligible trend. A Canonical Correlation Analysis describes the conditioning of the formation of polar lows by characteristic meridional seasonal mean flow regimes, which favor cold air outbreaks and upper air troughs.