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-====== Publications ======
-{{stars:846_ftp.pdf|A climatological study of polar lows in the Nordic Seas}}
-//Citation: Noer G, Saetra Ø, Lien T, Gusdal Y. 2011. A climatological study of polar lows in the Nordic Seas.
-Q. J. R. Meteorol. Soc. DOI:10.1002/qj.846//
-**Abstract:**The climatology of polar lows over the Nordic Seas has been investigated using
-infrared satellite images for the period between 2000 and 2009. The same region was
-studied in the 1980s using traditional weather charts for the period between 1972
-and 1982. One motivation for the present study was to revisit this climatology, but
-using a different decade and taking advantage of the vastly improved coverage and
-dissemination of infrared satellite images since the 1980s. The fact that forecasters
-at the Norwegian Meteorological Institute had introduced a routine to register
-polar-low events systematically from 2000 and onward also provided a unique
-opportunity for extending the existing repository of subjectively identified polar-
-low observations. On average we found 12 polar-low events per year in the region
-of study. This is more than the earlier investigation, but we believe that this can
-be explained by the fact that the previous study relied almost uniquely on weather
-charts with very little information from ocean areas in the Nordic Seas. The largest
-numbers were found in January with an average of 2.8 polar-low events per year.
-The study reconfirms the February minimum found in previous studies, but on the
-basis of our data we could not show that this minimum is statistically significant.
-It is suggested that this may be explained as a manifestation of the coldest winter
-month, when a surface-pressure high over the Scandinavian mainland is common
-and the large-scale atmospheric flow is less favourable to polar-low formation. This
-hypothesis was tested by calculating the mean sea-level pressure (MSLP) anomaly
-for January, February and March from an atmospheric reanalysis. This revealed a
-positive anomaly over Scandinavia and northwest Russia not found in the pressure
-distributions for January and March.