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Extratropical cyclone variability in the Northern Hemisphere winter from the NCEP/NCAR reanalysis data

TitleExtratropical cyclone variability in the Northern Hemisphere winter from the NCEP/NCAR reanalysis data
Publication TypeManual Entry
Year of Publication2001
AuthorsGulev, S. K., O. Zolina, and S. Grigoriev
Climate Dynamics
Volume17
Issue10
Pagination795-809
Date Published2001
PublisherSpringer-Verlag
0930-7575
URLhttp://dx.doi.org/10.1007/s003820000145
Short TitleClimate Dynamics
Citation Key1089
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Community Notes

about the data:

"We used 6-hourly NCEP/NCAR SLP felds on a 2.5 by
2.5° grid for the Northern Hemisphere for the period 1958-1999.
These data are considered to be instantaneous values at the refer-
ence time. We considered the winter period from January to
March"

findings directly taken from the article's text:

"Cyclogenesis over the North American continent
is less common than in the primary storm formation
regions. Cyclogenesis over the Great Lakes, frequently
considered one of the major sources of the Atlantic
cyclones, is considerably weaker than over the Rocky
Mountains and eastern North American coast."

There is a decreasing trend in the number of cyclones over N. America

The Atlantic sector experienced -8.9 events/decade (statistical significance P=0.99) of which -6.2 events/decade are in the 980-1000hPa intensity.

 

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