Trends in Northern Hemisphere surface cyclone frequency and intensity

Journal of Climate
By: , and 


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One of the hypothesized effects of global warming from increasing concentrations of greenhouse gases is a change in the frequency and/or intensity of extratropical cyclones. In this study, winter frequencies and intensities of extratropical cyclones in the Northern Hemisphere for the period 1959-97 are examined to determine if identifiable trends are occurring. Results indicate a statistically significant decrease in midlatitude cyclone frequency and a significant increase in high-latitude cyclone frequency. In addition, storm intensity has increased in both the high and midlatitudes. The changes in storm frequency correlate with changes in winter Northern Hemisphere temperature and support hypotheses that global warming may result in a northward shift of storm tracks in the Northern Hemisphere.
Publication type Article
Publication Subtype Journal Article
Title Trends in Northern Hemisphere surface cyclone frequency and intensity
Series title Journal of Climate
Volume 14
Issue 12
Year Published 2001
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Climate
First page 2763
Last page 2768
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