Trends in the Frequencies of Cyclone Activity over North America
Open Access
- 1 December 1979
- journal article
- Published by American Meteorological Society in Monthly Weather Review
- Vol. 107 (12) , 1684-1688
- https://doi.org/10.1175/1520-0493(1979)107<1684:titfoc>2.0.co;2
Abstract
Trends in cyclone frequencies over North America were determined for the period 1949–76 for four mid-season months. The general trend has been for a decrease in the number of cyclonic events, but with fluctuations. There is a tendency for the trends in frequency to be associated with trends in the mean temperature of the Northern Hemisphere and latitudinal temperature gradients as reported in the literature.Keywords
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