Computer Science
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ge%26ae..47..371i&link_type=abstract
Geomagnetism and Aeronomy, Volume 47, Issue 3, pp.371-374
Computer Science
1
94.30.Lr, 92.60.Qx
Scientific paper
The correlation between cyclic (11-year) variations in geomagnetic activity and tropical cyclogenesis during the completed solar activity cycle (cycle 23, 1996 2006) is studied. The total number of the semidiurnal intervals, with the mean values of the planetary a p index not less than 40, for each year and the annual number of cyclones, regardless of their intensity, are used as the characteristics. The correlation coefficients r are calculated for each of the following four cyclogenesis regions: the Atlantic, northeastern and central Pacific, northwestern Pacific, and water areas of oceans and seas in the Southern Hemisphere. The conclusion that the correlation exists between magnetic storms and tropical cyclones in the Atlantic, obtained earlier by Ivanov [2006] on the basis of the data for 1996 2005, is confirmed. It has been found that the linear correlation coefficient r changed in different regions from positive to negative values: 0.55, 0, -0.50, and -0.50, respectively.
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