Some connections between the cosmic ray intensity, Solar activities and Hurricane formations.

Physics

Scientific paper

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Scientific paper

Recently some indications appeared that several purely meteorological processes in the terrestrial atmosphere are connected with the changes in cosmic ray (CR) intensity, are influenced by solar activity; and are dependent on magnetosphere variations (Tinsley, 2000; Tinsley and Beard, 1997). To analyze these possible relationships to North Atlantic hurricane formation and intensification, we examine data on CR intensity variations, sunspot (Ss) numbers, and geomagnetic index (KP) for several days preceding the hurricane. All recorded North Atlantic hurricanes in the last 50 years (1950-1999) are analyzed. A decrease in CR intensity is noted on the day of hurricane formation and sunspot activity shows a local maximum several days before hurricane intensity is reached. Neither of these results stands above the nominal statistical significance level. In contrast a significant positive correlation between the KP index and maximum hurricane intensity is established.

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