Periodicities in the time series of annual minimum temperatures for the United States Gulf Coast region |
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| Authors: | R P Kane D Gobbi |
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| Institution: | (1) Instituto Nacional de Pesquisas Espaciais, INPE, C.P. 515, 12201 São José dos Campos, SP, Brazil |
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| Abstract: | The minimum winter temperature series for the United States Gulf Coast for 1799–1988 (190 values) was subjected to Maximum Entropy Spectral Analysis. Significant periodicities in the QBO region (T-2–3 years) and atT= 3.7, 4.5, 5.5, 6.5, 7.5, 12.9, 15.5 and 22 years were detected. Some of these were present in the first half only (1799–1893) while others in the latter half only (1894–1988), indicating a transient nature. Also, more than 50% of the variance was random. Many of the significant periodicities are seen in other geophysical parameters. Some may be harmonics of the 11-year sunspot cycle and the 22-year Hale magnetic sunspot cycle. |
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| Keywords: | Minimum temperatures USA Gulf Coast |
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