Time scales and trends in the central England temperature data (1659\ndash1990): A wavelet analysis

Авторы: Baliunas S., Frick P., Sokoloff D., Soon W.
Журнал: Geophysical Research Letters
Том: 24
Год издания: 1997
Первая страница: 1351
Последняя страница: 1354
DOI: 10.1029/97GL01184
Аннотация: We have applied the standard wavelet and the adaptive wavelet transform algorithms to the record of the Central England Temperature (CET) from 1659–1990. Peaks in the CET spectra include 7.5±1.0 yr, 14.4±1.0 yr, 23.5±2.0 yr, as well as a previously unreported variation at 102±15 yr. Our wavelet analysis of CET agrees with previous results from Singular Spectrum Analysis (SSA) by Plaut et al. [1995] and gives additional results of variability on longer timescales. The interdecadal and century-scale variability in CET is strongly dependent on the interval of analysis. Estimates of a data trend are also shown to be sensitive to the cutoff timescale of the filter. A cooling of ≈ 0.3°C during 1659–1720 is found relative to the temperatures during the 1800s. The complex time dependence of the actual data cautions against using model-derived representations of natural variability on such long timescales.
Добавил в систему: Соколов Дмитрий Дмитриевич

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