Edge adapted wavelets,solar magnetic activity,and climate change |
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| Authors: | R W Johnson |
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| Institution: | (1) Institute for Environmental Physics, University of Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany;(2) Instituto de Física Rosario, Consejo Nacional de Investigaciones Científicas y Técnicas and, Universidad Nacional de Rosario, Blvd. 27 de Febrero 210 Bis, S2000EZP Rosario, Argentina |
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| Abstract: | The continuous wavelet transform is adapted to account for signal truncation through renormalization and by modifying the
shape of the analyzing window. Comparison is made of the instant, integrated, and mean wavelet power with previous algorithms.
The edge adapted and renormalized admissible wavelet transforms are used to estimate the level of solar magnetic activity
from the sunspot record. The solar activity is compared to Oerlemans’ temperature reconstruction and to the Central England
Temperature record. A correlation is seen for years between 1610 and 1990, followed by a strong deviation as the recently
observed temperature increases. |
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