JSM 2004 - Toronto

Abstract #300232

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Activity Number: 94
Type: Invited
Date/Time: Monday, August 9, 2004 : 10:30 AM to 12:20 PM
Sponsor: Section on Statistics and the Environment
Abstract - #300232
Title: Statistics of Low-frequency Solar Variability in Paleoclimate and Model Data
Author(s): Hee-Seok Oh*+ and Caspar Ammann and Philippe Naveau
Companies: University of Alberta and University Corporation for Atmospheric Research and University of Colorado, Boulder
Address: Department of Math and Statistical Science, Edmonton, AB, T6G 2G1, Canada
Keywords: solar activity ; wavelet analysis ; paleoclimate
Abstract:

We present statistical analyses of proxies of different solar activity measures from the last millenium. Using nondecimated discrete wavelet transform, the spatial features of solar-modulated climate variations are extracted from proxy records and from two model experiments. We discuss important aspects of coherency and stationarity for the known solar variations at 11/22-, 80-88-, and 200-year cycles and quasi-cycles. Finally, we present a statistical framework which can help identify mechanisms and feedbacks involved in translating a solar-modulated perturbation into the Earth's climate system.

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