Multiplicity of the Discrete Delay Time of the Response of the Solar Total Irradiance Variation to the Long-Term Solar Magnetic Cycle Amplitude Modulation Deduced from the Greenland10Be Data

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概要

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• We found an observational evidence of the multiplicity of the discrete delay time on the order of 200 and 1000 years of the response of the solar total Irradiance variation to the solar magnetic cycle amplitude variation in the time profiles of the variations. We used the10Be data in the annual layers of the ice cores of the Greenland as a proxy of the solar magnetic field variation. We also used the land air temperature anomalies, reconstructed from tree-ring growth rates, as a proxy of the solar total Irradiance variation. The delay time of 1000 years means that the Medieval Warm Epoch of the Earth around the 13th and 14th centuries is a result of release of heat stored in the solar convection zone around the 3rd and 4th centuries when the solar magnetic activity was high.

著者

• YOSHIMURA Hirokazu

  Department of Astronomy, University of Tokyo

関連論文

• Multiplicity of the Discrete Delay Time of the Response of the Solar Total Irradiance Variation to the Long-Term Solar Magnetic Cycle Amplitude Modulation Deduced from the Greenland10Be Data

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