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Temperature response of Earth to the annual solar irradiance cycle

David H. Douglass, Eric G. Blackman, Robert S. Knox

astro-pharXiv:astro-ph/0403271

Abstract

We directly determine the sensitivity and time delay of Earth's surface temperature response to annual solar irradiance variations from 60 years of data. A two-layer energy balance model is developed to interpret the results. Explaining both the resulting low sensitivity and time delay of 1-2 months requires negative feedback.

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