The sun has more impact on the climate in cool periods

http://www.eurekalert.org/pub_releases/2015-02/au-tsh022715.php

Public Release: 27-Feb-2015
Aarhus University

The activity of the Sun is an important factor in the complex interaction that controls our climate. New research now shows that the impact of the Sun is not constant over time, but has greater significance when the Earth is cooler.

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"We know that the Sun is very important for our climate, but the impact is not clear. Climate change appears to be either strengthened or weakened by solar activity. The extent of the Sun's influence over time is thus not constant, but we can now conclude that the climate system is more receptive to the impact of the Sun during cold periods - at least in the North Atlantic region," says Professor Marit-Solveig Seidenkrantz, Aarhus University, who is one of the Danish researchers in the international team behind the study.

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