The arctic temperatures and arctic ice extent varies in a very predictable 60 - 70 year cycle that relates to ocean cycles which are likely driven by solar changes. (tamino.wordpress.com)
A number of questions need to be answered if we are to understand the impact of solar changes on the climate system. (gcrio.org)
The paper in question looks at only two of the three mechanisms by which solar changes affected planetary temperature. (realclimate.org)