Creative Commons Attribution-Share Alike 4.0 truetrue English Graphs of sunspot number and northern hemisphere temperature since 800AD determination method or...
the principal causes of the chilly Little Ice Age, circa 1350-1850 A.D. This figure was prepared by Robert A. Rohde and is part of the Global Warming Art...
activity during the Maunder Minimum and earlier periods may be among the principle causes of the Little Ice Age. Similarly, the Modern Maximum is partly...
, and K. H. Schatten (1998a). "Group sunspot numbers: A new solar activity reconstruction. Part 1.". Solar Physics 179: 189-219. Hoyt, D. V., and K....
subject to Crown copyright and was first published more than 50 years ago, or it was not subject to Crown copyright, and 2. it is a photograph that was...
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