Guest post by David Archibald
There were five named solar minima in the last millennium – the Oort, Wolf, Spörer, Maunder and Dalton minima. At least the last four were all associated with cold climates. The astrophysics community has elected to name the current period of low solar activity the Eddy Minimum. John A. Eddy was an American astronomer who compiled data demonstrating the periods of low solar activity prior to the Dalton Minimum.