Harmonic Analysis of Worldwide Temperature Proxies for 2000 Years

by H.J. Lüdecke and C.A. Weiss, August 2017

We provide a new confirmation for the link between solar activity and climate cycles by wavelet analysis showing a remarkably good agreement of the power of the ~190 – year period for temperatures and solar activity over 9000 years (see Fig.4. lower panel). As (Fig.2 and Table 2 ) show, the periods of ~1000 and ~460 years are also apparently common in records of temperatures and cosmogenic nuclides.

See also here and  here