At https://tallbloke.wordpress.com/2016/01/05/de-rops-long-term-lunar-cycle/ … is about a paper by Willy de Rop of the Royal Observatory of Belgium and concerns the idea of an 1800 year tidal period caused by a lunar wobble. However, the author of the piece at Tall Bloke's Talk Shop, one Oldbrew, sees a link with the 60 year solar cycle. The solar cycle in turn peaks in temperature in the 1930s and the 1990s. Climate scientists do not like the 60 year cycle as it suggests so called global warming is cyclic – and ice melt and ice growth at the Poles is also cyclic. However, the numbers do not end there but you may need to be on calculations to understand what is then being projected. This includes the idea of the Earth-Moon system oscillating at the same periodicities as the Gleissberg cycle of 90 years and the Jose cycle of 180 years with roughly similar timings as the Maunder/ Dalton/ and Landschiedt solar grand minimums and the appoximate realigment of the gas giant planets.
See also http://onlinelibrary.wiley.com/doi/10.1029/2012GL052885/pdf … and there is also the possibility also of a 60 year oscillation in global ocean sea levels, as seen in tideal guage records.