Following on from my analysis of the Armagh maximum temperature record, here is the longest instrumental temperature record in the world:
The blue line is the least squares fit.
During the period 1659-2010, the CET temperature rose by 0.9ºC.
The Fourier Analysis:
Like the Armagh record, there is no periodic signal in the data other than the yearly cycle and two harmonics (6 months and 3 months, duh)