Comment on “Characteristic Time Scales of Decadal to Centennial Changes in Global Surface Temperatures Over the Past 150 Years” by J. L. Le Mouël, F. Lopes, and V. Courtillot

Based on Singular Spectral Analysis (SSA) analysis of global earth surface temperature and solar activity (sunspots), Le Mouël et al. (2020, https://doi.org/10.1029/2019EA000671) suggest that the variability in Earth observed since 1850 is natural controlled by Sun. We cannot agree with their conclusions for several reasons: lack compelling results from Fourier spectra SSA estimates which are provided without confidence intervals, small radiative forcing associated sunspot variability, finally simple evidence slowly varying components sunspots time show opposite trends last 30 years.