Atmospheric column-average methane mole fractions measured with ground-based Fourier-transform spectroscopy near Saint Petersburg, Russia (59.9 N, 29.8 E, 20ma.s.l.) are compared with similar data obtained with the Japanese GOSAT (Greenhouse gases Observing SATellite) in the years 2009–2012. Average CH4 mole fractions for the GOSAT data version V01.xx are −15.0±5.4 ppb less than the corresponding values obtained from groundbased measurements (with the standard deviations of biases at 13.0±4.2 ppb). For the GOSAT data version 02.xx, the average values of the differences are −1.9±1.8 ppb with standard deviations of 14.5±1.3 ppb. This verifies that FTIR (Fourier transform infrared) spectroscopic observations near Saint Petersburg have similar biases with GOSAT satellite data as FTIR measurements at other ground-based networks and aircraft CH4 estimations.