Note on estimating air-sea flux of CO2 using mean wind

Statistical properties of the air-sea flux of CO2 are estimated based on mean wind speed statistics. This is achieved by applying the same eight wind speed-dependent transfer velocity parameterizations of CO2 as used by Woolf et al. (2019) together with mean wind speed statistics from one location in the North Sea and one in the North Atlantic. These results demonstrate solely the contribution of the statistical uncertainties in terms of large standard deviations of the wind speed-dependent gas transfer velocity of the CO2 flux at both locations.