Interactive comment on “Satellite measurements of the global mesospheric sodium layer” by Z. Y. Fan et al

We thank the referees for their positive response to the paper, and their useful comments. We have revised the paper to take these into account. Our responses to each referee are listed below. The referee’s comments are shown in single quotation marks. Where we indicate changes that have been made in the revised paper, double quotation marks are used. Referee #1: 1. ’The full width at half maximum (FWHM) of the Na layer is smaller in September than in March at all latitudes (Figure 4), but the total column density in Fig. 1 does not show this pattern.’ We thank the referee (and Referee #3) for pointing this out. In fact, the version of Figure