Dear Authors:

Thank you for contribution to Biogeosciences and for sending your replies to referee comments. Both reviewers concluded that your manuscript is within the scope of Biogeosciences, although they recommended thorough revision including improvement of readability. I studied your response and conclude that it looks adequate to proceed to the next step. As you stated that Results and Discussion sections would be merged into “Results and Discussion”, I strongly recommend preparing the revised manuscript in a sufficiently integrated (i.e., well-structured and no-redundant) manner. Also, please double check the usage, units, and signs of variables such as NEE and GPP.

Dear Authors:

Thank you for sending you revised manuscript “Uncertainty analysis of gross primary production partitioned from net ecosystem exchange measurements” to Biogeosciences. I studied your response and the third version of the manuscript, and conclude that it was adequately revised for publication. Only I have a few technical clarifications.
1) Table 1: Unit of Rb is g CO2 m–2 s–1. Is this correct? Reco takes mg CO2 m–2 s–1 and GPP takes g C m–2 s–1. Why not use the same unit for these fluxes?
2) Figures 1, 2, 6, and 7: Please enlarge the sequential figure symbols (e.g., (a), (b)).