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Stomata data do not suffer from these problems and indicate that the recent rates of change to atmospheric concentration of carbon dioxide have repeatedly occurred in recent millennia and during transition from the last ice age. [Richard Courtney (Reviewer’s comment ID #: 49-3)] SPM- A 3:30 3:30 Add at beginning "Most of the".

As a corollary of this responsiveness, stomatal frequency analysis of fossil leaves enables the detection and quantification of atmospheric CO2 changes at different time scales (14, 17-25).” [Richard Courtney (Reviewer’s comment ID #: 49-53)] TS-148 A 6:42 6:42 Refer to Figure TS-2.

SPM Comment: Delete the word “Widespread” because the table does not show that (it only says they happened), and the word “widespread” is not defined or justified in the table or the bulk of the document. [Richard Courtney (Reviewer’s comment ID #: 49-15)] SPM- A 8:17 8:18 Slightly picky comment, but speaking of "warm" and "cold" temperatures is like Rejected.

The inherent errors Rejected, see chapters 8 and 10. 1023 2 2 of the simulations are not known so the outputs of the simulations cannot be “quantitative” (a result is not quantitative merely because it is presented as a number). [Richard Courtney (Reviewer’s comment ID #: 49-26)] SPM- A 11:4 11:4 Model intercomparisons may not represent the full range of structural Reject comment.

This emphasized by the sentence of the TS (p TS-8 lines 31-32 that admits the uncertainties concerning natural sources. [Richard Courtney (Reviewer’s comment ID #: 49-65)] TS-203 A 8:27 8:28 how can we know the sum of the emissions better than we know the individual Sentence added for clarification components?

However, it cannot be excluded that the production rate from other sources, such as microbiological activity, among others, could have increased. ” [Richard Courtney (Reviewer’s comment ID #: 49-46)] TS-99 A 5:48 5:48 Insert before "carbon" "water vapour" Rejected - the sentence is about long [VINCENT GRAY (Reviewer’s comment ID #: 88-1905)] lived species that are emitted and as covered in Chapter 2 anthropogenic water vapor emissions are not significant.

[Govt. of United Kingdom (Reviewer’s comment ID #: 2022-134)] SPM- A 10:1 I would think that one could characterize this with some confidence as "very" Rejected.

imply that physical reasoning leads to this expectation. [Richard Courtney (Reviewer’s comment ID #: 49-31)] SPM- A 12:2 12:2 Add at end "But it is not known to what extent" Rejected no rationale given 1134 2 2 [VINCENT GRAY (Reviewer’s comment ID #: 88-2240)] SPM- A 12:2 12:3 There is a contradiction between the decades given on top of the plots (2011- Accepted.

Page:Line Comment Response ludicrously ambitious. [Richard Courtney (Reviewer’s comment ID #: 49-36)] SPM- A 14:2 14:3 This seems to me a little more obvious and missing out the more important point Partly accepted.

If their accumulated errors were at the rate of [0.2 degrees C / 30 years] throughout the twentieth century, then this would account for all the ~0.6 degrees C rise they indicate occurred throughout that century. [Richard Courtney (Reviewer’s comment ID #: 49-10)] SPM- A 6:38 6:38 Replace "linear" with "average".