Dear Jinho Ahn, Ji-Woong Yang and Co-Authors,

Your paper ms tc-2019-231 ('Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice-wedges') has received comments from two reviewers. Both reviewers recommend major revisions of the manuscript and provide what I find to be constructive comments on how the manuscript could be improved. You have already provided responses to the reviewers' comments, and I have decided to send your revised manuscript on another round of reviews.

I look forward to continue the process toward a final publication in TC.

Ylva Sjöberg

Dear Jinho Ahn, Ji-Woong Yang and Co-Authors,

Your revised manuscript tc-2019-231 ('Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice-wedges') has received comments from two reviewers. One of them recommends publication after technical revisions and the other recommends publication after minor revisions. They both agree that your manuscript has greatly improved from the revisions.

I have decided that the manuscript be published after minor revisions, which means that the manuscript will not be sent out to reviewers again but will instead be reviewed by me (the handling editor). Please address the comments from Referee # 1 and note that the manuscript can only be accepted for publication in TC after the data has been made publicly available.

Sincerely,
Ylva Sjöberg

Dear Jinho Ahn, Ji-Woong Yang and Co-Authors,

Thank you for submitting your revised manuscript tc-2019-231 ('Brief Communication: The reliability of gas extraction techniques for analysing CH4 and N2O compositions in gas trapped in permafrost ice-wedges') and replies to comments from the reviewers.

Based on your revisions and responses to the comments, I have decided that the manuscript is ready for publication after the following technical revisions:
1) Add the doi of the published dataset to the Data availability statement.
2) Revise the Competing interests statement to "The authors declare no conflicts of interest."

I look forward to seeing this manuscript published as a brief communication in TC soon.

Sincerely,
Ylva Sjöberg