Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter

Wu, Xi; Li, Pei-Feng; Zhang, Hong-Hai; Zhu, Mao-Xu; Liu, Chun-Ying; Yang, Gui-Peng

doi:https://doi.org/10.5194/bg-17-1991-2020

Articles | Volume 17, issue 7

https://doi.org/10.5194/bg-17-1991-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-17-1991-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 17, issue 7

Research article

|

15 Apr 2020

Research article |

| 15 Apr 2020

Acrylic acid and related dimethylated sulfur compounds in the Bohai and Yellow seas during summer and winter

Xi Wu, Pei-Feng Li, Hong-Hai Zhang, Mao-Xu Zhu, Chun-Ying Liu, and Gui-Peng Yang

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Final revised paper (published on 15 Apr 2020)
Preprint (discussion started on 28 May 2019)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review of BG-2019-172', Anonymous Referee #1, 04 Jul 2019
- AC1: 'Response to the reviewer', Chun-ying Liu, 11 Jul 2019
RC2: 'Review of BG-2019-172', Anonymous Referee #2, 14 Aug 2019
- AC2: 'Response to the reviewer 2', Chun-ying Liu, 03 Sep 2019

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Reconsider after major revisions (02 Oct 2019) by Minhan Dai

AR by Chun-ying Liu on behalf of the Authors (05 Nov 2019) Author's response Manuscript

ED: Referee Nomination & Report Request started (16 Nov 2019) by Minhan Dai

RR by Anonymous Referee #1 (28 Nov 2019)

Suggestions for revision or reasons for rejection

The revised manuscript is an improvement. The authors took the comments seriously and tried to revise as recommended. However, there are still a few problems (see specific comments below). Also, the English needs to be proofed, as there are still many mistakes.
Specific comments
Response, page 8; Manuscript, lines 206, 292, and Table 2 - I am a bit confused about the temperature and salinity correlations. The other reviewer also expressed concern here and the revision does not seem to answer the question. If AAd has a terrestrial (riverine source) why is there no anticorrelation between salinity and AA. Why is the anticorrelation always with DMS/P?
Line 41 – I think is not clear why the authors only talk about low producers of DMSP. They should give examples of both high and low producers.
Lines 58-61 – I assume this is not a comprehensive compilation of AA studies, correct? Why are only these presented? I assume it is because of the region. However, the authors state that the biogeochemistry of AA has received little attention, which I assume is more global in scope. Are there other studies that should be referenced here?
Line 255 - What is meant by rational and what is the meaning of the whole sentence?
Line 258 - Why say assuming first order when the authors measured this themselves? It is not necessary to assume, but it should be stated that there is evidence for first order kinetics.
Lines 287-291 - Did anyone test these storage effects?
Lines 332-340 - What do the correlations presented in this paragraph mean? There is no real discussion of these.
Line 424 – Is it reasonable to assume steady state here? Please state why.
Lines 431-432 – What is meant by coincided and the whole sentence?
Line 443 – Why should anthroprogenic sources of AAd decrease in winter? Or is the decrease from summer to winter dominated by the natural source?

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ED: Publish subject to technical corrections (11 Mar 2020) by Minhan Dai

AR by Chun-ying Liu on behalf of the Authors (18 Mar 2020) Author's response Manuscript

Short summary

Acrylic acid (AA) exhibited obvious spatial and temporal variations in the Bohai and Yellow seas. Strong biological production and abundant terrestrial inputs led to high AA in summer. Extremely high AA in sediments might result from the cleavage of intracellular DMSP and reduce bacterial metabolism. Degradation experiments of AA and DMSP proved other sources of AA and microbial consumption to be the key removal source. This study provided insightful information on the sulfur cycle these seas.