High-resolution modeling of gaseous methylamines over a polluted region in China: source-dependent emissions   and implications of spatial variations

Mao, Jingbo; Yu, Fangqun; Zhang, Yan; An, Jingyu; Wang, Lin; Zheng, Jun; Yao, Lei; Luo, Gan; Ma, Weichun; Yu, Qi; Huang, Cheng; Li, Li; Chen, Limin

doi:https://doi.org/10.5194/acp-18-7933-2018

Articles | Volume 18, issue 11

https://doi.org/10.5194/acp-18-7933-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-18-7933-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 18, issue 11

Research article

|

06 Jun 2018

Research article |

| 06 Jun 2018

High-resolution modeling of gaseous methylamines over a polluted region in China: source-dependent emissions and implications of spatial variations

Jingbo Mao, Fangqun Yu, Yan Zhang, Jingyu An, Lin Wang, Jun Zheng, Lei Yao, Gan Luo, Weichun Ma, Qi Yu, Cheng Huang, Li Li, and Limin Chen

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Final revised paper (published on 06 Jun 2018)
Preprint (discussion started on 02 Jan 2018)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'comments on "High resolution modeling of gaseous methylamines over a polluted region in China: Source-dependent emissions and implications to spatial variations "', Anonymous Referee #1, 27 Jan 2018
- AC1: 'Response to referee #1', Jingbo Mao, 14 Apr 2018
RC2: 'Review of "High resolution modeling of gaseous methylamines over a polluted region in China: Source-dependent emissions and implications to spatial variations"', Anonymous Referee #2, 05 Feb 2018
- AC2: 'Response to referee #2', Jingbo Mao, 14 Apr 2018

Peer-review completion

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

AR by Jingbo Mao on behalf of the Authors (14 Apr 2018) Author's response Manuscript

ED: Referee Nomination & Report Request started (21 Apr 2018) by Leiming Zhang

RR by Anonymous Referee #3 (23 Apr 2018)

RR by Anonymous Referee #2 (07 May 2018)

Suggestions for revision or reasons for rejection

In your Reply, you indicate that small differences in ratios do not affect the conclusions. In a scientific article you need to represent all data correctly, so that the reader has the proper information to replicate and/or base his/her future research on.

Some revisions are needed (page and line numbers refer to the authors response in the review system, not the public version):

Table 1 note in the caption that the numbers here are the peak values in Zhang et al. Fig. 6.

Table 2 add information for sensitivity runs (gamma)

Tables 4 and 5 have different numbers for Fudan site, please correct the numbers.

Table 4 caption should indicate which run it is.

P16L23 Change derived to actual method used, e.g. calculated using orthogonal distance regression. Please explain the rationale using only the peak values.

P17L22 Why OH only? Please add explanation.

P17L24 Besides gamma please explain how the uptake is calculated, gamma alone is not enough.

P18L1 add information for the uptake coefficient for sensitivity runs as well (as in Table 2).

P18L15-19 Please add information for the sensitivity runs with different gamma.

P21L23-P22L3 Add discussion how the NMB changes when you change the gamma.

P21L28 night times -> night time (remove s)

P21L29 Please refer to NMB or Fig to support the better agreement with obs.

P22L2 This indicates that the uptake coefficient could be different amines, which is a result in itself. Note it here and add to conclusions.

P22L8 'It is clear' is a bit vague; based on what? Please use rather something like: Figure shows.

P22L14 Please indicate the actual NMB for FR instead of 'under -90%'.

P25L25 Add a line explaining different uptake between amine types.

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ED: Publish subject to minor revisions (review by editor) (07 May 2018) by Leiming Zhang

AR by Jingbo Mao on behalf of the Authors (14 May 2018) Author's response Manuscript

ED: Publish as is (17 May 2018) by Leiming Zhang

AR by Jingbo Mao on behalf of the Authors (18 May 2018)

Short summary

A few pptv of gaseous amines have been observed to affect particle nucleation and growth, and it is necessary to understand the sources and concentrations of atmospheric amines. This study presents the source-dependent amines to ammonia emission ratios and simulates methylamines concentrations in a polluted region in China with WRF-Chem. The performance of simulations based on source-dependent ratios is much better than those based on fixed ratios that have been assumed in all previous studies.