High-resolution (0.05°&thinsp; × &thinsp;0.05°) NO<sub><i>x</i></sub> emissions in the Yangtze River Delta inferred from OMI

Kong, Hao; Lin, Jintai; Zhang, Ruixiong; Liu, Mengyao; Weng, Hongjian; Ni, Ruijing; Chen, Lulu; Wang, Jingxu; Yan, Yingying; Zhang, Qiang

doi:https://doi.org/10.5194/acp-19-12835-2019

Articles | Volume 19, issue 20

https://doi.org/10.5194/acp-19-12835-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-19-12835-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 20

Research article

|

15 Oct 2019

Research article |

| 15 Oct 2019

High-resolution (0.05° × 0.05°) NO_x emissions in the Yangtze River Delta inferred from OMI

Hao Kong, Jintai Lin, Ruixiong Zhang, Mengyao Liu, Hongjian Weng, Ruijing Ni, Lulu Chen, Jingxu Wang, Yingying Yan, and Qiang Zhang

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Status: closed

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

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RC1: 'Comments to acp-2018-1275', Anonymous Referee #1, 17 Feb 2019
- AC2: 'Response to RC1', Hao Kong, 07 Aug 2019
RC2: 'Review of Kong et al.', Anonymous Referee #2, 18 Apr 2019
- AC1: 'Response to RC2', Hao Kong, 07 Aug 2019

Peer-review completion

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

AR by Hao Kong on behalf of the Authors (09 Aug 2019) Manuscript

ED: Referee Nomination & Report Request started (13 Aug 2019) by Jianping Huang

RR by Anonymous Referee #1 (23 Aug 2019)

RR by Anonymous Referee #2 (26 Aug 2019)

ED: Publish subject to minor revisions (review by editor) (27 Aug 2019) by Jianping Huang

Reviewer 1#
1.There are a few grammatical errors (e.g. Page 1, Line 16, to estimating), please find a native speaker to proofread the paper.
2.The quality of the figures by increasing both the resolution and the sizes of the figure legends need be enhanced.

Reviewer 2#
Since the previous review, many changes and additions have been made to the manuscript. This has improved the manuscript a lot. A few additions I consider not valuable enough for the main text and maybe can be moved to the supplementary material. Section 4.2 in which the emissions are compared with spatial proxies is rather superficial and not very quantitative. Not much can be concluded from it and I suggest to move this to the supplementary material. Section 5 is not an OSSE comparison, but more a test for internal consistency. Thus the naming should be changed and I suggest to move this also to the supplement.
The manuscript still contain many grammar errors , missing articles (ie. “the” and “a”) and the references have many mistakes. Below I mention several of them.
Page 3, Line 8: remove first reference to Zhao et al
Page 3, Line 10: change to demanding, and therefore difficult to be applied …
Page 5, Line 11 What are pixel parameters ?
Page 8, line 5 “estimate” =>” estimating”
Page 8, Line 20 “based on” => “by”
Page 9, Line 17: “become” => “because”
Page 10, Line 12: “as” => “ to”
Page 12, Line 6: “abovementioned” => “ above mentioned”
Page 17, Line 13: “based on the” => “ as can be concluded from “
Page 21, Line 8: The reference to Timmermans et al. seems not correct and redundant.
Page 24, Line 20: The use of a Google photo is not the equivalent to a validation with land use data. Either use a real land-use database or just remove the comparison to GoogleEarth from the manuscript.
Page 25, Line 22: I remain of the opinion that the programming language used in this study is not relevant to be mentioned in an ACP manuscript and should certainly not be mentioned in the concluding remarks.
I noticed mistakes or omissions in the references Boersma-2011, Ding-2017a,Elvidge-2013, Hersbach-2016, Yineger-1995, Liu-2017, Mahieu-2013, Mijling-2012, Sun-2018, Timmermans-2016
Figure 2: This is a rather textbook figure of a cost function and I suggest to remove it.
Figure 7: Images (c) and (e) have interpolated colors at the edges of the grid boxes.

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AR by Hao Kong on behalf of the Authors (30 Aug 2019) Author's response Manuscript

ED: Publish as is (03 Sep 2019) by Jianping Huang

AR by Hao Kong on behalf of the Authors (03 Sep 2019) Manuscript

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Short summary

We develop a computationally efficient space-based top-down method to inverting NO_x emissions in major urban areas at high resolution. The inversion method uses long-term OMI NO₂ data to enhance the horizontal resolution, and it accounts for the nonlinear effects of horizontal transport, chemical loss, and deposition on NO_x. The inversion results reveal fine-scale spatial information of emissions which is hardly captured by bottom-up inventories.

High-resolution (0.05° × 0.05°) NOx emissions in the Yangtze River Delta inferred from OMI

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Interactive discussion

Peer-review completion

High-resolution (0.05° × 0.05°) NO_x emissions in the Yangtze River Delta inferred from OMI