Influence of aerosols and surface reflectance on satellite NO2 retrieval: seasonal and spatial characteristics and implications for NOx emission constraints

Lin, J.-T.; Liu, M.-Y.; Xin, J.-Y.; Boersma, K. F.; Spurr, R.; Martin, R.; Zhang, Q.

doi:https://doi.org/10.5194/acp-15-11217-2015

Articles | Volume 15, issue 19

https://doi.org/10.5194/acp-15-11217-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

East Asia emissions assessment (EA2)

https://doi.org/10.5194/acp-15-11217-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 19

Research article

|

09 Oct 2015

Research article |

| 09 Oct 2015

Influence of aerosols and surface reflectance on satellite NO₂ retrieval: seasonal and spatial characteristics and implications for NO_x emission constraints

J.-T. Lin, M.-Y. Liu, J.-Y. Xin, K. F. Boersma, R. Spurr, R. Martin, and Q. Zhang

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Final revised paper (published on 09 Oct 2015)
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Preprint (discussion started on 29 Apr 2015)
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Interactive discussion

Status: closed

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

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- Supplement

SC C2517: 'Comment', Klaus Schaefer, 13 May 2015
- AC C5594: 'reply to Dr. Schaefer’s comments', Jintai Lin, 04 Aug 2015
RC C3355: 'Review comments', Anonymous Referee #1, 08 Jun 2015
- AC C5596: 'reply Reviewer 1's comment', Jintai Lin, 04 Aug 2015
RC C3824: 'Reviewer Comments', Anonymous Referee #2, 19 Jun 2015
- AC C5601: 'reply Reviewer 2's comment', Jintai Lin, 04 Aug 2015

Peer-review completion

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

AR by Jintai Lin on behalf of the Authors (04 Aug 2015) Author's response Manuscript

ED: Publish as is (22 Sep 2015) by Gregory Carmichael

AR by Jintai Lin on behalf of the Authors (23 Sep 2015)

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Short summary

We conduct an improved OMI-based retrieval of tropospheric NO2 VCDs (POMINO) over China by explicitly accounting for aerosol optical effects and surface reflectance anisotropy. Compared to the traditional implicit aerosol treatment, an explicit treatment greatly lowers NO2 VCDs and subsequently estimated NOx emissions over eastern China, but with large spatiotemporal dependence. An explicit treatment also better captures high-pollution days. Effects of surface reflectance treatments are smaller.