Modeling intercontinental transport of ozone in North America with CAMx for the Air Quality Model Evaluation International Initiative (AQMEII) Phase 3

Nopmongcol, Uarporn; Liu, Zhen; Stoeckenius, Till; Yarwood, Greg

doi:https://doi.org/10.5194/acp-17-9931-2017

Articles | Volume 17, issue 16

https://doi.org/10.5194/acp-17-9931-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Global and regional assessment of intercontinental transport...

https://doi.org/10.5194/acp-17-9931-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 16

Research article

|

24 Aug 2017

Research article |

| 24 Aug 2017

Modeling intercontinental transport of ozone in North America with CAMx for the Air Quality Model Evaluation International Initiative (AQMEII) Phase 3

Uarporn Nopmongcol, Zhen Liu, Till Stoeckenius, and Greg Yarwood

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Final revised paper (published on 24 Aug 2017)
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Preprint (discussion started on 15 Mar 2017)
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Interactive discussion

Status: closed

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

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RC1: 'Long-range ozone transport modeling', Anonymous Referee #1, 11 Apr 2017
- AC1: 'Response to Referee #1.', Uarporn Nopmongcol, 23 Jun 2017
RC2: 'Review #2', Anonymous Referee #2, 12 Apr 2017
- AC2: 'Response to Referee #2.', Uarporn Nopmongcol, 23 Jun 2017

Peer-review completion

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

AR by Uarporn Nopmongcol on behalf of the Authors (23 Jun 2017) Author's response Manuscript

ED: Publish as is (03 Jul 2017) by Frank Dentener

AR by Uarporn Nopmongcol on behalf of the Authors (21 Jul 2017)

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Short summary

The CAMx regional model was used to examine contribution of intercontinental transport over North America as part of AQMEII Phase III. Largest boundary condition (BC) contributions to ozone (O₃) are from the mid-troposphere. Lower emissions in Asia by 20 % causes a near-linear relationship between the BC O₃ changes and surface O₃ changes in the western US, but the changes are less than 1 ppb. Using inert tracers leads to high bias over 10 ppb compared to using chemically reactive tracers.