Accounting for the photochemical variation in stratospheric NO<sub>2</sub> in the SAGE III/ISS solar occultation retrieval

Dubé, Kimberlee; Bourassa, Adam; Zawada, Daniel; Degenstein, Douglas; Damadeo, Robert; Flittner, David; Randel, William

doi:https://doi.org/10.5194/amt-14-557-2021

Articles | Volume 14, issue 1

https://doi.org/10.5194/amt-14-557-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-14-557-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 14, issue 1

Research article

|

26 Jan 2021

Research article |

| 26 Jan 2021

Accounting for the photochemical variation in stratospheric NO₂ in the SAGE III/ISS solar occultation retrieval

Kimberlee Dubé, Adam Bourassa, Daniel Zawada, Douglas Degenstein, Robert Damadeo, David Flittner, and William Randel

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Final revised paper (published on 26 Jan 2021)
Preprint (discussion started on 21 Sep 2020)

Interactive discussion

Status: closed

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

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- Supplement

RC1: 'Review of "Accounting for the photochemical variation of stratospheric NO2 in the SAGE III/ISS solar occultation retrieval"', Anonymous Referee #2, 14 Oct 2020
- AC2: 'Response to Comments', Kimberlee Dubé, 26 Nov 2020
RC2: 'Comments on the manuscript by Dubé et al. on accounting for photochemical variation of NO2 in SAGE III solar occultations', Emmanuel Dekemper, 19 Oct 2020
- AC1: 'Response to Comments', Kimberlee Dubé, 26 Nov 2020

Peer-review completion

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

AR by Kimberlee Dubé on behalf of the Authors (26 Nov 2020) Author's response Manuscript

ED: Publish subject to minor revisions (review by editor) (09 Dec 2020) by Michel Van Roozendael

AR by Kimberlee Dubé on behalf of the Authors (10 Dec 2020) Author's response Author's tracked changes Manuscript

ED: Publish as is (11 Dec 2020) by Michel Van Roozendael

AR by Kimberlee Dubé on behalf of the Authors (11 Dec 2020)

Short summary

SAGE III/ISS measures profiles of NO₂; however the algorithm to convert raw measurements to NO₂ concentration neglects variations caused by changes in chemistry over the course of a day. We devised a procedure to account for these diurnal variations and assess their impact on NO₂ measurements from SAGE III/ISS. We find that the new NO₂ concentration is more than 10 % lower than NO₂ from the standard algorithm below 30 km, showing that this effect is important to consider at lower altitudes.

Accounting for the photochemical variation in stratospheric NO2 in the SAGE III/ISS solar occultation retrieval

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Interactive discussion

Peer-review completion

Accounting for the photochemical variation in stratospheric NO₂ in the SAGE III/ISS solar occultation retrieval