Articles | Volume 23, issue 2
Research article
24 Jan 2023
Research article |  | 24 Jan 2023

Nitrogen oxides in the free troposphere: implications for tropospheric oxidants and the interpretation of satellite NO2 measurements

Viral Shah, Daniel J. Jacob, Ruijun Dang, Lok N. Lamsal, Sarah A. Strode, Stephen D. Steenrod, K. Folkert Boersma, Sebastian D. Eastham, Thibaud M. Fritz, Chelsea Thompson, Jeff Peischl, Ilann Bourgeois, Ilana B. Pollack, Benjamin A. Nault, Ronald C. Cohen, Pedro Campuzano-Jost, Jose L. Jimenez, Simone T. Andersen, Lucy J. Carpenter, Tomás Sherwen, and Mat J. Evans


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2022-656', Anonymous Referee #1, 16 Aug 2022
  • RC2: 'Comment on egusphere-2022-656', Anonymous Referee #2, 31 Aug 2022
  • RC3: 'Comment on egusphere-2022-656', Anonymous Referee #3, 11 Sep 2022
  • AC1: 'Author response to reviewer comments', Viral Shah, 11 Oct 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
AR by Viral Shah on behalf of the Authors (11 Oct 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Referee Nomination & Report Request started (02 Nov 2022) by Hang Su
RR by Anonymous Referee #2 (18 Nov 2022)
ED: Publish subject to minor revisions (review by editor) (28 Nov 2022) by Hang Su
AR by Viral Shah on behalf of the Authors (08 Dec 2022)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (19 Dec 2022) by Hang Su
AR by Viral Shah on behalf of the Authors (20 Dec 2022)  Manuscript 
Short summary
NOx in the free troposphere (above 2 km) affects global tropospheric chemistry and the retrieval and interpretation of satellite NO2 measurements. We evaluate free tropospheric NOx in global atmospheric chemistry models and find that recycling NOx from its reservoirs over the oceans is faster than that simulated in the models, resulting in increases in simulated tropospheric ozone and OH. Over the U.S., free tropospheric NO2 contributes the majority of the tropospheric NO2 column in summer.
Final-revised paper