Articles | Volume 15, issue 6
Research article
23 Mar 2022
Research article |  | 23 Mar 2022

A comparison of the impact of TROPOMI and OMI tropospheric NO2 on global chemical data assimilation

Takashi Sekiya, Kazuyuki Miyazaki, Henk Eskes, Kengo Sudo, Masayuki Takigawa, and Yugo Kanaya


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on amt-2021-400', Anonymous Referee #1, 04 Jan 2022
    • AC1: 'Reply on RC1', Takashi Sekiya, 01 Feb 2022
  • RC2: 'Comment on amt-2021-400', Anonymous Referee #2, 04 Jan 2022
    • AC2: 'Reply on RC2', Takashi Sekiya, 01 Feb 2022

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Takashi Sekiya on behalf of the Authors (01 Feb 2022)  Author's response    Author's tracked changes    Manuscript
ED: Publish as is (02 Feb 2022) by Helen Worden
Short summary
This study gives a systematic comparison of TROPOMI version 1.2 and OMI QA4ECV tropospheric NO2 column through global chemical data assimilation (DA) integration for April–May 2018. DA performance is controlled by measurement sensitivities, retrieval errors, and coverage. Due to reduced errors in TROPOMI, agreements against assimilated and independent observations were improved by TROPOMI DA compared to OMI DA. These results demonstrate that TROPOMI DA improves global analyses of NO2 and ozone.