Preprints
https://doi.org/10.5194/essd-2022-315
https://doi.org/10.5194/essd-2022-315
04 Oct 2022
 | 04 Oct 2022
Status: a revised version of this preprint was accepted for the journal ESSD and is expected to appear here in due course.

Global Ozone Monitoring Experiment-2 (GOME-2) Daily and Monthly Level 3 Products of Atmospheric Trace Gas Columns

Ka Lok Chan, Pieter Valks, Klaus-Peter Heue, Ronny Lutz, Pascal Hedelt, Diego Loyola, Gaia Pinardi, Michel Van Roozendael, François Hendrick, Thomas Wagner, Vinod Kumar, Alkis Bais, Ankie Piters, Hitoshi Irie, Yugo Kanaya, Hisahiro Takashima, Yongjoo Choi, Kihong Park, Jihyo Chong, Alexander Cede, Udo Frieß, Andreas Richter, Jianzhong Ma, Nuria Benavent, Robert Holla, Oleg Postylyakov, Claudia Rivera Cárdenas, and Mark Wenig

Abstract. We introduce the new GOME-2 daily and monthly level 3 product of total column ozone (O3), total and tropospheric column nitrogen dioxide (NO2), total column water vapour, total column bromine oxide (BrO), total column formaldehyde (HCHO) and total column sulphur dioxide (SO2). The GOME-2 level 3 products are aimed to provide easily translatable and user-friendly data sets to the scientific community for scientific progress as well as satisfying public interest. The purpose of this paper is to present the theoretical basis as well as the verification and validation of the GOME-2 daily and monthly level 3 products.

The GOME-2 level 3 products are produced using the overlapping area weighting method. Details of the gridding algorithm are presented. The spatial resolution of the GOME-2 level 3 products is selected based on sensitivity study. The consistency of the resulting level 3 products among three GOME-2 sensors is investigated through time series of global averages, zonal averages, and bias. The accuracy of the products is validated by comparing to ground-based observations. The verification and validation results show that the GOME-2 level 3 products are consistent with the level 2 data. Small discrepancies are found among three GOME-2 sensors, which are mainly caused by the differences in instrument characteristic and level 2 processor. The comparison of GOME-2 level 3 products to ground-based observations in general shows very good agreement, indicating the products are consistent and fulfil the requirements to serve the scientific community and general public.

Ka Lok Chan et al.

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2022-315', Anonymous Referee #1, 04 Nov 2022
    • AC3: 'Reply on RC1', Ka Lok Chan, 08 Feb 2023
  • RC2: 'Comment on essd-2022-315', Anonymous Referee #2, 20 Nov 2022
    • AC2: 'Reply on RC2', Ka Lok Chan, 08 Feb 2023
  • RC3: 'Comment on essd-2022-315', Lawrence Flynn, 21 Nov 2022
    • AC1: 'Reply on RC3', Ka Lok Chan, 08 Feb 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2022-315', Anonymous Referee #1, 04 Nov 2022
    • AC3: 'Reply on RC1', Ka Lok Chan, 08 Feb 2023
  • RC2: 'Comment on essd-2022-315', Anonymous Referee #2, 20 Nov 2022
    • AC2: 'Reply on RC2', Ka Lok Chan, 08 Feb 2023
  • RC3: 'Comment on essd-2022-315', Lawrence Flynn, 21 Nov 2022
    • AC1: 'Reply on RC3', Ka Lok Chan, 08 Feb 2023

Ka Lok Chan et al.

Data sets

GOME-2 NO2, H2O, O3, SO2, HCHO and BrO Level 3 daily and monthly gridded products Ka Lok Chan and Pieter Valks ftp://acsaf.eoc.dlr.de/

Ka Lok Chan et al.

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Short summary
This paper is to present the theoretical basis as well as the verification and validation of the GOME-2 daily and monthly level 3 products.