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TROPOMI/S5P total ozone column data: global ground-based validation and consistency with other satellite missions
Title: TROPOMI/S5P total ozone column data: global ground-based validation and consistency with other satellite missions
Authors: Garane, KaterinaKoukouli, Maria-ElissavetVerhoelst, T.Lerot, ChristopheHeue, Klaus-PeterFioletov, VitaliBalis, DimitrisBais, Alkiviadis F.Bazureau, ArianeDehn, AngelikaGoutail, FlorenceGranville, JoseGriffin, DeboraHubert, DaanKeppens, ArnoLambert, Jean-ChristopherLoyola, DiegoMcLinden, ChrisPazmino, AndreaPommereau, Jean-PierreRedondas, Alberto ORCID RESEARCHERID Autor AEMETRomahn, FabianValks, P.Roozendael, Michel VanXu, JianZehner, ClausZerefos, Christos S.Zimmer, Walter
Keywords: Ozone column; Brewer measurements; Tropospheric Monitoring Instrument
Issue Date: 2019
Publisher: European Geosciences Union
Citation: Atmospheric Measurement Techniques. 2019, 12(10), p. 5263–5287
Publisher version:
Abstract: In this work, the TROPOMI near real time (NRTI) and offline (OFFL) total ozone column (TOC) products are presented and compared to daily ground-based quality-assured Brewer and Dobson TOC measurements deposited in the World Ozone and Ultraviolet Radiation Data Centre (WOUDC). Additional comparisons to individual Brewer measurements from the Canadian Brewer Network and the European Brewer Network (Eubrewnet) are performed. Furthermore, twilight zenith-sky measurements obtained with ZSL-DOAS (Zenith Scattered Light Differential Optical Absorption Spectroscopy) instruments, which form part of the SAOZ network (Système d'Analyse par Observation Zénitale), are used for the validation. The quality of the TROPOMI TOC data is evaluated in terms of the influence of location, solar zenith angle, viewing angle, season, effective temperature, surface albedo and clouds. For this purpose, globally distributed ground-based measurements have been utilized as the background truth. The overall statistical analysis of the global comparison shows that the mean bias and the mean standard deviation of the percentage difference between TROPOMI and ground-based TOC is within 0 –1.5 % and 2.5 %–4.5 %, respectively. The mean bias that results from the comparisons is well within the S5P product requirements, while the mean standard deviation is very close to those limits, especially considering that the statistics shown here originate both from the satellite and the ground-based measurements.
Sponsorship : This research has been supported by the European Space Agency “Preparation and Operations of the Mission Performance Centre (MPC) for the Copernicus Sentinel-5 Precursor Satellite” (contract no. 4000117151/16/1-LG).
ISSN: 1867-1381
Appears in Collections:Artículos científicos 2019-2022

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