TROPOMI/S5P total ozone column data: global ground-based validation and consistency with other satellite missions

Autor: Alkiviadis F. Bais, Pieter Valks, Maria-Elissavet Koukouli, Jian Xu, José Granville, Ariane Bazureau, Klaus-Peter Heue, Arno Keppens, Katerina Garane, Daan Hubert, Vitali Fioletov, Jean-Pierre Pommereau, Dimitrios Balis, Chris A. McLinden, Angelika Dehn, Jean-Christopher Lambert, Andrea Pazmino, Christophe Lerot, Claus Zehner, Diego Loyola, Alberto Redondas, Christos Zerefos, Florence Goutail, Debora Griffin, Fabian Romahn, Walter Zimmer, Michel Van Roozendael, Tijl Verhoelst
Přispěvatelé: Laboratory of Atmospheric Physics [Thessaloniki], Aristotle University of Thessaloniki, Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), DLR Institut für Methodik der Fernerkundung / DLR Remote Sensing Technology Institute (IMF), Deutsches Zentrum für Luft- und Raumfahrt [Oberpfaffenhofen-Wessling] (DLR), Environment and Climate Change Canada, TROPO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), European Space Research Institute (ESRIN), European Space Agency (ESA), STRATO - LATMOS, Air Quality Research Division [Toronto], Izaña Atmospheric Research Center (IARC), Agencia Estatal de Meteorología (AEMet), Research Centre for Atmospheric Physics and Climatology [Athens], Academy of Athens
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Atmospheric Measurement Techniques, Vol 12, Pp 5263-5287 (2019)
Atmospheric Measurement Techniques
Atmospheric Measurement Techniques, European Geosciences Union, 2019, 12 (10), pp.5263-5287. ⟨10.5194/amt-12-5263-2019⟩
ARCIMIS. Archivo Climatológico y Meteorológico Institucional (AEMET)
Agencia Estatal de Meteorología (AEMET)
ISSN: 1867-8548
1867-1381
Popis: In October 2017, the Sentinel-5 Precursor (S5P) mission was launched, carrying the TROPOspheric Monitoring Instrument (TROPOMI), which provides a daily global coverage at a spatial resolution as high as 7 km × 3.5 km and is expected to extend the European atmospheric composition record initiated with GOME/ERS-2 in 1995, enhancing our scientific knowledge of atmospheric processes with its unprecedented spatial resolution. Due to the ongoing need to understand and monitor the recovery of the ozone layer, as well as the evolution of tropospheric pollution, total ozone remains one of the leading species of interest during this mission. 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. Additionally, the TROPOMI OFFL and NRTI products are evaluated against already known spaceborne sensors, namely, the Ozone Mapping Profiler Suite, on board the Suomi National Polar-orbiting Partnership (OMPS/Suomi-NPP), NASA v2 TOCs, and the Global Ozone Monitoring Experiment 2 (GOME-2), on board the Metop-A (GOME-2/Metop-A) and Metop-B (GOME-2/Metop-B) satellites. This analysis shows a very good agreement for both TROPOMI products with well-established instruments, with the absolute differences in mean bias and mean standard deviation being below +0.7 % and 1 %, respectively. These results assure the scientific community of the good quality of the TROPOMI TOC products during its first year of operation and enhance the already prevalent expectation that TROPOMI/S5P will play a very significant role in the continuity of ozone monitoring from space.
Databáze: OpenAIRE
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