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Tropospheric Ozone Assessment Report: Database and Metrics Data of Global Surface Ozone Observations

Martin G. Schultz 1 Sabine Schröder 1 Olga Lyapina 1 Owen Cooper 2 Ian Galbally 3 Irina Petropavlovskikh 4 Erika von Schneidemesser 5 Hiroshi Tanimoto 6 Yasin Elshorbany 7 Ma Naja 8 Rodrigo Seguel 9 Ute Dauert 10 Paul Eckhardt 11 Stefan Feigenspahn 10 Ma Fiebig 11 Anne-Gunn Hjellbrekke 11 You-Deog Hong 12 Peter Christian Kjeld 13 Hiroshi Koide 14 Gary Lear 15 David Tarasick 16 Mikio Ueno 14 Ma Wallasch 10 Darrel Baumgardner 17 Ming-Tung Chuang 18 Robert Gillett 3 Meehye Lee 19 Suzie Molloy 3 Raeesa Moolla 20 Tao Wang 21 Katrina Sharps 22 Jose A. Adame 23 Gérard Ancellet 24 Francesco Apadula 25 Paul Artaxo 26 Ma Barlasina 27 Ma Bogucka 28 Paolo Bonasoni 29 Limseok Chang 12 Aurélie Colomb 30 Emilio Cuevas 31 Ma Cupeiro 27 Anna Degorska 32 Aijun Ding 33 Ma Fröhlich 34 Ma Frolova 35 Harish Gadhavi 36 François Gheusi 37 Stefan Gilge 38 Ma Gonzalez 23 Valérie Gros 39, 40 Samera H. Hamad 41 Detlev Helmig 42 Diamantino Henriques 43 Ove Hermansen 44, 11 Robert Holla 45 Jacques Huber 42 Ulas Im 46 Daniel A. Jaffe 47 Ninong Komala 48 Dagmar Kubistin 49 Ka-Se Lam 21 Tuomas Laurila 50 Haeyoung Lee 51 Ilan Levy 52 Claudio Mazzoleni 53 Lynn Mazzoleni 53 Audra Mcclure-Begley 4 Maznorizan Mohamad 54 Marijana Murovic 55 M. Navarro-Comas 23 Florin Nicodim 56 David Parrish 4 Katie A. Read 57 Nick Reid 58 Ludwig Ries 45 Pallavi Saxena 59 James J. Schwab 60 Yvonne Scorgie 61 Irina Senik 62 Peter Simmonds 63 Vinayak Sinha 64 Andrey Skorokhod 62 Gerard Spain 65 Wolfgang Spangl 10 Ronald Spoor 66 Stephen R. Springston 67 Kelvyn Steer 68 Martin Steinbacher 69 Eka Suharguniyawan 70 Paul Torre 71 Thomas Trickl 72 Lin Weili 73 Rolf Weller 74 Xiaobin Xu 73 Likun Xue 75 Ma Zhiqiang 73
24 TROPO - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
40 CAE - Chimie Atmosphérique Expérimentale
LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] : DRF/LSCE
Abstract : In support of the first Tropospheric Ozone Assessment Report (TOAR) a relational database of global surface ozone observations has been developed and populated with hourly measurement data and enhanced metadata. A comprehensive suite of ozone data products including standard statistics, health and vegetation impact metrics, and trend information, are made available through a common data portal and a web interface. These data form the basis of the TOAR analyses focusing on human health, vegetation, and climate relevant ozone issues, which are part of this special feature. Cooperation among many data centers and individual researchers worldwide made it possible to build the world's largest collection of in-situ hourly surface ozone data covering the period from 1970 to 2015. By combining the data from almost 10,000 measurement sites around the world with global metadata information, new analyses of surface ozone have become possible, such as the first globally consistent characterisations of measurement sites as either urban or rural/remote. Exploitation of these global metadata allows for new insights into the global distribution, and seasonal and long-term changes of tropospheric ozone and they enable TOAR to perform the first, globally consistent analysis of present-day ozone concentrations and recent ozone changes with relevance to health, agriculture, and climate. Considerable effort was made to harmonize and synthesize data formats and metadata information from various networks and individual data submissions. Extensive quality control was applied to identify questionable and erroneous data, including changes in apparent instrument offsets or calibrations. Such data were excluded from TOAR data products. Limitations of a posteriori data quality assurance are discussed. As a result of the work presented here, global coverage of surface ozone data for scientific analysis has been significantly extended. Yet, large gaps remain in the surface observation network both in terms of regions without monitoring, and in terms of regions that have monitoring programs but no public access to the data archive. Therefore future improvements to the database will require not only improved data harmonization, but also expanded data sharing and increased monitoring in data-sparse regions.
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Martin G. Schultz, Sabine Schröder, Olga Lyapina, Owen Cooper, Ian Galbally, et al.. Tropospheric Ozone Assessment Report: Database and Metrics Data of Global Surface Ozone Observations. Elementa: Science of the Anthropocene, University of California Press, 2017, 5, pp.58. ⟨10.1525/elementa.244⟩. ⟨insu-01635158⟩

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