Tropospheric Ozone Assessment Report Phase II (TOAR-II) Community Special Issue (ACP/AMT/BG/GMD inter-journal SI)(ACP/AMT/BG/GMD inter-journal SI)
Tropospheric Ozone Assessment Report Phase II (TOAR-II) Community Special Issue (ACP/AMT/BG/GMD inter-journal SI)(ACP/AMT/BG/GMD inter-journal SI)
Editor(s): Owen R. Cooper, Martin G. Schultz, and Paul Stoy Special issue jointly organized between Atmospheric Chemistry and Physics, Atmospheric Measurement Techniques, Biogeosciences, and Geoscientific Model Development
The Tropospheric Ozone Assessment Report (TOAR-II) is an official activity of the International Global Atmospheric Chemistry Project (IGAC) (https://igacproject.org/activities/TOAR/TOAR-II). The goal of TOAR-II is to build on the success of TOAR-I (2014–2019) and produce an updated assessment of tropospheric ozone’s global distribution and trends from the surface to the tropopause. This effort will include an analysis of the impacts of ozone on human health, crop and ecosystem productivity, and climate. Original tropospheric ozone research conducted by the TOAR-II community may be submitted to one of six Copernicus journals (ACP/AMT/BG/GMD/ESSD/ASCMO), and the accepted papers will be linked through the TOAR-II Community Special Issue.

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16 Apr 2024
Measurement report: Long-term measurements of ozone concentrations in semi-natural African ecosystems
Hagninou Elagnon Venance Donnou, Aristide Barthélémy Akpo, Money Ossohou, Claire Delon, Véronique Yoboué, Dungall Laouali, Marie Ouafo-Leumbe, Pieter Gideon Van Zyl, Ousmane Ndiaye, Eric Gardrat, Maria Dias-Alves, and Corinne Galy-Lacaux
EGUsphere, https://doi.org/10.5194/egusphere-2024-284,https://doi.org/10.5194/egusphere-2024-284, 2024
Preprint under review for ACP (discussion: open, 0 comments)
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16 Apr 2024
Developing the DO3SE-crop model for Xiaoji, China
Pritha Pande, Sam Bland, Nathan Booth, Jo Cook, Zhaozhong Feng, and Lisa Emberson
EGUsphere, https://doi.org/10.5194/egusphere-2024-694,https://doi.org/10.5194/egusphere-2024-694, 2024
Preprint under review for BG (discussion: open, 0 comments)
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03 Apr 2024
MIXv2: a long-term mosaic emission inventory for Asia (2010–2017)
Meng Li, Junichi Kurokawa, Qiang Zhang, Jung-Hun Woo, Tazuko Morikawa, Satoru Chatani, Zifeng Lu, Yu Song, Guannan Geng, Hanwen Hu, Jinseok Kim, Owen R. Cooper, and Brian C. McDonald
Atmos. Chem. Phys., 24, 3925–3952, https://doi.org/10.5194/acp-24-3925-2024,https://doi.org/10.5194/acp-24-3925-2024, 2024
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02 Apr 2024
An improved Trajectory-mapped Ozonesonde dataset for the Stratosphere and Troposphere (TOST): update, validation and applications
Zhou Zang, Jane Liu, David Tarasick, Omid Moeini, Jianchun Bian, Jinqiang Zhang, Anne M. Thompson, Roeland Van Malderen, Herman G. J. Smit, Ryan M. Stauffer, Bryan J. Johnson, and Debra E. Kollonige
EGUsphere, https://doi.org/10.5194/egusphere-2024-800,https://doi.org/10.5194/egusphere-2024-800, 2024
Preprint under review for ACP (discussion: open, 0 comments)
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28 Mar 2024
Tropospheric ozone column dataset from OMPS-LP/OMPS-NM limb–nadir matching
Andrea Orfanoz-Cheuquelaf, Carlo Arosio, Alexei Rozanov, Mark Weber, Annette Ladstätter-Weißenmayer, John P. Burrows, Anne M. Thompson, Ryan M. Stauffer, and Debra E. Kollonige
Atmos. Meas. Tech., 17, 1791–1809, https://doi.org/10.5194/amt-17-1791-2024,https://doi.org/10.5194/amt-17-1791-2024, 2024
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22 Mar 2024
Quantifying the tropospheric ozone radiative effect and its temporal evolution in the satellite era
Richard J. Pope, Alexandru Rap, Matilda A. Pimlott, Brice Barret, Eric Le Flochmoen, Brian J. Kerridge, Richard Siddans, Barry G. Latter, Lucy J. Ventress, Anne Boynard, Christian Retscher, Wuhu Feng, Richard Rigby, Sandip S. Dhomse, Catherine Wespes, and Martyn P. Chipperfield
Atmos. Chem. Phys., 24, 3613–3626, https://doi.org/10.5194/acp-24-3613-2024,https://doi.org/10.5194/acp-24-3613-2024, 2024
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21 Mar 2024
Tropospheric Ozone Precursors: Global and Regional Distributions, Trends and Variability
Yasin Elshorbany, Jerald Ziemke, Sarah Strode, Hervé Petetin, Kazuyuki Miyazaki, Isabelle De Smedt, Kenneth Pickering, Rodrigo Seguel, Helen Worden, Tamara Emmerichs, Domenico Taraborrelli, Maria Cazorla, Suvarna Fadnavis, Rebecca Buchholz, Benjamin Gaubert, Néstor Rojas, Thiago Nogueira, Thérèse Salameh, and Min Huang
EGUsphere, https://doi.org/10.5194/egusphere-2024-720,https://doi.org/10.5194/egusphere-2024-720, 2024
Preprint under review for ACP (discussion: open, 1 comment)
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12 Mar 2024
Regional and sectoral contributions of NOx and reactive carbon emission sources to global trends in tropospheric ozone during the 2000–2018 period
Aditya Nalam, Aura Lupascu, Tabish Ansari, and Timothy Butler
EGUsphere, https://doi.org/10.5194/egusphere-2024-432,https://doi.org/10.5194/egusphere-2024-432, 2024
Preprint under review for ACP (discussion: open, 3 comments)
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23 Feb 2024
Improved CCD tropospheric ozone from S5P TROPOMI satellite data using local cloud fields
Swathi Maratt Satheesan, Kai-Uwe Eichmann, John P. Burrows, Mark Weber, Ryan Stauffer, Anne M. Thompson, and Debra Kollonige
EGUsphere, https://doi.org/10.5194/egusphere-2023-2825,https://doi.org/10.5194/egusphere-2023-2825, 2024
Preprint under review for AMT (discussion: final response, 3 comments)
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22 Feb 2024
Reactive nitrogen in and around the northeastern and Mid-Atlantic US: sources, sinks, and connections with ozone
Min Huang, Gregory R. Carmichael, James H. Crawford, Kevin W. Bowman, Isabelle De Smedt, Andreas Colliander, Michael H. Cosh, Sujay V. Kumar, Alex B. Guenther, Scott J. Janz, Ryan M. Stauffer, Anne M. Thompson, Niko M. Fedkin, Robert J. Swap, John D. Bolten, and Alicia T. Joseph
EGUsphere, https://doi.org/10.5194/egusphere-2024-484,https://doi.org/10.5194/egusphere-2024-484, 2024
Preprint under review for ACP (discussion: open, 1 comment)
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12 Feb 2024
The contribution of transport emissions to ozone mixing ratios and methane lifetime in 2015 and 2050 in the Shared Socioeconomic Pathways (SSPs)
Mariano Mertens, Sabine Brinkop, Phoebe Graf, Volker Grewe, Johannes Hendricks, Patrick Jöckel, Anna Lanteri, Sigrun Matthes, Vanessa S. Rieger, Mattia Righi, and Robin N. Thor
EGUsphere, https://doi.org/10.5194/egusphere-2024-324,https://doi.org/10.5194/egusphere-2024-324, 2024
Preprint under review for ACP (discussion: open, 4 comments)
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12 Feb 2024
Changes in South American Surface Ozone Trends: Exploring the Influences of Precursors and Extreme Events
Rodrigo J. Seguel, Lucas Castillo, Charlie Opazo, Néstor Y. Rojas, Thiago Nogueira, María Cazorla, Mario Gavidia-Calderón, Laura Gallardo, René Garreaud, Tomás Carrasco-Escaff, and Yasin Elshorbany
EGUsphere, https://doi.org/10.5194/egusphere-2024-328,https://doi.org/10.5194/egusphere-2024-328, 2024
Preprint under review for ACP (discussion: final response, 3 comments)
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06 Feb 2024
Performance evaluation of UKESM1 for surface ozone across the pan-tropics
Flossie Brown, Gerd Folberth, Stephen Sitch, Paulo Artaxo, Marijn Bauters, Pascal Boeckx, Alexander W. Cheesman, Matteo Detto, Ninong Komala, Luciana Rizzo, Nestor Rojas, Ines dos Santos Vieira, Steven Turnock, Hans Verbeeck, and Alfonso Zambrano
EGUsphere, https://doi.org/10.5194/egusphere-2023-2937,https://doi.org/10.5194/egusphere-2023-2937, 2024
Preprint under review for ACP (discussion: final response, 3 comments)
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22 Jan 2024
Tropical tropospheric ozone distribution and trends from in situ and satellite data
Audrey Gaudel, Ilann Bourgeois, Meng Li, Kai-Lan Chang, Jerald Ziemke, Bastien Sauvage, Ryan M. Stauffer, Anne M. Thompson, Debra E. Kollonige, Nadia Smith, Daan Hubert, Arno Keppens, Juan Cuesta, Klaus-Peter Heue, Pepijn Veefkind, Kenneth Aikin, Jeff Peischl, Chelsea R. Thompson, Thomas B. Ryerson, Gregory J. Frost, Brian C. McDonald, and Owen R. Cooper
EGUsphere, https://doi.org/10.5194/egusphere-2023-3095,https://doi.org/10.5194/egusphere-2023-3095, 2024
Preprint under review for ACP (discussion: open, 2 comments)
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15 Jan 2024
Seasonal, regional and vertical characteristics of high carbon monoxide plumes along with their associated ozone anomalies as seen by IAGOS between 2002 and 2019
Thibaut Lebourgeois, Bastien Sauvage, Pawel Wolff, Béatrice Josse, Virginie Marécal, Yasmine Bennouna, Romain Blot, Damien Boulanger, Hannah Clark, Jean-Marc Cousin, Philippe Nedelec, and Valérie Thouret
EGUsphere, https://doi.org/10.5194/egusphere-2023-2949,https://doi.org/10.5194/egusphere-2023-2949, 2024
Preprint under review for ACP (discussion: final response, 3 comments)
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11 Jan 2024
Technical note: Challenges of detecting free tropospheric ozone trends in a sparsely sampled environment
Kai-Lan Chang, Owen R. Cooper, Audrey Gaudel, Irina Petropavlovskikh, Peter Effertz, Gary Morris, and Brian C. McDonald
EGUsphere, https://doi.org/10.5194/egusphere-2023-2739,https://doi.org/10.5194/egusphere-2023-2739, 2024
Revised manuscript accepted for ACP (discussion: final response, 4 comments)
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04 Jan 2024
Investigation of satellite vertical sensitivity on long-term retrieved lower tropospheric ozone trends
Richard J. Pope, Fiona M. O'Connor, Mohit Dalvi, Brian J. Kerridge, Richard Siddans, Barry G. Latter, Brice Barret, Eric Le Flochmoen, Anne Boynard, Martyn P. Chipperfield, Wuhu Feng, Matilda A. Pimlott, Sandip S. Dhomse, Christian Retscher, Catherine Wespes, and Richard Rigby
EGUsphere, https://doi.org/10.5194/egusphere-2023-3109,https://doi.org/10.5194/egusphere-2023-3109, 2024
Preprint under review for ACP (discussion: final response, 3 comments)
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21 Dec 2023
Fingerprints of the COVID-19 economic downturn and recovery on ozone anomalies at high-elevation sites in North America and western Europe
Davide Putero, Paolo Cristofanelli, Kai-Lan Chang, Gaëlle Dufour, Gregory Beachley, Cédric Couret, Peter Effertz, Daniel A. Jaffe, Dagmar Kubistin, Jason Lynch, Irina Petropavlovskikh, Melissa Puchalski, Timothy Sharac, Barkley C. Sive, Martin Steinbacher, Carlos Torres, and Owen R. Cooper
Atmos. Chem. Phys., 23, 15693–15709, https://doi.org/10.5194/acp-23-15693-2023,https://doi.org/10.5194/acp-23-15693-2023, 2023
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05 Dec 2023
Investigation of spatial and temporal variability in lower tropospheric ozone from RAL Space UV–Vis satellite products
Richard J. Pope, Brian J. Kerridge, Richard Siddans, Barry G. Latter, Martyn P. Chipperfield, Wuhu Feng, Matilda A. Pimlott, Sandip S. Dhomse, Christian Retscher, and Richard Rigby
Atmos. Chem. Phys., 23, 14933–14947, https://doi.org/10.5194/acp-23-14933-2023,https://doi.org/10.5194/acp-23-14933-2023, 2023
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04 Dec 2023
Dynamical drivers of free-tropospheric ozone increases over equatorial Southeast Asia
Ryan M. Stauffer, Anne M. Thompson, Debra E. Kollonige, Ninong Komala, Habib Khirzin Al-Ghazali, Dian Yudha Risdianto, Ambun Dindang, Ahmad Fairudz bin Jamaluddin, Mohan Kumar Sammathuria, Norazura Binti Zakaria, Bryan J. Johnson, and Patrick D. Cullis
EGUsphere, https://doi.org/10.5194/egusphere-2023-2618,https://doi.org/10.5194/egusphere-2023-2618, 2023
Revised manuscript accepted for ACP (discussion: final response, 6 comments)
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20 Nov 2023
Intercomparison of long-term ground-based measurements of tropospheric and stratospheric ozone at Lauder, New Zealand (45S)
Robin Björklund, Corinne Vigouroux, Peter Effertz, Omaira Garcia, Alex Geddes, James Hannigan, Koji Miyagawa, Michael Kotkamp, Bavo Langerock, Gerald Nedoluha, Ivan Ortega, Irina Petropavlovskikh, Deniz Poyraz, Richard Querel, John Robinson, Hisako Shiona, Dan Smale, Penny Smale, Roeland Van Malderen, and Martine De Mazière
EGUsphere, https://doi.org/10.5194/egusphere-2023-2668,https://doi.org/10.5194/egusphere-2023-2668, 2023
Preprint under review for AMT (discussion: final response, 4 comments)
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