J
Junhua Zhang
Researcher at Environment Canada
Publications - 82
Citations - 2640
Junhua Zhang is an academic researcher from Environment Canada. The author has contributed to research in topics: Air quality index & Aerosol. The author has an hindex of 26, co-authored 80 publications receiving 2263 citations.
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Journal ArticleDOI
Evaluation of operational on-line-coupled regional air quality models over Europe and North America in the context of AQMEII phase 2. Part I: Ozone
Ulas Im,Roberto Bianconi,Efisio Solazzo,Ioannis Kioutsioukis,Alba Badia,Alessandra Balzarini,Rocío Baró,Roberto Bellasio,Dominik Brunner,Charles Chemel,Gabriele Curci,Johannes Flemming,Renate Forkel,Lea Giordano,Pedro Jiménez-Guerrero,Marcus Hirtl,Alma Hodzic,Luka Honzak,Oriol Jorba,Christoph Knote,Jeroen Kuenen,Paul A. Makar,Astrid Manders-Groot,Lucy Neal,Juan L. Pérez,Guido Pirovano,George Pouliot,Roberto San José,Nicholas Savage,W. Schröder,Ranjeet S. Sokhi,Dimiter Syrakov,Alfreida Torian,Paolo Tuccella,Johannes Werhahn,Ralf Wolke,Khairunnisa Yahya,Rahela Zabkar,Yang Zhang,Junhua Zhang,Christian Hogrefe,Stefano Galmarini +41 more
TL;DR: The second phase of the Air Quality Model Evaluation International Initiative (AQMEII) brought together sixteen modeling groups from Europe and North America, running eight operational online-coupled air quality models on common emissions and boundary conditions as mentioned in this paper.
Journal ArticleDOI
Operational model evaluation for particulate matter in Europe and North America in the context of AQMEII
Efisio Solazzo,Roberto Bianconi,Guido Pirovano,Volker Matthias,Robert Vautard,Michael D. Moran,K. Wyat Appel,Bertrand Bessagnet,Jørgen Brandt,Jesper H. Christensen,Charles Chemel,Isabelle Coll,Joana Ferreira,Renate Forkel,Xavier Vazhappilly Francis,Georg Grell,P. Grossi,A. B. Hansen,Ana Isabel Miranda,Uarporn Nopmongcol,Marje Prank,Karine Sartelet,Martijn Schaap,Jeremy D. Silver,Ranjeet S. Sokhi,Julius Vira,Johannes Werhahn,Ralf Wolke,Greg Yarwood,Junhua Zhang,S. Trivikrama Rao,Stefano Galmarini +31 more
TL;DR: In this paper, the authors compare the results of ten state-of-the-science regional air quality (AQ) modeling systems for full-year simulations of 2006 in the context of AQMEII, whose main goals are model inter-comparison and evaluation.
Journal ArticleDOI
Model evaluation and ensemble modelling of surface-level ozone in Europe and North America in the context of AQMEII
Efisio Solazzo,Roberto Bianconi,Robert Vautard,K. Wyat Appel,Michael D. Moran,Christian Hogrefe,Bertrand Bessagnet,Jørgen Brandt,Jesper H. Christensen,Charles Chemel,Isabelle Coll,Hugo Denier van der Gon,Joana Ferreira,Renate Forkel,Xavier Vazhappilly Francis,George Grell,P. Grossi,A. B. Hansen,Amela Jeričević,Lukša Kraljević,Ana Isabel Miranda,Uarporn Nopmongcol,Guido Pirovano,Marje Prank,Angelo Riccio,Karine Sartelet,Martijn Schaap,Jeremy D. Silver,Ranjeet S. Sokhi,Julius Vira,Johannes Werhahn,Ralf Wolke,Greg Yarwood,Junhua Zhang,S. Trivikrama Rao,Stefano Galmarini +35 more
TL;DR: In this paper, the authors investigated the optimal ensemble size and quality of the members based on a clustering methodology to build a skilful ensemble based on model association and data clustering, which makes no use of priori knowledge of model skill.
Journal ArticleDOI
Characterization of a large biogenic secondary organic aerosol event from eastern Canadian forests
Jay G. Slowik,Craig Stroud,Jan W. Bottenheim,P. C. Brickell,Rachel Y.-W. Chang,John Liggio,Paul A. Makar,Randall V. Martin,Randall V. Martin,M. D. Moran,N. C. Shantz,N. C. Shantz,S. J. Sjostedt,A. van Donkelaar,A. Vlasenko,A. Vlasenko,H. A. Wiebe,A. G. Xia,Junhua Zhang,W. R. Leaitch,Jon Abbatt +20 more
TL;DR: In this paper, the authors used a regional chemical transport model to predict the event timing and accurately predict the aerosol loading, identifying the precursors as monoterpene emissions from the coniferous forest.
Journal ArticleDOI
Evaluation of operational online-coupled regional air quality models over Europe and North America in the context of AQMEII phase 2. Part II: Particulate matter
Ulas Im,Roberto Bianconi,Efisio Solazzo,Ioannis Kioutsioukis,Alba Badia,Alessandra Balzarini,Rocío Baró,Roberto Bellasio,Dominik Brunner,Charles Chemel,Gabriele Curci,Hugo Denier van der Gon,Johannes Flemming,Renate Forkel,Lea Giordano,Pedro Jiménez-Guerrero,Marcus Hirtl,Alma Hodzic,Luka Honzak,Oriol Jorba,Christoph Knote,Paul A. Makar,Astrid Manders-Groot,Lucy Neal,Juan L. Pérez,Guido Pirovano,George Pouliot,Roberto San José,Nicholas Savage,W. Schröder,Ranjeet S. Sokhi,Dimiter Syrakov,Alfreida Torian,Paolo Tuccella,Kai Wang,Johannes Werhahn,Ralf Wolke,Rahela Zabkar,Yang Zhang,Junhua Zhang,Christian Hogrefe,Stefano Galmarini +41 more
TL;DR: The second phase of the Air Quality Model Evaluation International Initiative (AQMEII) brought together seventeen modeling groups from Europe and North America, running eight operational online-coupled air quality models over both continents using common emissions and boundary conditions as discussed by the authors.