P
Paul I. Williams
Researcher at University of Manchester
Publications - 129
Citations - 13435
Paul I. Williams is an academic researcher from University of Manchester. The author has contributed to research in topics: Aerosol & Particulates. The author has an hindex of 48, co-authored 129 publications receiving 11858 citations. Previous affiliations of Paul I. Williams include University of East Anglia & Manchester Metropolitan University.
Papers
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Journal ArticleDOI
Evolution of Organic Aerosols in the Atmosphere
Jose L. Jimenez,Manjula R. Canagaratna,Neil M. Donahue,André S. H. Prévôt,Qi Zhang,Jesse H. Kroll,Peter F. DeCarlo,James Allan,Hugh Coe,Nga L. Ng,Allison C. Aiken,Kenneth S. Docherty,Ingrid M. Ulbrich,Andrew P. Grieshop,Allen L. Robinson,Jonathan Duplissy,Jared D. Smith,Kevin R. Wilson,V. A. Lanz,Christoph Hueglin,Yele Sun,Yele Sun,Jian Tian,Ari Laaksonen,Tomi Raatikainen,Tomi Raatikainen,J. Rautiainen,Petri Vaattovaara,Mikael Ehn,Markku Kulmala,Markku Kulmala,Jason Tomlinson,Don R. Collins,Michael J. Cubison,Edward J. Dunlea,J. A. Huffman,Timothy B. Onasch,M. R. Alfarra,Paul I. Williams,Keith Bower,Yutaka Kondo,Johannes Schneider,Frank Drewnick,Stephan Borrmann,S. Weimer,Kenneth L. Demerjian,D. Salcedo,L. Cottrell,Robert J. Griffin,Akinori Takami,Takao Miyoshi,Shiro Hatakeyama,Akio Shimono,J. Y. Sun,Y. M. Zhang,Katja Dzepina,Joel R. Kimmel,Donna Sueper,J. T. Jayne,Scott C. Herndon,A. Trimborn,Leah R. Williams,Ezra C. Wood,Ann M. Middlebrook,Charles E. Kolb,Urs Baltensperger,Douglas R. Worsnop +66 more
TL;DR: A unifying model framework describing the atmospheric evolution of OA that is constrained by high–time-resolution measurements of its composition, volatility, and oxidation state is presented, which can serve as a basis for improving parameterizations in regional and global models.
Journal ArticleDOI
Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically-influenced Northern Hemisphere midlatitudes
Qi Zhang,Jose L. Jimenez,Manjula R. Canagaratna,James Allan,Hugh Coe,Ingrid M. Ulbrich,M. R. Alfarra,Akinori Takami,Ann M. Middlebrook,Yele Sun,Katja Dzepina,Edward J. Dunlea,Kenneth S. Docherty,Peter F. DeCarlo,D. Salcedo,Timothy B. Onasch,J. T. Jayne,Takao Miyoshi,A. Shimono,Shiro Hatakeyama,Nobuyuki Takegawa,Yutaka Kondo,Johannes Schneider,Frank Drewnick,Stephan Borrmann,Silke Weimer,Kenneth L. Demerjian,Paul I. Williams,Keith Bower,Roya Bahreini,Roya Bahreini,L. Cottrell,Robert J. Griffin,J. Rautiainen,J. Y. Sun,Yaping Zhang,D. R. Worsnop +36 more
TL;DR: In this article, organic aerosol data acquired by the AMS in 37 field campaigns were deconvolved into hydrocarbon-like OA (HOA) and several types of oxygenated OA components.
Journal ArticleDOI
Mobility particle size spectrometers: harmonization of technical standards and data structure to facilitate high quality long-term observations of atmospheric particle number size distributions
Alfred Wiedensohler,Wolfram Birmili,Andreas Nowak,A. Sonntag,Kay Weinhold,Maik Merkel,Birgit Wehner,Thomas Tuch,Sascha Pfeifer,Markus Fiebig,A. M. Fjäraa,Eija Asmi,Karine Sellegri,R. Depuy,H. Venzac,P. Villani,Paolo Laj,Pasi Aalto,John A. Ogren,Erik Swietlicki,Paul I. Williams,Pontus Roldin,Paul Quincey,Christoph Hüglin,R. Fierz-Schmidhauser,Martin Gysel,Ernest Weingartner,Francesco Riccobono,Sebastiao Martins Dos Santos,C. Grüning,K.H. Faloon,David C. S. Beddows,Roy M. Harrison,Ciaran Monahan,S. G. Jennings,Colin D. O'Dowd,A. Marinoni,Hans-Georg Horn,L. Keck,Jingkun Jiang,Jacob H. Scheckman,Peter H. McMurry,Zhaoze Deng,Chunsheng Zhao,M. Moerman,Bas Henzing,G. de Leeuw,G. de Leeuw,G. Löschau,Susanne Bastian +49 more
TL;DR: In this article, the authors compared commercial and custom-made inversion routines to calculate the particle number size distributions from the measured electrical mobility distribution, and concluded that the consistency of these reference instruments to the total particle number concentration was less than 5%.
Journal ArticleDOI
Quantitative sampling using an Aerodyne aerosol mass spectrometer 1. Techniques of data interpretation and error analysis
James Allan,Jose L. Jimenez,Jose L. Jimenez,Paul I. Williams,M. Rami Alfarra,Keith Bower,John T. Jayne,Hugh Coe,Douglas R. Worsnop +8 more
TL;DR: In this paper, the authors used the quadrupole mass spectrometer (AMS) during the mass spectrum (MS) mode of operation to estimate the chemical composition and size of volatile and semivolatile fine airborne particulate matter.
Journal ArticleDOI
Chase Studies of Particulate Emissions from in-use New York City Vehicles
Manjula R. Canagaratna,John T. Jayne,David A. Ghertner,Scott C. Herndon,Q. Shi,Jose L. Jimenez,Philip J. Silva,Paul I. Williams,Thomas Lanni,Frank Drewnick,Kenneth L. Demerjian,Charles E. Kolb,Douglas R. Worsnop +12 more
TL;DR: In this article, the authors used an Aerodyne aerosol mass spectrometer (AMS) to provide size-resolved and chemically resolved characterization of the nonrefractory portion of the emitted PM; refractory materials such as elemental carbon were not measured in this study.