D
Douglas R. Worsnop
Researcher at University of Helsinki
Publications - 435
Citations - 49744
Douglas R. Worsnop is an academic researcher from University of Helsinki. The author has contributed to research in topics: Aerosol & Mass spectrometry. The author has an hindex of 99, co-authored 408 publications receiving 41676 citations. Previous affiliations of Douglas R. Worsnop include Finnish Meteorological Institute & Beijing University of Chemical Technology.
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
Chemical and microphysical characterization of ambient aerosols with the aerodyne aerosol mass spectrometer
Manjula R. Canagaratna,John T. Jayne,Jose L. Jimenez,James Allan,M. R. Alfarra,Qi Zhang,Timothy B. Onasch,Frank Drewnick,Hugh Coe,Ann M. Middlebrook,A. E. Delia,Leah R. Williams,A. Trimborn,M. J. Northway,Peter F. DeCarlo,Charles E. Kolb,Paul Davidovits,Douglas R. Worsnop +17 more
TL;DR: A detailed discussion of the strengths and limitations of the AMS measurement approach is presented and how the measurements are used to characterize particle properties are reviewed to highlight the different applications of this instrument.
Journal ArticleDOI
Development of an Aerosol Mass Spectrometer for Size and Composition Analysis of Submicron Particles
John T. Jayne,Danna C. Leard,Xuefeng Zhang,P. Davidovits,Kenneth A. Smith,Charles E. Kolb,Douglas R. Worsnop +6 more
TL;DR: In this article, the authors describe an aerosol mass spectrometer (AMS) which has been developed in response to these aerosol sampling needs and demonstrate quantitative mea surement capability for a laboratory-generated pure component NH4 NO3 aerosol.
Journal ArticleDOI
A large source of low-volatility secondary organic aerosol
Mikael Ehn,Joel A. Thornton,Einhard Kleist,Mikko Sipilä,Heikki Junninen,Iida Pullinen,Monika Springer,Florian Rubach,Ralf Tillmann,Ben H. Lee,Felipe D. Lopez-Hilfiker,S. Andres,Ismail-Hakki Acir,Matti P. Rissanen,Tuija Jokinen,Siegfried Schobesberger,Juha Kangasluoma,Jenni Kontkanen,Tuomo Nieminen,Theo Kurtén,Lasse B. Nielsen,Solvejg Jørgensen,Henrik G. Kjaergaard,Manjula R. Canagaratna,Miikka Dal Maso,Torsten Berndt,Tuukka Petäjä,Andreas Wahner,Veli-Matti Kerminen,Markku Kulmala,Douglas R. Worsnop,Juergen Wildt,Thomas F. Mentel +32 more
TL;DR: It is found that a direct pathway leads from several biogenic VOCs, such as monoterpenes, to the formation of large amounts of extremely low-volatility vapours, helping to explain the discrepancy between the observed atmospheric burden of secondary organic aerosol and that reported by many model studies.
Journal ArticleDOI
Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation
Jasper Kirkby,Joachim Curtius,Joao Almeida,Joao Almeida,Eimear M. Dunne,Jonathan Duplissy,Jonathan Duplissy,Jonathan Duplissy,Sebastian Ehrhart,Alessandro Franchin,Stephanie Gagne,Stephanie Gagne,Luisa Ickes,Andreas Kürten,Agnieszka Kupc,A. Metzger,Francesco Riccobono,Linda Rondo,Siegfried Schobesberger,Georgios Tsagkogeorgas,Daniela Wimmer,António Amorim,F. Bianchi,F. Bianchi,Martin Breitenlechner,A. David,Josef Dommen,Andrew J. Downard,Mikael Ehn,Richard C. Flagan,S. Haider,Armin Hansel,Daniel Hauser,Werner Jud,Heikki Junninen,Fabian Kreissl,Alexander N. Kvashin,Ari Laaksonen,Katrianne Lehtipalo,Jorge Lima,Edward R. Lovejoy,Vladimir Makhmutov,Serge Mathot,Jyri Mikkilä,Pierre Minginette,S. Mogo,Tuomo Nieminen,Antti Onnela,Paulo J. Pereira,Tuukka Petäjä,R. Schnitzhofer,John H. Seinfeld,Mikko Sipilä,Mikko Sipilä,Yuri Stozhkov,Frank Stratmann,António Tomé,Joonas Vanhanen,Yrjö Viisanen,Aron Vrtala,Paul E. Wagner,Hansueli Walther,Ernest Weingartner,Heike Wex,Paul M. Winkler,Kenneth S. Carslaw,Douglas R. Worsnop,Urs Baltensperger,Markku Kulmala +68 more
TL;DR: First results from the CLOUD experiment at CERN are presented, finding that atmospherically relevant ammonia mixing ratios of 100 parts per trillion by volume, or less, increase the nucleation rate of sulphuric acid particles more than 100–1,000-fold and ion-induced binary nucleation of H2SO4–H2O can occur in the mid-troposphere but is negligible in the boundary layer.