L
Leah R. Williams
Publications - 74
Citations - 10321
Leah R. Williams is an academic researcher. The author has contributed to research in topics: Aerosol & Particle. The author has an hindex of 33, co-authored 71 publications receiving 8821 citations.
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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
Elemental ratio measurements of organic compounds using aerosol mass spectrometry: characterization, improved calibration, and implications
Manjula R. Canagaratna,Jose L. Jimenez,Jesse H. Kroll,Qi Chen,Sean H. Kessler,Paola Massoli,L. Hildebrandt Ruiz,Edward C. Fortner,Leah R. Williams,Kevin R. Wilson,Jason D. Surratt,Neil M. Donahue,J. T. Jayne,D. R. Worsnop +13 more
TL;DR: Aiken et al. as mentioned in this paper used the Aerodyne high-resolution time-of-flight mass spectrometer (HR-ToF-AMS) to measure OA elemental composition.
Journal ArticleDOI
Soot Particle Aerosol Mass Spectrometer: Development, Validation, and Initial Application
Timothy B. Onasch,A. Trimborn,Edward C. Fortner,J. T. Jayne,Gregory L. Kok,Leah R. Williams,Paul Davidovits,D. R. Worsnop +7 more
TL;DR: The Soot Particle Aerosol Mass Spectrometer (SP-AMS) as discussed by the authors was developed to measure the chemical and physical properties of particles containing refractory black carbon (rBC).
Journal ArticleDOI
Transmission Efficiency of an Aerodynamic Focusing Lens System: Comparison of Model Calculations and Laboratory Measurements for the Aerodyne Aerosol Mass Spectrometer
Peter S. K. Liu,Rensheng Deng,Kenneth A. Smith,Leah R. Williams,John T. Jayne,Manjula R. Canagaratna,Kori Moore,Timothy B. Onasch,Douglas R. Worsnop,Terry Deshler +9 more
TL;DR: In this paper, the size-dependent particle transmission efficiency of the aerodynamic lens system used in the Aerodyne Aerosol Mass Spectrometer (AMS) was investigated with computational fluid dynamics calculations and experimental measurements.