Aerosol & Cloud Chemistry

The Center for Aerosol and Cloud Chemistry performs laboratory and field experiments to understand heterogeneous processes associated with aerosol and cloud particles in the atmosphere. This includes processes that directly determine the distribution of both size and chemical composition of aerosols, as well as gas-particle interactions that impact gas phase species. Extensive laboratory studies have investigated the fundamental kinetics and thermodynamics of gas/liquid interactions. Current programs are aimed at developing advanced field measurement techniques for sampling ambient atmospheric particles from ground based and airborne platforms. Measurement methodologies for both particle and gas phase species are based on mass spectrometric methods. CACC has established and maintains a network of collaborators within the US and internationally. Research and development activities are supported by government agencies, private companies and private sector research consortia.

Government sponsors include: the National Science Foundation, the National Aeronautics and Space Administration, the Department of Energy, the Environmental Protection Agency, and the Office of Naval Research.

Private sector sponsors include: the Electric Power Research Institute, the Coordinating Research Council, Air Products, Inc, the Alternative Fluorocarbon Environmental Acceptability Study and the Chemical Manufacturers Association.

Research & Development Areas

  • Cloud and Aerosol Chemistry and Physics
  • Aerosol Sampling - Chemical Composition and Size
  • Aerosol Mass Spectrometry
  • Chemical Ionization Mass Spectrometry
  • PM1 and PM2.5 Aerosol Monitoring
  • Urban and Regional Air Pollution
  • Soot Emission Characterization
  • Aerosol Nucleation and Growth
  • Gas-Particle Processing
  • Kinetic Modeling

Facilities

  • Atmospheric aerosol analyzers
  • Aerosol flow reactors
  • Flame soot sources
  • Chemical ionization mass spectrometers
  • Aerosol production/characterization
  • Particle number and size measurement
  • Black carbon mass measurement
  • Prototyping shop to support development and testing of new technologies

Personnel

Dr. Douglas R. Worsnop
Douglas R. Worsnop
Ph.D., Physical Chemistry, Harvard University

Dr. Worsnop is a leading expert in the chemistry and heterogeneous reactions of atmospheric aerosols. He has pioneered the development of laboratory and field measurement techniques for investigating chemical interactions between atmospheric trace gases and aerosols, including water droplets. His expertise extends to the mechanisms of the formation of polar stratospheric clouds, and to measurements of the chemical composition of atmospheric aerosols. Dr. Worsnop is a recipient of the 2004 Benjamin Y. H. Liu Award (American Association for Aerosol Research) for his achievements in atmospheric composition measurement with the Aerodyne mass spectrometer system (AMS).  He received the 2010 Yoram Kaufman (AGU Atmospheric Sciences) for Unselfish Cooperation in Research and is a Fellow of AAAS and AGU.

Dr. John T. Jayne
John T. Jayne
Ph.D., Physical Chemistry, Boston College

Dr Jayne is an expert in the measurement of aerosol particles.  He was a co-developer of the Aerodyne AMS. He has extensive experience with developing new technology for the AMS, including the design, construction and evaluation phases for new instrumentation.  He was integrally involved in the development of the Aerodyne mobile laboratory and has participated in numerous field experiments. Dr. Jayne is a recipient of the 2004 Benjamin Y. H. Liu Award (American Association for Aerosol Research) for his achievements in atmospheric composition measurement with the Aerodyne mass spectrometer system (AMS).Dr. Jayne is Vice President, Instrument Systems Development and Production, and Co-Director, Center for Aerosol and Cloud Chemistry.

Dr. Leah Williams, Center for Aerosol and Cloud Chemistry
Leah R. Williams
Ph.D., Physical Chemistry, Massachusetts Institute of Technology

Dr. Williams' research interests center on the atmospheric chemistry of aerosol particles. She is involved in the development of the Aerodyne AMS to allow for the improved detection and quantification of particle-phase organic compounds.  She has extensive experience in the laboratory measurement of heterogeneous reaction rates on surfaces representative of atmospheric particulate matter.

Dr. Manjula Canagaratna, Center for Aerosol and Cloud Chemistry
Manjula R. Canagaratna
Ph.D., Physical Chemistry, University of Minnesota

Dr. Canagaratna’s work focuses on the development and application of Aerodyne's AMS. In addition to the development of control and analysis software for the AMS, she has participated in many field deployments of the AMS. Dr. Canagaratna's current work deals with the development and application of advanced methods for analysis of AMS spectra with the particular focus of obtaining improved speciation of organic aerosol species.

Wade Robinson, Center for Aerosol and Cloud Chemistry
Wade A. Robinson
B.Sc., Physics/Optics, University of Lowell

Mr. Robinson is an Instrumentation Engineer.  His background is in industrial CO2, and YAG ring laser characterization and development.  He has experience with physics research lab design, maintenance and safety encompassing physical vapor deposition (PVD), low temperature physics  (dilution refrigerators), laser light scattering, video microscopy, milli-degree thermal management, and helium recovery and liquefaction systems.  His main focus at Aerodyne is the construction of the Aerosol Mass Spectrometer system.

Dr. Tim Onasch, Center for Aerosol and Cloud Chemistry
Timothy B. Onasch
Ph.D, Physical Chemistry, University of Colorado

Dr. Onasch's research interests include atmospheric chemistry, particulate phase thermodynamics, physical properties of nanoparticles, optical detection and characterization of aerosol particles, and infrared spectroscopy. Currently he is working on characterizing the organic content of atmospheric particles using aerosol mass spectrometry.

Donna Sueper, Center for Aerosol and Cloud Chemistry
Donna T. Sueper
B.S, Briar Cliff University

Ms. Sueper is a Software Engineer. She coordinates, maintains, and provides support for the Squirrel program, a tool built in Igor to analyze Time of Flight Aerosol Mass Spectrometry (ToF-AMS) data sets. She has over 15 years of experience developing software tools for atmospheric gas and particulate measurements.

Dr. Joel Kimmel, Center for Aerosol and Cloud Chemistry
Joel Kimmel
Ph.D., Physical Chemistry, Stanford University

.Dr. Kimmel is interested in novel implementations of mass spectrometry for atmospheric analysis.  He has contributed extensively to the design and development of the ToF-AMS and the chemical ionization time-of-flight mass spectrometer (ToF-CIMS), writes and supports data acquisition software for both of these instruments, and has been involved in numerous field deployments of each.

Mr. Bill Brooks
William A. Brooks
B.S., Electronics Engineering, Wentworth Institute of Technology

Mr. Brooks is an Instrumentation Engineer. He has extensive experience with analog and digital electronics, and for his senior design project at Wentworth, he developed a fully automated robotic waitress. His main responsibilities at Aerodyne include the construction of the Aerosol Mass Spectrometer (AMS) system as well as the design of various electrical and mechanical systems.

Dr. Ed Fortner, Center for Aerosol and Cloud Chemistry
Edward C. Fortner
Ph.D., Atmospheric Science, Texas A & M University

Dr. Fortner's research interests center on the development of new soft ionization methods for use with the Aerodyne AMS.  His research experience includes the development of VOC quantification and speciation methodologies utilizing Proton Transfer Reaction Mass Spectrometry (PTR-MS) and the application of these methodologies in field studies.

Dr. Paola Massoli, Center for Aerosol and Cloud Chemistry
Paola Massoli
Ph.D., Environmental Sciences, Institute for Atmospheric Sciences and Climate (ISAC), Rome, Italy

Dr. Massoli’s research expertise and interests are in the areas of chemical and optical property characterization of tropospheric aerosols and their impact on air quality and climate change. Her research activities have focused on the microphysics of polar stratospheric clouds (PSCs) via custom-built LiDAR (LIght Detection And Ranging) systems, characterizing optical properties of troposphere aerosols via custom-built cavity ring down-based aerosol optical extinction monitors, nephelometers and photo acoustic-based absorption monitors.

Philip Croteau
Ph.D., Physical Chemistry, University of California, Berkeley

Dr. Croteau’s research interests include mass spectrometry of gas-phase and particulate composition of the atmosphere.  His current research focuses on development and application of a small aerosol mass spectrometer instrument designed for air quality monitoring. Dr Croteau’s current focus at ARI is leading the development of the Aerosol Chemical Speciation Monitor instrument.

Xavier Cabral, Center for Aerosol and Cloud Chemistry
Xavier Cabral
Wentworth Institute of Technology

Mr. Cabral is an instrument engineer who supports instrument construction and development activities in the CACC group. Mr. Cabral has a BS degree in Electrical Engineering Technology.

Dr. Harald Stark, Center for Aerosol and Cloud Chemistry
Harald Stark
PH.D., Physical Chemistry, Universität Göttingen

Dr. Stark is interested in research involving mass spectrometry. His experience with various field instruments such as cavity ringdown spectroscopy and solar spectroradiometry allows him to work on a wide array of subjects such as instrument development, software programming, and data analysis. Currently, he is responsible for developing igor code for the Aerodyne Research, Inc. Time-of-Flight Chemical Ionization Mass Spectrometer (TOF-CIMS).

Dr. Andrew Lambe
Andrew Lambe
Ph.D., Chemical Engineering, Carnegie Mellon University

Dr. Lambe has extensive experience with the chemical characterization of secondary organic aerosol in laboratory experiments and in field measurements. His current research focuses on understanding the formation of secondary organic aerosol through oxidation chamber experiments.

John Nowak
Ph.D., Atmospheric Sciences, Georgia Institute of Technology

Dr. Nowak is interested in understanding the chemical interactions between atmospheric trace gases and particles and their impact on air quality and climate.  His previous research efforts concentrated on the development and deployment of chemical ionization mass spectrometry (CIMS) instrumentation for airborne measurements of tropospheric trace gases, such as ammonia and nitric acid.  His current research focuses on further development and field deployment of the chemical ionization time-of-flight mass spectrometer (ToF-CIMS).  In addition, he supports trace gas measurements on the Aerodyne Mobile Laboratory.

Affiliated Personnel

Eben Cross, Massachusetts Institute of Technology
Paul Davidovits, Boston College
Katrin Fuhrer, Tofwerk
Marc Gonin, Tofwerk
Jesse Kroll, Massachusetts Institute of Technology
David Lewis, Connecticut College
Achim Trimborn, Aeromegt

Publications

Overview AMS Papers

Organic aerosol components observed in northern hemispheric datasets from aerosol mass spectrometry, N. L. Ng, M. R. Canagaratna, Q. Zhang, J. L. Jimenez, J. Tian, I. M. Ulbrich, J. H. Kroll, K. S. Docherty, P. S. Chhabra, R. Bahreini, S. M. Murphy, J. H. Seinfeld, L. Hildebrandt, N. M. Donahue, P. F. DeCarlo, V. A. Lanz, A. S. H. Prévôt, E. Dinar, Y. Rudich, D. R. Worsnop, Atmos. Chem. Phys., 10, 4625-4641, 2011.

Evolution of organic aerosols in the atmosphere, J. L. Jiménez, M. R. Canagaratna, N. M. Donahue, A. S. H. Prévôt, Q. Zhang, J. H. Kroll, P. F. DeCarlo, J. D. Allan, H. Coe, N. L. Ng, A. C. Aiken, K. S. Docherty, I. M. Ulbrich, A. P. Grieshop, A. L. Robinson, J. Duplissy, J. D. Smith, K. R. Wilson, V. A. Lanz, C. Hueglin, Y. L. Sun, J. Tian, A. Laaksonen, T. Raatikainen, J. Rautiainen, P. Vaattovaara, M. Ehn, M. Kulmala, J. M. Tomlinson, D. R. Collins, M. J. Cubison, E. J. Dunlea, J. A. Huffman, T. B. Onasch, M. R. Alfarra, P. I. Williams, K. Bower, Y. Kondo, J. Schneider, F. Drewnick, S. Borrmann, S. Weimer, K. Demerjian, D. Salcedo, L. Cottrell, R. Griffin, A. Takami, T. Miyoshi, S. Hatakeyama, A. Shimono, J. Y. Sun, Y. M. Zhang, K. Dzepina, J. R. Kimmel, D. Sueper, J. T. Jayne, S. C. Herndon, A. M. Trimborn, L. R. Williams, E. C. Wood, A. M. Middlebrook, C. E. Kolb, U. Baltensperger and D. R. Worsnop, Science 326, 1525-1529, 2009.

Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically—influenced Northern Hemisphere midlatitudes, Q. Zhang, J. L. Jiménez, M. R. Canagaratna, J. D. Allan, H. Coe, I. Ulbrich, M. R. Alfarra, A. Takami, A. M. Middlebrook, Y. L. Sun, K. Dzepina, E. Dunlea, K. Docherty, P. F. DeCarlo, D. Salcedo, T. Onasch, J. T. Jayne, T. Miyoshi, A. Shimono, S. Hatakeyama, N. Takegawa, Y. Kondo, J. Schneider, F. Drewnick, S. Borrmann, S. Weimer, K. Demerjian, P. Williams, K. Bower, R. Bahreini, L. Cottrell, R. J. Griffin, J. Rautiainen, J. Y. Sun, Y. M. Zhang and D. R. Worsnop, Geophys. Res. Lett. 34, L13801, doi:10.1029/2007GL029979, 2007.

Overview AMS Papers (continued)

Chemical and microphysical characterization of ambient aerosols with the Aerodyne Aerosol Mass Spectrometer, M. R. Canagaratna, J. T. Jayne, J. L. Jiménez, J. D. Allan, M. R. Alfarra, Q. Zhang, T. B. Onasch, F. Drewnick, H. Coe, A. Middlebrook, A. Delia, L. R. Williams, A. M. Trimborn, M. J. Northway, P. F. DeCarlo, C. E. Kolb, P. Davidovits and D. R. Worsnop, Mass Spectrometry Reviews 26, 185-222, 2007.

Organic aerosol components observed in northern hemispheric datasets from aerosol mass spectrometry, N. L. Ng, M. R. Canagaratna, Q. Zhang, J. L. Jimenez, J. Tian, I. M. Ulbrich, J. H. Kroll, K. S. Docherty, P. S. Chhabra, R. Bahreini, S. M. Murphy, J. H. Seinfeld, L. Hildebrandt, N. M. Donahue, P. F. Decarlo, V. A. Lanz, A. S. H. Prevot, E. Dinar, Y. Rudich and D. R. Worsnop, Atmos. Chem. Phys. 10, 4625-4641, 2010.

Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles, P. Massoli, A. T. Lambe, A. T. Ahern, L. R. Williams, M. Ehn, J. Mikkilä, M. R. Canagaratna, W. H. Brune, T. B. Onasch, J. T. Jayne, T. Petäjä, M. Kulmala, A. Laaksonen, C. E. Kolb, P. Davidovits and D. R. Worsnop, Geophys. Res. Lett. 37, doi:10.1029/2010GL045258, 2010.

Carbon oxidation state and the chemistry of atmospheric organic aerosol, J. H. Kroll, N. M. Donahue, J. L. Jimenez, S. H. Kessler, M. R. Canagaratna, K. R. Wilson, J. D. Smith, H. Bluhm, E. R. Mysak, C. E. Kolb and D. R. Worsnop, Nature Chemistry in press, 2010.

Experimental evidence for a solid state of biogenic secondary organic aerosol particles, A. Virtanen, J. Joutsensaari, T. Koop, J. Kannosto, P. Yli-Pirilä, J. Leskinen, J. M. Mäkelä, J. K. Holopainen, U. Pöschl, M. Kulmala, D. R. Worsnop and A. Laaksonen, Nature in press, 2010.

Dynamic evolution of vehicle exhaust particles in the atmosphere, M. R. Canagaratna, T. B. Onasch, E. C. Wood, S. C. Herndon, J. T. Jayne, E.S.Cross, R. C. Miake-Lye, C. E. Kolb and D. R. Worsnop, J. Air Waste Manag. Assoc. in press, 2010.

Chemical properties of aircraft engine particulate exhaust emissions, T. B. Onasch, J. T. Jayne, S. Herndon, D. R. Worsnop, R. C. Miake-Lye, I. P. Mortimer and B. E. Anderson, Journal of Propulsion and Power 25, 1121-1137, 2009.

Correlation of secondary organic aerosol with odd oxygen in Mexico City, S. C. Herndon, T. B. Onasch, E. C. Wood, J. H. Kroll, M. R. Canagaratna, J. T. Jayn, M. A. Zavala, W. B. Knighton, C. Mazzoleni, M. K. Dubey, I. M. Ulbrich, J. L. Jimenez, R. Seila, J. A. de Gouw, B. de Foy, J. Fast, L. T. Molina, C. E. Kolb and D. R. Worsnop, Geophys. Res. Lett. 35, doi:10.1029/2008GL034058, 2008.

Secondary organic aerosol formation from anthropogenic air pollution: Rapid and higher than expected, R. Volkamer, J. L. Jiménez, F. San Martini, K. Dzepina, Q. Zhang, D. Salcedo, L. T. Molina, D. R. Worsnop and M. J. Molina, Geophys. Res. Lett. 33, L17811, doi:10.1029/2006GL026899, 2006.

The budget of organic carbon in a polluted atmosphere: Results from the New England Air Quality Study in 2002, J. A. de Gouw, A. M. Middlebrook, C. Warneke, P. D. Goldan, W. C. Kuster, J. M. Roberts, F. C. Fehsenfeld, D. R. Worsnop, M. R. Canagaratna, A. A. P. Pszenny, W. C. Keene, M. Marchewka, S. B. Bertman and T. S. Bates, J. Geophys Res. 110, doi:10.1029/2004JD005623, 2005.

Instrument Description and Development

Sub-3 nm particle size and composition dependent response of a nano-CPC battery, J. Kangasluoma, C. Kuang, D. Wimmer, M. P. Rissanen, K. Lehtipalo, M. Ehn, D. R. Worsnop, J. Wang, M. Kulmala, T. Petäjä, Atmos. Meas. Tech. 7(3): 689-700, 2014.

The First Combined Thermal Desorption Aerosol Gas Chromatograph—Aerosol Mass Spectrometer (TAG-AMS), B. J. Williams, J. T. Jayne, A. T. Lambe, T. Hohaus, J. R. Kimmel, D. Sueper, W. Brooks, L. R. Williams, A. M. Trimborn, R. E. Martinez, P. L. Hayes, J. L. Jimenez, N. M. Kreisberg, S. V. Hering, D. R. Worton, A. H. Goldstein, D. R. Worsnop, Aerosol Sci.Tech., 48, 358-370, 2014.

Characterization of an aerodynamic lens for transmitting particles greater than 1 micrometer in diameter into the Aerodyne aerosol mass spectrometer
,  L. R. Williams, L. A. Gonzalez, J. Peck, D. Trimborn, J. McInnis, M. R. Farrar, K. D. Moore, J. T. Jayne, W. A. Robinson, D. K. Lewis, T. B. Onasch, M. R. Canagaratna, A. Trimborn, M. T. Timko, G. Magoon, R. Deng, D. Tang, E. de la Rosa Blanco, A. S. H. Prevot, K. A. Smith, D. R. Worsnop, Atmos. Meas. Tech., 6, 3271-3280, 2013.

Instrument Description (continued)

The ToF-ACSM: a portable aerosol chemical speciation monitor with TOFMS detection, R. Fröhlich, M. J. Cubison, J. G. Slowik, N. Bukowiecki,A. S. H. Prévôt, U. Baltensperger, J. Schneider, J. R. Kimmel, M. Gonin, U. Rohner, D. R. Worsnop, J. T. Jayne, Atmos. Meas. Tech, 6, 3225-3241, 2013.

chemical ionization high-resolution time-or-flight mass spectrometer coupled to a micro orifice volatilization impactor (MOVI-HRToF-CIMS) for analysis of gas and particle-phase organic species, R. L. N. Yatavelli, F. Lopez-Hilfiker, J. D. Wargo, J. R. Kimmel, M. J. Cubison, T. H. Bertram, J. L. Jimenez, M. Gonin, D. R. Worsnop, J. A. Thornton, Aerosol Sci. Tech., 46, 1313-1327, 2012.

Soot particle aerosol mass spectrometer: Development, validation, and initial application, T. B. Onasch, A. Trimborn, E. C. Fortner, J. T. Jayne, G. L. Kok, L. R. Williams, P. Davidovits, D. R. Worsnop, Aerosol Sci. Technol., 46, 804-817, 2012.

Real-time aerosol mass spectrometry with millisecond resolution, J. R. Kimmel, D. K. Farmer, M. J. Cubison, D. Sueper, C. Tanner, E. Nemitz, D. R. Worsnop, M. Gonin, J. L. Jimenez, Int. J. Mass Spectrom., 303, 15-26, 2011.

Evaluation of composition-dependent collection efficiencies for the Aerodyne Aerosol Mass Spectrometer using field data, A. M. Middlebrook, R. Bahreini, J. L. Jimenez, M. R. Canagaratna, Aerosol Sci. Tech., 46, 258-271, 2012.

A field-deployable, chemical ionization time-of-flight mass spectrometer, T. H. Bertram, J. R. Kimmel, T. A. Crisp, O. S. Ryder, R. L. N. Yatavelli, J. A. Thornton, M. J. Cubison, M. Gonin, D. R. Worsnop, Atmos. Meas. Tech., 4, 1471-1479, 2011.

Eddy covariance measurements with high-resolution time-of-flight aerosol mass spectrometry: a new approach to chemically-resolved aerosol fluxes, D. K. Farmer, J. R. Kimmel, G. Phillips, K. S. Docherty, D. R. Worsnop, D. Sueper, E. Nemitz, J. L. Jimenez, Atmos. Measurement Techniq. 4, 1275-1289, 2011.

An aerosol chemical speciation monitor (ACSM) for routine monitoring of the composition and mass concentrations of ambient aerosol, N. L. Ng, S. C. Herndon, A. Trimborn, M. R. Canagaratna, P. L. Croteau, T. B. Onasch, D. Sueper, D. R. Worsnop, Q. Zhang, Y. L. Sun, J. T. Jayne, Aerosol Sci. Technol. 45 780-794, 2011.

Thermal desorption metastable atom bombardment ionization aerosol mass spectrometer, C. B. Robinson, J. R. Kimmel, D. E. David, J. T. Jayne, A. Trimborn, D. R. Worsnop, J. L. Jimenez, Int. J. Mass Spectrom., 303, 164-172, 2011.

Development of an Aerosol Mass Spectrometer for Size and Composition Analysis of Submicron Particles, J. T. Jayne, D. C. Leard, X. Zhang, P. Davidovits, K. A. Smith, C. E. Kolb and D. R. Worsnop, Aerosol Sci. Technol. 33, 49-70, 2000.

A field-deployable high-resolution time-of-flight aerosol mass spectrometer, P. F. DeCarlo, J. R. Kimmel, A. Trimborn, M. J. Northway, J. T. Jayne, A. C. Aiken, M. Gonin, K. Fuhrer, T. Horvath, K. Docherty, D. R. Worsnop and J. L. Jiménez, Analytical Chemistry 78, 8281-8289, 2006.

A new time-of-flight aerosol mass spectrometer (ToF-AMS) – instrument description and first field deployment, F. Drewnick, S. S. Hings, P. F. DeCarlo, J. T. Jayne, M. Gonin, K. Fuhrer, S. Weimer, J. L. Jiménez, K. L. Demerjian, S. Borrmann and D. R. Worsnop, Aerosol Sci. Tech. 39, 637–658, 2005.

Transmission efficiency of an aerodynamic focusing lens system: Comparison of model calculations and laboratory measurements for the Aerodyne Aerosol Mass Spectrometer, P. S. K. Liu, R. Deng, K. A. Smith, J. T. Jayne, L. R. Williams, M. R. Canagaratna, K. Moore, T. B. Onasch, D. R. Worsnop and T. Deshler, Aerosol Sci. Technol. 41, 721-733, 2007.

Numerical characterization of particle beam collimation: Part II Integrated aerodynamic lens-nozzle system, X. Zhang, K. A. Smith, D. R. Worsnop, J. L. Jiménez, J. T. Jayne, C. E. Kolb, J. Morris and P. Davidovits, Aerosol Sci. Tech. 38, 619-638, 2004.

Particle morphology and density characterization by combined mobility and aerodynamic diameter measurements. Part 1: Theory, P. DeCarlo, J. G. Slowik, D. R. Worsnop, P. Davidovits and J. L. Jiménez, Aerosol Sci. Tech. 38, 1185–1205, doi: 10.1080/027868290903907, 2004.

Design, modeling, optimization, and experimental tests of a particle beam width probe for the Aerodyne Aerosol Mass Spectrometer, J. A. Huffman, J. T. Jayne, F. Drewnick, A. C. Aiken, T. Onasch, D. R. Worsnop and J. L. Jiménez, Aerosol Sci. Technol. 39, 1143-1163, 2005.

An eddy-covariance system for the measurement of surface/atmosphere exchange fluxes of submicron aerosol chemical species - first application above an urban area, E. Nemitz, J. L. Jimenez, J. A. Huffman, M. R. Canagaratna, D. R. Worsnop and A. B. Guenther, Atmos. Chem. Phys. Discuss. (in press), 2008.

Single particle characterization using a light scattering module coupled to a time-of-flight aerosol mass spectrometer, E. S. Cross, T. B. Onasch, M. Canagaratna, J. T. Jayne, J. Kimmel, X.-Y. Yu, M. L. Alexander, D. R. Worsnop and P. Davidovits, Atmospheric Chemistry and Physics 9, 7769-7793, 2009.

Laboratory and ambient particle density determinations using light scattering in conjunction with aerosol mass spectrometry, E. S. Cross, J. G. Slowik, P. Davidovits, J. D. Allan, D. R. Worsnop, J. T. Jayne, D. K. Lewis, M. Canagaratna and T. B. Onasch, Aerosol Sci. Tech. 41, 343-359, 2007.

Mobile laboratory with rapid response instruments for real-time measurements of urban and regional trace gas and particulate distributions and emission source characteristics, C. E. Kolb, S. C. Herndon, J. B. McManus, J. H. Shorter, M. S. Zahniser, D. D. Nelson, J. T. Jayne, M. R. Canagaratna and D. R. Worsnop, Environ. Sci. Technol. 38, 5694-5703, 2004.

A high-resolution mass spectrometer to measure atmospheric ion composition, H. Junninen, M. Ehn, T. Petäjä, L. Luosuj¨arvi, T. Kotiaho, R. Kostiainen, U. Rohner, M. Gonin, K. Fuhrer, M. Kulmala and D. R. Worsnop, Atmos. Meas. Tech. 3, 1039–1053, 2010.

Data Analysis

Spatially and seasonally resolved estimate of the ratio of organic mass to organic carbon, S. Philip, R. V. Martin, J. R. Pierce, J. L. Jimenez, Q. Zhang, M. R. Canagaratna, D. V. Spracklen, C. R. Nowlan, L. N. Lamsal, M. J. Cooper, N. A. Krotkov, Atmos. Environ. 87, 34-40, 2014.

Why do organic aerosols exist? Understanding aerosol lifetimes using the two-dimensional volatility basis set,
N. M. Donahue, W. Chuang, S. A. Epstein, J. H. Kroll, D. R. Worsnop, A. L. Robinson, P. J. Adams, S. N. Pandis, Environ. Chem. 10, 151-157, 2013.

Environ. Chem. 10, 151-157, 2013.Three-dimensional factorization of size-resolved organic aerosol mass spectra from Mexico City, I. M. Ulbrich, M. R. Canagaratna, M. J. Cubison, Q. Zhang, N. L. Ng, A. C. Aiken, J. L. Jimenez, Atmos. Meas. Tech. 5, 195-224, 2012.

Data Analysis (continued)

Receptor modeling of near-roadway aerosol mass spectrometer data in Las Vegas, Nevada, with EPA PMF, S. G. Brown, T. Lee, G. A. Norris, P. T. Roberts, J. L. Collett Jr., P. Pastero, D. R. Worsnop, Atmos. Chem. Phys., 12, 309-325, 2012.

Understanding atmospheric organic aerosols via factor analysis of aerosol mass spectrometty: a review, Q. Zhang, J. L. Jimenez, M. R. Canagaratna, I. M. Ulbrich, N. L. Ng, D. R. Worsnop, Y. Sun, Anal. Bioanal. Chem., 401, 3045-3067, 2011.

Interpretation of organic components from positive matrix factorization of aerosol mass spectrometric data, I. M. Ulbrich, M. R. Canagaratna, Q. Zhang, D. R. Worsnop and J. L. Jimenez, Atmospheric Chemistry and Physics 9, 2891-2918, 2009.

O/C and OM/OC ratios of primary, secondary, and ambient organic aerosols with a high resolution time-of-flight aerosol mass spectrometer, A. C. Aiken, P. F. DeCarlo, J. H. Kroll, D. R. Worsnop, J. A. Huffman, K. Docherty, I. M. Ulbrich, C. Mohr, J. R. Kimmel, D. Sueper, Y. Sun, Q. Zhang, A. Trimborn, M. Northway, P. J. Ziemann, M. R. Canagaratna, T. B. Onasch, M. R. Alfarra, A. S. H. Prevot, J. Dommen, J. Duplissy, A. Metzger, U. Baltensperger and J. L. Jiménez, Environ. Sci. Tech. 42, 4478-4485, 2008.

Deconvolution and quantification of hydrocarbon-like and oxygenated organic aerosols based on aerosol mass spectrometry, Q. Zhang, M. R. Alfarra, D. R. Worsnop, J. D. Allan, H. Coe, M. R. Canagaratna and J. L. Jiménez, Environ. Sci. and Technol. 39, 4938-4952 doi:10.1021/es048568l, 2005.

Technical note: Extraction of chemically resolved mass spectra from Aerodyne aerosol mass spectrometer data, J. D. Allan, H. Coe, K. N. Bower, M. R. Alfarra, A. E. Delia, J. L. Jiménez, A. M. Middlebrook, F. Drewnick, T. B. Onasch, M. R. Canagaratna, J. T. Jayne and D. R. Worsnop, J. Aerosol Sci. 35, 909-922, 2004.

Quantitative sampling using an Aerodyne aerosol mass spectrometer 1. Techniques of data interpretation and error analysis, J. D. Allan, H. Coe, K. N.Bower, P. I. Williams, M. W. Gallagher, M. R. Alfarra, J. L. Jiménez, D. R. Worsnop, J. T. Jayne, M. R. Canagaratna, E. Nemitz and A. G. McDonald, J. Geophys. Res. 108, 4090 doi:10.1029/2002JD002358, 2003.

Ambient aerosol sampling using the Aerodyne Aerosol Mass Spectrometer, J. L. Jiménez, J. T. Jayne, Q. Shi, C. E. Kolb, D. R. Worsnop, I. Yourshaw, J. H. Seinfeld, R. C. Flagan, X. Zhang, K. A. Smith, J. Morris and P. Davidovits, J. Geophys Res. 108, 8425 doi:10.1029/2001JD001213, 2003.

Quantitative sampling using an Aerodyne aerosol mass spectrometer 2. Measurements of fine particulate chemical composition in two UK cities, J. D. Allan, J. L. Jiménez, H. Coe, K. N. Bower, P. I. Williams, M. W. Gallagher and D. R. Worsnop, J. Geophys. Res. 108, 4091 doi:10.1029/2002JD002359, 2003.

Applications (Field and Lab)

Mass Spectrometry of Refractory Black Carbon Particles from Six Sources: Carbon-Cluster and Oxygenated Ions, J. C. Corbin, B. Sierau, M. Gysel, M. Laborde, A. Keller, J. Kim, A. Petzold, T. B. Onasch, U. Lohmann, A. A. Mensah, Atmos. Chem. Phys., 14, 2591-2603, 2014.

Changes in Concentration of Nitrogen-Containing Compounds in 10nm Particles of Boreal Forest Atmosphere at Snowmelt, T. Laitinen, H. Junninen, J. Parshintsev, J. Ruiz-Jimenez, T. Petäjä, S. Hautala, K. Hartonen, D. Worsnop, M. Kulmala, M.-L. Riekkola, J. Aerosol Sci., 70, 1-10, 2014.

Carbon Clusters in 50nm Urban Air Aerosol Particles Quantified by Laser Desorption–Ionization Aerosol Mass Spectrometer, T. Laitinen, T. Petäjä, J. Backman, K. Hartonen, H. Junninen, J. Ruiz-Jiménez, D. Worsnop, M. Kulmala, M.-L. Riekkola, Int. J. Mass Spectrom., 358, 17-24, 2014.

Applications (Field and Lab)  (continued)

Chemical Composition, Main Sources and Temporal Variability of Pm1 Aerosols in Southern African Grassland, P. Tiitta, V. Vakkari, P. Croteau, J. P. Beukes, P. G. van Zyl, M. Josipovic, A. D. Venter, K. Jaars, J. J. Pienaar, N. L. Ng, M. R. Canagaratna, J. T. Jayne, V. M. Kerminen, H. Kokkola, M. Kulmala, A. Laaksonen, D. R. Worsnop, L. Laakso, Atmos. Chem. Phys., 14, 1909-1927, 2014.

Black Carbon Emissions from in-Use Ships: A California Regional Assessment, G. M. Buffaloe, D. A. Lack, E. J. Williams, D. Coffman, K. L. Hayden, B. M. Lerner, S. M. Li, I. Nuaaman, P. Massoli, T. B. Onasch, P. K. Quinn, C. D. Cappa, Atmos. Chem. Phys., 14, 1881-18896, 2014.

A Case Study into the Measurement of Ship Emissions from Plume Intercepts of the Noaa Ship Miller Freeman, C. D. Cappa, E. J. Williams, D. A. Lack, G. M. Buffaloe, D. Coffman, K. L. Hayden, S. C. Herndon, B. M. Lerner, S. M. Li, P. Massoli, R. McLaren, I. Nuaaman, T. B. Onasch, P. K. Quinn, Atmos. Chem. Phys., 14, 1337-1352, 2014.

Semicontinuous Measurements of Gas–Particle Partitioning of Organic Acids in a Ponderosa Pine Forest Using a Movi-Hrtof-CIMS, R. L. N. Yatavelli, H. Stark, S. L. Thompson, J. R. Kimmel, M. J. Cubison, D. A. Day, P. Campuzano-Jost, B. B. Palm, A. Hodzic, J. A. Thornton, J. T. Jayne, D. R. Worsnop, J. L. Jimenez, Atmos. Chem. Phys., 14, 1527-1546, 2014.

A large source of low-volatility secondary organic aerosol, M. Ehn, J. A. Thornton, E. Kleist, M. Sipila, H. Junninen, I. Pullinen, M. Springer, F. Rubach, R. Tillmann, B. Lee, F. Lopez-Hilfiker, S. Andres, I.-H. Acir, M. Rissanen, T. Jokinen, S. Schobesberger, J. Kangasluoma, J. Kontkanen, T. Nieminen, T. Kurten, L. B. Nielsen, S. Jorgensen, H. G. Kjaergaard, M. Canagaratna, M. D. Maso, T. Berndt, T. Petaja, A. Wahner, V.-M. Kerminen, M. Kulmala, D. R. Worsnop, J. Wildt, T. F. Mentel, Nature, 506, 476-479, 2014.

Side-by-Side Comparison of Four Techniques Explains the Apparent Differences in the Organic Composition of Generated and Ambient Marine Aerosol Particles, A. A. Frossard, L. M. Russell, P. Massoli, T. S. Bates, P. K. Quinn, Aerosol Sci. Technol., 48, v-x, 2014. 

High-Resolution Mobility and Mass Spectrometry of Negative Ions Produced in a 241Am Aerosol Charger
, G. Steiner, T. Jokinen, H. Junninen, M. Sipilä, T. Petäjä, D. Worsnop, G. P. Reischl, M. Kulmala, Aerosol Sci. Technol., 48, 261-270, 2014.

Composition and Sources of the Organic Particle Emissions from Aircraft Engines, M. T. Timko, S. E. Albo, T. B. Onasch, E. C. Fortner, Z.Yu, R. C. Miake-Lye, M. R. Canagaratna, N. L. Ng, D. R. Worsnop, Aerosol Sci. Technol., 48, 61-73, 2014.

Measurements of submicron aerosols in Houston, Texas during the 2009 SHARP field campaign, M. E. Levy, R. Zhang, A. F. Khalizov, J. Zheng, D. R. Collins, C. R. Glen, Y. Wang, X.-Y. Yu, W. Luke, J. T. Jayne, E. Olaguer, J.Geophysical Res., 118, 10,518-10,510, DOI: 10.1002/jgrd.50785, 2013.

Organic aerosol composition and sources in Pasadena, California, during the 2010 CalNex campaign, P. L. Hayes, A. M. Ortega, M. J. Cubison, K. D. Froy, Y. Zhao, S. S. Cliff, W. W. Hu, D. W. Toohey, J. H. Flynn, B. L. Lefer, N. Grossberg, S. Alvarez, B. Rappenglück, J. W. Taylor, J. D. Allan, J. S. Holloway, J. B. Gilman, W. C. Kuster, J. A. de Gouw, P. Massoli, X. Zhang, J. Liu, R. J. Weber, A. L. Corrigan, L. M. Russell, G. Isaacman, D. R. Worton, N. M. Kreisberg, A. H. Goldstein, R. Thalman, E. M. Waxman, R. Volkamer, Y. H. Lin, J. D. Surratt, T. E. Kleindienst, J. H. Offenberg, S. Dusanter, S. Griffith, P. S. Stevens, J. Brioude, W. M. Angevine, J. L. Jimenez, J. Geophys. Res., 118, 9233–9257, DOI: 10.1002/jgrd.50530, 2013.

Aerosol mixing-state, hygroscopic growth and cloud activation efficiency during MIRAGE 2006, S. Lance, T. Raatikainen, T. Onasch, D. R. Worsnop, X.-Y. Yu, M. L. Alexander, M. R. Stolzenburg, P. H. McMurry, J. N. Smith, A. Nenes, Atmos. Chem. Phys., 13, 5049-5062, 2013.

Effect of chemical structure on secondary organic aerosol formation from C12 alkanes, L. D. Yee, J. S. Craven, C. L. Loza, K. A. Schilling, N. L. Ng, M. R. Canagaratna, P. J. Ziemann, R. C. Flagan, J. H. Seinfeld, Atmos. Chem. Phys., 13, 11121–11140, 2013.

Contribution of Nitrated Phenols to Wood Burning Brown Carbon Light Absorption in Detling, United Kingdom during Winter Time, C. Mohr, F. D. Lopez-Hilfiker, P. Zotter, A. S. H. Prévôt, L. Xu, N. L. Ng, S. C. Herndon, L. R. Williams, J. P. Franklin, M. S. Zahniser, D. R. Worsnop, W. B. Knighton, A. C. Aiken, K. J. Gorkowski, M. K. Dubey, J. D. Allan, J. A. Thornton, Environ. Sci. Technol., 47, 6316–6324, 2013.

Real-Time Continuous Characterization of Secondary Organic Aerosol Derived from Isoprene Epoxydiols in Downtown Atlanta, Georgia, Using the Aerodyne Aerosol Chemical Speciation Monitor, S. H. Budisulistiorini, M. R. Canagaratna, P. L. Croteau, W. J. Marth, K. Baumann, E. S. Edgerton, S. L. Shaw , E. M. Knipping , D. R. Worsnop, J. T. Jayne, A. Gold, J. D. Surratt, Environ. Sci. Technol., 47, 5686–5694, 2013.

Modeling organic aerosol from the oxidation of α-pinene in a Potential Aerosol Mass (PAM) chamber, S. Chen, W. H. Brune, A. T. Lambe, P. Davidovits, and T. B. Onasch, Atmos. Chem. Phys., 13, 5017-5031, 2013.

Relationship between Oxidation Level and Optical Properties of Secondary Organic Aerosol, A. T. Lambe, C. D. Cappa, P. Massoli, T. B. Onasch, S. D. Forestieri, A. T. Martin, M. J. Cummings, D. R. Croasdale, W. H. Brune, D. R. Worsnop, P. Davidovits, Environ. Sci. Technol., 47, 6349–6357,2013.

Online measurements of the emissions of intermediate-volatility and semi-volatile organic compounds from aircraft, E. S. Cross, J. F. Hunter, A. J. Carrasquillo, J. P. Frdnklin, S. C. Herndon, J. T. Jayne, D. R. Worsnop, R. C. Miake-Lye, J. H. Kroll, Atmos. Chem. Phys., 13, 7845-7858, 2013.

Aerosol chemical composition in cloud events by high resolution time-of-flight aerosol mass spectrometry, L. Hao, S. Romakkaniemi, A. Kortelainen, A. Jaatinen, H. Portin, P. Miettinen, M. Komppula, A. Leskinen, A. Virtanen, J. N. Smith, D. Sueper, D. R. Worsnop, K. E. J. Lehtinen, A. Laaksonen, Environ. Sci. Technol. 47, 2645-2653, 2013.

Chemically Resolved Particle Fluxes Over Tropical and Temperate Forests, D. K. Farmer, Q. Chen, J. R. Kimmel, K. S. Docherty, E. Nemitz, P. A. Artaxo, C. D. Cappa, S. T. Martin, J. L. Jimenez, Aerosol Sci. Technol., 47, 818-830, 2013.

Characteristics, sources and water-solubility of ambient submicron organic aerosol in springtime in Helsinki, Finland, H.Timonen, S. Carbone, M. Aurela, K. Saarnio, S. Saarikoski, N. L. Ng, M. R. Canagaratna, M. Kulmala, V.-M. Kerminen, D. R. Worsnop, R. Hillamo, J. Aerosol Sci., 56, 61-77, 2013.

Organic particle types by single-particle measurements using a time-of-flight aerosol mass spectrometer coupled with a light scattering module, S. Liu, L. M. Russell, D. T. Sueper, T. B. Onasch, Atmos Meas. Tech., 6, 187-197, 2013.

Enhanced SOA formation from mixed anthropogenic and biogenic emissions during the CARES campaign, J. E. Shilling, R. A. Zaveri, J. D. Fast, L. Kleinman, M. L. Alxander, M. R. Canagaratna, E. Fortner, J. M. Hubbe, J. T. Jayne, A. Sedlacek, A. Setyan, S. Springston, D. R. Worsnop, Q. Zhang, Atmos. Chem. Phys., 13, 2091-2113, 2013.

Analysis of secondary organic aerosol formation and aging using positive matrix factorization of high-resolution aerosol mass spectra: application to the dodecane low-NO x system, J. S. Craven, L. D. Yee, N. L. Ng, M. R. Canagaratna, C. L. Loza, K. A. Schilling, R. L. N. Yatavelli, J. A. Thornton, P. J. Ziemann, R. C. Flagan, J. H. Seinfeld, Atmos. Chem. Phys. 12, 11795-11817, 2012.

Long-term volatility measurements of submicron atmospheric aerosol in Hyytiälä, Finland, S. A. K. Häkkinen, M. Äijälä, K. Lehtipalo, H. Junninen, J. Backman, A. Virkkula, T. Nieminen, M. Vestenins, H. Hakola, M. Ehn, D. R. Worsnop, M. Kulmala, A. Virkkula, I. Riipinen, Atmos. Chem. Phys., 12, 10771-10786, 2012.

Particulate emissions measured during the tceq comprehensive flare emission study, E. C. Fortner, W. A. Brooks, T. B. Onasch, M. R. Canagaratna, P. Massoli, J. T. Jayne, J. P. Franklin, W. B. Knighton, J. Wormhoudt, D. R. Worsnop, C. E. Kolb, S. C. Herndon, Industrial & Engineering Chemistry Research, 51, 12586-12592, 2012.

Comparison of remote sensing and extractive sampling measurements of flare combustion efficiency, J. Wormhoudt, S. C. Herndon, J. Franklin, E. C. Wood, B. Knighton, S. Evans, C. Laush, M. Sloss, R. Spellicy, Industrial & Engineering Chemistry Research, 51, 12621-12629, 2012.

Combustion and destruction/removal efficiencies of in-use chemical flares in the greater houston area, E. C. Wood, S. C. Herndon, E. C. Fortner, T. B. Onasch, J. Wormhoudt, C. E. Kolb, W. B. Knighton, B. H. Lee, M. Zavala, L. Molina, M. Jones, Industrial & Engineering Chemistry Research, 51, 12685-12696, 2012.

Chemical characterization of springtime submicrometer aerosol in Po Valley, Italy,  S. Saarikoski, S. Carbone, S. Decesari, L. Giulianelli, F. Angelini, M. Canagaratna, N. L. Ng, A. Trimborn, M. C. Facchini, S. Fuzzi, R. Hillamo, D. Worsnop, Atmos. Chem. Phys. 12, 8401-8421, 2012.

Humidity-dependent phase state of SOA particles from biogenic and anthropogenic presursors, E. Saukkom, A. T. Lambe, P. Massolli, T. Koop, J. P. Wright, D. R. Croasdale, D. A. Pedernera, T. B. Onasch, A. Laaksonen, P. Davidovitz, D. R. Worsnop, A. Virtanen, Atmos. Chem. Phys, 12, 7517-7529, 2012.

Characterization of submicron particles influenced by mixed biogenic and anthropogenic emissions using high-resolution aerosol mass spectrometry: Results from CARES, A. Setyan, Q. Zhang, M. Merkel, W. B. Knighton, Y. Sun, J. E. Shilling, T. B. Onasch, S. C. Herndon, D. R. Worsnop, J. D. Fast, R. A. Zaveri, L. K. Berg, A. Weidensohler, B. A. Flowers, M. K. Dubey, R. Subramanian, Atmos. Chem. Phys., 12, 8131-8156, 2012.

Radiative absorption enhancements due to the mixing state of atmospheric black carbon, C. D. Cappa, T. B. Onasch, P. Massoli, D. R. Worsnop, T. S. Bates, E. S. Cross, P. Davidovits, J. Hakala, K. L. Hayden, B. T. Jobson, K. R. Kolesar, D. A. Lack, B. M. Lerner, S.-M. Li, D. Mellon, I. Nuaaman, J. S. Olfert, T. Petäjä, P. K. Quinn, C. Song, R. Subramanian, E. J. Williams, R. A. Zaveri, Science, 337, 1078-1081, 2012.

Overview of the 2010 carbonaceous aerosols and radiative effects study (CARES), R. A. Zaveri, W. J. Shaw, D. J. Cziczo,  B. Schmid, M. L. Alexander, M. Alexandrov, R. J. Alvarez, W. P. Arnott, D. B. Atkinson, S. Baidar, R. M. Banta, J. C. Barnard, J. Beranek, L. K. Berg, F. Brechtel, W. A. Brewer, J. F. Cahill, B. Cairns, C. D.Cappa, D.  Chand, S. China, J. M. Comstock, M. K. Dubey, R. C. Easter,  J. D. Fast, C. Floerchinger, B. A. Flowers, E. Fortner, J. S. Gaffney, M. K.  Gilles, K. Gorkowski, W. I. Gustafson, M. Gyawali, J. Hair, R. M. Hardesty, J. W. Harworth, S. Herndon, N. Hiranuma, C. Hostetler, J. M. Hubbe, J. T. Jayne, H. Jeong, B. T. Jobson, L. I. Kleinman, C. Kluzek, B. Knighton, K. R. Kolesar, C. Kuang, A. O. Langford, A. Laskin, R. D. Marchbanks, C. Mazzoleni, F. Mei, R. C. Moffet, D. Nelson, M. D. Obland, H. Oetjen, T. B. Onasch, I. Ortega, M. Ottaviani, M. Pekour, K. A. Prather, J. G. Radney, R. R. Rogers, S. P. Sandberg, A. Sedlacek, C. J. Senff, G. Senum, A. Setyan, J. E. Shilling, M. Shrivastava, C. Song, S. R. Springston, R. Subramanian, J. Tomlinson, R. Volkamer, H. W. Wallace, J. Wang, A. M. Weickmann, X.-Y. Yu, A. Zelenyuk, Q. Zhang, Atmos, Chem. Phys., 12, 7647-7687, 2012.

The deposition ice nucleation and immersion freezing potential of amorphous secondary organic aerosol: Pathways for ice and mixed-phase cloud formation, B. Wang, A. T. Lambe, P. Massoli, T. B. Onasch, P. Davidovits, D. R. Worsnop, D. A. Knopf, J. Geophys. Res., 117, D16209, doi:10.1029/2012JD018063, 2012.

Real-time measurements of engine-out trace elements: Application of a novel soot particle aerosol mass spectrometer for emissions characterization, E. S. Cross, A. Sappok, E. C. Fortner, J. F. Hunter, J. T. Jayne, W. A. Brooks, T. B. Onasch, V. W. Wong, A. Trimborn, D. R. Worsnop, J. H. Kroll, J. Eng. Gas Turbines Power, 134, 072801, 2012.

Secondary organic aerosol formation from low-NOx photooxidation of dodecane: Evolution of multigeneration gas-phase chemistry and aerosol composition , L. D. Yee, J. S. Craven, C. L. Loza, K. A. Schilling, N. L. Ng, M. R. Canagaratna, P. J. Ziemann, R. C. Flagan, J. H. Seinfeld, J. Phys. Chem., 116, 6211-6230, 2012.

OH-initiated heterogeneous aging of highly oxidized organic aerosol, S.H. Kessler, T. Nah, K. E. Daumit, J. D. Smith, S. R. Leone, C. E. Kolb, D. R. Worsnop, K. R. Wilson, J. H. Kroll,  J. Phys. Chem., 116, 6358-6363, 2012.

Characterisation of lightly oxidised organic aerosol formed from the photochemical aging of diesel exhaust particles, J. H. Kroll, J. D. Smith, D. R. Worsnop, K. R. Wilson, Environ. Chem., 9, 211-220, 2012.

Mass spectral analysis of organic aerosol formed downwind of the Deepwater Horizon Oil Spill: Field studies and laboratory confirmations,  B. Bahreini, A. M. Middlebrook, C. A. Brock, J. A. DeGouw, S. A. McKeen, L. R. Williams, K. E. Daumit, A. T. Lambe, P. Massoli, M. R. Canagaratna, R. Ahmadov, A. J. Carrasquillo, E. S. Cross, B. Ervens, J. S. Holloway, J. F. Hunter, T. B. Onasch, I. B. Pollack, J. M. Roberts, T. B. Ryerson, C. Warneke, P. Davidovits, D. R. Worsnop, J. H. Kroll, Environ. Sci. Technol.  46, 8025-8034, 2012.

Transitions from functionalization to fragmentation reactions of laboratory secondary organic aerosol (SOA) generated from the OH oxidation of alkane precursors, A. T. Lambe, T. B. Onasch, D. R. Croasdale, J. P. Wright, A. T. Martin, J. P. Franklin, P. Massoli, J. H. Kroll, M. R. Canagaratna, W. H. Brune, D. R. Worsnop, P. Davidovits, Environ. Sci. Technol. 46, 4530-4537, 2012.

New insights into nocturnal nucleation
, I. K. Ortega, T. Suni, M. Boy, T. Grönholm, H. E. Manninen, T. Nïeminen, M. Ehn, H. Junninen, H. Hakola, H. Hellén, T. Valmari, H. Arvela, S. Zegelin, D. Hughes, M. Kitchen, H. Cleugh, D. R. Worsnop, M. Kulmala, V-M. Kerminen,  Atmos. Chem. Phys. 12, 4297-4312, 2011.

Chemistry of Aerosols in the Environment
, C. Kolb, D. R. Worsnop, Annu. Rev. Phys. Chem. 63, 471-491, 2012.

Nitrogenated and aliphatic organic vapors as possible drivers for marine secondary organic aerosol growth, M. l. Dall'Osto, D. Ceburnis, C. Monahan, D. R. Worsnop, J. Bialek, M. Kulmala, T. Kurtén, M. Ehn, J. Wenger, J. Sodeau, R. Healy, C. O'Dowd, J. Geophys. Res., 117, D12311, doi:10.1029/2012JD017522, 2012.

Pollution gradients and chemical characterization of particulate matter from vehicular traffic near major roadways: results from the 2009 Queens College Air Quality Study in NYC, P. Massoli, E. C. Fortner, M. R. Canagaratna, L. R. Williams, Q. Zhang, Y. Sun, J. J. Schwab, A. Trimborn, T. B. Onasch, K. L. Demerjian, C. E. Kolb, D. R. Worsnop, J. T. Jayne, Aerosol Sci. Technol., 46, 1201-1218, 2012.

On-road measurement of gas and particle phase pollutant emission factors for individual heavy-duty diesel trucks, T. R. Dallmann, S. J. DeMartini, T. W. Kirchstetter, S. C. Herndon, E. C. Wood, R. A. Harley, Environ. Sci. Technol. 46, 8511-8518, 2012.

Characterization of near-highway submicron aerosols in New York City with a high-resolution aerosol mass spectrometer, Y. L. Sun, Q. Zhang, J. J. Schwab, W.-N. Chen, M.-S. Bae, H.-M. Hung, Y.-C. Lin, N. L. Ng, J. Jayne, P. Massoli, L. R. Williams, and K. L. Demerjian, Atmos. Chem. Phys. 12, 2215-2227, 2012.

Aerosol concentration and size distribution measured below, in, and above cloud from the DOE G-1 during VOCALS-REx, L. I. Kleinman, P. H. Daum, Y.-N. Lee, E. R. Lewis, A. J. Sedlacek III, G. I. Senum, S. R. Springston, J. Wang, J. Hubbe, J. Jayne, Q. Min, S. S. Yum, G. Allen, Atmos. Chem. Phys., 12, 207-223, 2012.

Related hygroscopicity and composition of organic aerosol particulate matter, J. Duplissy, P. F. DeCarlo, J. Dommen, M. R. Alfarra, A. Metzger, I. Barmpadimos, A. S. H. Prevot, E. Weingartner, T. Tritscher, M. Gysel, A. C. Aiken, J. L. Jimenez, M. R. Canagaratna, D. R. Worsnop, D. R. Collins, J. Tomlinson, U. Baltensperger, Atmos. Chem. Phys., 11, 1155-1165, 2011.

The glyoxal budget and its contribution to organic aerosol for Los Angeles, California, during CalNex 2010, R. A. Washenfelder, C. J. Young, S. S. Brown, W. M. Angevine, E. L. Atlas, D. R. Blake, D. M. Bon, M. J. Cubison, J. A. de Gouw, S. Dusanter, J. Flynn, J. B. Gilman, M. Graus, S. Griffith, N. Grossberg, P. L. Hayes, J. L. Jimenez, W. C. Kuster, B. L. Lefer, I. B. Pollack. T. B. Ryerson, H. Stark, P. S. Stevens, M. K. Trainer, J. Geophys. Res., 116, D00V02, doi:10.1029/2011JD016314, 2011.

Primary marine organic aerosol: a dichotomy of low hydroscopicity and high CCN activity, J. Ovadnevaite, D. Cebumis, G. Martucci, J. Bialek, C. Monahan, M. Rinaldi, M. C. Facchini, H. Berresheim, D. R. Worsnop, C. O'Dowd, Geophys. Res. Lett., 38, L21806, doi:10.1029/2011GL048869, 2011.

Aerosol mass spectrometer constraint on the global secondary organic aerosol budget, D. V. Spracklen, J. L. Jimenez, K. S. Carslaw, D. R. Worsnop, M. J. Evans, G. W. Mann, Q. Zhang, M. R. Canagaratna, J. Allan, H. Cos, G. McFiggans, A. Rap, P. Forster, Atmos. Chem. Phys., 11, 12109-12136, 2011.

Aerosol hygroscopicity and CCN activation kinetics in a boreal forest environment during the 2007 EUCAARI campaign, K. M. Cerully, T. Raatikainen, S. Lance, D. Tkacik, P. Tütta, T. Pettäjä, M. Ehn, M. Kulmala, D. r. Worsnop, A. Laaksonen, J. N. Smith, A. Nenes, Atmos. Chem. Phys., 11, 12369-12386, 2011.

The 2005 study of organic aerosols at Riverside (SOAR-1): instrumental intercomparisons and fine particle composition, K. S. Docherty, A. C. Aiken, J. A. Huffman, I. M. Ulbrich, P. F. DeCarlo, D. Sueper, D. R. Worsnop, D. S. Snyder, R. E. Peltier, R. J. Weber, B. D. Grover, D. J. Eatough, B. J. Williams, A. H. Goldstein, P. J. Ziemann, J. L. Jimenez, Atmos. Chem. Phys., 11, 12387-12420, 2011.

General overview: European Integrated Project on Aerosol Cloud Climate and Air Quality Interactions (EUCAARI) - integrating aerosol research from nano to global scales, M. Kulmala, A. Asmi, H. K. Lappalainen, U. Baltensperger, J.-L. Brenguier, M. C. Facchini, H.-C. Hansson, Ø. Hov, C. D. O'Dowd, U. Pöschl, A. Wiedensohler, R. Boers, O. Boucher, G. de Leeuw, H. A. C. Denier van der Gon, J. Feichter, R. Krejci, P. Laj, H. Lihavainen, U. Lohmann, G. McFiggans, T. Mentel, C. Pilinis, I. Riipinen, M. Schulz, A. Stohl, E. Swietlicki, E. Vignati, C. Alves, M. Amann, M. Ammann, S. Arabas, P. Artaxo, H. Baars, D. C. S. Beddows, R. Bergström, J. P. Beukes, M. Bilde, J. F. Burkhart, F. Canonaco, S. L. Clegg, H. Coe, S. Crumeyrolle, B. D'Anna, S. Decesari, S. Gilardoni, M. Fischer, A. M. Fjaeraa, C. Fountoukis, C. George, L. Gomes, P. Halloran, T. Hamburger, R. M. Harrison, H. Herrmann, T. Hoffmann, C. Hoose, M. Hu, A. Hyvärinen, U. Hõrrak, Y. Iinuma, T. Iversen, M. Josipovic, M. Kanakidou, A. Kiendler-Scharr, A. Kirkevåg, G. Kiss, Z. Klimont, P. Kolmonen, M. Komppula, J.-E. Kristjánsson, L. Laakso, A. Laaksonen, L. Labonnote, V. A. Lanz, K. E. J. Lehtinen, L. V. Rizzo, R. Makkonen, H. E. Manninen, G. McMeeking, J. Merikanto, A. Minikin, S. Mirme, W. T. Morgan, E. Nemitz, D. O'Donnell, T. S. Panwar, H. Pawlowska, A. Petzold, J. J. Pienaar, C. Pio, C. Plass-Duelmer, A. S. H. Prévôt, S. Pryor, C. L. Reddington, G. Roberts, D. Rosenfeld, J. Schwarz, Ø. Seland, K. Sellegri, X. J. Shen, M. Shiraiwa, H. Siebert, B. Sierau, D. Simpson, J. Y. Sun, D. Topping, P. Tunved, P. Vaattovaara, V. Vakkari, J. P. Veefkind, A. Visschedijk, H. Vuollekoski, R. Vuolo, B. Wehner, J. Wildt, S. Woodward, D. R. Worsnop, G.-J. van Zadelhoff, A. A. Zardini, K. Zhang, P. G. van Zyl, V.-M. Kerminen, K. S Carslaw, and S. N. Pandis. Atmos. Chem. Phys., 11, 13061-13143, 2011.

City lights and urban air, H. Stark, S. S. Brown, K. W. Wong, J. Stutz, C. D. Elvidge, I. B. Pollack, T. B. Ryerson, W. P. Dube, N. L. Wagner, D. D. Parrish, Nat. Geosci., 4, 730-731, 2011.

Changes in organic aerosol composition with aging inferred from aerosol mass spectra, N. L. Ng, M. R. Canagaratna, J. L. Jimenez, P. S. Chhabra, J. H. Seinfeld, D. R. Worsnop, Atmos. Chem. Phys. 11, 6465-6474, 2011.

Primary marine organic aerosol: A dichotomy of low hygroscopicity and high CCN activity, J. Ovadnevaite, D. Ceburnis, G. Martucci,  J. Bialek,  C. Monahan, M. Rinaldi, M. C. Facchini, H. Berresheim, D. R. Worsnop, C. O'Dowd, Geophys. Res. Lett., 38, L21806, doi:10.1029/2011GL048869, 2011.

Temperature response of the submicron organic aerosol from temperate forests, W. R.Leaitch, A. M. Macdonald, P. C. Brickell, J. Liggio, S. J. Sjostedt, A. Vlasenko, J. W. Bottenheim, L. Huang, S.-M. Li, P. S.K. Liu, D. Toom-Sauntry, K. A. Hayden, S. Sharma, N. C. Shantz, H. A. Wiebe, W. Zhang, J. P.D. Abbatt, J. G. Slowik, R. Y.-W. Chang, L. M. Russell, R. E. Schwartz, S. Takahama, J. T. Jayne, N. L. Ng, Atmos. Environ. 45, 6696-6704, 2011.

Empact of fuel quality regulation and speed reductions on shipping emissions: Implications for climate and air quality, D. A. Lack, C. D. Cappa, J. Langridge, R. Bahreini, G. Buffaloe, C. Brock, K. Cerully, D. Coffman, K. Hayden, J. Holloway, B. Lerner, P. Massoli, S.-M. Li, R. McLaren, A. M. Middlebrook, R. Moore, A. Nenes, I. Nuaaman, T. B. Onasch, J. Peischl, A. Perring, P. K. Quinn, T. Ryerson, J. P. Schwartz, R. Spackman, S. C. Wofsy, D. Worsnop, B. Xiang, E. Williams, Environ. Sci. Technol. 45, 9052-9060, 2011.

Elemental composition and oxidation of chamber organic aerosol, P. S. Chhabra, N. L. Ng, M. R. Canagaratna, A. L. Corrigan, L. M. Russell, D. R. Worsnop, R. C. Flagan, J. H. Seinfeld, Atmos. Chem. Phys. 11, 8827-8845, 2011.

Laboratory studies of the chemical composition and cloud condensation nuclei (CCN) activity of secondary organic aerosol (SOA) and oxidized primary organic aerodol (OPOA), A. T. Lambe, T. B. Onasch, P. Massoli, D. R. Croasdale, J. P. Wright, A. T. Ahern, L. R. Williams, D. R. Worsnop,, W. H. Brune, P. Davidovits, Atmos. Chem. Phys. 11, 8827-8845, 2011.

Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation, J. Kirkby, J. Curtius, J. Almeida, E. Dunne, J. Duplissy, S. Ehrhart, A. Franchin, S. Gagne, L. Ickes, A. Kurten, A. Kupc, A. Metzger, F. Riccobono, L. Rondo, S. Schobesberger, G. Tsagkogeorgas, D. Wimmer, A. Amorim, F. Bianchi, M. Breitenlechner, A. David, J. Dommen, A. Downard, M. Ehn, R. C. Flagan, S. Haider, A. Hansel, D. Hauser, W. Jud, H. Junninen, F. Kreissl, A. Kvashin, A. Laaksonen, K. Lehtipalo, J. Lima, E. R. Lovejoy, V. Makhmutov, S. Mathot, J. Mikkila, P. Minginette, S. Mogo, T. Nieminen, A. Onnela, P. Pereira, T. Petaja, R. Schnitzhofer, J. H. Seinfeld, M. Sipila, Y. Stozhkov, F. Stratmann, A. Tome, J. Vanjanen, Y. Viisanen, A. Vrtala, P. E. Wagner, H. Walther, E. Weingartner, H. Wex, P. M. Winkler, K. S. Carslow, D. R. Worsnop, U. Baltensperger, M. Kulmala, Nature 476, 429-433, 2011.

Evaluating the mixing of organic aerosol components using high-resolution aerosol mass spectrometry, L. Hildebrandt, K. M. Henry, J. H. Kroll, D. R. Worsnop, S. N. Pandis, N. M. Donahue, Environ. Sci. Technol. 45, 6329-6335, 2011.

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions, L. Q. Hao, S. Romakkaniemi, P. Yli-Pirilä, J. Joutsensaari, A. Kortelainen, J. H. Kroll, P. Miettinen, P. Vaattovaara, P. Tiitta, A. Jaatinen, M. K. Kajos, J. K. Holopainen, J. Heijari, J. Rinne, M. Kulmala, D. R. Worsnop, J. N. Smith, A. Laaksonen, Atmos. Chem. Phys., 11, 1367-1378, 2011.

Springtime Arctic haze contributions of submicron organic particles from European and Asian combustion sources, A. A. Frossard, P. M. Shaw, L. M. Russell, J. H. Kroll, M. R. Canagaratna, D. R. Worsnop, P. K. Quinn, T. S. Bates, J. Geophys. Res., 116, D05205, doi:10.1029/2010JD015178, 2011.

Characterization of aerosol photooxidation flow reactors: heterogeneous oxidation, secondary organic aerosol formation and cloud condensation nuclei activity measurements, A. T. Lambe, A. T. Ahern, L. R. Williams, J. G. Slowik, J. P. W. Wong, J. P. D. Abbatt, W. H. Brune, N. L. Ng, J. P. Wright, D. R. Croasdale, D. R. Worsnop, P. Davidovits, T. B. Onasch, Atmos. Meas. Technol., 4, 445–461, 2011.

Characterization of submicron aerosols at a rural site in Pearl River Delta of China using an Aerodyne High-Resolution Aerosol Mass Spectrometer, X.-F. Huang, L.-Y. He, M. Hu, M. R. Canagaratna, J. H. Kroll, N. L. Ng, Y.-H. Zhang, Y. Lin, L. Xue, T.-L. Sun, X.-G. Liu, M. Shao, J. T. Jayne, D. R. Worsnop. Atmos. Chem. Phys. 11, 1865–1877, 2011.

Formation of secondary organic aerosol from the direct photolytic generation of organic radicals, S. H. Kessler, T. Nah, A. J. Carrasquillo, J. T. Jayne, D. R. Worsnop, K. R. Wilson, J. H. Kroll, J. Phys. Chem. Lett. 2, 1295-1300, 2011.

Physicochemical properties and origin of organic groups detected in boreal forest using an aerosol mass spectrometer
, T. Raatikainen, P. Vaattovaara, P. Tiitta, P. Miettinen, J. Rautiainen, M. Ehn, M. Kulmala, A. Laaksonen and D. R. Worsnop, Atmos. Chem. Phys. 10, 2063–2077, 2010.

Highly time- and size-resolved characterization of submicron aerosol particles in Beijing using an Aerodyne Aerosol Mass Spectrometer, J. Sun, Q. Zhang, M. R. Canagaratna, Y. Zhang, N. L. Ng, Y. Sun, J. T. Jayne, X. Zhang, X. Zhang and D. R. Worsnop, Atmos. Environ. 44, 131–140, 2010.

Mexico City aerosol analysis during MILAGRO using high resolution aerosol mass spectrometry at the urban supersite (T0) - Part 1: Fine particle composition and organic source apportionment, A. C. Aiken, D. Salcedo, M. J. Cubison, J. A. Huffman, P. F. DeCarlo, I. M. Ulbrich, K. S. Docherty, D. Sueper, J. R. Kimmel, D. R. Worsnop, A. Trimborn, M. Northway, E. A. Stone, J. J. Schauer, R. M. Volkamer, E. Fortner, B. de Foy, J. Wang, A. Laskin, V. Shutthanandan, J. Zheng, R. Zhang, J. Gaffney, N. A. Marley, G. Paredes-Miranda, W. P. Arnott, L. T. Molina, G. Sosa and J. L. Jimenez, Atmospheric Chemistry and Physics 9, 6633-6653, 2009.

The role of VOC oxidation products in continental new particle formation, A. Laaksonen, M. Kulmala, C. D. O’Dowd, J. Joutsensaari, P. Vaattovaara, S. Mikkonen, K. E. J. Lehtinen, L. Sogacheva, M. D. Maso, P. Aalto, T. Petäjä, A. Sogachev, Y.J.Yoon, H. Lihavainen, D. Nilsson, M. C. Facchini, F. Cavalli, S. Fuzzi, T. Hoffmann, F. Arnold, M. Hanke, K. Sellegri, B. Umann, W. Junkermann, H. Coe, J. D. Allan, M. R. Alfarra, D. R. Worsnop, M.-L. Riekkola, T. Hyötyläinen and Y. Viisanen, Atmos. Chem. Phys. 8, 2657-2665, 2008.

Oxygenated and water-soluble organic aerosols in Tokyo, Y. Kondo, Y. Miyazaki, N. Takegawa, T. Miyakawa, R. J. Weber, J. L. Jimenez, Q. Zhang and D. R. Worsnop, Journal of Geophysical Research-Atmospheres 112, D01203, doi:10.1029/2006JD007056, 2007.

Size and composition measurements of background aerosol and new particle growth in a Finnish forest during QUEST 2 using an Aerodyne Aerosol Mass Spectrometer, J. D. Allan, M. R. Alfarra, K. N. Bower, H. Coe, J. T. Jayne, D. R. Worsnop, P. P. Aalto, M. Kulmala, T. Hyötyläinen, F. Cavalli and A. Laaksonen, Atmospheric Chemistry and Physics 6, 315-327, 2006.

Characterization of Ambient Aerosols in Mexico City during the MCMA-2003 Campaign with Aerosol Mass Spectrometry. Part II: Overview of the Results at the CENICA Supersite and Comparison to Previous Studies, D. Salcedo, K. Dzepina, T. B. Onasch, M. R. Canagaratna, J. T. Jayne, D. R. Worsnop, J. S. Gaffney, N. A. Marley, K. S. Johnson, B. Zuberi, L. T. Molina, M. J. Molina, V. Shutthanandan, Y. Xie and J. L. Jiménez, Atmospheric Chemistry and Physics Discussions 6, 925-946, 2006.

Characterization of an Aerodyne Aerosol Mass Spectrometer (AMS): Intercomparison with other aerosol instruments, N. Takegawa, Y. Miyazaki, Y. Kondo, Y. Komazaki, T. Miyakawa, J. L. Jiménez, J. T. Jayne, D. R. Worsnop, J. Allan and R. J. Weber, Aerosol Sci. Technol. 39, 760-770, 2005.

Hydrocarbon-like and oxygenated organic aerosols in Pittsburgh: insights into sources and processes of organic aerosols, Q. Zhang, D. R. Worsnop, M. R. Canagaratna and J. L. Jiménez, Atmospheric Chemistry and Physics 5, 3289-3311, 2005.

Time and Size-Resolved Chemical Composition of Submicron Particles in Pittsburgh – Implications for Aerosol Sources and Processes, Q. Zhang, M. R. Canagaratna, J. T. Jayne, D. R. Worsnop and J. L. Jiménez, J. Geophys. Res. 110, doi:10.1029/2004JD004649, 2005.

Insights into the Chemistry of Nucleation Bursts and New Particle Growth Events in Pittsburgh Based on Aerosol Mass Spectrometry, Q. Zhang, C. O. Stanier, M. C. Canagaratna, J. T. Jayne, D. R. Worsnop, S. N. Pandis and J. L. Jiménez, Env. Sci. and Tech. 38, 4797-4809, 2004.

Chase Studies of Particulate Emissions from in-use New York City Vehicles, M. R. Canagaratna, J. T. Jayne, D. A. Ghertner, S. Herndon, Q. Shi, J. L. Jiménez, P. Silva, P. Williams, T. Lanni, F. Drewnick, K. L. Demerjian, C. E. Kolb and D. R. Worsnop, Aerosol Sci. Technol. 38, 555-573, 2004.

Measurement of Ambient Aerosol Composition during the PMTACS-NY 2001 using an Aerosol Mass Spectrometer. Part I: Mass Concentrations, F. Drewnick, J. J. Schwab, J. T. Jayne, M. Canagaratna, D. R. Worsnop and K. L. Demerjian, Aerosol Sci. Technol. 38, 92-103, 2004.

Measurement of Ambient Aerosol Composition during the PMTACS-NY 2001 using an Aerosol Mass Spectrometer. Part II: Chemically Speciated Mass Distributions, F. Drewnick, J. T. Jayne, M. R. Canagaratna, D. R. Worsnop and K. L. Demerjian, Aerosol Sci. Technol. 38, 104-117, 2004.

Characterization of Urban and Regional Organic Aerosols in the Lower Fraser Valley using two Aerodyne Aerosol Mass Spectrometers, M. R. Alfarra, H. Coe, J. D. Allan, K. N. Bower, H. Boudries, M. R. Canagaratna, J. L. Jiménez, J. T. Jayne, A. Garforth, S. M. Li and D. R. Worsnop, Atmos. Env. 38, 5745-5758, 2004.

Chemical Composition of Titan’s Haze: Are PAHs present?, M. G. Trainer, A. A. Pavlov, J. L. Jiménez, C. P. McKay, D. R. Worsnop, O. B. Toon and M. A. Tolbert, Geophys. Res. Lett. 31, (17), L17S08, doi: 10.1029/2004GL019859, 2004.

Submicron aerosol composition at Trinidad Head, CA during ITCT 2K2, its relationship with gas phase volatile organic carbon and assessment of instrument performance, J. D. Allan, K. N. Bower, H. Coe, H. Boudries, J. T. Jayne, M. R. Canagaratna, D. B. Millet, A. H. Goldstein, P. K. Quinn, R. J. Weber and D. R. Worsnop, J Geophys. Res. 109, D23S24, doi:10.1029/2003JD004208, 2004.

Comparison of Particle Mass Spectrometers During the 1999 Atlanta Supersite Project, A. Middlebrook, D. M. Murphy, S.-H. Lee, D. S. Thomson, K. A. Prather, R. J. Wenzel, D.-Y. Liu, D. J. Phares, K. P. Rhoads, A. S. Wexler, M. V. Johnston, J. L. Jiménez, J. T. Jayne, D. R. Worsnop, I. Yourshaw, J. H. Seinfeld and R. C. Flagan, J Geophys. Res.-Atm. 108, 8424 doi:10.1029/2001JD000660, 2003.

Aircraft-based Aerosol Size and Composition Measurements during ACE-Asia using an Aerodyne Aerosol Mass Spectrometer, R. Bahreini, J. L. Jiménez, J. Wang, R. C. Flagan, J. H. Seinfeld, J. T. Jayne and D. R. Worsnop, J. Geophys. Res. 108, 8645.doi:10.1029/2002JD003226, 2003.

Heterogenous Kinetics

Secondary Organic Aerosol Yields of 12-Carbon Alkanes, C. L. Loza, J. S. Craven, L. D. Yee, M. M. Coggon, R. H. Schwantes, M. Shiraiwa, X. Zhang, K. A. Schilling, N. L. Ng, M. R. Canagaratna, P. J. Ziemann, R. C. Flagan, J. H. Seinfeld, Atmos. Chem. Phys., 14, 1423-1439, 2014.

The Role of Low Volatile Organics on Secondary Organic Aerosol Formation, H. Kokkola, P. Yli-Pirilä, M. Vesterinen, H. Korhonen, H. Keskinen, S. Romakkaniemi, L. Hao, A. Kortelainen, J. Joutsensaari, D. R. Worsnop, A. Virtanen, K. E. J. Lehtinen, Atmos. Chem. Phys., 14, 1689-700, 2014.

Comparing Simulated and Experimental Molecular Cluster Distributions, T. Olenius, S. Schobesberger, O. Kupiainen-Maatta, A. Franchin, H. Junninen, I. K. Ortega, T. Kurten, V. Loukonen, D. R. Worsnop, M. Kulmala, H. Vehkamaki, Faraday Discuss., 165,75-89, 2013.

Heterogenous Kinetics (continued)

How Do Organic Vapors Contribute to New-Particle Formation? N. M. Donahue, I. K. Ortega, W. Chuang, I. Riipinen, F. Riccobono, S. Schobesberger, J. Dommen, U. Baltensperger, M. Kulmala, D. R. Worsnop, H. Vehkamaki, Faraday Discuss., 165, 91-104, 2013.

Mass Accommodation and Chemical Reactions at Gas-Liquid Interfaces, P. Davidovits, C. E. Kolb, L. R. Williams, J. T. Jayne and D. R. Worsnop, Chem. Rev. 106, 1323-1354, 2006.

Density Changes of Aerosol Particles as a Result of Chemical Reaction, Y. Katrib, S. T. Martin, Y. Rudich, P. Davidovits, J. T. Jayne and D. R. Worsnop, Atmos. Chem. Phys. Discuss. 4, 6431-6472, 2004.

Mass Accommodation Coefficient of Water Vapor on Liquid Water, P. Davidovits, D. R. Worsnop, J. T. Jayne, C. E. Kolb, P. Winkler, A. Vrtala, P. E. Wagner, M. Kulmala, K. E. J. Lehtinen, T. Vesala and M. Mozurkewich, Geophysical Research Letters 31, doi:10.1029/2004GL020835, 2004.

Products and Mechanisms of Ozone Reactions with Oleic Acid for Aerosol Particles Having Core-Shell Morphologies, Y. Katrib, S. T. Martin, H. M. Hung, Y. Rudich, H. Zhang, J. Slowik, P. Davidovits, J. T. Jayne and D. R. Worsnop, J. Phys. Chem. A 108, 6686-6695, 2004.

Uptake of H217O(g) and D2O(g) by aqueous sulfuric acid droplets, M. Gershenzon, P. Davidovits, L. R. Williams, Q. Shi, J. T. Jayne, C. E. Kolb and D. R. Worsnop, J. Phys. Chem. A 108, 1567-1573, 2004.

Kinetics of submicron oleic acid aerosols with ozone: A novel aerosol mass spectrometric technique, J. W. Morris, P. Davidovits, J. T. Jayne, J. L. Jiménez, Q. Shi, C. E. Kolb, D. R. Worsnop, W. S. Barney and G. R. Cass, Geophys. Res. Lett. 29, doi 10.1029/2002GL014692, 2002.

A chemical kinetic model for reactive transformations of aerosol particles, D. R. Worsnop, J. Morris, Q. Shi, P. Davidovits and C. E. Kolb, Geophys. Res. Lett. 29, 10.1029/2002GL015542, 2002.

Kinetics of Trace Gas Uptake by Liquid Surfaces, C. E. Kolb, P. Davidovits, J. T. Jayne, Q. Shi and D. R. Worsnop, Progress in Reaction Kinetics and Mechanism 27, 1-46, 2002.

Uptake of HCl(g) and HBr(g) on Ethylene Glycol Surfaces as a Function of Relative Humidity and Temperature, Y. Q. Li, H. Z. Zhang, P. Davidovits, J. T. Jayne, C. E. Kolb and D. R. Worsnop, J. Phys. Chem. A 106, 1220-1227, 2002.

Mass and Thermal Accommodation Coefficients of H2O(g) on Liquid Water as a Function of Temperature, Y. Q. Li, P. Davidovits, Q. Shi, J. T. Jayne, C. E. Kolb and D. R. Worsnop, J. Phys. Chem. A 105, 10627-10634, 2001.

Kinetic Model for Reaction of ClONO2 with H2O, HCl and HOCl in Sulfuric Acid Solution, Q. Shi, J. T. Jayne, C. E. Kolb, D. R. Worsnop and P. Davidovits, J. Geophys. Res. 106, 24259-24274, 2001.

Gas-phase diffusion in droplet train measurements of uptake coefficients, D. R. Worsnop, Q. Shi, J. T. Jayne, C. E. Kolb, E. Swartz and P. Davidovits, J. Aerosol Sci. 32, 877-891, 2001.

Uptake of gas-phase ammonia. 2: Uptake by sulfuric acid surfaces, E. Swartz, Q. Shi, P. Davidovits, J. T. Jayne, D. R. Worsnop and C. E. Kolb, J. Phys. Chem. A 103, 8824-8833, 1999.

Uptake of Gas-Phase Ammonia. 1: Uptake by Aqueous Surfaces as a Function of pH, Q. Shi, P. Davidovits, J. T. Jayne, D. R. Worsnop and C. E. Kolb, J. Phys. Chem. A 103, 8812-8823, 1999.

Uptake of Gas-Phase SO2, H2S and CO2 into Droplets and Bubbles in Aqueous Acid Solutions, D. R. Worsnop, J. T. Jayne, C. E. Kolb, Q. Shi, J. Boniface, Y. Q. Li, O.V. Rattigan, E. Swartz and P. Davidovits, J. Aerosol Sci. 29, S987-S988, 1998.

The Accommodation Coefficient of H2SO4 Vapor on Aqueous Sulfuric Acid Surfaces and Gaseous Diffusion of H2SO4 in N2/H2O, U. Pöschl, M. Canagaratna, J. T. Jayne, L. T. Molina, D. R. Worsnop, C. E. Kolb and M. J. Molina, J. Phys. Chem. 102, 10082-10089, 1998.

The Pressure and Temperature Dependence of the Gas Phase Reaction of SO3 with H2O and the Heterogeneous Reaction of SO3 with H2O/H2SO4 Surfaces, J. T. Jayne, U. Pöschl, D. Dai, Y. Chen, L. T. Molina, D. R. Worsnop, C. E. Kolb and M. J. Molina, J. Phys. Chem. 101, 10000, 1997.

Heterogeneous Uptake of ClONO2 and N2O5 by Sulfuric Acid Solutions, G. N. Robinson, D. R. Worsnop, J. T. Jayne, C. E. Kolb and P. Davidovits, J. Geophys. Res. 102, 3583-3601, 1997.

Horizontal Bubble Train Apparatus for Heterogeneous Chemistry Studies: Uptake of Gas Phase Formaldehyde, E. Swartz, J. Boniface, I. Tchertkov, O. V. Rattigan, D. V. Robinson, P. Davidovits, D. R. Worsnop, J. T. Jayne and C. E. Kolb, Environ. Sci. Technol. 31, 2634-2641, 1997.

Uptake of Gas-Phase Formaldehyde by Aqueous Acid Surfaces, J. T. Jayne, D. R. Worsnop, C. E. Kolb, E. Swartz and P. Davidovits, J. Phys. Chem. 100, 8015, 1996.

Dynamics and Kinetics at the Gas-Liquid Interface, G. M. Nathanson, P. Davidovits, D. R. Worsnop and C. E. Kolb, J. Phys. Chem. 100, 13007-13020, 1996.

Laboratory Studies of Atmospheric Heterogeneous Chemistry, C. E. Kolb, D. R. Worsnop, M. S. Zahniser, P. Davidovits, L. F. Keyser, M.-T. Leu, M. J. Molina, D. R. Hanson, A. R. Ravishankara, L. R. Williams and M. A. Tolbert, Progress and Problems in Atmospheric Chemistry, 1995.

Bubble Column Apparatus for Heterogeneous Chemistry Studies, J. A. Shorter, W. J. DeBruyn, J. H. Hu, E. Swartz, P. Davidovits, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, Environ. Sci. Technol. 29, 1171, 1995.

The Uptake of Gas Molecules by Liquid Surfaces, P. Davidovits, J. H. Hu, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, Disc. of the Faraday Soc. 100, 65, 1995.

The Gas Phase Reaction of Sulfur Trioxide with Water Vapor, C. E. Kolb, J. T. Jayne, D. R. Worsnop, M. J. Molina, R. F. Meads and A. A. Viggiano, J. Amer. Chem. Soc. 116, 10314, 1994.

Atmospheric Chemistry and Environmental Impact of CFC Replacements:  HFCs and HCFCs, T. J. Wallington, D. R. Worsnop, O. J. Nielsen, J. Sehested, W. J. DeBruyn and J. A. Shorter, Environ. Sci. Tech. 28, 320A, 1994.

Reactive Uptake of Cl2(g) and Br2(g) by Aqueous Surfaces as a Function of Br- and I- Ion Concentration: The Effect of Chemical Reaction at the Interface, J. H. Hu, Q. Shi, P. Davidovits, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, J. Phys. Chem. 99, 8768, 1994.

Vapor Pressures of Solid Hydrates of Nitric Acid: Implications for Polar Stratospheric Clouds, D. R. Worsnop, L. E. Fox, M. S. Zahniser and S. C. Wofsy, Science 259, 71-74, 1993.

Uptake of N2O5 and HNO3 by Aqueous Sulfuric Acid, J. M. V. Doren, L. R. Watson, P. Davidovits, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, J. Phys. Chem. 95, 1684, 1991.

Uptake of Gas Molecules by Liquids: A Model, P. Davidovits, J. T. Jayne, S. X. Duan, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, J. Phys. Chem. 95, 6337-6340, 1991.

Temperature Dependence of the Uptake Coefficients of HCl, HNO3, and N2O5 by Water Droplets, J. M. V. Doren, L. R. Watson, P. Davidovits, D. R. Worsnop, M. S. Zahniser and C. E. Kolb, J. Phys. Chem. 94, 3264 1990.

Temperature Dependence of Mass Accommodation of SO2 and H2O2 on Aqueous Surfaces, D. R. Worsnop, M. S. Zahniser, C. E. Kolb, J. A. Gardner, L. R. Watson, J. M. V. Doren, J. T. Jayne and P. Davidovits, J. Phys. Chem. 93, 1159-1172, 1989.

Other HR-ToF Applications

Wintertime Aerosol Chemistry in Sub-Arctic Urban Air, S. Carbone, M. Aurela, K. Saarnio, S. Saarikoski, H. Timonen, A. Frey, D. Sueper, I. M. Ulbrich, J. L. Jimenez, M. Kulmala, D. R. Worsnop, R. E. Hillamo, Aerosol Sci. Technol., 48, 313-323, 2014.

Biogenic and biomass burning organic aerosol in a boreal forest at Hyytiälä, Finland, during HUMPPA-COPEC 2010, A.L. Corrigan, L.M. Russell, S. Takahama, M. Äijälä, M. Ehn, H. Junninen, J. Rinne, T. Petäjä, M. Kulmala, A. L. Vogel, C. J. Ebben, F. M. Geiger, P. Chhabra, J. H. Seinfeld, D. R. Worsnop, W. Song, J. Auld, J. Williams, Atmos. Chem. Phys. 13, 12233-12256, 2013.

Production mechanisms, number concentration, size distribution, chemical composition, and optical properties of sea spray aerosols, N. Meskhidze, M. D. Petters, K. Tsigaridis, T. Bates, C. O'Dowd, J. Reid, E. R. Lewis, B. Gantt, M. D. Anguelova, P. V. Bhave, J. Bird, A. H. Callaghan, D. Ceburnis, R. Chang, A. Clarke, G. de Leeuw, G. Deane, P. J. DeMott, S. Elliot, M. C. Facchini, C. W. Fairall, L. Hawkins, Y. Hu, J. G. Hudson, M. S. Johnson, K. C. Kaku, W. C. Keene, D. J. Kieber, M. S. Long, M. Mårtensson, R. L. Modini, C. L. Osburn, K. A. Prather, A. Pszenny, M. Rinaldi, L. M. Russell, M. Salter, A. M. Sayer, A. Smirnov, S. R. Suda, T. D. Toth, D. R. Worsnop, A. Wozniak, S. R. Zorn, Atmos. Sci. Lett., 14, 207–213, 2013.

Other HR-ToF Applications  (continued)

Remarks on Ion Generation for CPC Detection Efficiency Studies in Sub-3-nm Size Range, J. Kangasluoma, H. Junninen, K. Lehtipalo, J. Mikkilä, J. Vanhanen, M. Attoui, M. Sipilä, D. Worsnop, M. Kulmala, T. Petäjä, Aerosol Sci. Technol., 47, 556-563, 2013.

Volatility of Organic Aerosol: Evaporation of Ammonium Sulfate/Succinic Acid Aqueous Solution Droplets, T. Yli-Juuti, A. A. Zardini, A. C. Eriksson, A. M. K. Hansen, J. H. Pagels, E. Swietlicki, B. Svenningsson, M. Glasius, D. R. Worsnop, I. Riipinen, M. Bilde, Environ. Sci. Technol., 47, 12123–12130, 2013.

In situ submicron organic aerosol characterization at a boreal forest research station during HUMPPA-COPEC 2010 using soft and hard ionization mass spectrometry, A. L. Vogel, M. Äijälä, A. L. Corrigan, H. Junninen, M. Ehn, T. Petäjä, D. R. Worsnop, M. Kulmala, L. M. Russell, J. Williams, T. Hoffmann, Atmos. Chem. Phys., 13, 10933-10950, 2013.

Identification and quantification of particle growth channels during new particle formation
, M. R. Pennington, B. R. Bzdek, J. W. DePalma, J. N. Smith, A.-M. Kortelainen, L. H. Ruiz, T. Petäjä, M. Kulmala, D. R. Worsnop, M. V. Johnston, Atmos. Chem. Phys., 13, 10215-10225, 2013.

Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules
, S. Schobesberger, H. Junninen, F. Bianchi, G. Lönn, M. Ehn, K. Lehtipalo, J. Dommen, S. Ehrhart, I. K. Ortega, A. Franchin, T. Nieminen, F. Riccobono, M. Hutterli, J. Duplissy, J. Almeida, A. Amorim, M. Breitenlechner, A. J. Downard, E. M. Dunne, R. C. Flagan, M. Kajos, H. Keskinen, J. Kirkby, A. Kupc, A. Kürten, T. Kurtén, A. Laaksonen, S. Mathot, A. Onnela, A. P. Praplan, L. Rondo, F. D. Santos, S. Schallhart, R. Schnitzhofer, M. Sipilä, A. Tomé, G. Tsagkogeorgas, H. Vehkamäki, D. Wimmer, U. Baltensperger, K. S. Carslaw, J. Curtius, A. Hansel, T. Petäjä, M. Kulmala, N. M. Donahue, D. R. Worsnop, PNAS, 110, 17223-17228, 2013.

Evolution of particle composition in CLOUD nucleation experiments, H. Keskinen, A. Virtanen, J. Joutsensaari, G. Tsagkogeorgas, J. Duplissy, S. Schobesberger, M. Gysel, F. Riccobono, J. G. Slowik, F. Bianchi, T. Yli-Juuti, K. Lehtipalo, L. Rondo, M. Breitenlechner, A. Kupc, J. Almeida, A. Amorin, E. M. Dunne, A. J. Downward, S. Ehrhart, A. Franchin, M. K. Kajos, J. Kirkby, A. Kürten, T. Nieminen, V. Makhmutov, S. Mathot, P. Miettinen, A. Onnela, T. Petäjä, A. Praplan, F. D. Santos, S. Schallhart, M. Sipilä, Y. Stozhkov, A. Tomé, P. Vaattovaara, D. Wimmer, A. Prévôt, J. Dommen, N. M. Donahue, R. C. Flagan, E. Weingartner, Y. Viisanen, I. Riipinen, A. Hansel, J. Curtius, M. Kulmala, D. R. Worsnop, U. Baltensperger, H. Wex, F. Stratmann, A. Laaksonen, Atmos. Chem. Phys., 13, 5587-5600, 2013.

Direct Observations of Atmospheric Aerosol Nucleation, M. Kulmala, J. Kontkanen, H. Junninen, K. Lehtipalo, H. E. Manninen, T. Nieminen, T. Petäjä, M. Sipilä, S. Schobesberger, P. Rantala, A. Franchin, T. Jokinen, E. Järvinen, M. Äijälä, J. K.luoma, J. Hakala, P. P. Aalto, P. Paasonen, J. Mikkilä, J. Vanhanen, J. Aalto, H. Hakola, U. Makkonen, T. Ruuskanen, R. L. Mauldin III, J. Duplissy, H. Vehkamäki, J. Bäck, A. Kortelainen, I. Riipinen, T. Kurtén, M. V. Johnston, J. N. Smith, M. Ehn, T. F. Mentel, K. E. J. Lehtinen, A. Laaksonen, V.-M. Kerminen, D. R. Worsnop, Science, 339, (6122), 943-946, 2013.

Warming-induced increase in aerosol number concentration likely to moderate climate change, P. Paasonen, A. Asmi, T. Petäjä, M. K. Kajos, M. Äijälä, H. Junninen, T. Holst,    J. P. D. Abbatt, A. Arneth, W. Birmili, H. D. van der Gon, A. Hamed, A. Hoffer, L. Laakso, A. Laaksonen, W. R. Leaitch, C. Plass-Dülmer,  S. C. Pryor, P. Räisänen, E. Swietlicki, A. Wiedensohler, D. R. Worsnop, V.-M. Kerminen, M. Kulmala, Nat. Geosci., 6, 438–442, 2013.

Online atmospheric pressure chemical ionization ion trap mass spectrometry (APCI-IT-MSn) for measuring organic acids in concentrated bulk aerosol – a laboratory and field study, A. L. Vogel, M. Äijälä, M. Brüggemann, M. Ehn, H. Junninen, T. Petäjä, D. R. Worsnop, M. Kulmala, J. Williams, and T. Hoffmann, Atmos. Meas. Tech., 6, 431-443, 2013.

Gas-phase ozonolysis of selected olefins: The yield of stabilized criegee intermediate and the reactivity toward SO2, T. Berndt, T. Jokinen, R. L. Mauldin, T. Petäjä, H. Herrmann, H. Junninen, P. Paasonen, D. R. Worsnop, M. Sipilä, The Journal of Physical Chemistry Letters, 3, 2892-2896, 2012.

Gas phase formation of extremely oxidized pinene reaction products in chamber and ambient air, M. Ehn, E. Kleist, H. Junninen, T. Petäjä, G. Lönn, S. Schobesberger, M. Dal Mase, A. Trimborn, M. Kulmala, D. R. Worsnop, A. Wahner, J. Wildt, T. F. Mentel, Atmos. Chem. Phys., 12, 5113-5127, 2012.

The contribution of organics to atmospheric nanoparticle growth, I. Riipinen, T. Yli-Juuti, J. R. Pierce, T. petäjä, D. R. Worsnop, M. Kulmala, N. M. Donahue, Nat. Geosci., 5, 453-458, 2012.

Atmospheric sulphuric acid and neutral cluster measurements using CI-APi-TOF, T, Jokinen, M. Sipilä, H. Junninen, M. Ehn, G. Lönn, J. Hakala, T. Petäjä, R. L. Mauldin III, M. Kulmala, D. R. Worsnop, Atmos. Chem. Phys. 12, 4117-4125, 2012.

Improved resolution of hydrocarbon structures and constitutional isomers in complex mixtures using gas chromatography-vacuum ultraviolet-mass spectrometry, G. Isaacman, K. R. Wilson, A. W. H. Chan, D. R. Worton, J. R. Kimmel, T. Nah, T. Hohaus, M. Gonin, J. H. Kroll, D. R. Worsnop, A. H. Goldstein, Anal. Chem., 84, 2335-2342, 2012.

Characterisation of corona-generated ions used in a Neutral cluster and Air Ion Spectrometer (NAIS), H. D. Manninen, A. Franchin, S. Schobesberger, A. Hirsikko, J. Hakala, A. Skromulis, J. Kangasluomas, M. Ehn, H. Junninen, A. Mirme, S. Mirme, M. Sipilä, T. Petäjä, D. R. Worsnop, M. Kulmala, Atmos. Meas. Tech., 4, 2767-2776, 2011.

Quantification of the volatility of secondary organic compounds in ultrafine particles during nucleation events, J. R. Pierce, I. Riipinen, M. Kulmala, M. Ehn, T. Petäjä, H. Junninen, D. R. Worsnop, N. M. Donahue, Atmos. Chem. Phys. 11, 9019-9036, 2011.

Characterization of organic compounds in 10- to 50-nm aerosol particles in boreal forest with laser desorption-ionization aerosol mass spectrometer and comparison with other techniques, T. Laitinen, M. Ehn, H. Junninen, J. Ruiz-Jimenez, J. Parshintsev, K. Hartonen, M.-L. Riekkola, D. R. Worsnop, M. Kulmala, Atmos. Environ. 45, 3711-3719, 2011.

The effect of H2SO4 - amine clustering on chemical ionization mass spectrometry (CIMS) measurements of gas-phase sulfuric acid, T. Kurtén, T. Petäjä, J. Smith, I. K. Ortega, M. Sipulä, H. Junninen, M. Ehn, H. Vahkamäki, L. Mauldin, D. R. Worsnop, M. Kulmala, Atmos. Chem. Phys., 11, 3007-3019, 2011.

An instrumental comparison of mobility and mass measurements of atmospheric small ions, M. Ehn, J. Junninen, M. Sipila, T. Petaja, V.-M. Kerminen, H. Tammet, A. Mirme, S. Mirme, U. Horrak, M. Kulmala, D. R. Worsnop, Aerosol Sci. Tech., 45, 522-532, 2011.