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Adam T. Ahern
Researcher at Carnegie Mellon University
Publications - 23
Citations - 2087
Adam T. Ahern is an academic researcher from Carnegie Mellon University. The author has contributed to research in topics: Aerosol & Soot. The author has an hindex of 14, co-authored 23 publications receiving 1737 citations. Previous affiliations of Adam T. Ahern include National Oceanic and Atmospheric Administration & Boston College.
Papers
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Journal ArticleDOI
Brownness of organics in aerosols from biomass burning linked to their black carbon content
Rawad Saleh,Ellis S. Robinson,Daniel S. Tkacik,Adam T. Ahern,Shang Liu,Allison C. Aiken,Ryan C. Sullivan,Albert A. Presto,Manvendra K. Dubey,Robert J. Yokelson,Neil M. Donahue,Allen L. Robinson +11 more
TL;DR: In this article, the absorption properties of brown carbon aerosols from biomass burning are linked to their black carbon content, and they showed that the absorption property of aerosols can exert an important influence on Earth's climate.
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Laboratory studies of the chemical composition and cloud condensation nuclei (CCN) activity of secondary organic aerosol (SOA) and oxidized primary organic aerosol (OPOA)
Andrew T. Lambe,Timothy B. Onasch,Paola Massoli,D. R. Croasdale,Justin P. Wright,Adam T. Ahern,Leah R. Williams,D. R. Worsnop,William H. Brune,Paul Davidovits +9 more
TL;DR: In this paper, secondary organic aerosol (SOA) and oxidized OPOA were generated via controlled exposure of precursors to OH radicals and/or O 3 in a potential aerosol mass (PAM) flow reactor over timescales equivalent to 1-20 days of atmospheric aging.
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Characterization of aerosol photooxidation flow reactors: heterogeneous oxidation, secondary organic aerosol formation and cloud condensation nuclei activity measurements
Andrew T. Lambe,Adam T. Ahern,Leah R. Williams,Jay G. Slowik,Jenny P. S. Wong,Jonathan P. D. Abbatt,William H. Brune,Nga L. Ng,Justin P. Wright,D. R. Croasdale,D. R. Worsnop,Paul Davidovits,Timothy B. Onasch +12 more
TL;DR: In this paper, the performance of the Toronto Photo-Oxidation Tube (TPOT) and Potential Aerosol Mass (PAM) flow tube reactors under a variety of experimental conditions was reported.
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Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles
Paola Massoli,Andrew T. Lambe,Adam T. Ahern,Leah R. Williams,Mikael Ehn,Jyri Mikkilä,Manjula R. Canagaratna,William H. Brune,Timothy B. Onasch,J. T. Jayne,Tuukka Petäjä,Markku Kulmala,Ari Laaksonen,Charles E. Kolb,Paul Davidovits,D. R. Worsnop,D. R. Worsnop +16 more
TL;DR: In this paper, the authors investigated the relationship between oxidation level and hygroscopic properties of secondary organic aerosol (SOA) particles generated via OH radical oxidation in an aerosol flow reactor.
Journal ArticleDOI
Soot Particle Studies—Instrument Inter-Comparison—Project Overview
Eben S. Cross,Timothy B. Onasch,Adam T. Ahern,W. Wrobel,Jay G. Slowik,Jason S. Olfert,Daniel A. Lack,Paola Massoli,Christopher D. Cappa,Joshua P. Schwarz,J. Ryan Spackman,David W. Fahey,Arthur J. Sedlacek,A. Trimborn,John T. Jayne,Andrew Freedman,Leah R. Williams,Nga L. Ng,Claudio Mazzoleni,Manvendra K. Dubey,Benjamin T. Brem,Greg Kok,R. Subramanian,Steffen Freitag,Antony D. Clarke,D. A. Thornhill,Linsey C. Marr,Charles E. Kolb,Douglas R. Worsnop,Paul Davidovits +29 more
TL;DR: In this paper, an intercomparison study of instruments designed to measure the microphysical and optical properties of soot particles was completed, and the following mass-based instruments were tested: Couette Centrifugal Particle Mass Analyzer (CPMA), Time-of-Flight Aerosol Mass Spectrometer (TOMS-SMPS), Single Particle Soot Photometer (SP2), Soot Particle-Aerosol mass Spectrometers (SP-AMS) and Photoelectric Aerosols Sensor (PAS2000CE).