Search Results - "Onasch, T"

An Aerosol Chemical Speciation Monitor (ACSM) for Routine Monitoring of the Composition and Mass Concentrations of Ambient Aerosol by Ng, N. L., Herndon, S. C., Trimborn, A., Canagaratna, M. R., Croteau, P. L., Onasch, T. B., Sueper, D., Worsnop, D. R., Zhang, Q., Sun, Y. L., Jayne, J. T.

“…We present a new instrument, the Aerosol Chemical Speciation Monitor (ACSM), which routinely characterizes and monitors the mass and chemical composition of…”
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Effect of oxidant concentration, exposure time, and seed particles on secondary organic aerosol chemical composition and yield by Lambe, A. T, Chhabra, P. S, Onasch, T. B, Brune, W. H, Hunter, J. F, Kroll, J. H, Cummings, M. J, Brogan, J. F, Parmar, Y, Worsnop, D. R, Kolb, C. E, Davidovits, P

“…We performed a systematic intercomparison study of the chemistry and yields of secondary organic aerosol (SOA) generated from OH oxidation of a common set of…”
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Soot Particle Aerosol Mass Spectrometer: Development, Validation, and Initial Application by Onasch, T. B., Trimborn, A., Fortner, E. C., Jayne, J. T., Kok, G. L., Williams, L. R., Davidovits, P., Worsnop, D. R.

“…The Soot Particle Aerosol Mass Spectrometer (SP-AMS) was developed to measure the chemical and physical properties of particles containing refractory black…”
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Humidity-dependent phase state of SOA particles from biogenic and anthropogenic precursors by Saukko, E, Lambe, A. T, Massoli, P, Koop, T, Wright, J. P, Croasdale, D. R, Pedernera, D. A, Onasch, T. B, Laaksonen, A, Davidovits, P, Worsnop, D. R, Virtanen, A

“…The physical phase state (solid, semi-solid, or liquid) of secondary organic aerosol (SOA) particles has important implications for a number of atmospheric…”
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Viscous organic aerosol particles in the upper troposphere: diffusivity-controlled water uptake and ice nucleation? by Lienhard, D. M, Huisman, A. J, Krieger, U. K, Rudich, Y, Marcolli, C, Luo, B. P, Bones, D. L, Reid, J. P, Lambe, A. T, Canagaratna, M. R, Davidovits, P, Onasch, T. B, Worsnop, D. R, Steimer, S. S, Koop, T, Peter, T

“…New measurements of water diffusion in secondary organic aerosol (SOA) material produced by oxidation of α-pinene and in a number of organic/inorganic model…”
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Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles by Massoli, P., Lambe, A. T., Ahern, A. T., Williams, L. R., Ehn, M., Mikkilä, J., Canagaratna, M. R., Brune, W. H., Onasch, T. B., Jayne, J. T., Petäjä, T., Kulmala, M., Laaksonen, A., Kolb, C. E., Davidovits, P., Worsnop, D. R.

“…Laboratory experiments investigated the relationship between oxidation level and hygroscopic properties of secondary organic aerosol (SOA) particles generated…”
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Mixing state of carbonaceous aerosol in an urban environment: single particle characterization using the soot particle aerosol mass spectrometer (SP-AMS) by Lee, A. K. Y, Willis, M. D, Healy, R. M, Onasch, T. B, Abbatt, J. P. D

“…Understanding the impact of atmospheric black carbon (BC)-containing particles on human health and radiative forcing requires knowledge of the mixing state of…”
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Arctic sea ice melt leads to atmospheric new particle formation by Dall´Osto, M., Beddows, D. C. S., Tunved, P., Krejci, R., Ström, J., Hansson, H.-C., Yoon, Y. J., Park, Ki-Tae, Becagli, S., Udisti, R., Onasch, T., O´Dowd, C. D., Simó, R., Harrison, Roy M.

“…Atmospheric new particle formation (NPF) and growth significantly influences climate by supplying new seeds for cloud condensation and brightness. Currently,…”
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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) by Lambe, A. T., Onasch, T. B., Massoli, P., Croasdale, D. R., Wright, J. P., Ahern, A. T., Williams, L. R., Worsnop, D. R., Brune, W. H., Davidovits, P.

“…Secondary organic aerosol (SOA) and oxidized primary organic aerosol (OPOA) were produced in laboratory experiments from the oxidation of fourteen precursors…”
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Impacts of nonrefractory material on light absorption by aerosols emitted from biomass burning by McMeeking, G. R., Fortner, E., Onasch, T. B., Taylor, J. W., Flynn, M., Coe, H., Kreidenweis, S. M.

“…We present laboratory measurements of biomass‐burning aerosol light‐scattering and light absorption coefficients at 405, 532, and 781 nm and investigate their…”
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Characterization of particulate matter emissions from on-road gasoline and diesel vehicles using a soot particle aerosol mass spectrometer by Dallmann, T. R, Onasch, T. B, Kirchstetter, T. W, Worton, D. R, Fortner, E. C, Herndon, S. C, Wood, E. C, Franklin, J. P, Worsnop, D. R, Goldstein, A. H, Harley, R. A

“…Particulate matter (PM) emissions were measured in July 2010 from on-road motor vehicles driving through a highway tunnel in the San Francisco Bay area. A soot…”
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Chemically-Resolved Volatility Measurements of Organic Aerosol from Different Sources by Huffman, J. A, Docherty, K. S, Mohr, C, Cubison, M. J, Ulbrich, I. M, Ziemann, P. J, Onasch, T. B, Jimenez, J. L

“…A newly modified fast temperature-stepping thermodenuder (TD) was coupled to a High Resolution Time-of-Flight Aerosol Mass Spectrometer for rapid determination…”
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Measurements of ocean derived aerosol off the coast of California by Bates, T. S., Quinn, P. K., Frossard, A. A., Russell, L. M., Hakala, J., Petäjä, T., Kulmala, M., Covert, D. S., Cappa, C. D., Li, S.-M., Hayden, K. L., Nuaaman, I., McLaren, R., Massoli, P., Canagaratna, M. R., Onasch, T. B., Sueper, D., Worsnop, D. R., Keene, W. C.

“…Reliable characterization of particles freshly emitted from the ocean surface requires a sampling method that is able to isolate those particles and prevent…”
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Characterization of submicron particles influenced by mixed biogenic and anthropogenic emissions using high-resolution aerosol mass spectrometry: results from CARES by Setyan, A, Zhang, Q, Merkel, M, Knighton, W. B, Sun, Y, Song, C, Shilling, J. E, Onasch, T. B, Herndon, S. C, Worsnop, D. R, Fast, J. D, Zaveri, R. A, Berg, L. K, Wiedensohler, A, Flowers, B. A, Dubey, M. K, Subramanian, R

“…An Aerodyne high resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) was deployed during the Carbonaceous Aerosols and Radiative Effects Study…”
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A case study into the measurement of ship emissions from plume intercepts of the NOAA ship Miller Freeman by Cappa, C. D, Williams, E. J, Lack, D. A, Buffaloe, G. M, Coffman, D, Hayden, K. L, Herndon, S. C, Lerner, B. M, Li, S.-M, Massoli, P, McLaren, R, Nuaaman, I, Onasch, T. B, Quinn, P. K

“…Emissions factors (EFs) for gas and sub-micron particle-phase species were measured in intercepted plumes as a function of vessel speed from an underway…”
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Black carbon emissions from in-use ships: a California regional assessment by Buffaloe, G. M, Lack, D. A, Williams, E. J, Coffman, D, Hayden, K. L, Lerner, B. M, Li, S.-M, Nuaaman, I, Massoli, P, Onasch, T. B, Quinn, P. K, Cappa, C. D

“…Black carbon (BC) mass emission factors (EFBC; g BC (kg fuel)−1) from a variety of ocean-going vessels have been determined from measurements of BC and carbon…”
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Characterization of aerosol photooxidation flow reactors: heterogeneous oxidation, secondary organic aerosol formation and cloud condensation nuclei activity measurements by Lambe, A. T., Ahern, A. T., Williams, L. R., Slowik, J. G., Wong, J. P. S., Abbatt, J. P. D., Brune, W. H., Ng, N. L., Wright, J. P., Croasdale, D. R., Worsnop, D. R., Davidovits, P., Onasch, T. B.

“…Motivated by the need to develop instrumental techniques for characterizing organic aerosol aging, we report on the performance of the Toronto Photo-Oxidation…”
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Ubiquity and dominance of oxygenated species in organic aerosols in anthropogenically-influenced Northern Hemisphere midlatitudes by Zhang, Q., Jimenez, J. L., Canagaratna, M. R., Allan, J. D., Coe, H., Ulbrich, I., Alfarra, M. R., Takami, A., Middlebrook, A. M., Sun, Y. L., Dzepina, K., Dunlea, E., Docherty, K., DeCarlo, P. F., Salcedo, D., Onasch, T., Jayne, J. T., Miyoshi, T., Shimono, A., Hatakeyama, S., Takegawa, N., Kondo, Y., Schneider, J., Drewnick, F., Borrmann, S., Weimer, S., Demerjian, K., Williams, P., Bower, K., Bahreini, R., Cottrell, L., Griffin, R. J., Rautiainen, J., Sun, J. Y., Zhang, Y. M., Worsnop, D. R.

“…Organic aerosol (OA) data acquired by the Aerosol Mass Spectrometer (AMS) in 37 field campaigns were deconvolved into hydrocarbon‐like OA (HOA) and several…”
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Sources of particulate matter in the northeastern United States in summer: 1. Direct emissions and secondary formation of organic matter in urban plumes by de Gouw, J. A., Brock, C. A., Atlas, E. L., Bates, T. S., Fehsenfeld, F. C., Goldan, P. D., Holloway, J. S., Kuster, W. C., Lerner, B. M., Matthew, B. M., Middlebrook, A. M., Onasch, T. B., Peltier, R. E., Quinn, P. K., Senff, C. J., Stohl, A., Sullivan, A. P., Trainer, M., Warneke, C., Weber, R. J., Williams, E. J.

“…Ship and aircraft measurements of aerosol organic matter (OM) and water‐soluble organic carbon (WSOC) were made in fresh and aged pollution plumes from major…”
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Chemical and microphysical characterization of ambient aerosols with the aerodyne aerosol mass spectrometer by Canagaratna, M.R., Jayne, J.T., Jimenez, J.L., Allan, J.D., Alfarra, M.R., Zhang, Q., Onasch, T.B., Drewnick, F., Coe, H., Middlebrook, A., Delia, A., Williams, L.R., Trimborn, A.M., Northway, M.J., DeCarlo, P.F., Kolb, C.E., Davidovits, P., Worsnop, D.R.

“…The application of mass spectrometric techniques to the real‐time measurement and characterization of aerosols represents a significant advance in the field of…”
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