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Full-Text Articles in Medicine and Health Sciences
Sources Of Particulate Matter In The Northeastern United States In Summer: 1. Direct Emissions And Secondary Formation Of Organic Matter In Urban Plumes, J. A. De Gouw, C. A. Brock, E. L. Atlas, T. S. Bates, F. C. Fehsenfeld, P. D. Goldan, J. S. Holloway, W.C. Kuster, B. M. Lerner, B. M. Matthew, A. M. Middlebrook, T. B. Onasch, Richard Peltier, P. K. Quinn, C. J. Senff, A. Stohl, A. P. Sullivan, M. Trainer, C. Warneke, R. J. Weber, E. J. Williams
Sources Of Particulate Matter In The Northeastern United States In Summer: 1. Direct Emissions And Secondary Formation Of Organic Matter In Urban Plumes, J. A. De Gouw, C. A. Brock, E. L. Atlas, T. S. Bates, F. C. Fehsenfeld, P. D. Goldan, J. S. Holloway, W.C. Kuster, B. M. Lerner, B. M. Matthew, A. M. Middlebrook, T. B. Onasch, Richard Peltier, P. K. Quinn, C. J. Senff, A. Stohl, A. P. Sullivan, M. Trainer, C. Warneke, R. J. Weber, E. J. Williams
Richard E. Peltier
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 urban areas in the northeastern United States in the framework of the 2004 International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) study. A large part of the variability in the data was quantitatively described by a simple parameterization from a previous study that uses measured mixing ratios of CO and either the transport age or the photochemical age of the sampled air masses. The results suggest that OM was mostly due to secondary formation …
Sources Of Particulate Matter In The Northeastern United States In Summer: 2. Evolution Of Chemical And Microphysical Properties, C. A. Brock, A. P. Sullivan, Richard E. Peltier, R. J. Weber, A. Wollny, J. A. De Gouw, A. M. Middlebrook, E. L. Atlas, A. Stohl, M. K. Trainer, O. R. Cooper, F. C. Fehsenfeld, G. J. Frost, J. S. Holloway, G. Hübler, J. A. Neuman, T. B. Ryerson, C. Warneke, J. C. Wilson
Sources Of Particulate Matter In The Northeastern United States In Summer: 2. Evolution Of Chemical And Microphysical Properties, C. A. Brock, A. P. Sullivan, Richard E. Peltier, R. J. Weber, A. Wollny, J. A. De Gouw, A. M. Middlebrook, E. L. Atlas, A. Stohl, M. K. Trainer, O. R. Cooper, F. C. Fehsenfeld, G. J. Frost, J. S. Holloway, G. Hübler, J. A. Neuman, T. B. Ryerson, C. Warneke, J. C. Wilson
Richard E. Peltier
Measurements of aerosol particle size distributions and composition and of trace and reactive gas mixing ratios were made on the NOAA WP-3D aircraft downwind of mixed urban/industrial sources in the northeastern United States (U.S.). These measurements were made in noncloudy air during July and August 2004, under conditions where cloud processing was not likely to play an important role in oxidation chemistry. Under these conditions, particulate sulfate was found to be produced with an exponential time constant of 3.5 d from the gas-phase oxidation of SO2, which was ubiquitous but inhomogeneously distributed in the pollution plumes. When submicron particle mass …
Apportionment Of Primary And Secondary Organic Aerosols In Southern California During The 2005 Study Of Organic Aerosols In Riverside (Soar-1), Kenneth Docherty, Elizabeth Stone, Ingrid Ulbrich, Peter Decarlo, David C. Snyder, James Schauer, Richard Peltier, Rodney Weber, Shane Murphy, John Seinfeld, Brett Grover, Delbert Eatough, Jose Jimenez
Apportionment Of Primary And Secondary Organic Aerosols In Southern California During The 2005 Study Of Organic Aerosols In Riverside (Soar-1), Kenneth Docherty, Elizabeth Stone, Ingrid Ulbrich, Peter Decarlo, David C. Snyder, James Schauer, Richard Peltier, Rodney Weber, Shane Murphy, John Seinfeld, Brett Grover, Delbert Eatough, Jose Jimenez
Richard E. Peltier
Ambient sampling was conducted in Riverside, California during the 2005 Study of Organic Aerosols in Riverside to characterize the composition and sources of organic aerosol using a variety of state-of-the-art instrumentation and source apportionment techniques. The secondary organic aerosol (SOA) mass is estimated by elemental carbon and carbon monoxide tracer methods, water soluble organic carbon content, chemical mass balance of organic molecular markers, and positive matrix factorization of high-resolution aerosol mass spectrometer data. Estimates obtained from each of these methods indicate that the organic fraction in ambient aerosol is overwhelmingly secondary in nature during a period of several weeks with …
On The Volatility And Production Mechanisms Of Newly Formed Nitrate And Water Soluble Organic Aerosol In Mexico City, C. J. Hennigan, A. P. Sullivan, C. I. Fountoukis, A. Nenes, A. Hecobian, O. Vargas, Richard E. Peltier, A. T. Case Hanks, L. G. Huey, B. L. Lefer
On The Volatility And Production Mechanisms Of Newly Formed Nitrate And Water Soluble Organic Aerosol In Mexico City, C. J. Hennigan, A. P. Sullivan, C. I. Fountoukis, A. Nenes, A. Hecobian, O. Vargas, Richard E. Peltier, A. T. Case Hanks, L. G. Huey, B. L. Lefer
Richard E. Peltier
Measurements of atmospheric gases and fine par- ticle chemistry were made in the Mexico City Metropolitan Area (MCMA) at a site ∼ 30 km down wind of the city cen- ter. Ammonium nitrate (NH 4 NO 3 ) dominated the inorganic aerosol fraction and showed a distinct diurnal signature char- acterized by rapid morning production and a rapid mid-day concentration decrease. Between the hours of 08:00–12:45, particulate water-soluble organic carbon (WSOC) concentra- tions increased and decreased in a manner consistent with that of NO − 3 , and the two were highly correlated ( R 2 =0.88) during this time. …