Search Results - "Wennberg, P"

Emission factors for open and domestic biomass burning for use in atmospheric models by Akagi, S. K., Yokelson, R. J., Wiedinmyer, C., Alvarado, M. J., Reid, J. S., Karl, T., Crounse, J. D., Wennberg, P. O.

“…Biomass burning (BB) is the second largest source of trace gases and the largest source of primary fine carbonaceous particles in the global troposphere. Many…”
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Emissions of greenhouse gases from a North American megacity by Wunch, D., Wennberg, P. O., Toon, G. C., Keppel-Aleks, G., Yavin, Y. G.

“…Atmospheric column abundances of carbon dioxide (CO2), carbon monoxide (CO), methane (CH4) and nitrous oxide (N2O) have been measured above the South Coast air…”
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Impacts of Traffic Reductions Associated With COVID‐19 on Southern California Air Quality by Parker, H. A., Hasheminassab, S., Crounse, J. D., Roehl, C. M., Wennberg, P. O.

“…On 19 March 2020, California put in place Stay‐At‐Home orders to reduce the spread of SARS‐CoV‐2. As a result, decreases up to 50% in traffic occurred across…”
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Sources, seasonality, and trends of southeast US aerosol: an integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model by Kim, P. S, Jacob, D. J, Fisher, J. A, Travis, K, Yu, K, Zhu, L, Yantosca, R. M, Sulprizio, M. P, Jimenez, J. L, Campuzano-Jost, P, Froyd, K. D, Liao, J, Hair, J. W, Fenn, M. A, Butler, C. F, Wagner, N. L, Gordon, T. D, Welti, A, Wennberg, P. O, Crounse, J. D, St. Clair, J. M, Teng, A. P, Millet, D. B, Schwarz, J. P, Markovic, M. Z, Perring, A. E

“…We use an ensemble of surface (EPA CSN, IMPROVE, SEARCH, AERONET), aircraft (SEAC4RS), and satellite (MODIS, MISR) observations over the southeast US during…”
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Impact of the isoprene photochemical cascade on tropical ozone by Paulot, F, Henze, D. K, Wennberg, P. O

“…Tropical tropospheric ozone affects Earth's radiative forcing and the oxidative capacity of the atmosphere. Considerable work has been devoted to the study of…”
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Exercise testing criteria to diagnose lower extremity peripheral artery disease assessed by computed-tomography angiography by Stivalet, O, Paisant, A, Belabbas, D, Omarjee, L, Le Faucheur, A, Landreau, P, Garlantezec, R, Jaquinandi, V, Liedl, D A, Wennberg, P W, Mahé, G

“…The sensitivity and specificity of exercise testing have never been studied simultaneously against an objective quantification of arterial stenosis. Aims were…”
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Sources of variations in total column carbon dioxide by Keppel-Aleks, G., Wennberg, P. O., Schneider, T.

“…Observations of gradients in the total CO2 column, 〈CO2〉, are expected to provide improved constraints on surface fluxes of CO2. Here we use a general…”
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The Orbiting Carbon Observatory-2 early science investigations of regional carbon dioxide fluxes by Eldering, A., Wennberg, P. O., Crisp, D., Schimel, D. S., Gunson, M. R., Chatterjee, A., Liu, J., Schwandner, F. M., Sun, Y., O’Dell, C. W., Frankenberg, C., Taylor, T., Fisher, B., Osterman, G. B., Wunch, D., Hakkarainen, J., Tamminen, J., Weir, B.

“…NASA's Orbiting Carbon Observatory-2 (OCO-2) mission was motivated by the need to diagnose how the increasing concentration of atmospheric carbon dioxide (CO )…”
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Secondary organic aerosol formation from biomass burning intermediates: phenol and methoxyphenols by Yee, L. D, Kautzman, K. E, Loza, C. L, Schilling, K. A, Coggon, M. M, Chhabra, P. S, Chan, M. N, Chan, A. W. H, Hersey, S. P, Crounse, J. D, Wennberg, P. O, Flagan, R. C, Seinfeld, J. H

“…The formation of secondary organic aerosol from oxidation of phenol, guaiacol (2-methoxyphenol), and syringol (2,6-dimethoxyphenol), major components of…”
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Daily and 3-hourly variability in global fire emissions and consequences for atmospheric model predictions of carbon monoxide by Mu, M., Randerson, J. T., van der Werf, G. R., Giglio, L., Kasibhatla, P., Morton, D., Collatz, G. J., DeFries, R. S., Hyer, E. J., Prins, E. M., Griffith, D. W. T., Wunch, D., Toon, G. C., Sherlock, V., Wennberg, P. O.

“…Attribution of the causes of atmospheric trace gas and aerosol variability often requires the use of high resolution time series of anthropogenic and natural…”
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Investigation of the sources and processing of organic aerosol over the Central Mexican Plateau from aircraft measurements during MILAGRO by DeCarlo, P. F., Ulbrich, I. M., Crounse, J., de Foy, B., Dunlea, E. J., Aiken, A. C., Knapp, D., Weinheimer, A. J., Campos, T., Wennberg, P. O., Jimenez, J. L.

“…Organic aerosol (OA) represents approximately half of the submicron aerosol in Mexico City and the Central Mexican Plateau. This study uses the high time…”
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Insights into hydroxyl measurements and atmospheric oxidation in a California forest by Mao, J, Ren, X, Zhang, L, Van Duin, D. M, Cohen, R. C, Park, J.-H, Goldstein, A. H, Paulot, F, Beaver, M. R, Crounse, J. D, Wennberg, P. O, DiGangi, J. P, Henry, S. B, Keutsch, F. N, Park, C, Schade, G. W, Wolfe, G. M, Thornton, J. A, Brune, W. H

“…The understanding of oxidation in forest atmospheres is being challenged by measurements of unexpectedly large amounts of hydroxyl (OH). A significant number…”
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Organic aerosol formation from the reactive uptake of isoprene epoxydiols (IEPOX) onto non-acidified inorganic seeds by Nguyen, T. B, Coggon, M. M, Bates, K. H, Zhang, X, Schwantes, R. H, Schilling, K. A, Loza, C. L, Flagan, R. C, Wennberg, P. O, Seinfeld, J. H

“…The reactive partitioning of cis and trans β-IEPOX was investigated on hydrated inorganic seed particles, without the addition of acids. No organic aerosol…”
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Estimating global and North American methane emissions with high spatial resolution using GOSAT satellite data by Turner, A. J, Jacob, D. J, Wecht, K. J, Maasakkers, J. D, Lundgren, E, Andrews, A. E, Biraud, S. C, Boesch, H, Bowman, K. W, Deutscher, N. M, Dubey, M. K, Griffith, D. W. T, Hase, F, Kuze, A, Notholt, J, Ohyama, H, Parker, R, Payne, V. H, Sussmann, R, Sweeney, C, Velazco, V. A, Warneke, T, Wennberg, P. O, Wunch, D

“…We use 2009–2011 space-borne methane observations from the Greenhouse Gases Observing SATellite (GOSAT) to estimate global and North American methane emissions…”
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Data Drought in the Humid Tropics: How to Overcome the Cloud Barrier in Greenhouse Gas Remote Sensing by Frankenberg, C., Bar‐On, Y. M., Yin, Y., Wennberg, P. O., Jacob, D. J., Michalak, A. M.

“…Diagnosing land‐atmosphere fluxes of carbon‐dioxide (CO2) and methane (CH4) is essential for evaluating carbon‐climate feedbacks. Greenhouse gas satellite…”
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Chemical Composition of Gas- and Aerosol-Phase Products from the Photooxidation of Naphthalene by Kautzman, K. E, Surratt, J. D, Chan, M. N, Chan, A. W. H, Hersey, S. P, Chhabra, P. S, Dalleska, N. F, Wennberg, P. O, Flagan, R. C, Seinfeld, J. H

“…The current work focuses on the detailed evolution of the chemical composition of both the gas- and aerosol-phase constituents produced from the OH-initiated…”
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Organic nitrate chemistry and its implications for nitrogen budgets in an isoprene- and monoterpene-rich atmosphere: constraints from aircraft (SEAC 4 RS) and ground-based (SOAS) observations in the Southeast US by Fisher, J A, Jacob, D J, Travis, K R, Kim, P S, Marais, E A, Miller, C Chan, Yu, K, Zhu, L, Yantosca, R M, Sulprizio, M P, Mao, J, Wennberg, P O, Crounse, J D, Teng, A P, Nguyen, T B, St Clair, J M, Cohen, R C, Romer, P, Nault, B A, Wooldridge, P J, Jimenez, J L, Campuzano-Jost, P, Day, D A, Hu, W, Shepson, P B, Xiong, F, Blake, D R, Goldstein, A H, Misztal, P K, Hanisco, T F, Wolfe, G M, Ryerson, T B, Wisthaler, A, Mikoviny, T

“…Formation of organic nitrates (RONO ) during oxidation of biogenic volatile organic compounds (BVOCs: isoprene, monoterpenes) is a significant loss pathway for…”
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Conversion of hydroperoxides to carbonyls in field and laboratory instrumentation: Observational bias in diagnosing pristine versus anthropogenically controlled atmospheric chemistry by Rivera-Rios, J. C., Nguyen, T. B., Crounse, J. D., Jud, W., St. Clair, J. M., Mikoviny, T., Gilman, J. B., Lerner, B. M., Kaiser, J. B., de Gouw, J., Wisthaler, A., Hansel, A., Wennberg, P. O., Seinfeld, J. H., Keutsch, F. N.

“…Atmospheric volatile organic compound (VOC) oxidation mechanisms under pristine (rural/remote) and urban (anthropogenically‐influenced) conditions follow…”
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Contribution of isoprene-derived organosulfates to free tropospheric aerosol mass by Froyd, K. D., Murphy, S. M., Murphy, D. M., de Gouw, J. A., Eddingsaas, N. C., Wennberg, P. O., Thiemens, Mark H.

“…Recent laboratory studies have demonstrated that isoprene oxidation products can partition to atmospheric aerosols by reacting with condensed phase sulfuric…”
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Speciation of OH reactivity above the canopy of an isoprene-dominated forest by Kaiser, J, Skog, K. M, Baumann, K, Bertman, S. B, Brown, S. B, Brune, W. H, Crounse, J. D, de Gouw, J. A, Edgerton, E. S, Feiner, P. A, Goldstein, A. H, Koss, A, Misztal, P. K, Nguyen, T. B, Olson, K. F, St. Clair, J. M, Teng, A. P, Toma, S, Wennberg, P. O, Wild, R. J, Zhang, L, Keutsch, F. N

“…Measurements of OH reactivity, the inverse lifetime of the OH radical, can provide a top–down estimate of the total amount of reactive carbon in an air mass…”
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