Search Results - "Wennberg, PO"

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…”
Get full text

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…”
Get full text

Isoprene photooxidation: new insights into the production of acids and organic nitrates by Paulot, F., Crounse, J. D., Kjaergaard, H. G., Kroll, J. H., Seinfeld, J. H., Wennberg, P. O.

“…We describe a nearly explicit chemical mechanism for isoprene photooxidation guided by chamber studies that include time-resolved observation of an extensive…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Secondary organic aerosol formation from photooxidation of naphthalene and alkylnaphthalenes: implications for oxidation of intermediate volatility organic compounds (IVOCs) by Chan, A. W. H., Kautzman, K. E., Chhabra, P. S., Surratt, J. D., Chan, M. N., Crounse, J. D., Kürten, A., Wennberg, P. O., Flagan, R. C., Seinfeld, J. H.

“…Current atmospheric models do not include secondary organic aerosol (SOA) production from gas-phase reactions of polycyclic aromatic hydrocarbons (PAHs)…”
Get full text

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…”
Get full text

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…”
Get full text

Quantifying sources and sinks of reactive gases in the lower atmosphere using airborne flux observations by Wolfe, G. M., Hanisco, T. F., Arkinson, H. L., Bui, T. P., Crounse, J. D., Dean-Day, J., Goldstein, A., Guenther, A., Hall, S. R., Huey, G., Jacob, D. J., Karl, T., Kim, P. S., Liu, X., Marvin, M. R., Mikoviny, T., Misztal, P. K., Nguyen, T. B., Peischl, J., Pollack, I., Ryerson, T., St. Clair, J. M., Teng, A., Travis, K. R., Ullmann, K., Wennberg, P. O., Wisthaler, A.

“…Atmospheric composition is governed by the interplay of emissions, chemistry, deposition, and transport. Substantial questions surround each of these…”
Get full text

Carbon dioxide column abundances at the Wisconsin Tall Tower site by Washenfelder, R. A., Toon, G. C., Blavier, J.-F., Yang, Z., Allen, N. T., Wennberg, P. O., Vay, S. A., Matross, D. M., Daube, B. C.

“…We have developed an automated observatory for measuring atmospheric column abundances of CO2 and O2 using near‐infrared spectra of the Sun obtained with a…”
Get full text

Convective transport and scavenging of peroxides by thunderstorms observed over the central U.S. during DC3 by Barth, M. C., Bela, M. M., Fried, A., Wennberg, P. O., Crounse, J. D., St. Clair, J. M., Blake, N. J., Blake, D. R., Homeyer, C. R., Brune, W. H., Zhang, L., Mao, J., Ren, X., Ryerson, T. B., Pollack, I. B., Peischl, J., Cohen, R. C., Nault, B. A., Huey, L. G., Liu, X., Cantrell, C. A.

“…One of the objectives of the Deep Convective Clouds and Chemistry (DC3) field experiment was to determine the scavenging of soluble trace gases by…”
Get full text

Biomass burning and urban air pollution over the Central Mexican Plateau by Crounse, J. D., DeCarlo, P. F., Blake, D. R., Emmons, L. K., Campos, T. L., Apel, E. C., Clarke, A. D., Weinheimer, A. J., McCabe, D. C., Yokelson, R. J., Jimenez, J. L., Wennberg, P. O.

“…Observations during the 2006 dry season of highly elevated concentrations of cyanides in the atmosphere above Mexico City (MC) and the surrounding plains…”
Get full text

Pollution influences on atmospheric composition and chemistry at high northern latitudes: Boreal and California forest fire emissions by Singh, H.B., Anderson, B.E., Brune, W.H., Cai, C., Cohen, R.C., Crawford, J.H., Cubison, M.J., Czech, E.P., Emmons, L., Fuelberg, H.E., Huey, G., Jacob, D.J., Jimenez, J.L., Kaduwela, A., Kondo, Y., Mao, J., Olson, J.R., Sachse, G.W., Vay, S.A., Weinheimer, A., Wennberg, P.O., Wisthaler, A.

“…We analyze detailed atmospheric gas/aerosol composition data acquired during the 2008 NASA ARCTAS (Arctic Research of the Composition of the Troposphere from…”
Get full text

Emissions from forest fires near Mexico City by Yokelson, R.J, Urbanski, S.P, Atlas, E.L, Toohey, D.W, Alvarado, E.C, Crounse, J.D, Wennberg, P.O, Fisher, M.E, Wold, C.E, Campos, T.L, Adachi, K, Buseck, P.R, Hao, W.M

“…The emissions of NOx (defined as NO (nitric oxide) + NO2 (nitrogen dioxide)) and hydrogen cyanide (HCN), per unit amount of fuel burned, from fires in the pine…”
Get full text

The imprint of surface fluxes and transport on variations in total column carbon dioxide by Keppel-Aleks, G, Wennberg, P. O, Washenfelder, R. A, Wunch, D, Schneider, T, Toon, G. C, Andres, R. J, Blavier, J.-F, Connor, B, Davis, K. J, Desai, A. R, Messerschmidt, J, Notholt, J, Roehl, C. M, Sherlock, V, Stephens, B. B, Vay, S. A, Wofsy, S. C

“…New observations of the vertically integrated CO2 mixing ratio, ⟨CO2⟩, from ground-based remote sensing show that variations in CO2⟩ are primarily determined…”
Get full text

Sensitivity of ozone to bromine in the lower stratosphere by Salawitch, R. J., Weisenstein, D. K., Kovalenko, L. J., Sioris, C. E., Wennberg, P. O., Chance, K., Ko, M. K. W., McLinden, C. A.

“…Measurements of BrO suggest that inorganic bromine (Br(sub y)) at and above the tropopause is 4 to 8 ppt greater than assumed in models used in past ozone…”
Get full text

The Orbiting Carbon Observatory (OCO) mission by Crisp, D, Atlas, R.M, Breon, F.-M, Brown, L.R, Burrows, J.P, Ciais, P, Connor, B.J, Doney, S.C, Fung, I.Y, Jacob, D.J, Miller, C.E, O'Brien, D, Pawson, S, Randerson, J.T, Rayner, P, Salawitch, R.J, Sander, S.P, Sen, B, Stephens, G.L, Tans, P.P, Toon, G.C, Wennberg, P.O, Wofsy, S.C, Yung, Y.L, Kuang, Z, Chudasama, B, Sprague, G, Weiss, B, Pollock, R, Kenyon, D, Schroll, S

“…The Orbiting Carbon Observatory (OCO) mission will make the first global, space-based measurements of atmospheric carbon dioxide (CO 2) with the precision,…”
Get full text

New constraints on Northern Hemisphere growing season net flux by Yang, Z., Washenfelder, R. A., Keppel‐Aleks, G., Krakauer, N. Y., Randerson, J. T., Tans, P. P., Sweeney, C., Wennberg, P. O.

“…Observations of the column‐averaged dry molar mixing ratio of CO2 above both Park Falls, Wisconsin and Kitt Peak, Arizona, together with partial columns…”
Get full text

Atmospheric chemistry Radicals follow the Sun by Wennberg, Paul O

“…Hydroxyl free radicals are part of a complex network of atmospheric chemical reactions. But a long-term study shows that their concentration can be predicted…”
Get full text