Search Results - "Owen, R. C"

Molecular characterization of free tropospheric aerosol collected at the Pico Mountain Observatory: a case study with a long-range transported biomass burning plume by Dzepina, K, Mazzoleni, C, Fialho, P, China, S, Zhang, B, Owen, R. C, Helmig, D, Hueber, J, Kumar, S, Perlinger, J. A, Kramer, L. J, Dziobak, M. P, Ampadu, M. T, Olsen, S, Wuebbles, D. J, Mazzoleni, L. R

“…Free tropospheric aerosol was sampled at the Pico Mountain Observatory located at 2225 m above mean sea level on Pico Island of the Azores archipelago in the…”
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Significant enhancements of nitrogen oxides, black carbon, and ozone in the North Atlantic lower free troposphere resulting from North American boreal wildfires by Val Martín, M., Honrath, R. E., Owen, R. C., Pfister, G., Fialho, P., Barata, F.

“…Extensive wildfires burned in northern North America during summer 2004, releasing large amounts of trace gases and aerosols into the atmosphere. Emissions…”
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The influence of boreal biomass burning emissions on the distribution of tropospheric ozone over North America and the North Atlantic during 2010 by Parrington, M, Palmer, P. I, Henze, D. K, Tarasick, D. W, Hyer, E. J, Owen, R. C, Helmig, D, Clerbaux, C, Bowman, K. W, Deeter, M. N, Barratt, E. M, Coheur, P.-F, Hurtmans, D, Jiang, Z, George, M, Worden, J. R

“…We have analysed the sensitivity of the tropospheric ozone distribution over North America and the North Atlantic to boreal biomass burning emissions during…”
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A semi-Lagrangian view of ozone production tendency in North American outflow in the summers of 2009 and 2010 by Zhang, B, Owen, R. C, Perlinger, J. A, Kumar, A, Wu, S, Val Martin, M, Kramer, L, Helmig, D, Honrath, R. E

“…The Pico Mountain Observatory, located at 2225 m a.s.l. in the Azores Islands, was established in 2001 to observe long-range transport from North America to…”
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An analysis of the mechanisms of North American pollutant transport to the central North Atlantic lower free troposphere by Owen, R. C., Cooper, O. R., Stohl, A., Honrath, R. E.

“…We use the FLEXPART Lagrangian particle dispersion model and observations from the PICO‐NARE station to identify and analyze the transport of North American…”
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Regional and hemispheric impacts of anthropogenic and biomass burning emissions on summertime CO and O3 in the North Atlantic lower free troposphere by Honrath, R. E., Owen, R. C., Val Martín, M., Reid, J. S., Lapina, K., Fialho, P., Dziobak, M. P., Kleissl, J., Westphal, D. L.

“…We report summertime measurements of CO and O3 obtained during 2001–2003 at the PICO‐NARE mountaintop station in the Azores. Frequent events of elevated CO…”
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Free-troposphere ozone and carbon monoxide over the North Atlantic for 2001–2011 by Kumar, A, Wu, S, Weise, M. F, Honrath, R, Owen, R. C, Helmig, D, Kramer, L, Val Martin, M, Li, Q

“…In situ measurements of carbon monoxide (CO) and ozone (O3) at the Pico Mountain Observatory (PMO) located in the Azores, Portugal, are analyzed together with…”
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Nonmethane hydrocarbons at Pico Mountain, Azores: 1. Oxidation chemistry in the North Atlantic region by Helmig, D., Tanner, D. M., Honrath, R. E., Owen, R. C., Parrish, D. D.

“…Measurements of nonmethane hydrocarbons (NMHC) at the Pico Mountain observatory at 2225 m asl on Pico Island, Azores, Portugal, from August 2004 to August 2005…”
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Evidence of significant large-scale impacts of boreal fires on ozone levels in the midlatitude Northern Hemisphere free troposphere by Lapina, K., Honrath, R. E., Owen, R. C., Val Martín, M., Pfister, G.

“…Summertime observations of O3 and CO made at the PICO‐NARE station during 2001, 2003, and 2004 are used to assess the impact of boreal forest fires on the…”
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Ozone production from the 2004 North American boreal fires by Pfister, G. G., Emmons, L. K., Hess, P. G., Honrath, R., Lamarque, J.-F., Val Martin, M., Owen, R. C., Avery, M. A., Browell, E. V., Holloway, J. S., Nedelec, P., Purvis, R., Ryerson, T. B., Sachse, G. W., Schlager, H.

“…We examine the ozone production from boreal forest fires based on a case study of wildfires in Alaska and Canada in summer 2004. The model simulations were…”
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Seasonal variation of nitrogen oxides in the central North Atlantic lower free troposphere by Val Martin, M., Honrath, R. E., Owen, R. C., Li, Q. B.

“…Measurements of NO, NO2, and NOy (total reactive nitrogen oxides) made at the Pico Mountain station, 38.47°N, 28.40°W, 2.2 km above sea level, from July 2002…”
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Effect of emissions inventory versus climate model resolution on radiative forcing and precipitation over the continental United States by Owen, R. C., Steiner, A. L.

“…We evaluate the impact of anthropogenic emission inventory and climate model grid resolution on aerosol concentrations and black direct aerosol top of…”
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Large-scale impacts of anthropogenic pollution and boreal wildfires on the nitrogen oxides over the central North Atlantic region by Val Martin, M., Honrath, R. E., Owen, R. C., Lapina, K.

“…Transport of North American anthropogenic and boreal wildfire emissions is a large source of nitrogen oxides over the North Atlantic region. To characterize…”
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Late summer changes in burning conditions in the boreal regions and their implications for NOx and CO emissions from boreal fires by Lapina, K., Honrath, R. E., Owen, R. C., Val Martín, M., Hyer, E. J., Fialho, P.

“…Building emission inventories for the fires in boreal regions remains a challenging task with significant uncertainties in the methods used. In this work, we…”
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Technical note: a new method for the Lagrangian tracking of pollution plumes from source to receptor using gridded model output by Owen, R. C., Honrath, R. E.

“…Lagrangian particle dispersion models (LPDMs) are powerful and popular tools used for the analysis of atmospheric trace gas measurements. However, it can be…”
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Occurrence of upslope flows at the Pico mountaintop observatory: A case study of orographic flows on a small, volcanic island by Kleissl, J., Honrath, R. E., Dziobak, M. P., Tanner, D., Val Martín, M., Owen, R. C., Helmig, D.

“…Upslope flows caused by mechanical forcing in strong synoptic winds or by buoyant forcing driven by solar heating under weak synoptic winds can influence the…”
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Ten-year chemical signatures associated with long-range transport observed in the free troposphere over the central North Atlantic by Zhang, B., Owen, R. C., Perlinger, J. A., Helmig, D., Val Martín, M., Kramer, L., Mazzoleni, L. R., Mazzoleni, C.

“…Ten-year observations of trace gases at Pico Mountain Observatory (PMO), a free troposphere site in the central North Atlantic, were classified by transport…”
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Nonmethane hydrocarbons at Pico Mountain, Azores: 2. Event-specific analyses of the impacts of mixing and photochemistry on hydrocarbon ratios by Honrath, R. E., Helmig, D., Owen, R. C., Parrish, D. D., Tanner, D. M.

“…Nonmethane hydrocarbon (NMHC) measurements at Pico Mountain observatory are analyzed in combination with FLEXPART transport simulations. The results are used…”
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Factors associated with NO2 and NOX concentration gradients near a highway by Richmond-Bryant, J., Snyder, M.G., Owen, R.C., Kimbrough, S.

“…The objective of this research is to learn how the near-road gradient, in which NO2 and NOX (NO + NO2) concentrations are elevated, varies with changes in…”
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Notes on the Habitat and Adult Behaviour of Three Red-Listed Colophon spp. (Coleoptera: Lucanidae) of the Cape Floristic Region, South Africa by Geertsema, H, Owen, C. R

“…The habitat restrictions of three species of Colophon (C. stokoei, C. neli, C. westwoodi) in the Cape Floristic Province are discussed, together with their…”
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