Search Results - "Schichtel, B"

Seasonal composition of remote and urban fine particulate matter in the United States by Hand, J. L., Schichtel, B. A., Pitchford, M., Malm, W. C., Frank, N. H.

“…Speciated aerosol composition data from the rural Interagency Monitoring for Protected Visual Environments (IMPROVE) network and the Environmental Protection…”
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How emissions, climate, and land use change will impact mid-century air quality over the United States: a focus on effects at national parks by Martin, M Val, Heald, C L, Lamarque, J-F, Tilmes, S, Emmons, L K, Schichtel, B A

“…We use a global coupled chemistry–climate–land model (CESM) to assess the integrated effect of climate, emissions and land use changes on annual surface O3 and…”
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Spatial and seasonal variability in fine mineral dust and coarse aerosol mass at remote sites across the United States by Hand, J. L., Gill, T. E., Schichtel, B. A.

“…Understanding the spatial and temporal variability in fine mineral dust (FD, mineral aerosols with diameters less than 2.5 µm) and coarse aerosol mass (CM,…”
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Particulate sulfate ion concentration and SO2 emission trends in the United States from the early 1990s through 2010 by Hand, J L, Schichtel, B A, Malm, W C, Pitchford, M L

“…We examined particulate sulfate ion concentrations across the United States from the early 1990s through 2010 using remote/rural data from the Interagency…”
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Earlier onset of the spring fine dust season in the southwestern United States by Hand, J. L., White, W. H., Gebhart, K. A., Hyslop, N. P., Gill, T. E., Schichtel, B. A.

“…Particulate matter (PM)2.5 dust concentrations (mineral particles with aerodynamic diameters less than 2.5 µm) typically peak in spring and early summer at…”
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Oil and gas impacts on air quality in federal lands in the Bakken region: an overview of the Bakken Air Quality Study and first results by Prenni, A. J, Day, D. E, Evanoski-Cole, A. R, Sive, B. C, Hecobian, A, Zhou, Y, Gebhart, K. A, Hand, J. L, Sullivan, A. P, Li, Y, Schurman, M. I, Desyaterik, Y, Malm, W. C, Collett Jr., J. L, Schichtel, B. A

“…The Bakken formation contains billions of barrels of oil and gas trapped in rock and shale. Horizontal drilling and hydraulic fracturing methods have allowed…”
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Widespread reductions in haze across the United States from the early 1990s through 2011 by Hand, J.L., Schichtel, B.A., Malm, W.C., Copeland, S., Molenar, J.V., Frank, N., Pitchford, M.

“…Visibility has improved significantly at many remote areas across the United States since the early 1990s. Trends in visibility were calculated using ambient…”
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Chemical and physical transformations of organic aerosol from the photo-oxidation of open biomass burning emissions in an environmental chamber by Hennigan, C. J., Miracolo, M. A., Engelhart, G. J., May, A. A., Presto, A. A., Lee, T., Sullivan, A. P., McMeeking, G. R., Coe, H., Wold, C. E., Hao, W.-M., Gilman, J. B., Kuster, W. C., de Gouw, J., Schichtel, B. A., Collett, J. L., Kreidenweis, S. M., Robinson, A. L.

“…Smog chamber experiments were conducted to investigate the chemical and physical transformations of organic aerosol (OA) during photo-oxidation of open biomass…”
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Present and future nitrogen deposition to national parks in the United States: critical load exceedances by Ellis, R. A, Jacob, D. J, Sulprizio, M. P, Zhang, L, Holmes, C. D, Schichtel, B. A, Blett, T, Porter, E, Pardo, L. H, Lynch, J. A

“…National parks in the United States are protected areas wherein the natural habitat is to be conserved for future generations. Deposition of anthropogenic…”
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Decreases in elemental carbon and fine particle mass in the United States by Murphy, D. M., Chow, J. C., Leibensperger, E. M., Malm, W. C., Pitchford, M., Schichtel, B. A., Watson, J. G., White, W. H.

“…Observations at national parks and other remote sites show that average elemental carbon and fine particle mass concentrations in the United States both…”
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Trends in Seasonal Mean Speciated Aerosol Composition in Remote Areas of the United States From 2000 Through 2021 by Hand, J. L., Prenni, A. J., Schichtel, B. A.

“…Large reductions in anthropogenic emissions of particulate matter and its precursor emissions have occurred since the enactment of the Clean Air Act Amendments…”
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Aerosol decadal trends – Part 1: In-situ optical measurements at GAW and IMPROVE stations by Collaud Coen, M., Andrews, E., Asmi, A., Baltensperger, U., Bukowiecki, N., Day, D., Fiebig, M., Fjaeraa, A. M., Flentje, H., Hyvärinen, A., Jefferson, A., Jennings, S. G., Kouvarakis, G., Lihavainen, H., Lund Myhre, C., Malm, W. C., Mihapopoulos, N., Molenar, J. V., O'Dowd, C., Ogren, J. A., Schichtel, B. A., Sheridan, P., Virkkula, A., Weingartner, E., Weller, R., Laj, P.

“…Currently many ground-based atmospheric stations include in-situ measurements of aerosol physical and optical properties, resulting in more than 20 long-term…”
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Sources of nitrogen deposition in Federal Class I areas in the US by H-M, Lee, Paulot, F, Henze, D K, Travis, K, Jacob, D J, Pardo, L H, Schichtel, B A

“…It is desired to control excessive reactive nitrogen (Nr) deposition due to its detrimental impact on ecosystems. Using a three-dimensional atmospheric…”
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A seasonal nitrogen deposition budget for Rocky Mountain National Park by Benedict, K. B, Carrico, C. M, Kreidenweis, S. M, Schichtel, B, Malm, W. C, Collett, J. L

“…Nitrogen deposition is a concern in many protected ecosystems around the world, yet few studies have quantified a complete reactive nitrogen deposition budget…”
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Implications of Organic Mass to Carbon Ratios Increasing Over Time in the Rural United States by Malm, W. C., Schichtel, B. A., Hand, J. L., Prenni, A. J.

“…The thermal evolution procedure used by most monitoring programs in the United States to determine carbonaceous aerosol concentrations is referred to as the…”
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Investigating types and sources of organic aerosol in Rocky Mountain National Park using aerosol mass spectrometry by Schurman, M. I, Lee, T, Sun, Y, Schichtel, B. A, Kreidenweis, S. M, Collett Jr., J. L

“…The environmental impacts of atmospheric particles are highlighted in remote areas where visibility and ecosystem health can be degraded by even relatively low…”
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Spatial and temporal variability of ammonia and other inorganic aerosol species by Day, D.E., Chen, X., Gebhart, K.A., Carrico, C.M., Schwandner, F.M., Benedict, K.B., Schichtel, B.A., Collett, J.L.

“…Nitrogen deposition to the sensitive ecosystems in Rocky Mountain National Park (RMNP) has been increasing. Ammonia has been shown to be a large fraction of…”
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Consistency of long-term elemental carbon trends from thermal and optical measurements in the IMPROVE network by Chen, L.-W. A, Chow, J. C, Watson, J. G, Schichtel, B. A

“…Decreasing trends of elemental carbon (EC) have been reported at US Interagency Monitoring of PROtected Visual Environments (IMPROVE) network from 1990 to…”
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Asian dust events of April 1998 by Husar, R. B., Tratt, D. M., Schichtel, B. A., Falke, S. R., Li, F., Jaffe, D., Gassó, S., Gill, T., Laulainen, N. S., Lu, F., Reheis, M. C., Chun, Y., Westphal, D., Holben, B. N., Gueymard, C., McKendry, I., Kuring, N., Feldman, G. C., McClain, C., Frouin, R. J., Merrill, J., DuBois, D., Vignola, F., Murayama, T., Nickovic, S., Wilson, W. E., Sassen, K., Sugimoto, N., Malm, W. C.

“…On April 15 and 19, 1998, two intense dust storms were generated over the Gobi desert by springtime low‐pressure systems descending from the northwest. The…”
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Increasing trends in wintertime particulate sulfate and nitrate ion concentrations in the Great Plains of the United States (2000–2010) by Hand, J.L., Gebhart, K.A., Schichtel, B.A., Malm, W.C.

“…Trends in wintertime particulate sulfate ion and nitrate ion concentrations were computed for 2000–2010 using data from remote and rural sites across the…”
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