Search

Your search keyword '"Lanz, V. A."' showing total 39 results
Start Over Author "Lanz, V. A."
39 results on '"Lanz, V. A."'

1. Evolution of Organic Aerosols in the Atmosphere

Author

Jimenez, J. L., Canagaratna, M. R., Donahue, N. M., Prevot, A. S. H., Zhang, Q., Kroll, J. H., DeCarlo, P. F., Allan, J. D., Coe, H., Ng, N. L., Aiken, A. C., Docherty, K. S., Ulbrich, I. M., Grieshop, A. P., Robinson, A. L., Duplissy, J., Smith, J. D., Wilson, K. R., Lanz, V. A., Hueglin, C., Sun, Y. L., Tian, J., Laaksonen, A., Raatikainen, T., Rautiainen, J., Vaattovaara, P., Ehn, M., Kulmala, M., Tomlinson, J. M., Collins, D. R., Cubison, M. J., Dunlea, E. J., Huffman, J. A., Onasch, T. B., Alfarra, M. R., Williams, P. I., Bower, K., Kondo, Y., Schneider, J., Drewnick, F., Borrmann, S., Weimer, S., Demerjian, K., Salcedo, D., Cottrell, L., Griffin, R., Takami, A., Miyoshi, T., Hatakeyama, S., Shimono, A., Sun, J. Y., Zhang, Y. M., Dzepina, K., Kimmel, J. R., Sueper, D., Jayne, J. T., Herndon, S. C., Trimborn, A. M., Williams, L. R., Wood, E. C., Middlebrook, A. M., Kolb, C. E., Baltensperger, U., and Worsnop, D. R.

Published
2009
Full Text
View/download PDF

2. Factor analytical modeling of C2?C7 hydrocarbon sources at an urban background site in Zurich (Switzerland): changes between 1993?1994 and 2005?2006

Author

Lanz, V. A., Buchmann, B., Hueglin, C., Locher, R., Reimann, S., Staehelin, J., EMPA, Swiss Federal Laboratories for Materials Testing and Research, Institute of Data Analysis and Process Design (IDP), ZHAW School of Engineering, Zürich University of Applied Sciences (ZHAW)-Zürich University of Applied Sciences (ZHAW), Institute for Atmospheric and Climate Science [Zürich] (IAC), Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), and EGU, Publication

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere
Abstract

International audience; Hourly measurements of 13 volatile hydrocarbons (C2?C7) were performed at an urban background site in Zurich (Switzerland) in the years 1993?1994 and again in 2005?2006. Changes in hydrocarbon profiles and source strengths were recovered by positive matrix factorization (PMF). Eight and six factors could be related to hydrocarbon sources in 1993?1994 and in 2005?2006, respectively. The modeled source profiles were verified by hydrocarbon profiles reported in the literature. The source strengths were validated by independent measurements, such as inorganic trace gases (NOx, CO, SO2), methane (CH4), oxidized hydrocarbons (OVOCs) and meteorological data (temperature, wind speed etc.). Our analysis suggests that the contribution of most hydrocarbon sources (i.e. road traffic, solvents use, and wood burning) decreased by a factor of about two to three between the early 1990s and 2005?2006. On the other hand, hydrocarbon losses from natural gas leakage remained at relatively constant (?20%) concentration levels. The estimated emission trends are in line with the results from different top-down approaches reported for other European cities. Their discrepancies to national emission inventories are discussed.

Published
2008

3. Receptor modeling of C2?C7 hydrocarbon sources at an urban background site in Zurich, Switzerland: changes between 1993?1994 and 2005?2006

Author

Lanz, V. A., Hueglin, C., Buchmann, B., Hill, M., Locher, R., Staehelin, J., Reimann, S., EGU, Publication, EMPA, Swiss Federal Laboratories for Materials Testing and Research, Institute of Data Analysis and Process Design (IDP), ZHAW School of Engineering, Zürich University of Applied Sciences (ZHAW)-Zürich University of Applied Sciences (ZHAW), Institute for Atmospheric and Climate Science [Zürich] (IAC), and Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich)

Subjects
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere, [SDU.OCEAN] Sciences of the Universe [physics]/Ocean, Atmosphere
Abstract

International audience; Hourly measurements of 13 volatile hydrocarbons (C2?C7) were performed at an urban background site in Zurich (Switzerland) in the years 1993?1994 and again in 2005?2006. For the separation of the volatile organic compounds by gas-chromatography (GC), an identical chromatographic column was used in both campaigns. Changes in hydrocarbon profiles and source strengths were recovered by positive matrix factorization (PMF). Eight and six factors could be related to hydrocarbon sources in 1993?1994 and in 2005?2006, respectively. The modeled source profiles were verified by hydrocarbon profiles reported in the literature. The source strengths were validated by independent measurements, such as inorganic trace gases (NOx, CO, SO2), methane (CH4), oxidized hydrocarbons (OVOCs) and meteorological data (temperature, wind speed etc.). Our analysis suggests that the contribution of most hydrocarbon sources (i.e. road traffic, solvents use and wood burning) decreased by a factor of about two to three between the early 1990s and 2005?2006. On the other hand, hydrocarbon losses from natural gas leakage remained at relatively constant levels (?20%). The estimated emission trends are in line with the results from different receptor-based approaches reported for other European cities. Their differences to national emission inventories are discussed.

Published
2008

4. Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach

Author

Crippa, M., primary, Canonaco, F., additional, Lanz, V. A., additional, Äijälä, M., additional, Allan, J. D., additional, Carbone, S., additional, Capes, G., additional, Ceburnis, D., additional, Dall'Osto, M., additional, Day, D. A., additional, DeCarlo, P. F., additional, Ehn, M., additional, Eriksson, A., additional, Freney, E., additional, Hildebrandt Ruiz, L., additional, Hillamo, R., additional, Jimenez, J. L., additional, Junninen, H., additional, Kiendler-Scharr, A., additional, Kortelainen, A.-M., additional, Kulmala, M., additional, Laaksonen, A., additional, Mensah, A. A., additional, Mohr, C., additional, Nemitz, E., additional, O'Dowd, C., additional, Ovadnevaite, J., additional, Pandis, S. N., additional, Petäjä, T., additional, Poulain, L., additional, Saarikoski, S., additional, Sellegri, K., additional, Swietlicki, E., additional, Tiitta, P., additional, Worsnop, D. R., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2014
Full Text
View/download PDF

5. Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry

Author

Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Kroll, Jesse, Ng, N. L., Canagaratna, M. R., Zhang, Q., Jimenez, J. L., Tian, J., Docherty, K. S., Chhabra, P. S., Bahreini, Roya, Murphy, S. M., Seinfeld, J. H., Hildebrandt, L., Donahue, Neil M., DeCarlo, P. F., Lanz, V. A., Prevot, A. S. H., Dinar, E., Rudich, Y., Worsnop, D. R., Massachusetts Institute of Technology. Department of Civil and Environmental Engineering, Kroll, Jesse, Ng, N. L., Canagaratna, M. R., Zhang, Q., Jimenez, J. L., Tian, J., Docherty, K. S., Chhabra, P. S., Bahreini, Roya, Murphy, S. M., Seinfeld, J. H., Hildebrandt, L., Donahue, Neil M., DeCarlo, P. F., Lanz, V. A., Prevot, A. S. H., Dinar, E., Rudich, Y., and Worsnop, D. R.

Abstract

In this study we compile and present results from the factor analysis of 43 Aerosol Mass Spectrometer (AMS) datasets (27 of the datasets are reanalyzed in this work). The components from all sites, when taken together, provide a holistic overview of Northern Hemisphere organic aerosol (OA) and its evolution in the atmosphere. At most sites, the OA can be separated into oxygenated OA (OOA), hydrocarbon-like OA (HOA), and sometimes other components such as biomass burning OA (BBOA). We focus on the OOA components in this work. In many analyses, the OOA can be further deconvolved into low-volatility OOA (LV-OOA) and semi-volatile OOA (SV-OOA). Differences in the mass spectra of these components are characterized in terms of the two main ions m/z 44 (CO2+) and m/z 43 (mostly C2H3O+), which are used to develop a new mass spectral diagnostic for following the aging of OA components in the atmosphere. The LV-OOA component spectra have higher f44 (ratio of m/z 44 to total signal in the component mass spectrum) and lower f43 (ratio of m/z 43 to total signal in the component mass spectrum) than SV-OOA. A wide range of f44 and O:C ratios are observed for both LV-OOA (0.17±0.04, 0.73±0.14) and SV-OOA (0.07±0.04, 0.35±0.14) components, reflecting the fact that there is a continuum of OOA properties in ambient aerosol. The OOA components (OOA, LV-OOA, and SV-OOA) from all sites cluster within a well-defined triangular region in the f44 vs.\ f43 space, which can be used as a standardized means for comparing and characterizing any OOA components (laboratory or ambient) observed with the AMS. Examination of the OOA components in this triangular space indicates that OOA component spectra become increasingly similar to each other and to fulvic acid and HULIS sample spectra as f44 (a surrogate for O:C and an indicator of photochemical aging) increases. This indicates that ambient OA converges towards highly aged LV-OOA with atmospheric oxidation. The common features of the transformati, United States-Israel Binational Science Foundation (BSF grant #2008146), United States. National Aeronautics and Space Administration (NOAA NA08OAR4310565), National Science Foundation (U.S.) (NSF ATM-0919189), United States. Dept. of Energy (DOE DEFG0208ER64627), United States. Dept. of Energy. Office of Science (Grant no. DEFG02-08ER64627)

Published
2012

6. General overview : European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) - integrating aerosol research from nano to global scales

Author

Kulmala, M., Asmi, A., Lappalainen, H. K., Baltensperger, U., Brenguier, J. -L, Facchini, M. C., Hansson, H. -C, Hov, O., O'Dowd, C. D., Poeschl, U., Wiedensohler, A., Boers, R., Boucher, O., de Leeuw, G., van der Gon, H. A. C. Denier, Feichter, J., Krejci, R., Laj, P., Lihavainen, H., Lohmann, U., McFiggans, G., Mentel, T., Pilinis, C., Riipinen, I., Schulz, M., Stohl, A., Swietlicki, E., Vignati, E., Alves, C., Amann, M., Ammann, M., Arabas, S., Artaxo, P., Baars, H., Beddows, D. C. S., Bergström, Robert, Beukes, J. P., Bilde, M., Burkhart, J. F., Canonaco, F., Clegg, S. L., Coe, H., Crumeyrolle, S., D'Anna, B., Decesari, S., Gilardoni, S., Fischer, M., Fjaeraa, A. M., Fountoukis, C., George, C., Gomes, L., Halloran, P., Hamburger, T., Harrison, R. M., Herrmann, H., Hoffmann, T., Hoose, C., Hu, M., Hyvarinen, A., Horrak, U., Iinuma, Y., Iversen, T., Josipovic, M., Kanakidou, M., Kiendler-Scharr, A., Kirkevag, A., Kiss, G., Klimont, Z., Kolmonen, P., Komppula, M., Kristjansson, J. -E, Laakso, L., Laaksonen, A., Labonnote, L., Lanz, V. A., Lehtinen, K. E. J., Rizzo, L. V., Makkonen, R., Manninen, H. E., McMeeking, G., Merikanto, J., Minikin, A., Mirme, S., Morgan, W. T., Nemitz, E., O'Donnell, D., Panwar, T. S., Pawlowska, H., Petzold, A., Pienaar, J. J., Pio, C., Plass-Duelmer, C., Prevot, A. S. H., Pryor, S., Reddington, C. L., Roberts, G., Rosenfeld, D., Schwarz, J., Seland, O., Sellegri, K., Shen, X. J., Shiraiwa, M., Siebert, H., Sierau, B., Simpson, D., Sun, J. Y., Topping, D., Tunved, P., Vaattovaara, P., Vakkari, V., Veefkind, J. P., Visschedijk, A., Vuollekoski, H., Vuolo, R., Wehner, B., Wildt, J., Woodward, S., Worsnop, D. R., van Zadelhoff, G. -J, Zardini, A. A., Zhang, K., van Zyl, P. G., Kerminen, V. -M, Carslaw, K. S., Pandis, S. N., Kulmala, M., Asmi, A., Lappalainen, H. K., Baltensperger, U., Brenguier, J. -L, Facchini, M. C., Hansson, H. -C, Hov, O., O'Dowd, C. D., Poeschl, U., Wiedensohler, A., Boers, R., Boucher, O., de Leeuw, G., van der Gon, H. A. C. Denier, Feichter, J., Krejci, R., Laj, P., Lihavainen, H., Lohmann, U., McFiggans, G., Mentel, T., Pilinis, C., Riipinen, I., Schulz, M., Stohl, A., Swietlicki, E., Vignati, E., Alves, C., Amann, M., Ammann, M., Arabas, S., Artaxo, P., Baars, H., Beddows, D. C. S., Bergström, Robert, Beukes, J. P., Bilde, M., Burkhart, J. F., Canonaco, F., Clegg, S. L., Coe, H., Crumeyrolle, S., D'Anna, B., Decesari, S., Gilardoni, S., Fischer, M., Fjaeraa, A. M., Fountoukis, C., George, C., Gomes, L., Halloran, P., Hamburger, T., Harrison, R. M., Herrmann, H., Hoffmann, T., Hoose, C., Hu, M., Hyvarinen, A., Horrak, U., Iinuma, Y., Iversen, T., Josipovic, M., Kanakidou, M., Kiendler-Scharr, A., Kirkevag, A., Kiss, G., Klimont, Z., Kolmonen, P., Komppula, M., Kristjansson, J. -E, Laakso, L., Laaksonen, A., Labonnote, L., Lanz, V. A., Lehtinen, K. E. J., Rizzo, L. V., Makkonen, R., Manninen, H. E., McMeeking, G., Merikanto, J., Minikin, A., Mirme, S., Morgan, W. T., Nemitz, E., O'Donnell, D., Panwar, T. S., Pawlowska, H., Petzold, A., Pienaar, J. J., Pio, C., Plass-Duelmer, C., Prevot, A. S. H., Pryor, S., Reddington, C. L., Roberts, G., Rosenfeld, D., Schwarz, J., Seland, O., Sellegri, K., Shen, X. J., Shiraiwa, M., Siebert, H., Sierau, B., Simpson, D., Sun, J. Y., Topping, D., Tunved, P., Vaattovaara, P., Vakkari, V., Veefkind, J. P., Visschedijk, A., Vuollekoski, H., Vuolo, R., Wehner, B., Wildt, J., Woodward, S., Worsnop, D. R., van Zadelhoff, G. -J, Zardini, A. A., Zhang, K., van Zyl, P. G., Kerminen, V. -M, Carslaw, K. S., and Pandis, S. N.

Published
2011
Full Text
View/download PDF

7. Organic aerosol components derived from 25 AMS datasets across Europe using a newly developed ME-2 based source apportionment strategy

Author

Crippa, M., primary, Canonaco, F., additional, Lanz, V. A., additional, Äijälä, M., additional, Allan, J. D., additional, Carbone, S., additional, Capes, G., additional, Dall'Osto, M., additional, Day, D. A., additional, DeCarlo, P. F., additional, Di Marco, C. F., additional, Ehn, M., additional, Eriksson, A., additional, Freney, E., additional, Hildebrandt Ruiz, L., additional, Hillamo, R., additional, Jimenez, J.-L., additional, Junninen, H., additional, Kiendler-Scharr, A., additional, Kortelainen, A.-M., additional, Kulmala, M., additional, Mensah, A. A., additional, Mohr, C., additional, Nemitz, E., additional, O'Dowd, C., additional, Ovadnevaite, J., additional, Pandis, S. N., additional, Petäjä, T., additional, Poulain, L., additional, Saarikoski, S., additional, Sellegri, K., additional, Swietlicki, E., additional, Tiitta, P., additional, Worsnop, D. R., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2013
Full Text
View/download PDF

8. Supplementary material to "Organic aerosol components derived from 25 AMS datasets across Europe using a newly developed ME-2 based source apportionment strategy"

Author

Crippa, M., primary, Canonaco, F., additional, Lanz, V. A., additional, Äijälä, M., additional, Allan, J. D., additional, Carbone, S., additional, Capes, G., additional, Dall'Osto, M., additional, Day, D. A., additional, DeCarlo, P. F., additional, Di Marco, C. F., additional, Ehn, M., additional, Eriksson, A., additional, Freney, E., additional, Hildebrandt Ruiz, L., additional, Hillamo, R., additional, Jimenez, J.-L., additional, Junninen, H., additional, Kiendler-Scharr, A., additional, Kortelainen, A.-M., additional, Kulmala, M., additional, Mensah, A. A., additional, Mohr, C., additional, Nemitz, E., additional, O'Dowd, C., additional, Ovadnevaite, J., additional, Pandis, S. N., additional, Petäjä, T., additional, Poulain, L., additional, Saarikoski, S., additional, Sellegri, K., additional, Swietlicki, E., additional, Tiitta, P., additional, Worsnop, D. R., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2013
Full Text
View/download PDF

9. General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales

Author

Kulmala, M., primary, Asmi, A., additional, Lappalainen, H. K., additional, Baltensperger, U., additional, Brenguier, J.-L., additional, Facchini, M. C., additional, Hansson, H.-C., additional, Hov, Ø., additional, O'Dowd, C. D., additional, Pöschl, U., additional, Wiedensohler, A., additional, Boers, R., additional, Boucher, O., additional, de Leeuw, G., additional, Denier van der Gon, H. A. C., additional, Feichter, J., additional, Krejci, R., additional, Laj, P., additional, Lihavainen, H., additional, Lohmann, U., additional, McFiggans, G., additional, Mentel, T., additional, Pilinis, C., additional, Riipinen, I., additional, Schulz, M., additional, Stohl, A., additional, Swietlicki, E., additional, Vignati, E., additional, Alves, C., additional, Amann, M., additional, Ammann, M., additional, Arabas, S., additional, Artaxo, P., additional, Baars, H., additional, Beddows, D. C. S., additional, Bergström, R., additional, Beukes, J. P., additional, Bilde, M., additional, Burkhart, J. F., additional, Canonaco, F., additional, Clegg, S. L., additional, Coe, H., additional, Crumeyrolle, S., additional, D'Anna, B., additional, Decesari, S., additional, Gilardoni, S., additional, Fischer, M., additional, Fjaeraa, A. M., additional, Fountoukis, C., additional, George, C., additional, Gomes, L., additional, Halloran, P., additional, Hamburger, T., additional, Harrison, R. M., additional, Herrmann, H., additional, Hoffmann, T., additional, Hoose, C., additional, Hu, M., additional, Hyvärinen, A., additional, Hõrrak, U., additional, Iinuma, Y., additional, Iversen, T., additional, Josipovic, M., additional, Kanakidou, M., additional, Kiendler-Scharr, A., additional, Kirkevåg, A., additional, Kiss, G., additional, Klimont, Z., additional, Kolmonen, P., additional, Komppula, M., additional, Kristjánsson, J.-E., additional, Laakso, L., additional, Laaksonen, A., additional, Labonnote, L., additional, Lanz, V. A., additional, Lehtinen, K. E. J., additional, Rizzo, L. V., additional, Makkonen, R., additional, Manninen, H. E., additional, McMeeking, G., additional, Merikanto, J., additional, Minikin, A., additional, Mirme, S., additional, Morgan, W. T., additional, Nemitz, E., additional, O'Donnell, D., additional, Panwar, T. S., additional, Pawlowska, H., additional, Petzold, A., additional, Pienaar, J. J., additional, Pio, C., additional, Plass-Duelmer, C., additional, Prévôt, A. S. H., additional, Pryor, S., additional, Reddington, C. L., additional, Roberts, G., additional, Rosenfeld, D., additional, Schwarz, J., additional, Seland, Ø., additional, Sellegri, K., additional, Shen, X. J., additional, Shiraiwa, M., additional, Siebert, H., additional, Sierau, B., additional, Simpson, D., additional, Sun, J. Y., additional, Topping, D., additional, Tunved, P., additional, Vaattovaara, P., additional, Vakkari, V., additional, Veefkind, J. P., additional, Visschedijk, A., additional, Vuollekoski, H., additional, Vuolo, R., additional, Wehner, B., additional, Wildt, J., additional, Woodward, S., additional, Worsnop, D. R., additional, van Zadelhoff, G.-J., additional, Zardini, A. A., additional, Zhang, K., additional, van Zyl, P. G., additional, Kerminen, V.-M., additional, S Carslaw, K., additional, and Pandis, S. N., additional

Published
2011
Full Text
View/download PDF

11. Fossil versus contemporary sources of fine elemental and organic carbonaceous particulate matter during the DAURE campaign in Northeast Spain

Author

Minguillón, M. C., primary, Perron, N., additional, Querol, X., additional, Szidat, S., additional, Fahrni, S. M., additional, Alastuey, A., additional, Jimenez, J. L., additional, Mohr, C., additional, Ortega, A. M., additional, Day, D. A., additional, Lanz, V. A., additional, Wacker, L., additional, Reche, C., additional, Cusack, M., additional, Amato, F., additional, Kiss, G., additional, Hoffer, A., additional, Decesari, S., additional, Moretti, F., additional, Hillamo, R., additional, Teinilä, K., additional, Seco, R., additional, Peñuelas, J., additional, Metzger, A., additional, Schallhart, S., additional, Müller, M., additional, Hansel, A., additional, Burkhart, J. F., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2011
Full Text
View/download PDF

12. Supplementary material to "Fossil versus contemporary sources of fine elemental and organic carbonaceous particulate matter during the DAURE campaign in Northeast Spain"

Author

Minguillón, M. C., primary, Perron, N., additional, Querol, X., additional, Szidat, S., additional, Fahrni, S. M., additional, Alastuey, A., additional, Jimenez, J. L., additional, Mohr, C., additional, Ortega, A. M., additional, Day, D. A., additional, Lanz, V. A., additional, Wacker, L., additional, Reche, C., additional, Cusack, M., additional, Amato, F., additional, Kiss, G., additional, Hoffer, A., additional, Decesari, S., additional, Moretti, F., additional, Hillamo, R., additional, Teinilä, K., additional, Seco, R., additional, Peñuelas, J., additional, Metzger, A., additional, Schallhart, S., additional, Müller, M., additional, Hansel, A., additional, Burkhart, J. F., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2011
Full Text
View/download PDF

14. Characterization of aerosol chemical composition with aerosol mass spectrometry in Central Europe: an overview

Author

Lanz, V. A., primary, Prévôt, A. S. H., additional, Alfarra, M. R., additional, Weimer, S., additional, Mohr, C., additional, DeCarlo, P. F., additional, Gianini, M. F. D., additional, Hueglin, C., additional, Schneider, J., additional, Favez, O., additional, D'Anna, B., additional, George, C., additional, and Baltensperger, U., additional

Published
2010
Full Text
View/download PDF

15. Organic aerosol components observed in Northern Hemispheric datasets from Aerosol Mass Spectrometry

Author

Ng, N. L., primary, Canagaratna, M. R., additional, Zhang, Q., additional, Jimenez, J. L., additional, Tian, J., additional, Ulbrich, I. M., additional, Kroll, J. H., additional, Docherty, K. S., additional, Chhabra, P. S., additional, Bahreini, R., additional, Murphy, S. M., additional, Seinfeld, J. H., additional, Hildebrandt, L., additional, Donahue, N. M., additional, DeCarlo, P. F., additional, Lanz, V. A., additional, Prévôt, A. S. H., additional, Dinar, E., additional, Rudich, Y., additional, and Worsnop, D. R., additional

Published
2010
Full Text
View/download PDF

17. Supplementary material to "Composition and sources of particulate matter in an industrialised Alpine valley"

Author

Perron, N., primary, Sandradewi, J., additional, Alfarra, M. R., additional, Lienemann, P., additional, Gehrig, R., additional, Kasper-Giebl, A., additional, Lanz, V. A., additional, Szidat, S., additional, Ruff, M., additional, Fahrni, S., additional, Wacker, L., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2010
Full Text
View/download PDF

19. Supplementary material to "Organic aerosol components observed in worldwide datasets from aerosol mass spectrometry"

Author

Ng, N. L., primary, Canagaratna, M. R., additional, Zhang, Q., additional, Jimenez, J. L., additional, Tian, J., additional, Ulbrich, I. M., additional, Kroll, J. H., additional, Docherty, K. S., additional, Chhabra, P. S., additional, Bahreini, R., additional, Murphy, S. M., additional, Seinfeld, J. H., additional, Hildebrandt, L., additional, DeCarlo, P. F., additional, Lanz, V. A., additional, Prevot, A. S. H., additional, Dinar, E., additional, Rudich, Y., additional, and Worsnop, D. R., additional

Published
2009
Full Text
View/download PDF

20. Organic aerosol components observed in worldwide datasets from aerosol mass spectrometry

Author

Ng, N. L., primary, Canagaratna, M. R., additional, Zhang, Q., additional, Jimenez, J. L., additional, Tian, J., additional, Ulbrich, I. M., additional, Kroll, J. H., additional, Docherty, K. S., additional, Chhabra, P. S., additional, Bahreini, R., additional, Murphy, S. M., additional, Seinfeld, J. H., additional, Hildebrandt, L., additional, DeCarlo, P. F., additional, Lanz, V. A., additional, Prevot, A. S. H., additional, Dinar, E., additional, Rudich, Y., additional, and Worsnop, D. R., additional

Published
2009
Full Text
View/download PDF

21. Characterization of aerosol chemical composition by aerosol mass spectrometry in Central Europe: an overview

Author

Lanz, V. A., primary, Prévôt, A. S. H., additional, Alfarra, M. R., additional, Mohr, C., additional, DeCarlo, P. F., additional, Weimer, S., additional, Gianini, M. F. D., additional, Hueglin, C., additional, Schneider, J., additional, Favez, O., additional, D'Anna, B., additional, George, C., additional, and Baltensperger, U., additional

Published
2009
Full Text
View/download PDF

22. Supplementary material to "Characterization of aerosol chemical composition by aerosol mass spectrometry in Central Europe: an overview"

Author

Lanz, V. A., primary, Prévôt, A. S. H., additional, Alfarra, M. R., additional, Mohr, C., additional, DeCarlo, P. F., additional, Weimer, S., additional, Gianini, M. F. D., additional, Hueglin, C., additional, Schneider, J., additional, Favez, O., additional, D'Anna, B., additional, George, C., additional, and Baltensperger, U., additional

Published
2009
Full Text
View/download PDF

26. Comparison of several wood smoke markers and source apportionment methods for wood burning particulate mass

Author

Sandradewi, J., primary, Prévôt, A. S. H., additional, Alfarra, M. R., additional, Szidat, S., additional, Wehrli, M. N., additional, Ruff, M., additional, Weimer, S., additional, Lanz, V. A., additional, Weingartner, E., additional, Perron, N., additional, Caseiro, A., additional, Kasper-Giebl, A., additional, Puxbaum, H., additional, Wacker, L., additional, and Baltensperger, U., additional

Published
2008
Full Text
View/download PDF

30. Organic aerosol components derived from 25 AMS datasets across Europe using a newly developed ME-2 based source apportionment strategy.

Author

Crippa, M., Canonaco, F., Lanz, V. A., Äijälä, M., Allan, J. D., Carbone, S., Capes, G., Dall'Osto, M., Day, D. A., DeCarlo, P. F., Di Marco, C. F., Ehn, M., Eriksson, A., Freney, E., Hildebrandt Ruiz, L., Hillamo, R., Jimenez, J.-L., Junninen, H., Kiendler-Scharr, A., and Kortelainen, A.-M.

Abstract

Organic aerosols (OA) represent one of the major constituents of submicron particulate matter (PM1) and comprise a huge variety of compounds emitted by different sources. Three intensive measurement field campaigns to investigate the aerosol chemical composition all over Europe were carried out within the framework of EUCAARI and the intensive campaigns of EMEP during 2008 (May-June and September-October) and 2009 (February-March). In this paper we focus on the identification of the main organic aerosol sources and we propose a standardized methodology to perform source apportionment using positive matrix factorization (PMF) with the multilinear engine (ME-2) on Aerodyne aerosol mass spectrometer (AMS) data. Our source apportionment procedure is tested and applied on 25 datasets accounting for urban, rural, remote and high altitude sites and therefore it is likely suitable for the treatment of AMS-related ambient datasets. For most of the sites, four organic components are retrieved, improving significantly previous source apportionment results where only a separation in primary and secondary OA sources was possible. Our solutions include two primary OA sources, i.e. hydrocarbon-like OA (HOA) and biomass burning OA (BBOA) and two secondary OA components, i.e. semi-volatile oxygenated OA (SV-OOA) and low-volatility oxygenated OA (LV-OOA). For specific sites cooking-related (COA) and marine-related sources (MSA) are also separated. Finally, our work provides a large overview of organic aerosol sources in Europe and an interesting set of highly time resolved data for modeling evaluation purposes. [ABSTRACT FROM AUTHOR]

Published
2013
Full Text
View/download PDF

32. Composition and sources of particulate matter in an industrialised Alpine valley.

Author

Perron, N., Sandradewi, J., Alfarra, M. R., Lienemann, P., Gehrig, R., Kasper-Gieblv, A., Lanz, V. A., Szidat, S., Ruff, M., Fahrni, S., Wacker, L., Baltensperger, U., and H. Prévôt, A. S.

Abstract

A three-week long field campaign was carried out under autumnal meteorological conditions at four valley floor sites in the industrialised Swiss Rhone Valley. For one week of stable meteorological conditions, particulate matter with an aerodynamic diameter below 10 μm (PM10) was analysed from daily filters using ion chromatography, X-ray fluorescence, anhydrosugars and radiocarbon analysis of the organic and elemental matter (OM and EM, respectively). Furthermore, PM1 composition along the whole campaign was monitored in Massongex (a site near industries) by a seven-wavelength aethalometer and a quadrupole aerosol mass spectrometer (Q-AMS). At all sites, PM10 secondary inorganics and non-fossil EM and OM exhibited relatively stable concentrations over the selected days. On the contrary, PM10 fossil carbonaceous fractions, mineral dust components and several trace elements showed a significant decrease on Sunday, compared to the analysed working days. Their concentrations were also highly correlated. This evidenced the role of exhaust and resuspension emissions by heavy-duty vehicle traffic to the PM10 concentrations along the valley. In Massongex, organic matter and black carbon (BC) were the main contributors to PM1 over the campaign (accounting for 45% and 18% of PM1, respectively). An optical discrimination of BC highlighted the prevalence of fossil over wood-burning sources. Three types of PM1 organics could be identified by factor analysis: primary wood-burning organic aerosol (P-WBOA) dominated the PM1 carbonaceous fraction, followed by oxygenated organics (OOA) mostly representing secondary organics, and by traffic or possibly industry-related hydrocarbon-like organics (HOA) as the smallest carbonaceous contribution. Furthermore, unusually high contributions of fine chloride were detected at all sites. They were attributed to ammonium chloride (NH4Cl) in Massongex and represented the only significant component exclusively attributable to industrial emissions. [ABSTRACT FROM AUTHOR]

Published
2010
Full Text
View/download PDF

33. Characterization of aerosol chemical composition by aerosol mass spectrometry in Central Europe: an overview.

Author

Lanz, V. A., H. Prévôt, A. S., Alfarra, M. R., Mohr, C., DeCarlo, P. F., Weimer, S., Gianini, M. F. D., Hueglin, C., Schneider, J., Favez, O., D'Anna, B., George, C., and Baltensperger, U.

Abstract

Real-time measurements of non-refractory submicron aerosols (NR-PM1) were conducted within the greater Alpine region (Switzerland, Germany, Austria, France and Liechtenstein) during several week-long field campaigns in 2002-2009. A large variety of sites was covered including urban backgrounds, motorways, rural, remote, and high-Alpine stations, and also mobile on-road measurements were performed. Inorganic and organic aerosol (OA) fractions were determined by means of aerosol mass spectrometry (AMS). The average mass concentration of NR-PM1 for the different campaigns typically ranged between 10 and 30 μgm-3. Overall, the organic portion was most abundant, ranging from 36% to 81% of NR-PM1. Other main constituents comprised ammonium (5-15%), nitrate (8-36%), sulfate (3-26%), and chloride (0-5%). These latter anions were, on average, fully neutralized by ammonium. The OA was further divided (based on factor analysis, FA) into its underlying components, such as oxygenated (mostly secondary) organic aerosol (OOA), hydrocarbon-like and freshly emitted organic aerosol (HOA), as well as primary OA from biomass burning (P-BBOA). OOA was ubiquitous, ranged between 36% and 94% of OA, and could be separated into a low-volatility and a semi-volatile fraction (LV-OOA and SV-OOA) for all summer campaigns at low sites. Primary wood combustion (P-BBOA) accounted for a considerable fraction during wintertime (17-49% OA). HOA/OA ratios were comparatively low for all campaigns (6-16%) with the exception of on-road, mobile measurements (23%). [ABSTRACT FROM AUTHOR]

Published
2009
Full Text
View/download PDF

34. Receptor modeling of C2-C7 hydrocarbon sources at an urban background site in Zurich, Switzerland: changes between 1993-1994 and 2005-2006.

Author

Lanz, V. A., Hueglin, C., Buchmann, B., Hill, M., Locher, R., Staehelin, J., and Reimann, S.

Subjects
HYDROCARBONS, ORGANIC compounds, NATURAL gas, CHROMATOGRAPHIC analysis
Abstract

Hourly measurements of 13 volatile hydrocarbons (C2–C7) were performed at an urban background site in Zurich (Switzerland) in the years 1993–1994 and again in 2005–2006. For the separation of the volatile organic compounds by gas-chromatography (GC), an identical chromatographic column was used in both campaigns. Changes in hydrocarbon profiles and source strengths were recovered by positive matrix factorization (PMF). Eight and six factors could be related to hydrocarbon sources in 1993–1994 and in 2005–2006, respectively. The modeled source profiles were verified by hydrocarbon profiles reported in the literature. The source strengths were validated by independent measurements, such as inorganic trace gases (NOx, CO, SO2), methane (CH4), oxidized hydrocarbons (OVOCs) and meteorological data (temperature, wind speed etc.). Our analysis suggests that the contribution of most hydrocarbon sources (i.e. road traffic, solvents use and wood burning) decreased by a factor of about two to three between the early 1990s and 2005–2006. On the other hand, hydrocarbon losses from natural gas leakage remained at relatively constant levels (–20%). The estimated emission trends are in line with the results from different receptor-based approaches reported for other European cities. Their differences to national emission inventories are discussed. [ABSTRACT FROM AUTHOR]

Published
2008
Full Text
View/download PDF

35. Buchbesprechungen

Author

Altmann, H. W., Linzbach, Lanz, v., Heberer, Bansi, Gross, Tischendorf, Burger, K., Mesnil, du, Vaternahm, Th., Holzmann, Jordan, P., Hoffmeister, Keller, W., Linder, Kalk, H., v. Kress, H., Kaufmann, C., Heubner, W., Bartelheimer, Mohr, W., Kiese, and Gaubatz

Published
1956
Full Text
View/download PDF

36. Fossil versus contemporary sources of fine elemental and organic carbonaceous particulate matter during the DAURE campaign in Northeast Spain

Author

Perron, N., Alastuey, A., Querol, X., Fahrni, Simon, Penuelas, J., Burkhart, J. F., Mohr, C., Hansel, A., Ortega, A. M., Minguillon, M. C., Muller, M., Day, D. A., Schallhart, S., Jimenez, J. L., Hoffer, A., Prevot, A. S. H., Seco, R., Moretti, F., Szidat, S., Metzger, A., Reche, C., Amato, F., Kiss, G., Lanz, V. A., Wacker, L., Teinila, K., Cusack, M., Baltensperger, U., Decesari, S., and Hillamo, R.

Subjects
13. Climate action, 11. Sustainability, 540 Chemistry, 570 Life sciences, biology
Abstract

We present results from the international field campaign DAURE (Detn. of the sources of atm. Aerosols in Urban and Rural Environments in the Western Mediterranean), with the objective of apportioning the sources of fine carbonaceous aerosols. Submicron fine particulate matter (PM1) samples were collected during Feb.-March 2009 and July 2009 at an urban background site in Barcelona (BCN) and at a forested regional background site in Montseny (MSY). We present radiocarbon (14C) anal. for elemental and org. carbon (EC and OC) and source apportionment for these data. We combine the results with those from component anal. of aerosol mass spectrometer (AMS) measurements, and compare to levoglucosan-based ests. of biomass burning OC, source apportionment of filter data with inorg. compn. + EC + OC, submicron bulk potassium (K) concns., and gaseous acetonitrile concns. At BCN, 87 % and 91 % of the EC on av., in winter and summer, resp., had a fossil origin, whereas at MSY these fractions were 66 % and 79 %. The contribution of fossil sources to org. carbon (OC) at BCN was 40 % and 48 %, in winter and summer, resp., and 31 % and 25 % at MSY. The combination of results obtained using the 14C technique, AMS data, and the correlations between fossil OC and fossil EC imply that the fossil OC at Barcelona is ∼47 % primary whereas at MSY the fossil OC is mainly secondary (∼85 %). Day-to-day variation in total carbonaceous aerosol loading and the relative contributions of different sources predominantly depended on the meteorol. transport conditions. The estd. biogenic secondary OC at MSY only increased by ∼40 % compared to the order-of-magnitude increase obsd. for biogenic volatile org. compds. (VOCs) between winter and summer, which highlights the uncertainties in the estn. of that component. Biomass burning contributions estd. using the 14C technique ranged from similar to slightly higher than when estd. using other techniques, and the different estns. were highly or moderately correlated. Differences can be explained by the contribution of secondary org. matter (not included in the primary biomass burning source ests.), and/or by an over-estn. of the biomass burning OC contribution by the 14C technique if the estd. biomass burning EC/OC ratio used for the calcns. is too high for this region. Acetonitrile concns. correlate well with the biomass burning EC detd. by 14C. K is a noisy tracer for biomass burning. [on SciFinder(R)]

38. Buchbesprechungen

Author

Heilmeyer, Lehnartz, Elze, Lanz, v., Schittenhelm, Assmann, Simon, Kleinschmidt, Schultz, Werner, and Höring

Published
1944
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results