References

ACPD

Atmospheric Chemistry and Physics Discussions

ACPD

1680-7375

Copernicus GmbH

Göttingen, Germany

10.5194/acpd-11-13575-2011

Source apportionment of carbonaceous aerosol in southern Sweden

Genberg

¹ Hyder

² Stenström

¹ Bergström

³ ⁴ Simpson

⁵ ⁶ Fors

¹ Jönsson

J. Å.

² Swietlicki

Department of Physics, Lund University, P.O. Box 118, 22100, Lund, Sweden

Department of Chemistry, Lund University, P.O. Box 124, 22100, Lund, Sweden

Department of Chemistry, University of Gothenburg, 41296, Gothenburg, Sweden

Swedish Meteorological and Hydrological Institute, 60176, Norrköping, Sweden

EMEP MSC-W, Norwegian Meteorological Institute, P.O. Box 43, 0313, Oslo, Norway

Department of Earth & Space Sciences, Chalmers University of Technology, 41296, Gothenburg, Sweden

04 05 2011

11 5 13575 13616

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A one-year study was performed at the Vavihill background station in southern Sweden to estimate the anthropogenic contribution to the carbonaceous aerosol. Weekly samples of the particulate matter PM10 were collected on quartz filters, and the amounts of organic carbon, elemental carbon, radiocarbon (14C) and levoglucosan were measured. This approach enabled source apportionment of the total carbon in the PM10 fraction using the concentration ratios of the sources. The sources considered in this study were emissions from the combustion of fossil fuels and biomass, as well as biogenic sources. During the summer, the carbonaceous aerosol mass was dominated by compounds of biogenic origin (82 %), which are associated with biogenic primary and secondary organic aerosols. During the winter months, biomass combustion (38 %) and fossil fuel combustion (33 %) were the main contributors to the carbonaceous aerosol. Elemental carbon concentrations in winter were about twice as large as during summer, and can be attributed to biomass combustion, probably from domestic wood burning. The contribution of fossil fuels to elemental carbon was stable throughout the year, although the fossil contribution to organic carbon increased during the winter. Thus, the organic aerosol originated mainly from natural sources during the summer and from anthropogenic sources during the winter. The result of this source apportionment was compared with results from the EMEP model. The model and measurements were generally consistent for total atmospheric organic carbon, however, the contribution of the sources varied substantially. E.g. the biomass burning contributions of OC were underestimated by the model by a factor of 8.2 compared to the measurements.

References 1

Andreae, M. O., Rosenfeld, D., Artaxo, P., Costa, A. A., Frank, G. P., Longo, K. M., and Silva-Dias, M. A. F.: Smoking Rain Clouds over the Amazon, Science, 303, 1337–1341, 2004.

Bench, G., Fallon, S., Schichtel, B., Malm, B., and McDade, C.: Relative contributions of fossil and contemporary carbon sources to PM 2.5 aerosols at nine Interagency Monitoring for Protection of VIsual Environments (IMPROVE) network sites, J. Geophys. Res.-Atmos., 112, D10205, http://dx.doi.org/10.1029/2006JD007708doi:10.1029/2006JD007708, 2007.

Bergström, R., Simpson, D., Denier van der Gon, H., Prevot, A., and Yttri, K. E.: Improvements in modelling Secondary Organic Aerosols with the EMEP model: Experiments with the VBS Approach, to be submitted to Atmos. Chem. Phys., 2011.

Birch, M. E. and Cary, R. A.: Elemental carbon-based method for monitoring occupational exposures to particulate diesel exhaust, Aerosol Sci. Technol., 25, 221–241, 1996.

Cachier, H., Bremond, M.-P., and Buat-Ménard, P.: Determination of atmospheric soot carbon with a simple thermal method, Tellus B, 41B, 379–390, http://dx.doi.org/10.1111/j.1600-0889.1989.tb00316.xdoi:10.1111/j.1600-0889.1989.tb00316.x, 1989.

Cavalli, F., Viana, M., Yttri, K. E., Genberg, J., and Putaud, J.-P.: Toward a standardised thermal-optical protocol for measuring atmospheric organic and elemental carbon: the EUSAAR protocol, Atmos. Meas. Tech., 3, 79–89, http://dx.doi.org/10.5194/amt-3-79-2010doi:10.5194/amt-3-79-2010, 2010.

Cheng, Y., He, K. B., Duan, F. K., Zheng, M., Ma, Y. L., and Tan, J. H.: Positive sampling artifact of carbonaceous aerosols and its influence on the thermal-optical split of OC/EC, Atmos. Chem. Phys., 9, 7243–7256, http://dx.doi.org/10.5194/acp-9-7243-2009doi:10.5194/acp-9-7243-2009, 2009.

Crutzen, P. J. and Andreae, M. O.: Biomass Burning in the Tropics: Impact on Atmospheric Chemistry and Biogeochemical Cycles, Science, 250, 1669–1678, http://dx.doi.org/10.1126/science.250.4988.1669doi:10.1126/science.250.4988.1669, 1990.

Dockery, D. W., Pope, C. A., Xu, X., Spengler, J. D., Ware, J. H., Fay, M. E., Ferris, B. G., and Speizer, F. E.: An Association between Air Pollution and Mortality in Six U.S. Cities, New England Journal of Medicine, 329, 1753–1759, http://dx.doi.org/10.1056/NEJM199312093292401doi:10.1056/NEJM199312093292401, 1993.

Donahue, N. M., Robinson, A. L., Stanier, C. O., and Pandis, S. N.: Coupled partitioning, dilution, and chemical aging of semivolatile organics, Environ. Sci. Technol., 40, 2635–2643, http://dx.doi.org/10.1021/es052297cdoi:10.1021/es052297c, 2006.

Engling, G., Carrico, C. M., Kreidenweis, S. M., Collett Jr., J. L., Day, D. E., Malm, W. C., Lincoln, E., Min Hao, W., Iinuma, Y., and Herrmann, H.: Determination of levoglucosan in biomass combustion aerosol by high-performance anion-exchange chromatography with pulsed amperometric detection, Atmos. Environ., 40, 299–311, http://dx.doi.org/10.1016/j.atmosenv.2005.12.069doi:10.1016/j.atmosenv.2005.12.069, 2006.

Fine, P. M., Cass, G. R., and Simoneit, B. R. T.: Chemical characterization of fine particle emissions from fireplace combustion of woods grown in the northeastern United States, Environ. Sci. Technol., 35, 2665–2675, 2001.

Fine, P. M., Cass, G. R., and Simoneit, B. R. T.: Organic compounds in biomass smoke from residential wood combustion: Emissions characterization at a continental scale, J. Geophys. Res.-Atmos., 107, 8349, http://dx.doi.org/10.1029/2001JD000661doi:10.1029/2001JD000661, 2002.

Fine, P. M., Cass, G. R., and Simoneit, B. R. T.: Chemical Characterization of Fine Particle Emissions from the Fireplace Combustion of Wood Types Grown in the Midwestern and Western United States, Environmental Engineering Science, 21, 387–409, 2004a.

Fine, P. M., Cass, G. R., and Simoneit, B. R. T.: Chemical characterization of fine particle emissions from the wood stove combustion of prevalent United States tree species, Environ. Eng. Sci., 21, 705–721, 2004b.

Fraser, M. P. and Lakshmanan, K.: Using levoglucosan as a molecular marker for the long-range transport of biomass combustion aerosols, Environ. Sci. Technol., 34, 4560–4564, 2000.

Fung, K.: Particulate Carbon Speciation by MnO2 Oxidation, Aerosol Sci. Technol., 12, 122–127, 1990.

Gelencsér, A., May, B., Simpson, D., Sánchez-Ochoa, A., Kasper-Giebl, A., Puxbaum, H., Caseiro, A., Pio, C., and Legrand, M.: Source apportionment of PM2.5 organic aerosol over Europe: Primary/secondary, natural/anthropogenic, and fossil/biogenic origin, J. Geophys. Res.-Atmos., 112, 1–12, http://dx.doi.org/10.1029/2006JD008094doi:10.1029/2006JD008094, 2007.

Genberg, J., Stenström, K., Elfman, M., and Olsson, M.: Development of Graphitization of μg-Sized Samples at Lund University, Radiocarbon, 52, 1270–1276, 2010.

Glasius, M., Ketzel, M., Wåhlin, P., Jensen, B., Mønster, J., Berkowicz, R., and Palmgren, F.: Impact of wood combustion on particle levels in a residential area in Denmark, Atmos. Environ., 40, 7115–7124, http://dx.doi.org/10.1016/j.atmosenv.2006.06.047doi:10.1016/j.atmosenv.2006.06.047, 2006.

Guenther, A. B., Zimmerman, P. R., Harley, P. C., Monson, R. K., and Fall, R.: Isoprene and monoterpene rate variability: model evaluations and sensitivity analyses, J. Geophys. Res. Atmos., 98, 12609–12617, 1993.

Gustafsson, Ö., Krusa, M., Zencak, Z., Sheesley, R. J., Granat, L., Engstrom, E., Praveen, P. S., Rao, P. S. P., Leck, C., and Rodhe, H.: Brown Clouds over South Asia: Biomass or Fossil Fuel Combustion?, Science, 323, 495–498, http://dx.doi.org/10.1126/science.1164857doi:10.1126/science.1164857, 2009.

Hedberg Larsson, E., Johansson, C., Johansson, L., Swietlicki, E., and Brorström-Lundén, E.: Is Levoglucosan a Suitable Quantitative Tracer for Wood Burning? - Comparison with Receptor Modeling on Trace Elements in Lycksele, Sweden, in, J. Air Waste Manage., 56(12), 1669–1678, 2006.

Hoffmann, D., Tilgner, A., Iinuma, Y., and Herrmann, H.: Atmospheric Stability of Levoglucosan: A Detailed Laboratory and Modeling Study, Environ. Sci. Technol., 44, 694–699, http://dx.doi.org/10.1021/es902476fdoi:10.1021/es902476f, 2010.

Hsu, C.-L., Cheng, C.-Y., Lee, C.-T., and Ding, W.-H.: Derivatization procedures and determination of levoglucosan and related monosaccharide anhydrides in atmospheric aerosols by gas chromatography-mass spectrometry, Talanta, 72, 199–205, http://dx.doi.org/10.1016/j.talanta.2006.10.018doi:10.1016/j.talanta.2006.10.018, 2007.

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, J. E., 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.: Evolution of Organic Aerosols in the Atmosphere, Science, 326, 1525–1529, http://dx.doi.org/10.1126/science.1180353doi:10.1126/science.1180353, 2009.

Kristensson, A., Dal Maso, M., Swietlicki, E., Hussein, T., Zhou, J., Kerminen, V. M., and Kulmala, M.: Characterization of new particle formation events at a background site in Southern Sweden: relation to air mass history, Tellus B, 60, 330–344, http://dx.doi.org/10.1111/j.1600-0889.2008.00345.xdoi:10.1111/j.1600-0889.2008.00345.x, 2008.

Levin, I. and Hesshaimer, V.: Radiocarbon – a unique tracer of global carbon cycle dynamics, Radiocarbon, 42, 69–80, 2000.

Levin, I., Hammer, S., Kromer, B., and Meinhardt, F.: Radiocarbon observations in atmospheric CO2: Determining fossil fuel CO2 over Europe using Jungfraujoch observations as background, Sci. Total Environ., 391, 211–216, http://dx.doi.org/10.1016/j.scitotenv.2007.10.019doi:10.1016/j.scitotenv.2007.10.019, 2008.

Lewis, C. W., Klouda, G. A., and Ellenson, W. D.: Radiocarbon measurement of the biogenic contribution to summertime PM-2.5 ambient aerosol in Nashville, TN, Atmos. Environ., 38, 6053–6061, http://dx.doi.org/10.1016/j.atmosenv.2004.06.011doi:10.1016/j.atmosenv.2004.06.011, 2004.

Locker, H. B.: The use of levoglucosan to assess the environmental impact of residential wood-burning on air quality, Other Information: Thesis (Ph.D), Hanover, NH (US); Dartmouth College, 147~pp., 1988.

Mareckova, K., Wankmueller, R., Anderl, M., Poupa, S., and Wieser, M.: Inventory Review 2009. Emission Data reported under the LRTAP Convention and NEC Directive. Stage 1 and 2 review. Status of gridded data and LPS dataISBN 978-3-99004-038-6, 2009.

Masiello, C. A.: New directions in black carbon organic geochemistry, Mar. Chem., 92, 201–213, http://dx.doi.org/10.1016/j.marchem.2004.06.043doi:10.1016/j.marchem.2004.06.043, 2004.

May, B., Wagenbach, D., Hammer, S., Steier, P., Puxbaum, H., and Pio, C.: The anthropogenic influence on carbonaceous aerosol in the European background, Tellus B, 61, 464–472, 2009.

McKay, M. D., Beckman, R. J., and Conover, W. J.: A Comparison of Three Methods for Selecting Values of Input Variables in the Analysis of Output from a Computer Code, Technometrics, 21, 239–245, 1979.

Menon, S., Hansen, J., Nazarenko, L., and Luo, Y.: Climate effects of black carbon aerosols in China and India, Science, 297, 2250–2253, 2002.

Murphy, B. N. and Pandis, S. N.: Simulating the Formation of Semivolatile Primary and Secondary Organic Aerosol in a Regional Chemical Transport Model, Environ. Sci. Technol., 43, 4722–4728, http://dx.doi.org/10.1021/es803168adoi:10.1021/es803168a, 2009.

Nielsen, O.-K., Illerup, J. B., Kindbom, K., Saarinen, K., Aasestad, K., Hallsdottir, B., Winther, M., Sjodin, Å., Makela, K., and Mikkola-Pusa, J.: Review, improvement and harmonisation of the Nordic particulate matter air emission inventories, National environmental research institute, Aarhus NERI Technical Report no. 809, 77, 2010.

Oros, D. R. and Simoneit, B. R. T.: Identification and emission factors of molecular tracers in organic aerosols from biomass burning Part 1. Temperate climate conifers, Appl. Geochem., 16, 1513–1544, http://dx.doi.org/10.1016/s0883-2927(01)00021-xdoi:10.1016/s0883-2927(01)00021-x, 2001a.

Oros, D. R. and Simoneit, B. R. T.: Identification and emission factors of molecular tracers in organic aerosols from biomass burning Part 2. Deciduous trees, Appl. Geochem., 16, 1545–1565, http://dx.doi.org/10.1016/s0883-2927(01)00022-1doi:10.1016/s0883-2927(01)00022-1, 2001b.

Pope III, C. A., Burnett, R. T., and Thun, M. J.: Lung Cancer, Cardiopulmonary Mortality, and Long-term Exposure to Fine Particulate Air Pollution, JAMA: Journal of the American Medical Association, 287, 1132–1142, 2002.

Pöschl, U.: Atmospheric aerosols: Composition, transformation, climate and health effects, Angew. Chem.-Int. Edit., 44, 7520–7540, http://dx.doi.org/10.1002/anie.200501122doi:10.1002/anie.200501122, 2005.

Putaud, J.-P., Cavalli, F., Alastuey, A., Bourcier, L., Ceburnis, D., Džumbová, L., Fors, E., Genberg, J., Hoffer, A., Kiss, G., Schwarz, J., Sellegri, K., Viana, M., and Yttri, K. E.: Determination and mitigation of artifacts in sampling particulate organic carbon across Europe, IAC, Helsinki, 2010.

Puxbaum, H., Caseiro, A., Sanchez-Ochoa, A., Kasper-Giebl, A., Claeys, M., Gelencser, A., Legrand, M., Preunkert, S., and Pio, C.: Levoglucosan levels at background sites in Europe for assessing the impact of biomass combustion on the European aerosol background, J. Geophys. Res.-Atmos., 112, D23S05, http://dx.doi.org/10.1029/2006JD008114doi:10.1029/2006JD008114, 2007.

Ramanathan, V. and Carmichael, G.: Global and regional climate changes due to black carbon, Nature Geosci., 1, 221–227, 2008.

Reimer, P. J., Brown, T. A., and Reimer, R. W.: Discussion: Reporting and Calibration of Post-Bomb 14C Data, Radiocarbon, 46, 1299–1304, 2004.

Richards, F. J.: A Flexible Growth Function for Empirical Use, J. Exp. Bot., 10, 290–300, http://dx.doi.org/10.1093/jxb/10.2.301doi:10.1093/jxb/10.2.301, 1959.

Rinne, J., Bäck, J., and Hakola, H.: Biogenic volatile organic compound emissions from Eurasian taiga: Current knowledge and future directions, Boreal Environ. Res., 14, 807–826, 2009.

Saarikoski, S., Sillanpää, M., Saarnio, K., Hillamo, R., Pennanen, A., and Salonen, R.: Impact of Biomass Combustion on Urban Fine Particulate Matter in Central and Northern Europe, Water Air Soil Pollut., 191, 265–277, http://dx.doi.org/10.1007/s11270-008-9623-1doi:10.1007/s11270-008-9623-1, 2008.

Schauer, J. J., Kleeman, M. J., Cass, G. R., and Simoneit, B. R. T.: Measurement of Emissions from Air Pollution Sources. 3. C1-C29 Organic Compounds from Fireplace Combustion of Wood, Environ. Sci. Technol., 35, 1716–1728, http://dx.doi.org/10.1021/es001331edoi:10.1021/es001331e, 2001.

Shrivastava, M. K., Lane, T. E., Donahue, N. M., Pandis, S. N., and Robinson, A. L.: Effects of gas particle partitioning and aging of primary emissions on urban and regional organic aerosol concentrations, J. Geophys. Res.-Atmos., 113(16), D18301, http://dx.doi.org/10.1029/2007jd009735doi:10.1029/2007jd009735, 2008.

Simpson, D., Winiwarter, W., Börjesson, G., Cinderby, S., Ferreiro, A., Guenther, A., Hewitt, C. N., Janson, R., Khalil, M. A. K., Owen, S., Pierce, T. E., Puxbaum, H., Shearer, M., Skiba, U., Steinbrecher, R., Tarrasón, L., and Öquist, M. G.: Inventorying emissions from Nature in Europe, J. Geophys. Res. Atmos., 104D, 8113–8152, 1999.

Simpson, D., Yttri, K. E., Klimont, Z., Kupiainen, K., Caseiro, A., Gelencsér, A., Pio, C., Puxbaum, H., and Legrand, M.: Modeling carbonaceous aerosol over Europe: Analysis of the CARBOSOL and EMEP EC/OC campaigns, J. Geophys. Res. Atmos., 112, 1–26, 2007.

Simpson, D., Benedictow, A., Berge, H., Bergström, R., Fagerli, H., Gauss, M., Jonson, J., Nyri, A., Semeena, V., Tsyro, S., Valdebenito, A., and Wind, P.: The EMEP MSC-W Chemical Transport model I: Model documentation, to be submitted to Atmos. Chem. Phys., 2011.

Skog, G.: The single stage AMS machine at Lund University: Status report, Nuclear Instruments and Methods in Physics Research Section B, Beam Interactions with Materials and Atoms, 259, 1–6, http://dx.doi.org/10.1016/j.nimb.2007.01.190doi:10.1016/j.nimb.2007.01.190, 2007.

Skog, G., Rundgren, M., and Sköld, P.: Status of the Single Stage AMS machine at Lund University after 4~years of operation, Nuclear Instruments and Methods in Physics Research Section B, Beam Interactions with Materials and Atoms, 268, 895–897, http://dx.doi.org/10.1016/j.nimb.2009.10.058doi:10.1016/j.nimb.2009.10.058, 2010.

Stenström, K., Skog, G., Nilsson, C. M., Hellborg, R., Leide Svegborn, S., Georgiadou, E., and Mattsson, S.: Local variations in 14C – how is bomb-pulse dating of human cells and tissues affected?, Nuclear Instruments & Methods in Physics Research Section B, B268, 1299–1302, 2010.

Stuiver, M. and Quay, P. D.: Atmospheric14C changes resulting from fossil fuel CO2 release and cosmic ray flux variability, Earth Planet. Sci. Lett., 53, 349–362, http://dx.doi.org/10.1016/0012-821x(81)90040-6doi:10.1016/0012-821x(81)90040-6, 1981.

Suess, H. E.: Radiocarbon Concentration in Modern Wood, Science, 122, 415–417, 1955.

Szidat, S., Jenk, T. M., Gäggeler, H. W., Synal, H. A., Fisseha, R., Baltensperger, U., Kalberer, M., Samburova, V., Reimann, S., Kasper-Giebl, A., and Hajdas, I.: Radiocarbon ($^14$C)-deduced biogenic and anthropogenic contributions to organic carbon (OC) of urban aerosols from Zurich, Switzerland, Atmos. Environ., 38, 4035–4044, http://dx.doi.org/10.1016/j.atmosenv.2004.03.066doi:10.1016/j.atmosenv.2004.03.066, 2004.

Szidat, S., Jenk, T. M., Synal, H. A., Kalberer, M., Wacker, L., Hajdas, I., Kasper-Giebl, A., and Baltensperger, U.: Contributions of fossil fuel, biomass-burning, and biogenic emissions to carbonaceous aerosols in Zurich as traced by $^14$C, J. Geophys. Res.-Atmos., 111, D07206, doi:07210.01029/02005JD006590, 2006.

Szidat, S., Prevot, A. S. H., Sandradewi, J., Alfarra, M. R., Synal, H.-A., Wacker, L., and Baltensperger, U.: Dominant impact of residential wood burning on particulate matter in Alpine valleys during winter, Geophys. Res. Lett., 34, L05820, doi:05810.01029/02006GL028325, 2007.

Szidat, S., Ruff, M., Perron, N., Wacker, L., Synal, H.-A., Hallquist, M., Shannigrahi, A. S., Yttri, K. E., Dye, C., and Simpson, D.: Fossil and non-fossil sources of organic carbon (OC) and elemental carbon (EC) in G�teborg, Sweden, Atmos. Chem. Phys., 9, 1521–1535, http://dx.doi.org/10.5194/acp-9-1521-2009doi:10.5194/acp-9-1521-2009, 2009.

Visschedijk, A., Denier van der Gon, H., Droge, R., and van der Brugh, A.: European high resolution and size-differentiated emission inventory for elemental and organic carbon for the year 2005, TNO, Utrecht, 2009.

Yttri, K. E., Dye, C., and Kiss, G.: Ambient aerosol concentrations of sugars and sugar-alcohols at four different sites in Norway, Atmos. Chem. Phys., 7, 4267–4279, http://dx.doi.org/10.5194/acp-7-4267-2007doi:10.5194/acp-7-4267-2007, 2007.

Yttri, K. E., Dye, C., Braathen, O.-A., Simpson, D., and Steinnes, E.: Carbonaceous aerosols in Norwegian urban areas, Atmos. Chem. Phys., 9, 2007–2020, http://dx.doi.org/10.5194/acp-9-2007-2009doi:10.5194/acp-9-2007-2009, 2009.

Yttri, K. E., Simpson, D., Stenström, K., Puxbaum, H., and Svendby, T.: Source apportionment of the carbonaceous aerosol in Norway – quantitative estimates based on $^14$C, thermal-optical and organic tracer analysis, Atmos. Chem. Phys. Discuss., 11, 7375–7422, http://dx.doi.org/10.5194/acpd-11-7375-2011doi:10.5194/acpd-11-7375-2011, 2011.

Zdráhal, Z., Oliveira, J., and Vermeylen, R.: Improved Method for Quantifying Levoglucosan and Related Monosaccharide Anhydrides in Atmospheric Aerosols and Application to Samples from Urban and Tropical Locations, Environ. Sci. Technol., 36, 747–754, 2002.

Zemankova, K. and Brechler, J.: Emissions of biogenic VOC from forest ecosystems in central Europe: Estimation and comparison with anthropogenic emission inventory, Environ. Pollut., 158, 462–469, http://dx.doi.org/10.1016/j.envpol.2009.08.032doi:10.1016/j.envpol.2009.08.032, 2010.