References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-12-11533-2012

Airborne observations of aerosol microphysical properties and particle ageing processes in the troposphere above Europe

Hamburger

¹ ⁴ McMeeking

² ⁵ Minikin

¹ Petzold

¹ ⁶ Coe

² Krejci

Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Physik der Atmosphäre, Oberpfaffenhofen, 82234 Wessling, Germany

School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester M13 9PL, UK

Department of Applied Environmental Science (ITM), Stockholm University, 106 91 Stockholm, Sweden

now at: Department of Applied Environmental Science (ITM), Stockholm University, 106 91 Stockholm, Sweden

now at: Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523, USA

now at: Institut für Energie- und Klimaforschung IEK-8: Troposphäre, Forschungszentrum Jülich GmbH, 52425 Jülich, Germany

04 12 2012

12 23 11533 11554

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

This article is available from http://www.atmos-chem-phys.net/12/11533/2012/acp-12-11533-2012.html

The full text article is available as a PDF file from http://www.atmos-chem-phys.net/12/11533/2012/acp-12-11533-2012.pdf

In-situ measurements of aerosol microphysical properties were performed in May 2008 during the EUCAARI-LONGREX campaign. Two aircraft, the FAAM BAe-146 and DLR Falcon 20, operated from Oberpfaffenhofen, Germany. A comprehensive data set was obtained comprising the wider region of Europe north of the Alps throughout the whole tropospheric column. Prevailing stable synoptic conditions enabled measurements of accumulating emissions inside the continental boundary layer reaching a maximum total number concentration of 19 000 particles cm<sup>−3</sup> stp. Ultra-fine particles as indicators for nucleation events were observed within the boundary layer during high pressure conditions and after updraft of emissions induced by frontal passages above 8 km altitude in the upper free troposphere. Aerosol ageing processes during air mass transport are analysed using trajectory analysis. The ratio of particles containing a non-volatile core (250 °C) to the total aerosol number concentration was observed to increase within the first 12 to 48 h from the particle source from 50 to 85% due to coagulation. Aged aerosol also features an increased fraction of accumulation mode particles of approximately 40% of the total number concentration. The presented analysis provides an extensive data set of tropospheric aerosol microphysical properties on a continental scale which can be used for atmospheric aerosol models and comparisons of satellite retrievals.

References 1

Ansmann, A., Wandinger, U., Wiedensohler, A., and Leiterer, U.: Lindenberg Aerosol Characterization Experiment 1998 (LACE 98): Overview, J. Geophys. Res., 107, 8129, http://dx.doi.org/10.1029/2000JD000233doi:10.1029/2000JD000233, 2002.

Asmi, A., Wiedensohler, A., Laj, P., Fjaeraa, A.-M., Sellegri, K., Birmili, W., Weingartner, E., Baltensperger, U., Zdimal, V., Zikova, N., Putaud, J.-P., Marinoni, A., Tunved, P., Hansson, H.-C., Fiebig, M., Kivekäs, N., Lihavainen, H., Asmi, E., Ulevicius, V., Aalto, P P., Swietlicki, E., Kristensson, A., Mihalopoulos, N., Kalivitis, N., Kalapov, I., Kiss, G., de~Leeuw, G., Henzing, B., Harrison, R M., Beddows, D., O'Dowd, C., Jennings, S G., Flentje, H., Weinhold, K., Meinhardt, F., Ries, L., and Kulmala, M.: Number size distributions and seasonality of submicron particles in Europe 2008–2009, Atmos. Chem. Phys., 11, 5505–5538, http://dx.doi.org/10.5194/acp-11-5505-2011doi:10.5194/acp-11-5505-2011, 2011.

Birmili, W., Wiedensohler, A., Heintzenberg, J., and Lehmann, K.: Atmospheric particle number size distribution in central Europe: Statistical relations to air masses and meteorology, J. Geophys. Res., 106, 32005–32018, http://dx.doi.org/10.1029/2000JD000220doi:10.1029/2000JD000220, 2001.

Bohren, C F. and Huffman, D R.: Absorption and scattering of light by small particles, John Wiley & Sons, Inc., New York, 1983.

Bond, T C., Streets, D G., Yarber, K F., Nelson, S M., Woo, J.-H., and Klimont, Z.: A technology-based global inventory of black and organic carbon emissions from combustion, J. Geophys. Res., 109, D14203, http://dx.doi.org/10.1029/2003JD003697doi:10.1029/2003JD003697, 2004.

Booth, B. B B., Dunstone, N J., Halloran, P R., Andrews, T., and Bellouin, N.: Aerosols implicated as a prime driver of twentieth-century North Atlantic climate variability, Nature, 484, 228–232, http://dx.doi.org/10.1038/nature10946doi:10.1038/nature10946, 2012.

Boulon, J., Sellegri, K., Hervo, M., Picard, D., Pichon, J.-M., Fréville, P., and Laj, P.: Investigation of nucleation events vertical extent: a long term study at two different altitude sites, Atmos. Chem. Phys., 11, 5625–5639, http://dx.doi.org/10.5194/acp-11-5625-2011doi:10.5194/acp-11-5625-2011, 2011.

Brenninkmeijer, C. A M., Crutzen, P J., Fischer, H., Güsten, H., Hans, W., Heinrich, G., Heintzenberg, J., Hermann, M., Immelmann, T., Kersting, D., Maiss, M., Nolle, M., Pitscheider, A., Pohlkamp, H., Scharffe, D., Specht, K., and Wiedensohler, A.: CARIBIC – Civil Aircraft for Global Measurement of Trace Gases and Aerosols in the Tropopause Region, J. Atmos. Ocean. Technol., 16, 1373–1383, http://dx.doi.org/10.1175/1520-0426(1999)016<1373:CCAFGM>2.0.CO;2doi:10.1175/1520-0426(1999)016<1373:CCAFGM>2.0.CO;2, 1999.

Brenninkmeijer, C. A M., Crutzen, P., Boumard, F., Dauer, T., Dix, B., Ebinghaus, R., Filippi, D., Fischer, H., Franke, H., Frieß, U., Heintzenberg, J., Helleis, F., Hermann, M., Kock, H H., Koeppel, C., Lelieveld, J., Leuenberger, M., Martinsson, B G., Miemczyk, S., Moret, H P., Nguyen, H N., Nyfeler, P., Oram, D., O'Sullivan, D., Penkett, S., Platt, U., Pupek, M., Ramonet, M., Randa, B., Reichelt, M., Rhee, T S., Rohwer, J., Rosenfeld, K., Scharffe, D., Schlager, H., Schumann, U., Slemr, F., Sprung, D., Stock, P., Thaler, R., Valentino, F., van Velthoven, P., Waibel, A., Wandel, A., Waschitschek, K., Wiedensohler, A., Xueref-Remy, I., Zahn, A., Zech, U., and Ziereis, H.: Civil Aircraft for the regular investigation of the atmosphere based on an instrumented container: The new CARIBIC system, Atmos. Chem. Phys., 7, 4953–4976, http://dx.doi.org/10.5194/acp-7-4953-2007doi:10.5194/acp-7-4953-2007, 2007.

Brock, C A., Jonsson, H H., Wilson, J C., Dye, J E., Baumgardner, D., Borrmann, S., Pitts, M C., Osborn, M T., DeCoursey, R J., and Woods, D C.: Relationships between optical extinction, backscatter and aerosol surface and volume in the stratosphere following the eruption of Mt. Pinatubo, Geophys. Res. Lett., 20, 2555–2558, http://dx.doi.org/10.1029/93GL01691doi:10.1029/93GL01691, 1993.

Clarke, A. and Kapustin, V.: Hemispheric Aerosol Vertical Profiles: Anthropogenic Impacts on Optical Depth and Cloud Nuclei, Science, 329, 1488–1492, http://dx.doi.org/10.1126/science.1188838doi:10.1126/science.1188838, 2010.

Crumeyrolle, S., Manninen, H E., Sellegri, K., Roberts, G., Gomes, L., Kulmala, M., Weigel, R., Laj, P., and Schwarzenboeck, A.: New particle formation events measured on board the ATR-42 aircraft during the EUCAARI campaign, Atmos. Chem. Phys., 10, 6721–6735, http://dx.doi.org/10.5194/acp-10-6721-2010doi:10.5194/acp-10-6721-2010, 2010.

Dall'Osto, M., Ceburnis, D., Martucci, G., Bialek, J., Dupuy, R., Jennings, S G., Berresheim, H., Wenger, J., Healy, R., Facchini, M C., Rinaldi, M., Giulianelli, L., Finessi, E., Worsnop, D., Ehn, M., Mikkilä, J., Kulmala, M., and O'Dowd, C D.: Aerosol properties associated with air masses arriving into the North East Atlantic during the 2008 Mace Head EUCAARI intensive observing period: an overview, Atmos. Chem. Phys., 10, 8413–8435, http://dx.doi.org/10.5194/acp-10-8413-2010doi:10.5194/acp-10-8413-2010, 2010.

Engler, C., Rose, D., Wehner, B., Wiedensohler, A., Brüggemann, E., Gnauk, T., Spindler, G., Tuch, T., and Birmili, W.: Size distributions of non-volatile particle residuals ($D_\text p<$800 nm) at a rural site in Germany and relation to air mass origin, Atmos. Chem. Phys., 7, 5785–5802, http://dx.doi.org/10.5194/acp-7-5785-2007doi:10.5194/acp-7-5785-2007, 2007.

Esselborn, M., Wirth, M., Fix, A., Tesche, M., and Ehret, G.: Airborne high spectral resolution lidar for measuring aerosol extinction and backscatter coefficients, Appl. Opt., 47, 346–358, http://dx.doi.org/10.1364/AO.47.000346doi:10.1364/AO.47.000346, 2008.

Feldpausch, P., Fiebig, M., Fritzsche, L., and Petzold, A.: Measurement of ultrafine aerosol size distributions by a combination of diffusion screen separators and condensation particle counters, J. Aerosol Sci., 37, 577–597, http://dx.doi.org/10.1016/j.jaerosci.2005.04.009doi:10.1016/j.jaerosci.2005.04.009, 2006.

Fiebig, M.: Das troposphärische Aerosol in mittleren Breiten - Mikrophysik, Optik und Klimaantrieb am Beispiel der Feldstudie LACE 98, Ph.D. thesis, Ludwig-Maximilians-Universität, München, Germany, 2001.

Fiebig, M., Stein, C., Schröder, F., Feldpausch, P., and Petzold, A.: Inversion of data containing information on the aerosol particle size distribution using multiple instruments, J. Aerosol Sci., 36, 1353–1372, http://dx.doi.org/10.1016/j.jaerosci.2005.01.004doi:10.1016/j.jaerosci.2005.01.004, 2005.

Forster, P., Ramaswamy, V., Artaxo, P., Berntsen, T., Betts, R., Fahey, D., Haywood, J., Lean, J., Lowe, D., Myhre, G., Nganga, J., Prinn, R., Raga, G., Schulz, M., and Dorland, R V.: Changes in Atmospheric Constituents and in Radiative Forcing. In: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, http://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch2.html, 2007.

Hamburger, T.: Aerosol microphysical properties during anticyclonic flow conditions over Europe, Ph.D. thesis, Ludwig-Maximilians-Universität, München, http://nbn-resolving.de/urn:nbn:de:bvb:19-127766, 2011.

Hamburger, T., McMeeking, G., Minikin, A., Birmili, W., Dall'Osto, M., O'Dowd, C., Flentje, H., Henzing, B., Junninen, H., Kristensson, A., de~Leeuw, G., Stohl, A., Burkhart, J F., Coe, H., Krejci, R., and Petzold, A.: Overview of the synoptic and pollution situation over Europe during the EUCAARI-LONGREX field campaign, Atmos. Chem. Phys., 11, 1065–1082, http://dx.doi.org/10.5194/acp-11-1065-2011doi:10.5194/acp-11-1065-2011, 2011.

Haywood, J. and Boucher, O.: Estimates of the direct and indirect radiative forcing due to tropospheric aerosols: A review, Rev. Geophys., 38, 513–543, http://dx.doi.org/10.1029/1999RG000078doi:10.1029/1999RG000078, 2000.

Highwood, E J., Northway, M J., McMeeking, G R., Morgan, W T., Liu, D., Osborne, S., Bower, K., Coe, H., Ryder, C., and Williams, P.: Aerosol scattering and absorption during the EUCAARI-LONGREX flights of the Facility for Airborne Atmospheric Measurements (FAAM) BAe-146: can measurements and models agree?, Atmos. Chem. Phys., 12, 7251–7267, http://dx.doi.org/10.5194/acp-12-7251-2012doi:10.5194/acp-12-7251-2012, 2012.

Iorga, G., Hitzenberger, R., Kasper-Giebl, A., and Puxbaum, H.: Direct radiative effect modeled for regional aerosols in central Europe including the effect of relative humidity, J. Geophys. Res., 112, D01204, http://dx.doi.org/10.1029/2005JD006828doi:10.1029/2005JD006828, 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., E., Dunlea, 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.: Evolution of Organic Aerosols in the Atmosphere, Science, 326, 1525–1529, http://dx.doi.org/10.1126/science.1180353doi:10.1126/science.1180353, 2009.

Johnson, G., Ristovski, Z., and Morawska, L.: Method for measuring the hygroscopic behaviour of lower volatility fractions in an internally mixed aerosol, J. Aerosol Sci., 35, 443–455, http://dx.doi.org/10.1016/j.jaerosci.2003.10.008doi:10.1016/j.jaerosci.2003.10.008, 2004.

Kulmala, M. and Kerminen, V.-M.: On the formation and growth of atmospheric nanoparticles, Atmospheric Research, 90, 132–150, http://dx.doi.org/10.1016/j.atmosres.2008.01.005doi:10.1016/j.atmosres.2008.01.005, 17th International Conference on Nucleation and Atmospheric Aerosols ICNAA07, 2008.

Kulmala, M., Asmi, A., Lappalainen, H K., Carslaw, K S., Pöschl, U., Baltensperger, U., Hov, ., Brenquier, J.-L., Pandis, S N., Facchini, M C., Hansson, H.-C., Wiedensohler, A., and O'Dowd, C D.: Introduction: European Integrated Project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales, Atmos. Chem. Phys., 9, 2825–2841, http://dx.doi.org/10.5194/acp-9-2825-2009doi:10.5194/acp-9-2825-2009, 2009.

Kulmala, M., Asmi, A., Lappalainen, H K., Baltensperger, U., Brenguier, J.-L., Facchini, M C., Hansson, H.-C., Hov, Ø., O'Dowd, C D., Pöschl, U., Wiedensohler, A., Boers, R., Boucher, O., de~Leeuw, G., Denier van~der Gon, H. A C., 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, R., 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., Hyvärinen, A., Hõrrak, U., Iinuma, Y., Iversen, T., Josipovic, M., Kanakidou, M., Kiendler-Scharr, A., Kirkevåg, A., Kiss, G., Klimont, Z., Kolmonen, P., Komppula, M., Kristjánsson, 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., Prévôt, A. S H., Pryor, S., Reddington, C L., Roberts, G., Rosenfeld, D., Schwarz, J., Seland, Ø., 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., S~Carslaw, K., and Pandis, S N.: General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales, Atmos. Chem. Phys., 11, 13061–13143, http://dx.doi.org/10.5194/acp-11-13061-2011doi:10.5194/acp-11-13061-2011, 2011.

Laj, P., Klausen, J., Bilde, M., Plaß-Duelmer, C., Pappalardo, G., Clerbaux, C., Baltensperger, U., Hjorth, J., Simpson, D., Reimann, S., Coheur, P.-F., Richter, A., Mazière, M D., Rudich, Y., McFiggans, G., Torseth, K., Wiedensohler, A., Morin, S., Schulz, M., Allan, J., Attié, J.-L., Barnes, I., Birmili, W., Cammas, J., Dommen, J., Dorn, H.-P., Fowler, D., Fuzzi, S., Glasius, M., Granier, C., Hermann, M., Isaksen, I., Kinne, S., Koren, I., Madonna, F., Maione, M., Massling, A., Moehler, O., Mona, L., Monks, P., Müller, D., Müller, T., Orphal, J., Peuch, V.-H., Stratmann, F., Tanré, D., Tyndall, G., Riziq, A A., Roozendael, M V., Villani, P., Wehner, B., Wex, H., and Zardini, A.: Measuring atmospheric composition change, Atmos. Environ., 43, 5351–5414, http://dx.doi.org/10.1016/j.atmosenv.2009.08.020doi:10.1016/j.atmosenv.2009.08.020, aCCENT Synthesis, 2009.

Liu, P. S K., Leaitch, W R., Strapp, J W., and Wasey, M A.: Response of Particle Measuring Systems Airborne ASASP and PCASP to NaCl and Latex Particles, Aerosol Sci. Technol., 16, 83–95, http://dx.doi.org/10.1080/02786829208959539doi:10.1080/02786829208959539, 1992.

Lohmann, U. and Feichter, J.: Global indirect aerosol effects: a review, Atmos. Chem. Phys., 5, 715–737, http://dx.doi.org/10.5194/acp-5-715-2005doi:10.5194/acp-5-715-2005, 2005.

McMeeking, G R., Hamburger, T., Liu, D., Flynn, M., Morgan, W T., Northway, M., Highwood, E J., Krejci, R., Allan, J D., Minikin, A., and Coe, H.: Black carbon measurements in the boundary layer over western and northern Europe, Atmos. Chem. Phys., 10, 9393–9414, http://dx.doi.org/10.5194/acp-10-9393-2010doi:10.5194/acp-10-9393-2010, 2010.

McMeeking, G R., Morgan, W T., Flynn, M., Highwood, E J., Turnbull, K., Haywood, J., and Coe, H.: Black carbon aerosol mixing state, organic aerosols and aerosol optical properties over the United Kingdom, Atmospheric Chemistry and Physics, 11, 9037–9052, http://dx.doi.org/10.5194/acp-11-9037-2011doi:10.5194/acp-11-9037-2011, 2011.

Minikin, A., Petzold, A., Ström, J., Krejci, R., Seifert, M., van Velthoven, P., Schlager, H., and Schumann, U.: Aircraft observations of the upper tropospheric fine particle aerosol in the Northern and Southern Hemispheres at midlatitudes, Geophys. Res. Lett., 30, 1503, http://dx.doi.org/10.1029/2002GL016458doi:10.1029/2002GL016458, 2003.

Mirme, S., Mirme, A., Minikin, A., Petzold, A., Hõrrak, U., Kerminen, V M., and Kulmala, M.: Atmospheric sub-3 nm particles at high altitudes, Atmos. Chem. Phys., 10, 437–451, http://dx.doi.org/10.5194/acp-10-437-2010doi:10.5194/acp-10-437-2010, 2010.

Morgan, W T., Allan, J D., Bower, K N., Esselborn, M., Harris, B., Henzing, J S., Highwood, E J., Kiendler-Scharr, A., McMeeking, G R., Mensah, A A., Northway, M J., Osborne, S., Williams, P I., Krejci, R., and Coe, H.: Enhancement of the aerosol direct radiative effect by semi-volatile aerosol components: airborne measurements in North-Western Europe, Atmos. Chem. Phys., 10, 8151–8171, http://dx.doi.org/10.5194/acp-10-8151-2010doi:10.5194/acp-10-8151-2010, 2010a.

Morgan, W T., Allan, J D., Bower, K N., Highwood, E J., Liu, D., McMeeking, G R., Northway, M J., Williams, P I., Krejci, R., and Coe, H.: Airborne measurements of the spatial distribution of aerosol chemical composition across Europe and evolution of the organic fraction, Atmos. Chem. Phys., 10, 4065–4083, http://dx.doi.org/10.5194/acp-10-4065-2010doi:10.5194/acp-10-4065-2010, 2010b.

O'Connor, T., Jennings, S., and O'Dowd, C.: Highlights of fifty years of atmospheric aerosol research at Mace Head, Atmos. Res., 90, 338–355, http://dx.doi.org/10.1016/j.atmosres.2008.08.014doi:10.1016/j.atmosres.2008.08.014, 17th International Conference on Nucleation and Atmospheric Aerosols – ICNAA07, 2008.

Petzold, A., Döpelheuer, A., Brock, C A., and Schröder, F.: In situ observations and model calculations of black carbon emission by aircraft at cruise altitude, J. Geophys. Res., 104, 22171–22181, http://dx.doi.org/10.1029/1999JD900460doi:10.1029/1999JD900460, 1999.

Petzold, A., Fiebig, M., Flentje, H., Keil, A., Leiterer, U., Schröder, F., Stifter, A., Wendisch, M., and Wendling, P.: Vertical variability of aerosol properties observed at a continental site during the Lindenberg Aerosol Characterization Experiment (LACE 98), J. Geophys. Res., 107, 8128, http://dx.doi.org/10.1029/2001JD001043doi:10.1029/2001JD001043, 2002.

Péré, J C., Mallet, M., Pont, V., and Bessagnet, B.: Impact of aerosol direct radiative forcing on the radiative budget, surface heat fluxes, and atmospheric dynamics during the heat wave of summer 2003 over western Europe: A modeling study, J. Geophys. Res., 116, D23119, http://dx.doi.org/10.1029/2011JD016240doi:10.1029/2011JD016240, 2011.

Putaud, J.-P., Raes, F., Dingenen, R V., Brüggemann, E., Facchini, M C., Decesari, S., Fuzzi, S., Gehrig, R., Hüglin, C., Laj, P., Lorbeer, G., Maenhaut, W., Mihalopoulos, N., Müller, K., Querol, X., Rodriguez, S., Schneider, J., Spindler, G., ten Brink, H., Tørseth, K., and Wiedensohler, A.: A European aerosol phenomenology–2: chemical characteristics of particulate matter at kerbside, urban, rural and background sites in Europe, Atmos. Environ., 38, 2579–2595, http://dx.doi.org/10.1016/j.atmosenv.2004.01.041doi:10.1016/j.atmosenv.2004.01.041, 2004.

Putaud, J.-P., Dingenen, R V., Alastuey, A., Bauer, H., Birmili, W., Cyrys, J., Flentje, H., Fuzzi, S., Gehrig, R., Hansson, H., Harrison, R., Herrmann, H., Hitzenberger, R., Hüglin, C., Jones, A., Kasper-Giebl, A., Kiss, G., Kousa, A., Kuhlbusch, T., Löschau, G., Maenhaut, W., Molnar, A., Moreno, T., Pekkanen, J., Perrino, C., Pitz, M., Puxbaum, H., Querol, X., Rodriguez, S., Salma, I., Schwarz, J., Smolik, J., Schneider, J., Spindler, G., ten Brink, H., Tursic, J., Viana, M., Wiedensohler, A., and Raes, F.: A European aerosol phenomenology – 3: Physical and chemical characteristics of particulate matter from 60 rural, urban, and kerbside sites across Europe, Atmos. Environ., 44, 1308–1320, http://dx.doi.org/10.1016/j.atmosenv.2009.12.011doi:10.1016/j.atmosenv.2009.12.011, 2010.

Reddington, C L., Carslaw, K S., Spracklen, D V., Frontoso, M G., Collins, L., Merikanto, J., Minikin, A., Hamburger, T., Coe, H., Kulmala, M., Aalto, P., Flentje, H., Plass-Dülmer, C., Birmili, W., Wiedensohler, A., Wehner, B., Tuch, T., Sonntag, A., O'Dowd, C D., Jennings, S G., Dupuy, R., Baltensperger, U., Weingartner, E., Hansson, H.-C., Tunved, P., Laj, P., Sellegri, K., Boulon, J., Putaud, J.-P., Gruening, C., Swietlicki, E., Roldin, P., Henzing, J S., Moerman, M., Mihalopoulos, N., Kouvarakis, G., Ždímal, V., Zíková, N., Marinoni, A., Bonasoni, P., and Duchi, R.: Primary versus secondary contributions to particle number concentrations in the European boundary layer, Atmos. Chem. Phys., 11, 12007–12036, http://dx.doi.org/10.5194/acp-11-12007-2011doi:10.5194/acp-11-12007-2011, 2011.

Riemer, N., Vogel, H., and Vogel, B.: Soot aging time scales in polluted regions during day and night, Atmos. Chem. Phys., 4, 1885–1893, http://dx.doi.org/10.5194/acp-4-1885-2004doi:10.5194/acp-4-1885-2004, 2004.

Roldin, P., Swietlicki, E., Massling, A., Kristensson, A., Löndahl, J., Eriksson, A., Pagels, J., and Gustafsson, S.: Aerosol ageing in an urban plume – implication for climate, Atmos. Chem. Phys., 11, 5897–5915, http://dx.doi.org/10.5194/acp-11-5897-2011doi:10.5194/acp-11-5897-2011, 2011.

Schröder, F., Kärcher, B., Fiebig, M., and Petzold, A.: Aerosol states in the free troposphere at northern midlatitudes, J. Geophys. Res., 107, 8126, http://dx.doi.org/10.1029/2000JD000194doi:10.1029/2000JD000194, 2002.

Schröder, F P., Kärcher, B., Petzold, A., Baumann, R., Busen, R., Hoell, C., and Schumann, U.: Ultrafine aerosol particles in aircraft plumes: In situ observations, Geophys. Res. Lett., 25, 2789–2792, http://dx.doi.org/10.1029/98GL02078doi:10.1029/98GL02078, 1998.

Shindell, D. and Faluvegi, G.: Climate response to regional radiative forcing during the twentieth century, Nature Geosci., 2, 294–300, http://dx.doi.org/10.1038/ngeo473doi:10.1038/ngeo473, 2009.

Singh, H B., Anderson, B E., Avery, M A., Viezee, W., Chen, Y., Tabazadeh, A., Hamill, P., Pueschel, R., Fuelberg, H E., and Hannan, J R.: Global distribution and sources of volatile and nonvolatile aerosol in the remote troposphere, J. Geophys. Res., 107, 4121, http://dx.doi.org/10.1029/2001JD000486doi:10.1029/2001JD000486, 2002.

Slanina, J., Lamoen-doornenbal, L V., Lingerak, W A., Meilof, W., Klockow, D., and Nießner, R.: Application of a Thermo-Denuder Analyser to the Determination of H2SO4, HNO3 and NH3 in Air, Int. J. Environ. Analyt. Chem., 9, 59–70, http://dx.doi.org/10.1080/03067318108071509doi:10.1080/03067318108071509, 1981.

Stock, M., Cheng, Y F., Birmili, W., Massling, A., Wehner, B., Müller, T., Leinert, S., Kalivitis, N., Mihalopoulos, N., and Wiedensohler, A.: Hygroscopic properties of atmospheric aerosol particles over the Eastern Mediterranean: implications for regional direct radiative forcing under clean and polluted conditions, Atmos. Chem. Phys., 11, 4251–4271, http://dx.doi.org/10.5194/acp-11-4251-2011doi:10.5194/acp-11-4251-2011, 2011.

Stohl, A., Forster, C., Frank, A., Seibert, P., and Wotawa, G.: Technical note: The Lagrangian particle dispersion model FLEXPART version 6.2, Atmos. Chem. Phys., 5, 2461–2474, http://dx.doi.org/10.5194/acp-5-2461-2005doi:10.5194/acp-5-2461-2005, 2005.

Troen, I B. and Mahrt, L.: A simple model of the atmospheric boundary layer; sensitivity to surface evaporation, Bound.-Layer Meteorol., 37, 129–148, http://dx.doi.org/10.1007/BF00122760doi:10.1007/BF00122760, 1986.

Van~Dingenen, R., Raes, F., Putaud, J.-P., Baltensperger, U., Charron, A., Facchini, M C., Decesari, S., Fuzzi, S., Gehrig, R., Hansson, H.-C., Harrison, R M., Hüglin, C., Jones, A M., Laj, P., Lorbeer, G., Maenhaut, W., Palmgren, F., Querol, X., Rodriguez, S., Schneider, J., ten Brink, H., Tunved, P., Tørseth, K., Wehner, B., Weingartner, E., Wiedensohler, A., and Wåhlin, P.: A European aerosol phenomenology–1: physical characteristics of particulate matter at kerbside, urban, rural and background sites in Europe, Atmos. Environ., 38, 2561–2577, http://dx.doi.org/10.1016/j.atmosenv.2004.01.040doi:10.1016/j.atmosenv.2004.01.040, 2004.

Venzac, H., Sellegri, K., Villani, P., Picard, D., and Laj, P.: Seasonal variation of aerosol size distributions in the free troposphere and residual layer at the puy de Dôme station, France, Atmos. Chem. Phys., 9, 1465–1478, http://dx.doi.org/10.5194/acp-9-1465-2009doi:10.5194/acp-9-1465-2009, 2009.

Voigt, C., Schumann, U., Jurkat, T., Schäuble, D., Schlager, H., Petzold, A., Gayet, J.-F., Krämer, M., Schneider, J., Borrmann, S., Schmale, J., Jessberger, P., Hamburger, T., Lichtenstern, M., Scheibe, M., Gourbeyre, C., Meyer, J., Kübbeler, M., Frey, W., Kalesse, H., Butler, T., Lawrence, M G., Holzäpfel, F., Arnold, F., Wendisch, M., Döpelheuer, A., Gottschaldt, K., Baumann, R., Zöger, M., Sölch, I., Rautenhaus, M., and Dörnbrack, A.: In-situ observations of young contrails – overview and selected results from the CONCERT campaign, Atmos. Chem. Phys., 10, 9039–9056, http://dx.doi.org/10.5194/acp-10-9039-2010doi:10.5194/acp-10-9039-2010, 2010.

Weinzierl, B., Sauer, D., Esselborn, M., Petzold, A., Veira, A., Rose, M., Mund, S., Wirth, M., Ansmann, A., Tesche, M., Groß, S., and Freudenthaler, V.: Microphysical and optical properties of dust and tropical biomass burning aerosol layers in the Cape Verde region—an overview of the airborne in situ and lidar measurements during SAMUM-2, Tellus B, 63, 589–618, http://dx.doi.org/10.1111/j.1600-0889.2011.00566.xdoi:10.1111/j.1600-0889.2011.00566.x, 2011.

Wernli, B H. and Davies, H C.: A lagrangian-based analysis of extratropical cyclones. I: The method and some applications, Q. J. Roy. Meteorol. Soc., 123, 467–489, http://dx.doi.org/10.1002/qj.49712353811doi:10.1002/qj.49712353811, 1997.

Wernli, H.: A lagrangian-based analysis of extratropical cyclones. II: A detailed case-study, Q. J. Roy. Meteorol. Soc., 123, 1677–1706, http://dx.doi.org/10.1002/qj.49712354211doi:10.1002/qj.49712354211, 1997.

Williams, J., de~Reus, M., Krejci, R., Fischer, H., and Ström, J.: Application of the variability-size relationship to atmospheric aerosol studies: estimating aerosol lifetimes and ages, Atmos. Chem. Phys., 2, 133–145, http://dx.doi.org/10.5194/acp-2-133-2002doi:10.5194/acp-2-133-2002, 2002.