V. Aaltonen, H. Lihavainen, V. Kerminen, M. Komppula, J. Hatakka et al., Measurements of optical properties of atmospheric aerosols in Northern Finland, Atmos. Chem. Phys, vol.65194, issue.10, pp.1155-1164, 1155.
URL : https://hal.archives-ouvertes.fr/hal-00301933

A. Alastuey, X. Querol, S. Castillo, M. Escudero, A. Avila et al., Characterisation of TSP and PM2.5 at Iza??a and Sta. Cruz de Tenerife (Canary Islands, Spain) during a Saharan Dust Episode (July 2002), Atmospheric Environment, vol.39, issue.26, pp.4715-4728, 2002.
DOI : 10.1016/j.atmosenv.2005.04.018

. Www, atmos-chem-phys.net, Atmos. Chem. Phys, vol.187877, issue.18, pp.7877-7911, 2018.

M. Pandolfi, A European aerosol, p.6

T. L. Anderson and J. A. Ogren, Determining Aerosol Radiative Properties Using the TSI 3563 Integrating Nephelometer, Aerosol Science and Technology, vol.24, issue.1, pp.57-69, 1998.
DOI : 10.1175/1520-0450(1981)020<0328:OTRSOD>2.0.CO;2

E. Andrews, P. J. Sheridan, M. Fiebig, A. Mccomiskey, J. A. Ogren et al., Comparison of methods for deriving aerosol asymmetry parameter, Journal of Geophysical Research, vol.59, issue.1, pp.5-9, 2006.
DOI : 10.1029/2004JD005734

E. Andrews, J. A. Ogren, P. Bonasoni, A. Marinoni, E. Cuevas et al., Climatology of aerosol radiative properties in the free troposphere, Atmospheric Research, vol.102, issue.4, pp.365-393, 2011.
DOI : 10.1016/j.atmosres.2011.08.017

A. Asmi, A. Wiedensohler, P. Laj, A. Fjaeraa, K. Sellegri et al., Number size distributions and seasonality of submicron particles in Europe, Atmos. Chem. Phys, vol.115194, pp.5505-5538, 2008.
URL : https://hal.archives-ouvertes.fr/insu-00646114

A. Asmi, M. Collaud-coen, J. A. Ogren, E. Andrews, P. Sheridan et al., -situ aerosol particle number concentrations at GAW and ACTRIS stations, pp.895-916, 2013.

I. Barmpadimos, C. Hueglin, J. Keller, S. Henne, and A. S. Prévôt, Influence of meteorology on PM 10 trends and variability in Switzerland from, Atmos. Chem. Phys, vol.115194, issue.10, pp.1813-1835, 1813.

I. Barmpadimos, J. Keller, D. Oderbolz, C. Hueglin, and A. S. Prévôt, One decade of parallel fine (PM 2.5 ) and coarse (PM 10 ?PM 2.5 ) particulate matter measurements in Europe: trends and variability, Atmos. Chem. Phys, vol.125194, issue.10, pp.3189-3203, 2012.

M. H. Bergin, S. E. Schwartz, R. N. Halthore, J. A. Ogren, and D. L. Hlavka, Comparison of aerosol optical depth inferred from surface measurements with that determined by Sun photometry for cloud-free conditions at a continental U.S. site, Journal of Geophysical Research: Atmospheres, vol.17, issue.4, pp.6807-6816, 2000.
DOI : 10.1016/0004-6981(83)90179-8

T. C. Bond, D. S. Covert, and T. Muller, Truncation and Angular-Scattering Corrections for Absorbing Aerosol in the TSI 3563 Nephelometer, Aerosol Science and Technology, vol.108, issue.9, pp.866-871, 2009.
DOI : 10.1016/S0021-8502(03)00359-8

J. Boulon, K. Sellegri, M. Hervo, and P. Laj, Observations of nucleation of new particles in a volcanic plume, Natl. Acad. Sci. USA, pp.12223-12226, 2011.
DOI : 10.1034/j.1600-0889.2001.d01-33.x

URL : https://hal.archives-ouvertes.fr/insu-00646651

L. Bourcier, K. Sellegri, P. Chausse, J. M. Pichon, and P. Laj, Seasonal variation of water-soluble inorganic components in aerosol size-segregated at the puy de D??me station (1,465??m???a.s.l.), France, Journal of Atmospheric Chemistry, vol.26, issue.4, pp.47-66, 2012.
DOI : 10.1016/0960-1686(92)90347-N

N. Bukowiecki, E. Weingartner, M. Gysel, M. Collaud-coen, P. Zieger et al., A Review of More than 20 Years of Aerosol Observation at the High Altitude Research Station Jungfraujoch, Switzerland (3580 m asl), Aerosol and Air Quality Research, vol.16, issue.3, pp.764-788, 2016.
DOI : 10.4209/aaqr.2015.05.0305

C. M. Carrico, P. Kus, M. J. Rood, P. K. Quinn, and T. S. Bates, Mixtures of pollution, dust, sea salt, and volcanic aerosol during ACE-Asia: Radiative properties as a function of relative humidity, Journal of Geophysical Research, vol.36, issue.2, 2003.
DOI : 10.1016/S1352-2310(01)00455-1

D. C. Carslaw, The Openair Manual ? Open-Source Tools for Analysing Air Pollution Data, Manual for version 0.7-0, King's College

D. C. Carslaw and K. Ropkins, openair ??? An R package for air quality data analysis, Environmental Modelling & Software, vol.27, issue.28, pp.27-28, 2012.
DOI : 10.1016/j.envsoft.2011.09.008

F. Cavalli, A. Alastuey, H. Areskoug, D. Ceburnis, J. Cech et al., A European aerosol phenomenology ? Atmos. Environ, vol.4, issue.144, pp.133-145, 2016.

A. Chauvigné, K. Sellegri, M. Hervo, N. Montoux, P. Freville et al., Comparison of the aerosol optical properties and size distribution retrieved by sun photometer with in??situ measurements at midlatitude, Atmospheric Measurement Techniques, vol.9, issue.9, pp.4569-4585, 2016.
DOI : 10.5194/amt-9-4569-2016

A. Colette, W. Aas, L. Banin, C. Braban, M. Ferm et al., Air pollution trends in the EMEP region between, Chemical Co-ordinating Centre (CCC), Meteorological Synthesizing Centre-East (MSC-E), Meteorological Synthesizing Centre- West (MSC-W) EMEP/CCC Report 1, 1990.

C. Coen, M. Weingartner, E. Nyeki, S. Cozic, J. Henning et al., Long-term trend analysis of aerosol variables at the highalpine site Jungfraujoch, J. Geophys. Res, vol.112, 2007.

C. Coen, M. Weingartner, E. Apituley, A. Ceburnis, D. Fierz-schmidhauser et al., Minimizing light absorption measurement artifacts of the Aethalometer: evaluation of five correction algorithms, Atmospheric Measurement Techniques, vol.3, issue.2, pp.457-474, 2010.
DOI : 10.5194/amt-3-457-2010

C. Coen, M. Andrews, E. Asmi, A. Baltensperger, U. Bukowiecki et al., -situ optical measurements at GAW and IMPROVE stations, pp.869-894, 2013.

C. Coen, M. Andrews, E. Aliaga, D. Andrade, M. Angelov et al., The topography contribution to the influence of the atmospheric boundary layer at high altitude stations, Atmos. Chem. Phys. Discuss, vol.105194, pp.2017-692, 2017.

S. Crumeyrolle, H. E. Manninen, K. Sellegri, G. Roberts, L. Gomes et al., New particle formation events measured on board the ATR-42 aircraft during the EUCAARI campaign, Atmospheric Chemistry and Physics, vol.10, issue.14, pp.6721-6735, 2010.
DOI : 10.5194/acp-10-6721-2010

URL : https://hal.archives-ouvertes.fr/insu-00554263

M. Cusack, A. Alastuey, N. Pérez, J. Pey, and X. Querol, Trends of particulate matter (PM 2.5 ) and chemical composition at a regional background site in the Western Mediterranean over the last nine years, Atmos. Chem. Phys, vol.125194, issue.10, pp.8341-8357, 2002.

D. J. Delene and J. A. Ogren, Variability of Aerosol Optical Properties at Four North American Surface Monitoring Sites, Journal of the Atmospheric Sciences, vol.59, issue.6, pp.1135-1149, 2002.
DOI : 10.1175/1520-0469(2002)059<1135:VOAOPA>2.0.CO;2

E. Diapouli, M. I. Manousakas, S. Vratolis, V. Vasilatou, S. Pateraki et al., AIRUSE-LIFE +: estimation of natural source contributions to urban ambient air PM 10 and PM 2.5 concentrations in southern Europe ? implications to compliance with limit values, Atmos. Chem. Phys, vol.17105194, pp.3673-3685, 2017.

A. M. Diaz, J. P. Diaz, F. J. Exposito, P. A. Hernandez-leal, D. Savoie et al., Air masses and aerosols chemical components in the free troposphere at the subtropical northeast atlantic region, Journal of Atmospheric Chemistry, vol.19, issue.38, pp.63-90, 2006.
DOI : 10.1016/0960-1686(92)90040-R

S. J. Doherty, P. K. Quinn, A. Jefferson, C. M. Carrico, T. L. Anderson et al., A comparison and summary of aerosol optical properties as observed in situ from aircraft, ship, and land during ACE-Asia, Journal of Geophysical Research, vol.33, issue.D23, 2005.
DOI : 10.1029/2004JD004964

M. Ealo, A. Alastuey, A. Ripoll, N. Pérez, M. C. Minguillón et al., Detection of Saharan dust and biomass burning events using near-real-time intensive aerosol optical properties in the north-western Mediterranean, Atmospheric Chemistry and Physics, vol.16, issue.19, pp.12567-12586, 2016.
DOI : 10.5194/acp-16-12567-2016-supplement

, EEA: European Environmental Agency Air quality in Europe ? 2013 report, EEA report 9, pp.1725-9177, 2013.

K. Eleftheriadis, K. M. Ochsenkuhn, T. Lymperopoulou, A. Karanasiou, P. Razos et al., /publications/ air-quality-in-europe-2016 (last access Influence of local and regional sources on the observed spatial and temporal variability of size resolved atmospheric aerosol mass concentrations and water-soluble species in the Athens metropolitan area, EEA: European Environmental Agency Air quality in Europe ? 2016 report, pp.252-261, 2014.

K. Yttri, W. Aas, K. Tørseth, K. Stebel, Á. Nyíri et al., NILU Reference: O-98134, EMEP: Transboundary Particulate Matter in Europe Status Report, 2008.

A. Engvall, R. Krejci, J. Ström, R. Treffeisen, R. Scheele et al., Changes in aerosol properties during spring-summer period in the Arctic troposphere, Atmos . Chem. Phys, vol.85194, issue.10, pp.445-462, 2008.
URL : https://hal.archives-ouvertes.fr/hal-00296427

, CSI 003, 2011.

A. R. Esteve, V. Estellés, M. P. Utrillas, and J. A. Martínez-lozano, In-situ integrating nephelometer measurements of the scattering properties of??atmospheric aerosols at an urban coastal site in western Mediterranean, Atmospheric Environment, vol.47, pp.43-50, 2012.
DOI : 10.1016/j.atmosenv.2011.11.043

R. Fierz-schmidhauser, P. Zieger, A. Vaishya, C. Monahan, J. Bialek et al., Light scattering enhancement factors in the marine boundary layer, J. Geophys. Res, vol.115, 2010.

R. Fierz-schmidhauser, P. Zieger, M. Gysel, L. Kammermann, P. F. Decarlo et al., Measured and predicted aerosol light scattering enhancement factors at the high alpine site Jungfraujoch, Atmospheric Chemistry and Physics, vol.10, issue.5, pp.2319-2333, 2010.
DOI : 10.5194/acp-10-2319-2010

C. Guerreiro, F. Leeuw, . De, V. Foltescu, J. Horálek et al., Air Quality, target=EUB:NOTICE: THAL14005:EN:HTML (last access, 2014.
URL : https://hal.archives-ouvertes.fr/ineris-01855006

J. E. Hansen and L. D. Travis, Light scattering in planetary atmospheres, Space Science Reviews, vol.120, issue.4, pp.527-610, 1974.
DOI : 10.1002/sapm1955341256

S. Henschel, X. Querol, R. Atkinson, M. Pandolfi, A. Zeca et al., Ambient air SO2 patterns in 6 European cities, Atmospheric Environment, vol.79, pp.236-247, 2013.
DOI : 10.1016/j.atmosenv.2013.06.008

URL : https://hal.archives-ouvertes.fr/hal-01499609

M. Hollander and D. A. Wolfe, Nonparametric statistical methods, 1999.
DOI : 10.1002/9781119196037

, Synthesis Report Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Core Writing Team, p.151, 2014.

N. Kalivitis, A. Bougiatioti, G. Kouvarakis, M. , and N. , Long term measurements of atmospheric aerosol optical properties in the Eastern Mediterranean, Atmospheric Research, vol.102, issue.3, pp.351-357, 2011.
DOI : 10.1016/j.atmosres.2011.08.013

A. Karanasiou, X. Querol, A. Alastuey, N. Perez, J. Pey et al., Particulate matter and gaseous pollutants in the Mediterranean Basin: Results from the MED-PARTICLES project, Science of The Total Environment, vol.488, issue.489, pp.488-489, 2014.
DOI : 10.1016/j.scitotenv.2014.04.096

S. Kecorius, N. Kivekäs, A. Kristensson, T. Tuch, D. S. Covert et al., Significant increase of aerosol number concentrations in air masses crossing a densely trafficked sea area, Oceanologia, pp.1-12, 2016.

M. B. Korras-carraca, N. Hatzianastassiou, C. Matsoukas, A. Gkikas, and C. D. Papadimas, The regime of aerosol asymmetry parameter over Europe, the Mediterranean and the Middle East based on MODIS satellite data: evaluation against surface AERONET measurements, Atmospheric Chemistry and Physics, vol.15, issue.22, pp.13113-13132, 2015.
DOI : 10.1029/2011JD017181

P. Laj, J. Klausen, M. Bilde, C. Plaß-duelmer, G. Pappalardo et al., Measuring atmospheric composition change, and Zardini, A. A.: Measuring atmospheric composition change, pp.5351-5414, 2009.
DOI : 10.1016/j.atmosenv.2009.08.020

URL : https://hal.archives-ouvertes.fr/hal-00422899

J. Li, B. E. Carlson, O. Dubovik, and A. A. Lacis, Recent trends in aerosol optical properties derived from AERONET measurements, Atmos. Chem. Phys, vol.14105194, pp.12271-12289, 2014.

H. Lihavainen, A. Hyvärinen, E. Asmi, J. Hatakka, and Y. Viisanen, Long-term variability of aerosol optical properties in northern Finland, Boreal Environ. Res, vol.20, pp.526-541, 2015.

H. Lihavainen, E. Asmi, V. Aaltonen, U. Makkonen, and V. Kerminen, Direct radiative feedback due to biogenic secondary organic aerosol estimated from boreal forest site observations, Environmental Research Letters, vol.10, issue.10, pp.1748-9326, 2015.
DOI : 10.1088/1748-9326/10/10/104005

H. Lyamani, F. J. Olmo, A. , and L. , Physical and optical properties of aerosols over an urban location in Spain: seasonal and diurnal variability, Atmospheric Chemistry and Physics, vol.10, issue.1, pp.239-254, 2010.
DOI : 10.5194/acp-10-239-2010

H. Lyamani, F. J. Olmo, I. Foyo, A. , and L. , Black carbon aerosols over an urban area in south-eastern Spain: Changes detected after the 2008 economic crisis, Atmospheric Environment, vol.45, issue.35, pp.6423-6432, 2011.
DOI : 10.1016/j.atmosenv.2011.07.063

H. Lyamani, J. Fernández-gálvez, D. Pérez-ramírez, A. Valenzuela, M. Antón et al., Aerosol properties over two urban sites in South Spain during an extended stagnation episode in winter season, Atmospheric Environment, vol.62, pp.424-432, 2012.
DOI : 10.1016/j.atmosenv.2012.08.050

N. Ma, W. Birmili, T. Müller, T. Tuch, Y. F. Cheng et al., Tropospheric aerosol scattering and absorption over central Europe: a closure study for the dry particle state, Atmos. Chem. Phys, vol.145194, issue.10, pp.6241-6259, 2014.

P. T. Manktelow, G. W. Mann, K. S. Carslaw, D. V. Spracklen, and M. P. Chipperfield, Regional and global trends in sulphate aerosol since the 1980's, Geophys. Res. Lett, vol.34, 2007.

F. Marenco, P. Bonasoni, F. Calzolari, M. Ceriani, M. Chiari et al., Characterization of atmospheric aerosols at Monte Cimone, Italy, during summer 2004: Source apportionment and transport mechanisms, Journal of Geophysical Research, vol.29, issue.335, p.24202, 2006.
DOI : 10.1080/02786820119445

S. F. Marshall, D. S. Covert, and R. J. Charlson, Relationship between asymmetry parameter and hemispheric backscatter ratio: implications for climate forcing by aerosols, Applied Optics, vol.34, issue.27, pp.6306-6311, 1995.
DOI : 10.1364/AO.34.006306

A. Molnár, Z. Bécsi, K. Imre, V. Gácser, Z. Ferenczi et al., Characterization of Background Aerosol Properties during a Wintertime Smog Episode, Aerosol and Air Quality Research, vol.16, issue.8, pp.1793-1804, 2016.
DOI : 10.4209/aaqr.2015.04.0205

T. Müller, A. Nowak, A. Weidensohler, P. Sheridan, M. Laborde et al., Angular Illumination and Truncation of Three Different Integrating Nephelometers: Implications for Empirical, Size-Based Corrections, Aerosol Science and Technology, vol.52, issue.6, pp.581-586, 2009.
DOI : 10.1029/2006JD007568

T. Müller, M. Laborde, G. Kassell, and A. Wiedensohler, Design and performance of a three-wavelength LED-based total scatter and backscatter integrating nephelometer, Atmospheric Measurement Techniques, vol.4, issue.6, pp.1291-1303, 1291.
DOI : 10.5194/amt-4-1291-2011

S. Nyeki, U. Baltensperger, I. Colbeck, D. T. Jost, E. Weingartner et al., The Jungfraujoch high-alpine research station (3454 m) as a background clean continental site for the measurement of aerosol parameters, Journal of Geophysical Research: Atmospheres, vol.29, issue.A, pp.6097-6107, 1998.
DOI : 10.1007/978-1-4615-1817-4_65

S. Nyeki, C. H. Halios, W. Baum, K. Eleftheriadis, H. Flentje et al., Ground-based aerosol optical depth trends at three high-altitude sites in Switzerland and southern Germany from, J. Geophys. Res, 1995.

V. Obiso, M. Pandolfi, M. Ealo, and O. Jorba, Impact of aerosol microphysical properties on mass scattering cross sections, Journal of Aerosol Science, vol.112, pp.68-82, 2017.
DOI : 10.1016/j.jaerosci.2017.03.001

O. Connor, T. C. Jennings, S. G. , O. Dowd, and C. D. , Highlights of fifty years of atmospheric aerosol research at Mace Head, Atmospheric Research, vol.90, issue.2-4, pp.338-355, 2008.
DOI : 10.1016/j.atmosres.2008.08.014

M. Pandolfi, M. Cusack, A. Alastuey, and X. Querol, Variability of aerosol optical properties in the Western Mediterranean Basin, Atmospheric Chemistry and Physics, vol.11, issue.15, pp.8189-8203, 2011.
DOI : 10.5194/acp-10-219-2010

M. Pandolfi, A. Ripoll, X. Querol, A. , and A. , Climatology of aerosol optical properties and black carbon mass absorption cross section at a remote high-altitude site in the western Mediterranean Basin, Atmos. Chem. Phys, vol.145194, issue.10, pp.6443-6460, 2014.

M. Pandolfi, X. Querol, A. Alastuey, J. L. Jimenez, O. Jorba et al., Effects of sources and meteorology on particulate matter in the Western Mediterranean Basin: An overview of the DAURE campaign, Journal of Geophysical Research: Atmospheres, vol.7, issue.1-3, pp.4978-5010, 2014.
DOI : 10.5194/amtd-7-377-2014

M. Pandolfi, A. Alastuey, N. Pérez, C. Reche, I. Castro et al., Trends analysis of PM source contributions and chemical tracers in NE Spain during 2004???2014: a multi-exponential approach, Atmospheric Chemistry and Physics, vol.16, issue.18, pp.11787-11805, 2016.
DOI : 10.5194/acp-16-11787-2016-supplement

J. Pey, X. Querol, A. Alastuey, F. Forastiere, and M. Stafoggia, African dust outbreaks over the Mediterranean Basin during 2001&ndash;2011: PM<sub>10</sub> concentrations, phenomenology and trends, and its relation with synoptic and mesoscale meteorology, Atmospheric Chemistry and Physics Discussions, vol.12, issue.10, pp.1395-1410, 1395.
DOI : 10.5194/acpd-12-28195-2012

J. P. Putaud, F. Raes, R. Van-dingenen, E. Brüggemann, M. C. Facchini et al., A European aerosol phenomenology???2: chemical characteristics of particulate matter at kerbside, urban, rural and background sites in Europe, European aerosol phenomenology ? 2: chemical characteristics of particulate matter at kerbside, urban, rural and background sites in Europe, pp.2579-2595, 2004.
DOI : 10.1016/j.atmosenv.2004.01.041

J. P. Putaud, R. Van-dingenen, A. Alastuey, H. Bauer, W. Birmili et al., A European aerosol phenomenology ??? 3: Physical and chemical characteristics of particulate matter from 60 rural, urban, and kerbside sites across Europe, A European aerosol phenomenology ? 3: physical and chemical characteristics of particulate matter from 60 rural, urban, and kerbside sites across Europe, pp.1308-1320, 2010.
DOI : 10.1016/j.atmosenv.2009.12.011

J. P. Putaud, F. Cavalli, S. Martins-dos-santos, and A. Dell-'acqua, Long-term trends in aerosol optical characteristics in the Po Valley, Italy, Atmospheric Chemistry and Physics, vol.14, issue.17, pp.9129-9136, 2014.
DOI : 10.1016/S0021-8502(03)00359-8

X. Querol, J. Pey, M. Pandolfi, A. Alastuey, M. Cusack et al., African dust contributions to mean ambient PM10 mass-levels across the Mediterranean Basin, Atmospheric Environment, vol.43, issue.28, pp.4266-4277, 2009.
DOI : 10.1016/j.atmosenv.2009.06.013

X. Querol, A. Alastuey, M. Pandolfi, C. Reche, N. Pérez et al., 2001???2012 trends on air quality in Spain, Science of The Total Environment, vol.490, pp.957-969, 2001.
DOI : 10.1016/j.scitotenv.2014.05.074

M. A. Revuelta, B. Artiñano, F. J. Gómez-moreno, M. Viana, C. Reche et al., Ammonia levels in different kinds of sampling sites in the central Iberian Peninsula, Proceedings of the 2nd Iberian Meeting on Aerosol Science an Technology, 2014.

A. Ripoll, J. Pey, M. C. Minguillón, N. Pérez, M. Pandolfi et al., Three years of aerosol mass, black carbon and particle number concentrations at Montsec (southern Pyrenees, 1570 m a.s, Atmos. Chem. Phys, vol.145194, issue.10, pp.4279-4295, 2014.

S. Rodríguez, A. Alastuey, S. Alonso-pérez, X. Querol, E. Cuevas et al., Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer, Atmos. Chem. Phys, vol.115194, issue.10, pp.6663-6685, 2011.

S. Rodríguez, E. Cuevas, J. M. Prospero, A. Alastuey, X. Querol et al., Modulation of Saharan dust export by the North African dipole, Atmospheric Chemistry and Physics, vol.15, issue.13, pp.7471-7486, 2015.
DOI : 10.5194/acp-15-7471-2015-supplement

C. Rose, K. Sellegri, F. Velarde, I. Moreno, K. Weinhold et al., Frequent nucleation events at the high altitude station of Chacaltaya (5240??m a.s.l.), Bolivia, Atmospheric Environment, vol.102, pp.18-29, 2015.
DOI : 10.1016/j.atmosenv.2014.11.015

URL : https://hal.archives-ouvertes.fr/hal-01806671

L. D. Rotstayn, M. A. Collier, A. Chrastansky, S. J. Jeffrey, and J. Luo, Projected effects of declining aerosols in RCP4.5: unmasking global warming?, Atmospheric Chemistry and Physics, vol.13, issue.21, pp.10883-10905, 2013.
DOI : 10.2151/jmsj.2012-A02

G. L. Schuster, O. Dubovik, and B. N. Holben, Angstrom exponent and bimodal aerosol size distributions, Journal of Geophysical Research, vol.19, issue.9, 2006.
DOI : 10.1063/1.882420

J. H. Seinfeld and S. N. Pandis, Atmospheric Chemistry and Physics, 1998.

P. K. Sen, Estimates of the Regression Coefficient Based on Kendall's Tau, Journal of the American Statistical Association, vol.53, issue.324, pp.1379-1389, 1968.
DOI : 10.1214/aoms/1177699164

J. P. Sherman, P. J. Sheridan, J. A. Ogren, E. Andrews, D. Hageman et al., A multiwww .atmos-chem-phys.net, Atmos. Chem. Phys, vol.187877, issue.18, pp.7877-7911, 2018.

M. Pandolfi, A European aerosol, p.6

, year study of lower tropospheric aerosol variability and systematic relationships from four North American regions

, Chem. Phys, vol.155194, pp.12487-12517, 2015.

G. Spindler, E. Brüggemann, T. Gnauk, A. Grüner, K. Müller et al., A four-year size-segregated characterization study of particles PM10, PM2.5 and PM1 depending on air mass origin at Melpitz, Atmospheric Environment, vol.44, issue.2, pp.164-173, 2010.
DOI : 10.1016/j.atmosenv.2009.10.015

A. Stohl, B. Aamaas, M. Amann, L. H. Baker, N. Bellouin et al., Evaluating the climate and air quality impacts of short-lived pollutants, Atmos. Chem. Phys, vol.155194, pp.10529-10566, 2015.
URL : https://hal.archives-ouvertes.fr/insu-01159851

J. Ström, J. Umegård, K. Torseth, P. Tunved, H. C. Hansson et al., One year of particle size distribution and aerosol chemical composition measurements at the Zeppelin Station, Svalbard, March 2000???March 2001, Physics and Chemistry of the Earth, Parts A/B/C, vol.28, issue.28-32, pp.1181-1190, 2000.
DOI : 10.1016/j.pce.2003.08.058

H. Theil, I. Ii, and P. K. Ned, A Rank-Invariant Method of Linear and Polynomial Regression Analysis, Akad. A Math, pp.386-392, 1950.
DOI : 10.1007/978-94-011-2546-8_20

G. Titos, I. Foyo-moreno, H. Lyamani, X. Querol, A. Alastuey et al., Optical properties and chemical composition of aerosol particles at an urban location: An estimation of the aerosol mass scattering and absorption efficiencies, Journal of Geophysical Research: Atmospheres, vol.11, issue.D11, p.4206, 2012.
DOI : 10.5194/acp-11-2603-2011

G. Titos, H. Lyamani, M. Pandolfi, A. Alastuey, A. et al., Identification of fine (PM1) and coarse (PM10-1) sources of particulate matter in an urban environment, Atmospheric Environment, vol.89, pp.593-602, 2014.
DOI : 10.1016/j.atmosenv.2014.03.001

G. Titos, A. Del-Águila, A. Cazorla, H. Lyamani, J. A. Casquero-vera et al., Spatial and temporal variability of carbonaceous aerosols: Assessing the impact of biomass burning in the urban environment, Science of The Total Environment, vol.578, pp.613-625, 2017.
DOI : 10.1016/j.scitotenv.2016.11.007

K. Tørseth, W. Aas, K. Breivik, A. M. Fjaeraa, M. Fiebig et al., Introduction to the European Monitoring and Evaluation Programme (EMEP) and observed atmospheric composition change during, Atmos. Chem. Phys, vol.125194, issue.10, pp.5447-5481, 1972.

P. Tunved, H. Hansson, V. Kerminen, J. Ström, M. Dal-maso et al., High Natural Aerosol Loading over Boreal Forests, High natural aerosol loading over boreal forests, pp.261-263, 2006.
DOI : 10.1126/science.1123052

A. Vaishya, S. G. Jennings, O. Dowd, and C. , Seasonal Variation of the Aerosol Light Scattering Coefficient in Marine Air of the Northeast Atlantic, Advances in Meteorology, vol.59, issue.3, part 1, 2011.
DOI : 10.1098/rsta.2007.2043

A. Vaishya, S. G. Jennings, O. Dowd, and C. , Wind driven influences on aerosol light scattering in northeast Atlantic air, Geophys. Res. Lett, 2012.

A. Valenzuela, F. J. Olmo, H. Lyamani, M. Antón, G. Titos et al., Aerosol scattering and absorption Angstr??m exponents as indicators of dust and dust-free days over Granada (Spain), Atmospheric Research, vol.154, pp.1-13, 2015.
DOI : 10.1016/j.atmosres.2014.10.015

R. Van-dingenen, J. P. Putaud, F. Raes, U. Baltensperger, A. Charron et al., A European aerosol phenomenology_1: physical characteristics of particulate matter at kerbside, urban, rural and background sites in Europe Global estimates of exposure to fine particulate matter concentrations from satellite-based aerosol optical depth, Atmos. Environ. Environ. Health Persp, vol.38, issue.118, pp.2561-2577, 2004.

H. Venzac, K. Sellegri, P. Villani, D. Picard, and P. Laj, Seasonal variation of aerosol size distributions in the free troposphere and residual layer at the puy de D??me station, France, Atmospheric Chemistry and Physics, vol.9, issue.4, pp.1465-1478, 1465.
DOI : 10.5194/acp-9-1465-2009

A. Virkkula, J. Backman, P. P. Aalto, M. Hulkkonen, L. Riuttanen et al., Seasonal cycle, size dependencies , and source analyses of aerosol optical properties at the SMEAR II measurement station in Hyytiälä, Finland, Atmos. Chem. Phys, vol.115194, issue.10, pp.4445-4468, 2011.

M. Vrekoussis, E. Liakakou, M. Koc-ak, N. Kubilay, K. Sciare et al., Seasonal variability of optical properties of aerosols in the Eastern Mediterranean, Atmospheric Environment, vol.39, issue.37, pp.7083-7094, 2005.
DOI : 10.1016/j.atmosenv.2005.08.011

, WMO: WMO/GAW report 227: Aerosol Measurement Procedures , Guidelines and Recommendations, 2nd Edn., 103 pp, 2016.

M. Zanatta, M. Gysel, N. Bukowiecki, T. Müller, E. Weingartner et al., A European aerosol phenomenology-5: Climatology of black carbon optical properties at 9 regional background sites across Europe, Atmospheric Environment, vol.145, pp.346-364, 2016.
DOI : 10.1016/j.atmosenv.2016.09.035

P. Zieger, R. Fierz-schmidhauser, M. Gysel, J. Ström, S. Henne et al., Effects of relative humidity on aerosol light scattering in the Arctic, Atmospheric Chemistry and Physics, vol.10, issue.8, pp.3875-3890, 2010.
DOI : 10.5194/acp-10-3875-2010

P. Zieger, E. Kienast-sjögren, M. Starace, J. Von-bismarck, N. Bukowiecki et al., Spatial variation of aerosol optical properties around the high-alpine site Jungfraujoch (3580 m a.s, Atmos. Chem. Phys, vol.125194, issue.10, pp.7231-7249, 2012.

P. Zieger, R. Fierz-schmidhauser, L. Poulain, T. Müller, W. Birmili et al., Influence of water uptake on the aerosol particle light scattering coefficients of the Central European aerosol, Tellus B: Chemical and Physical Meteorology, vol.11, issue.5, 2014.
DOI : 10.5194/acp-11-2603-2011

P. Zieger, O. Väisänen, J. C. Corbin, D. G. Partridge, S. Bastelberger et al., Revising the hygroscopicity of inorganic sea salt particles, Nature Communications, vol.16, p.15883, 2017.
DOI : 10.5194/acp-16-2765-2016