149 citations as recorded by crossref.

1. Vertical and horizontal distribution of submicron aerosol chemical composition and physical characteristics across northern India during pre-monsoon and monsoon seasons J. Brooks et al. 10.5194/acp-19-5615-2019
2. Method to quantify black carbon aerosol light absorption enhancement with a mixing state index G. Zhao et al. 10.5194/acp-21-18055-2021
3. Insights into atmospheric trace gases, aerosols, and transport processes at a high-altitude station (2623 m a.s.l.) in Northeast Asia Y. Shan et al. 10.1016/j.atmosenv.2024.120482
4. Optical properties and cloud condensation nuclei activity of brown carbon containing α–dicarbonyls and reduced nitrogen compounds J. Zhou et al. 10.1016/j.atmosres.2023.106935
5. Augmentation of fine-mode anthropogenic aerosols over a tropical coastal site in India adjoining Eastern Arabian Sea: Potential sources and direct radiative effects A. Sen et al. 10.1016/j.atmosres.2024.107889
6. Performance Analysis of Light-weight Scattering Coefficient Counter with AURORA 3000 Nephelometer over Delhi A. Ahlawat et al. 10.1007/s12647-019-00361-5
7. Characterization of In Situ Aerosol Optical Properties at Three Observatories in the Central Mediterranean A. Donateo et al. 10.3390/atmos9100369
8. A polarized scanning nephelometer for measurement of light scattering of an ensemble-averaged matrix of aerosol particles Q. Hu et al. 10.1016/j.jqsrt.2020.107497
9. Development of a new correction algorithm applicable to any filter-based absorption photometer H. Li et al. 10.5194/amt-13-2865-2020
10. Evolution of the Complex Refractive Index of Secondary Organic Aerosols during Atmospheric Aging Q. He et al. 10.1021/acs.est.7b05742
11. Evaluating biases in filter-based aerosol absorption measurements using photoacoustic spectroscopy N. Davies et al. 10.5194/amt-12-3417-2019
12. The Impacts of Dust Storms With Different Transport Pathways on Aerosol Chemical Compositions and Optical Hygroscopicity of Fine Particles in the Yangtze River Delta X. Song et al. 10.1029/2023JD039679
13. Saharan dust, convective lofting, aerosol enhancement zones, and potential impacts on ice nucleation in the tropical upper troposphere C. Twohy et al. 10.1002/2017JD026933
14. Influence of air mass origins on optical properties and PM concentrations measured at a high mountain station located in the southwestern Mediterranean R. Castañer et al. 10.1016/j.atmosres.2017.07.013
15. Three-years monitoring of PM2.5 and scattering coefficients in Shanghai, China L. Zhang et al. 10.1016/j.chemosphere.2020.126613
16. Multidecadal trend analysis of in situ aerosol radiative properties around the world M. Collaud Coen et al. 10.5194/acp-20-8867-2020
17. Advances in Nephelometry through the Ecotech Aurora Nephelometer S. Chamberlain-Ward & F. Sharp 10.1100/2011/310769
18. Role of spheroidal particles in closure studies for aerosol microphysical–optical properties M. Sorribas et al. 10.1002/qj.2557
19. A global analysis of climate-relevant aerosol properties retrieved from the network of Global Atmosphere Watch (GAW) near-surface observatories P. Laj et al. 10.5194/amt-13-4353-2020
20. Characterising Brazilian biomass burning emissions using WRF-Chem with MOSAIC sectional aerosol S. Archer-Nicholls et al. 10.5194/gmd-8-549-2015
21. Impact of aerosol particle sources on optical properties in urban, regional and remote areas in the north-western Mediterranean M. Ealo et al. 10.5194/acp-18-1149-2018
22. The Impact of Intense Winter Saharan Dust Events on PM and Optical Properties at Urban Sites in the Southeast of the Iberian Peninsula A. López-Caravaca et al. 10.3390/atmos12111469
23. South African EUCAARI measurements: seasonal variation of trace gases and aerosol optical properties L. Laakso et al. 10.5194/acp-12-1847-2012
24. A novel method for deriving the aerosol hygroscopicity parameter based only on measurements from a humidified nephelometer system Y. Kuang et al. 10.5194/acp-17-6651-2017
25. Solar eclipse of 20 March 2015 and impacts on irradiance, meteorological parameters, and aerosol properties over southern Italy S. Romano et al. 10.1016/j.atmosres.2017.08.001
26. The effect of black carbon aging from NO2 oxidation of SO2 on its morphology, optical and hygroscopic properties F. Zhang et al. 10.1016/j.envres.2022.113238
27. A global study of hygroscopicity-driven light-scattering enhancement in the context of other in situ aerosol optical properties G. Titos et al. 10.5194/acp-21-13031-2021
28. Detailed characterization of the CAPS single-scattering albedo monitor (CAPS PMssa) as a field-deployable instrument for measuring aerosol light absorption with the extinction-minus-scattering method R. Modini et al. 10.5194/amt-14-819-2021
29. Combination of PM optical and chemical properties to estimate the contribution of non-BC absorbers to light absorption at a remote site A. López-Caravaca et al. 10.1016/j.atmosres.2021.106000
30. The vertical distribution of biomass burning pollution over tropical South America from aircraft in situ measurements during SAMBBA E. Darbyshire et al. 10.5194/acp-19-5771-2019
31. Determination of the refractive index of ambient aerosols G. Zhao et al. 10.1016/j.atmosenv.2020.117800
32. DNI and slant path transmittance for the solar resource of tower thermal solar plants: The validation of the ASoRA method and impact in exploiting a global data set T. Elias et al. 10.1016/j.solener.2020.12.064
33. Low hygroscopicity of ambient fresh carbonaceous aerosols from pyrotechnics smoke C. Carrico et al. 10.1016/j.atmosenv.2018.01.024
34. Aerosol optical properties at SORPES in Nanjing, east China Y. Shen et al. 10.5194/acp-18-5265-2018
35. Columnar and ground-level aerosol optical properties: sensitivity to the transboundary pollution, daily and weekly patterns, and relationships M. Perrone et al. 10.1007/s11356-015-4850-7
36. Assessment of the COVID-19 Lockdown Effects on Spectral Aerosol Scattering and Absorption Properties in Athens, Greece D. Kaskaoutis et al. 10.3390/atmos12020231
37. Classifying aerosol particles through the combination of optical and physical-chemical properties: Results from a wintertime campaign in Rome (Italy) S. Valentini et al. 10.1016/j.atmosres.2019.104799
38. Climatology of aerosol optical properties and black carbon mass absorption cross section at a remote high-altitude site in the western Mediterranean Basin M. Pandolfi et al. 10.5194/acp-14-6443-2014
39. Reliability analysis of a newly developed detector for monitoring spine health T. Li et al. 10.1016/j.microrel.2017.05.026
40. Vertically resolved aerosol variability at the Amazon Tall Tower Observatory under wet-season conditions M. Franco et al. 10.5194/acp-24-8751-2024
41. The influence of the baseline drift on the resulting extinction values of a cavity attenuated phase shift-based extinction monitor (CAPS PMex) S. Pfeifer et al. 10.5194/amt-13-2161-2020
42. The "dual-spot" Aethalometer: an improved measurement of aerosol black carbon with real-time loading compensation L. Drinovec et al. 10.5194/amt-8-1965-2015
43. Comparing black-carbon- and aerosol-absorption-measuring instruments – a new system using lab-generated soot coated with controlled amounts of secondary organic matter D. Kalbermatter et al. 10.5194/amt-15-561-2022
44. Simulation of African dust properties and radiative effects during the 2015 SHADOW campaign in Senegal J. Péré et al. 10.1016/j.atmosres.2017.07.027
45. Reduction of Air Pollution in Poland in Spring 2020 during the Lockdown Caused by the COVID-19 Pandemic P. Grzybowski et al. 10.3390/rs13183784
46. Impact of long-range transport on black carbon source contribution and optical aerosol properties in two urban environments A. Minderytė et al. 10.1016/j.heliyon.2023.e19652
47. Absorption instruments inter-comparison campaign at the Arctic Pallas station E. Asmi et al. 10.5194/amt-14-5397-2021
48. Comparative assessment of GRASP algorithm for a dust event over Granada (Spain) during ChArMEx-ADRIMED 2013 campaign J. Benavent-Oltra et al. 10.5194/amt-10-4439-2017
49. The light absorbing and molecule characteristic of PM2.5 brown carbon observed in urban Shanghai Z. Bai et al. 10.1016/j.envpol.2022.120874
50. Atmospheric heating in the US from saharan dust: Tracking the June 2020 event with surface and satellite observations M. Mehra et al. 10.1016/j.atmosenv.2023.119988
51. Detection of Saharan dust and biomass burning events using near-real-time intensive aerosol optical properties in the north-western Mediterranean M. Ealo et al. 10.5194/acp-16-12567-2016
52. Measurement report: The effect of aerosol chemical composition on light scattering due to the hygroscopic swelling effect R. Ren et al. 10.5194/acp-21-9977-2021
53. An Exploratory Approach Using Regression and Machine Learning in the Analysis of Mass Absorption Cross Section of Black Carbon Aerosols: Model Development and Evaluation H. Li & A. May 10.3390/atmos11111185
54. Long-term airborne measurements of pollutants over the United Kingdom to support air quality model development and evaluation A. Mynard et al. 10.5194/amt-16-4229-2023
55. Higher absorption enhancement of black carbon in summer shown by 2-year measurements at the high-altitude mountain site of Pic du Midi Observatory in the French Pyrenees S. Tinorua et al. 10.5194/acp-24-1801-2024
56. Single scattering properties of non-spherical hydrosols modeled by spheroids L. Mukherjee et al. 10.1364/OE.26.00A124
57. Soluble iron nutrients in Saharan dust over the central Amazon rainforest J. Rizzolo et al. 10.5194/acp-17-2673-2017
58. Observations of relative humidity effects on aerosol light scattering in the Yangtze River Delta of China L. Zhang et al. 10.5194/acp-15-8439-2015
59. Investigation of hygroscopic growth effect on aerosol scattering coefficient at a rural site in the southern North China Plain Y. Wu et al. 10.1016/j.scitotenv.2017.04.194
60. Portable device to determine particle asymmetry parameter Y. Heinson et al. 10.1364/OE.27.010152
61. Predicting cloud condensation nuclei number concentration based on conventional measurements of aerosol properties in the North China Plain Y. Zhang et al. 10.1016/j.scitotenv.2020.137473
62. Numerical scattering simulations for estimating soot aggregate morphology from nephelometer scattering measurements A. Karlsson et al. 10.1016/j.jaerosci.2021.105828
63. 2014 iAREA campaign on aerosol in Spitsbergen – Part 1: Study of physical and chemical properties J. Lisok et al. 10.1016/j.atmosenv.2016.05.051
64. Aerosol optical properties at rural background area in Western Saudi Arabia H. Lihavainen et al. 10.1016/j.atmosres.2017.07.019
65. Joint increase of aerosol scattering efficiency and aerosol hygroscopicity aggravate visibility impairment in the North China Plain B. Xue et al. 10.1016/j.scitotenv.2022.156279
66. Impact of aerosol–radiation interaction on new particle formation G. Zhao et al. 10.5194/acp-21-9995-2021
67. Daytime and nighttime chemical and optical properties of fine and coarse particles at a central Mediterranean coastal site M. Perrone et al. 10.1007/s11356-021-18173-z
68. Pollution severity-dependent aerosol light scattering enhanced by inorganic species formation in Beijing haze Q. Ma et al. 10.1016/j.scitotenv.2020.137545
69. Drivers controlling black carbon temporal variability in the lower troposphere of the European Arctic S. Gilardoni et al. 10.5194/acp-23-15589-2023
70. Generation and UV-VIS-NIR spectral responses of organo-mineral aerosol for modelling soil derived dust N. Utry et al. 10.1016/j.atmosenv.2017.01.012
71. Biomass burning and urban emission impacts in the Andes Cordillera region based on in situ measurements from the Chacaltaya observatory, Bolivia (5240 m a.s.l.) A. Chauvigné et al. 10.5194/acp-19-14805-2019
72. Development and validation of a CCD-laser aerosol detective system for measuring the ambient aerosol phase function Y. Bian et al. 10.5194/amt-10-2313-2017
73. An Investigation of Aerosol Scattering and Absorption Properties in Wuhan, Central China W. Gong et al. 10.3390/atmos6040503
74. Characteristics of ozone and particles in the near-surface atmosphere in the urban area of the Yangtze River Delta, China H. Chen et al. 10.5194/acp-19-4153-2019
75. Observations of Manaus urban plume evolution and interaction with biogenic emissions in GoAmazon 2014/5 G. Cirino et al. 10.1016/j.atmosenv.2018.08.031
76. Unexpected Biomass Burning Aerosol Absorption Enhancement Explained by Black Carbon Mixing State C. Denjean et al. 10.1029/2020GL089055
77. Biomass burning aerosols in most climate models are too absorbing H. Brown et al. 10.1038/s41467-020-20482-9
78. Overview of the SLOPE I and II campaigns: aerosol properties retrieved with lidar and sun–sky photometer measurements J. Benavent-Oltra et al. 10.5194/acp-21-9269-2021
79. Black and brown carbon over central Amazonia: long-term aerosol measurements at the ATTO site J. Saturno et al. 10.5194/acp-18-12817-2018
80. Characterization and parameterization of aerosol cloud condensation nuclei activation under different pollution conditions H. Che et al. 10.1038/srep24497
81. Integration of optical and chemical parameters to improve the particulate matter characterization M. Perrone et al. 10.1016/j.atmosres.2018.02.015
82. Marine boundary layer aerosol in the eastern North Atlantic: seasonal variations and key controlling processes G. Zheng et al. 10.5194/acp-18-17615-2018
83. Retrieval of aerosol properties from ceilometer and photometer measurements: long-term evaluation with in situ data and statistical analysis at Montsec (southern Pyrenees) G. Titos et al. 10.5194/amt-12-3255-2019
84. Intensive optical parameters of pollution sources identified by the positive matrix factorization technique S. Romano et al. 10.1016/j.atmosres.2020.105029
85. Relating hygroscopicity and optical properties to chemical composition and structure of secondary organic aerosol particles generated from the ozonolysis of α-pinene C. Denjean et al. 10.5194/acp-15-3339-2015
86. Evaluating the PurpleAir monitor as an aerosol light scattering instrument J. Ouimette et al. 10.5194/amt-15-655-2022
87. On the interpretation of the loading correction of the aethalometer A. Virkkula et al. 10.5194/amt-8-4415-2015
88. Six-year observations of aerosol optical properties at a southern African grassland savannah site M. Venter et al. 10.1016/j.atmosenv.2020.117477
89. Impact of particle size, refractive index, and shape on the determination of the particle scattering coefficient – an optical closure study evaluating different nephelometer angular truncation and illumination corrections M. Teri et al. 10.5194/amt-15-3161-2022
90. Optical Properties of Secondary Organic Aerosols and Their Changes by Chemical Processes T. Moise et al. 10.1021/cr5005259
91. Aerosol characteristics and types in the marine environments surrounding the East Mediterranean - Middle East (EMME) region during the AQABA campaign D. Kaskaoutis et al. 10.1016/j.atmosenv.2023.119633
92. Revisiting integrating nephelometer measurements W. Malm et al. 10.1016/j.atmosenv.2023.120237
93. Deriving composition-dependent aerosol absorption, scattering and extinction mass efficiencies from multi-annual high time resolution observations in Northern France A. Velazquez-Garcia et al. 10.1016/j.atmosenv.2023.119613
94. Variability of aerosol optical properties in the Western Mediterranean Basin M. Pandolfi et al. 10.5194/acp-11-8189-2011
95. Overview of the NOAA/ESRL Federated Aerosol Network E. Andrews et al. 10.1175/BAMS-D-17-0175.1
96. A new parameterization scheme for the real part of the ambient urban aerosol refractive index G. Zhao et al. 10.5194/acp-19-12875-2019
97. Contribution of black carbon and desert dust to aerosol absorption in the atmosphere of the Eastern Arabian Peninsula M. Mahfouz et al. 10.1016/j.atmosenv.2024.120427
98. Measurements of particle number size distributions and optical properties in urban Shanghai during 2010 World Expo: relation to air mass history Z. Wang et al. 10.3402/tellusb.v66.22319
99. Aircraft vertical profiles during summertime regional and Saharan dust scenarios over the north-western Mediterranean basin: aerosol optical and physical properties J. Yus-Díez et al. 10.5194/acp-21-431-2021
100. African volcanic emissions influencing atmospheric aerosols over the Amazon rain forest J. Saturno et al. 10.5194/acp-18-10391-2018
101. The impact of moderately absorbing aerosol on surface sensible, latent, and net radiative fluxes during the summer of 2015 in Central Europe K. Markowicz et al. 10.1016/j.jaerosci.2020.105627
102. Comparison and complementary use of in situ and remote sensing aerosol measurements in the Athens Metropolitan Area S. Vratolis et al. 10.1016/j.atmosenv.2020.117439
103. Assessment of the aerosol optics component of the coupled WRF–CMAQ model using CARES field campaign data and a single column model C. Gan et al. 10.1016/j.atmosenv.2014.11.028
104. MOPSMAP v1.0: a versatile tool for the modeling of aerosol optical properties J. Gasteiger & M. Wiegner 10.5194/gmd-11-2739-2018
105. Estimation of aerosol particle number distribution with Kalman Filtering – Part 2: Simultaneous use of DMPS, APS and nephelometer measurements T. Viskari et al. 10.5194/acp-12-11781-2012
106. Ozone and particulate matter enhancements from regional wildfires observed at Mount Bachelor during 2004–2011 N. Wigder et al. 10.1016/j.atmosenv.2013.04.026
107. Irradiance Impact on Pollution by Integrating Nephelometer Measurements M. Perrone et al. 10.3390/atmos6121836
108. A Decade of Poland-AOD Aerosol Research Network Observations K. Markowicz et al. 10.3390/atmos12121583
109. A 2-year intercomparison of three methods for measuring black carbon concentration at a high-altitude research station in Europe S. Tinorua et al. 10.5194/amt-17-3897-2024
110. Particle optical properties at a Central Mediterranean site: Impact of advection routes and local meteorology M. Perrone et al. 10.1016/j.atmosres.2014.03.029
111. Observational study of aerosol hygroscopic growth on scattering coefficient in Beijing: A case study in March of 2018 C. Xia et al. 10.1016/j.scitotenv.2019.05.283
112. Synergy between Short-Range Lidar and In Situ Instruments for Determining the Atmospheric Boundary Layer Lidar Ratio A. Bedoya-Velásquez et al. 10.3390/rs16091583
113. A Method of Inversing Dynamic Aerosol Extinction-to-Backscattering Ratio Based on Lidar Echo Signal and Ground Aerosol Extinction Coefficient or Aerosol Optical Depth C. Zhang et al. 10.1109/TGRS.2022.3152902
114. Optical properties of PM2.5 particles: Results from a monitoring campaign in southeastern Italy S. Romano et al. 10.1016/j.atmosenv.2019.01.037
115. Characterization of Aerosol Physical and Optical Properties at the Observatoire Pérenne de l’Environnement (OPE) Site A. Farah et al. 10.3390/atmos11020172
116. Five Years of Dust Episodes at the Southern Italy GAW Regional Coastal Mediterranean Observatory: Multisensors and Modeling Analysis C. Calidonna et al. 10.3390/atmos11050456
117. Evaluation of Two Low-Cost Optical Particle Counters for the Measurement of Ambient Aerosol Scattering Coefficient and Ångström Exponent K. Markowicz & M. Chiliński 10.3390/s20092617
118. Saharan dust impact on the chemical composition of PM10 and PM1 samples over south-eastern Italy M. Perrone et al. 10.1007/s12517-015-2227-3
119. Long-term observations of aerosol optical properties at three GAW regional sites in the Central Mediterranean A. Donateo et al. 10.1016/j.atmosres.2020.104976
120. Rapid and sensitive detection of miRNA via light scatter-aided emulsion-based isothermal amplification using a custom low-cost device T. Hertenstein et al. 10.1016/j.bios.2023.115444
121. Parameterization of the Aerosol Upscatter Fraction as Function of the Backscatter Fraction and Their Relationships to the Asymmetry Parameter for Radiative Transfer Calculations H. Moosmüller & J. Ogren 10.3390/atmos8080133
122. Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula E. Asmi et al. 10.1080/16000889.2017.1414571
123. Calculating the aerosol asymmetry factor based on measurements from the humidified nephelometer system G. Zhao et al. 10.5194/acp-18-9049-2018
124. A method to obtain scattering phase function based on particle size distribution and refractive index retrieved from Aurora 4000 multi-angle scattering measurements: A numerical study L. Ran et al. 10.1016/j.atmosenv.2023.120138
125. Estimation of TOA flux and radiance based on the angular distribution of aerosol light scattering measurements S. Jana et al. 10.1016/j.jqsrt.2025.109365
126. Comparison of different Aethalometer correction schemes and a reference multi-wavelength absorption technique for ambient aerosol data J. Saturno et al. 10.5194/amt-10-2837-2017
127. Peplospheric Influences on Local Greenhouse Gas and Aerosol Variability at the Lamezia Terme WMO/GAW Regional Station in Calabria, Southern Italy: A Multiparameter Investigation F. D’Amico et al. 10.3390/su162310175
128. Size distribution and optical properties of mineral dust aerosols transported in the western Mediterranean C. Denjean et al. 10.5194/acp-16-1081-2016
129. New correction method for the scattering coefficient measurements of a three-wavelength nephelometer J. Qiu et al. 10.5194/amt-14-4879-2021
130. Dust aerosol characterization and transport features based on combined ground-based, satellite and model-simulated data K. Vijayakumar et al. 10.1016/j.aeolia.2016.03.003
131. Calculating ambient aerosol surface area concentrations using aerosol light scattering enhancement measurements Y. Kuang et al. 10.1016/j.atmosenv.2019.116919
132. Differences in aerosol absorption Ångström exponents between correction algorithms for a particle soot absorption photometer measured on the South African Highveld J. Backman et al. 10.5194/amt-7-4285-2014
133. A global view on the effect of water uptake on aerosol particle light scattering M. Burgos et al. 10.1038/s41597-019-0158-7
134. A novel method for calculating ambient aerosol liquid water content based on measurements of a humidified nephelometer system Y. Kuang et al. 10.5194/amt-11-2967-2018
135. Experimental Investigation of Immunoglobulin and Complement Concentrations in Exposure to IVIG, HBIG, Rituximab, Tocilizumab, and Bevacizumab M. Caglayan & A. Gonel 10.2174/1570180819666220804105533
136. Aerosol variability induced by atmospheric dynamics in a coastal area of Senegal, North-Western Africa S. Crumeyrolle et al. 10.1016/j.atmosenv.2019.01.041
137. Mobile On-Road Measurements of Aerosol Optical Properties during MOABAI Campaign in the North China Plain I. Popovici et al. 10.3390/atmos13010021
138. Multi-spectral nephelometer characterization of urban aerosols P. Devara et al. 10.1016/j.measurement.2020.107471
139. Effects of different correction algorithms on absorption coefficient – a comparison of three optical absorption photometers at a boreal forest site K. Luoma et al. 10.5194/amt-14-6419-2021
140. Identification of key aerosol populations through their size and composition resolved spectral scattering and absorption F. Costabile et al. 10.5194/acp-13-2455-2013
141. Comparison of Columnar, Surface, and UAS Profiles of Absorbing Aerosol Optical Depth and Single-Scattering Albedo in South-East Poland M. Chiliński et al. 10.3390/atmos10080446
142. Determination of the multiple-scattering correction factor and its cross-sensitivity to scattering and wavelength dependence for different AE33 Aethalometer filter tapes: a multi-instrumental approach J. Yus-Díez et al. 10.5194/amt-14-6335-2021
143. Low hygroscopic scattering enhancement of boreal aerosol and the implications for a columnar optical closure study P. Zieger et al. 10.5194/acp-15-7247-2015
144. Analysis of aerosol scattering properties and PM10 concentrations at a mountain site influenced by mineral dust transport J. Nicolás et al. 10.1016/j.atmosenv.2019.06.017
145. A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites M. Pandolfi et al. 10.5194/acp-18-7877-2018
146. Relationship between the planetary boundary layer height and the particle scattering coefficient at the surface M. Perrone & S. Romano 10.1016/j.atmosres.2018.04.017
147. The Effects of Local Pollution and Transport Dust on Aerosol Properties in Typical Arid Regions of Central Asia during DAO-K Measurement Y. Wei et al. 10.3390/atmos13050729
148. Increase in precipitation scavenging contributes to long-term reductions of light-absorbing aerosol in the Arctic D. Heslin-Rees et al. 10.5194/acp-24-2059-2024
149. Variability of aerosol optical properties in the Western Mediterranean Basin M. Pandolfi et al. 10.5194/acpd-11-14091-2011