tion Measurements Due to Organic Aerosol Loading: Evidence from Ambient Measurement, Aerosol Sci. Tech., 42, 1033–1041, 2008.

Laj, P., Bigi, A., Rose, C., Andrews, E., Lund Myhre, C., Col-
laud Coen, M., Wiedensohler, A., Schultz, M., Ogren, J. A.,
Fiebig, M., Gliß, J., Mortier, A., Pandolfi, M., Petäjä, T., Kim,
S.-W., Aas, W., Putaud, J.-P., Mayol-Bracero, O., Keywood,
M., Labrador, L., Aalto, P., Ahlberg, E., Alados Arboledas, L.,
Alastuey, A., Andrade, M., Artiñano, B., Ausmeel, S., Arsov, T.,
Asmi, E., Backman, J., Baltensperger, U., Bastian, S., Bath, O.,
Beukes, J. P., Brem, B. T., Bukowiecki, N., Conil, S., Couret,
C., Day, D., Dayantolis, W., Degorska, A., Dos Santos, S. M.,
Eleftheriadis, K., Fetfatzis, P., Favez, O., Flentje, H., Gini, M. I.,
Gregorič, A., Gysel-Beer, M., Hallar, G. A., Hand, J., Hoffer, A.,
Hueglin, C., Hooda, R. K., Hyvärinen, A., Kalapov, I., Kalivitis,
N., Kasper-Giebl, A., Kim, J. E., Kouvarakis, G., Kranjc, I., Kre-
jci, R., Kulmala, M., Labuschagne, C., Lee, H.-J., Lihavainen,
H., Lin, N.-H., Löschau, G., Luoma, K., Marinoni, A., Mein-
hardt, F., Merkel, M., Metzger, J.-M., Mihalopoulos, N., Nguyen,
N. A., Ondracek, J., Peréz, N., Perrone, M. R., Petit, J.-E., Pi-
card, D., Pichon, J.-M., Pont, V., Prats, N., Prenni, A., Reisen,
F., Romano, S., Sellegri, K., Sharma, S., Schauer, G., Sheridan,
P., Sherman, J. P., Schütze, M., Schwerin, A., Sohmer, R., Sor-
ribas, M., Steinbacher, M., Sun, J., Titos, G., Tokzko, B., Tuch,
T., Tulet, P., Tunved, P., Vakkari, V., Velarde, F., Velasquez, P.,
Villani, P., Vratolis, S., Wang, S.-H., Weinhold, K., Weller, R.,
Yela, M., Yus-Diez, J., Zdimal, V., Zieger, P., and Zikova, N.: A
global analysis of climate-relevant aerosol properties retrieved
from the network of GAW near-surface observatories, Atmos.
Meas. Tech. Discuss., https://doi.org/10.5194/amt-2019-499, in
review, 2020.

Landrigan, P. J., Fuller, R., Acosta, N. J. R., Adeyi, O., Arnold,
R., Basu, N., Baldé, A., Bertollini, R., Bose-O'Reilly, S., Bouf-
ford, J. I., Breysse, P. N., Chiles, T., Mahidol, C., Coll-Seck,
A. M., Cropper, M. L., Fobil, J., Fuster, V., Greenstone, M.,
Haines, A., Hanrahan, D., Hunter, D., Khare, M., Krupnick,
A., Lanphear, B., Lohani, B., Martin, K., Mathiasen, K. V.,
McTeer, M. A., Murray, C. J. L., Ndahimananjara, J. D., Per-
era, F., Potočnik, J., Preker, A. S., Ramesh, J., Rockström, J.,
Salinas, C., Samson, L. D., Sanilya, K., Sly, P. D., Smith, K.
R., Steiner, A., Stewart, R. B., Suk, W. A., van Schayck, O.
C., Yadama, G. N., Yumkella, K., and Zhong, M: The Lancet
Commission on pollution and health, The Lancet, 391, 462–512,
https://doi.org/10.1016/S0140-6736(17)32345-0, 2018.

Li, C., Martin, R. V., Boys, B. L., van Donkelaar, A., and Ruzzante, S.: Evaluation and application of multi-decadal visibility data for trend analysis of atmospheric haze, Atmos. Chem. Phys., 16, 2435–2457, https://doi.org/10.5194/acp-16-2435-2016, 2016.

Li, C., Martin, R. V., Van Donkelaar, A., Boys, B. L., Hammer, M. S., Xu, J. W., Marais, E. A., Reff, A., Strum, M., Ridley, D. A., Crippa, M., Brauer, M., and Zhang, Q.: Trends in Chemical Composition of Global and Regional Population-Weighted Fine Particulate Matter Estimated for 25 Years, Environ. Sci. Tech., 51, 11185–11195, https://doi.org/10.1021/acs.est.7b02530, 2017.

Li, J., Carlson, B. E., Dubovik, O., and Lacis, A. A.: Recent trends in aerosol optical properties derived from AERONET measurements, Atmos. Chem. Phys., 14, 12271–12289, https://doi.org/10.5194/acp-14-12271-2014, 2014.

Lihavainen, H., Asmi, E., Aaltonen, V., Makkonen, U., and Kermi-
nen, V.-M.: Direct radiative feedback due to biogenic secondary
organic aerosol estimated from boreal forest site observations,
Environ. Res. Lett., 10, 104005, https://doi.org/10.1088/1748-
9326/10/10/104005, 2015a.

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

Lindau, R. and Venema, V. K. C.: The joint influence of break and noise variance on the break detection capability in time series homogenization, Adv. Stat. Clim. Meteorol. Oceanogr., 4, 1–18, https://doi.org/10.5194/ascmo-4-1-2018, 2018.

Liu, C., Chung, C. E., Zhang, F., and Yin, Y.: The colors of biomass burning aerosols in the atmosphere, Sci. Rep., 6, 1–9, https://doi.org/10.1038/srep28267, 2016.

Luoma, K., Virkkula, A., Aalto, P., Petäjä, T., and Kul-
mala, M.: Over a 10-year record of aerosol optical proper-
ties at SMEAR II, Atmos. Chem. Phys., 19, 11363–11382,
https://doi.org/10.5194/acp-19-11363-2019, 2019.

Lyamani, H., Olmo, F. J., and Alados-Arboledas, L.: Light scatter-
ing and absorption properties of aerosol particles in the urban en-
vironment of Granada, Spain, Atmos. Environ., 42, 2630–2642,
2008.

Lyamani, H., Olmo, F. J., Foyo, I., and Alados-Arboledas, L.: Black carbon aerosols over an urban area in south-eastern Spain: changes detected after the 2008 economic crisis, Atmos. Environ., 45, 6423–6432, 2011.

Malm, W. C., Sisler, J. F., Huffman, D., Eldred, R. A., and Cahill, T. A.: Spatial and seasonal trends in particle concentration and optical extinction in the United States, J. Geophys. Res., 99, 1347–1370, https://doi.org/10.1029/93JD02916, 1994.

Malm, W. C., Molenar, J. V., Eldred, R. A., and Sisler, J. F.: Ex-
amining the relationship among atmospheric aerosols and light
scattering and extinction in the Grand Canyon area, J. Geophys.
Res., 101, 19251–19265, 1996.

McClure, C. D. and Jaffe, D. A.: US particulate matter air quality improves except in wildfire-prone areas, P. Natl. Acad. Sci. USA, 115, 7901–7906, https://doi.org/10.1073/pnas.1804353115, 2018.

Mehta, M., Singh, R., Singh, A., Singh, N., and Ansumali: Recent global aerosol optical depth variations and trends – A comparative study using MODIS and MISR level 3 datasets, Remote Sens. Environ., 181, 137–150, 2016.

Molenar, J. V.: Analysis of the real world performance of the Optec NGN-2 ambient nephelometer, Visual Air Quality: Aerosols and Global Radiation Balance, Air and Waste Management Association, Pittsburgh, 243–265, 1997.

Moreira, F., Ascoli, D., Safford, H., Adams, M. A., Moreno, J. M., Pereira, J. M. C., Catry, F. X., Armesto, J., Bond, W., Gonzalez, M., Koutsias, N., McCar, L., Price, O., Pausas, J. G., Rigolot, E., Stephens, S., Tavsanoglu, C., Vallejo, V. R., van Wilgen, B. W., Xanthopoulos, G., and Fernandes, P. M.: Wildfire management in Mediterranean-type regions: paradigm change needed, Environ. Res. Lett., 15, 011001, https://doi.org/10.1088/1748-9326/ab541e, 2020.

Mortier, A., Gliss, J., Schulz, M., Aas, W., Andrews, E., Bian, H., Chin, M., Ginoux, P., Hand, J., Holben, B., Hua, Z., Kipling, Z., Kirkevåg, A., Laj, P., Lurton, T., Myhre, G., Neubauer, D., Olivié, D., von Salzen, K., Takemura, T., and Tilmes, S.: Evalua-
tion of climate model aerosol trends with ground-based observations over the last two decades – an AeroCom and CMIP6 analysis, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2019-1203, in review, 2020.

Mudelsee, M.: Climate Time Series Analysis, Atmospheric and Oceanographic Sciences Library, vol. 42, Springer, Heidelberg, 2010.

Müller, T., Nowak, A., Wiedensohler, A., Sheridan, P., Laborde, M., Covert, D. S., Marinoni, A., Imre, K., Henzing, B., Roger, J.-C., dos Santos, S. M., Wilhelm, R., Wang, Y.-Q., and de Leeuw, G.: Angular Illumination and Truncation of Three Different Integrating Nephelometers: Implications for Empirical, Size-Based Corrections, Aerosol Sci. Tech., 43, 581–586, https://doi.org/10.1080/02786820902798484, 2009.

Müller, T., Henzing, J. S., de Leeuw, G., Wiedensohler, A., Alastuey, A., Angelov, H., Bizjak, M., Collaud Coen, M., Engström, J. E., Gruening, C., Hillamo, R., Hoffer, A., Imre, K., Ivanow, P., Jennings, G., Sun, J. Y., Kalivitis, N., Karlsson, H., Komppula, M., Laj, P., Li, S.-M., Lunder, C., Marinoni, A., Martins dos Santos, S., Moerman, M., Nowak, A., Ogren, J. A., Petzold, A., Pichon, J. M., Rodriquez, S., Sharma, S., Sheridan, P. J., Teinilä, K., Tuch, T., Viana, M., Virkkula, A., Weingartner, E., Wilhelm, R., and Wang, Y. Q.: Characterization and intercomparison of aerosol absorption photometers: result of two intercomparison workshops, Atmos. Meas. Tech., 4, 245–268, https://doi.org/10.5194/amt-4-245-2011, 2011a.

Müller, T., Laborde, M., Kassell, G., and Wiedensohler, A.: Design and performance of a three-wavelength LED-based total scatter and backscatter integrating nephelometer, Atmos. Meas. Tech., 4, 1291–1303, https://doi.org/10.5194/amt-4-1291-2011, 2011b.

Nam, J., Kim, S. W., Park, R. J., Park, J. S., and Park, S. S.: Changes in column aerosol optical depth and ground-level particulate matter concentration over East Asia, Air Quality, Atmos. Health, 11, 49–60, https://doi.org/10.1007/s11869-017-0517-5, 2018.

Nessler, R., Weingartner, E., and Baltensperger, U.: Effect of humidity on aerosol light absorption and its implications for extinction and the single scattering albedo illustrated for a site in the lower free troposphere, J. Aerosol Sci., 36, 958–972, https://doi.org/10.1016/j.jaerosci.2004.11.012, 2005.

Ningombam, S. S., Larson, E. J. L., Dumka, U. C., Estelés, V., Campanelli, M., and Steve, C.: Long-term (1995–2018) aerosol optical depth derived using ground based AERONET and SKYNET measurements from aerosol aged-background sites, Atmos. Poll. Res., 10, 608–620, https://doi.org/10.1016/j.apr.2018.10.008, 2019.

Ogren, J. A.: Comment on “Calibration and Intercomparison of Filter-Based Measurements of Visible Light Absorption by Aerosols, Aerosol Sci. Tech., 44, 589–591, https://doi.org/10.1080/02786826.2010.482111, 2010.

Ogren, J. A., Wendell, J., Andrews, E., and Sheridan, P. J.: Continuous light absorption photometer for long-term studies, Atmos. Meas. Tech., 10, 4805–4818, https://doi.org/10.5194/amt-10-4805-2017, 2017.

Pandolfi, M., Alastuey, A., Pérez, N., Reche, C., Castro, I., Shatalov, V., and Querol, X.: Trends analysis of PM source contributions and chemical tracers in NE Spain during 2004–2014: a multi-exponential approach, Atmos. Chem. Phys., 16, 11787–11805, https://doi.org/10.5194/acp-16-11787-2016, 2016.

Pandolfi, M., Alados-Arboledas, L., Alastuey, A., Andrade, M., Angelov, C., Artiñano, B., Backman, J., Baltensperger, U., Bonasoni, P., Bukowiecki, N., Collaud Coen, M., Conil, S., Coz, E., Crenn, V., Dudoitis, V., Ealo, M., Eleftheriadis, K., Favez, O., Fetfatzis, P., Fiebig, M., Flentje, H., Ginot, P., Gysel, M., Henzing, B., Hoffer, A., Holubova Smejkalova, A., Kalapov, I., Kalivitis, N., Kouvarakis, G., Kristensson, A., Kulmala, M., Lihavainen, H., Lunder, C., Luoma, K., Lyamani, H., Marinoni, A., Mihalopoulos, N., Moerman, M., Nicolas, J., O'Dowd, C., Petäjä, T., Petit, J.-E., Pichon, J. M., Prokopciuk, N., Putaud, J.-P., Rodríguez, S., Sciare, J., Sellegri, K., Swietlicki, E., Titos, G., Tuch, T., Tunved, P., Ulevicius, V., Vaishya, A., Vana, M., Virkkula, A., Vratolis, S., Weingartner, E., Wiedensohler, A., and Laj, P.: A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites, Atmos. Chem. Phys., 18, 7877–7911, https://doi.org/10.5194/acp-18-7877-2018, 2018.

Perry, K. D., Cahill, T. A., Schnell, R. C., and Harris, J. M.: Long-range transport of anthropogenic aerosol to the National Oceanic and Atmospheric Administration baseline station at Mauna Loa Observatory, Hawaii, J. Geophys. Res., 104, 18521–18533, 1999.

Peterson, T. C., Easterling, D. R., Karl, T. R., Groisman, P., Nicholls, N., Plummer, N., Torok, S., Auer, I., Boehm, R., Gullett, D., Vincent, L., Heino, R., Tuomenvirta, H., Mestre, O., Szentimrey, T., Salinger, J., Forland, E., Hanssen-Bauer, I., Alexandersson, H., Jones, P., and Parker, D.: Homogeneity Adjustments of in Situ Atmospheric Climate Data: a Review, Int. J. Climatol., 18, 1493–1517, 1998.

Prenni, A. J., Hand, J. L., Malm, W. C., Copeland, S., Luo, G., Yu, F., Taylor, N., Russell, L. M., and Schichtel, B. A.: An examination of the algorithm for estimating light extinction from IMPROVE particle speciation data, Atmos. Environ., 214, 116880, https://doi.org/10.1016/j.atmosenv.2019.116880, 2019.

Ridley, D. A., Heald, C. L., and Prospero, J. M.: What controls the recent changes in African mineral dust aerosol across the Atlantic?, Atmos. Chem. Phys., 14, 5735–5747, https://doi.org/10.5194/acp-14-5735-2014, 2014.

Rodríguez, S., Alastuey, A., Alonso-Pérez, S., Querol, X., Cuevas, E., Abreu-Afonso, J., Viana, M., Pérez, N., Pandolfi, M., and de la Rosa, J.: Transport of desert dust mixed with North African industrial pollutants in the subtropical Saharan Air Layer, Atmos. Chem. Phys., 11, 6663–6685, https://doi.org/10.5194/acp-11-6663-2011, 2011.

Schmeisser, L., Andrews, E., Ogren, J. A., Sheridan, P., Jefferson, A., Sharma, S., Kim, J. E., Sherman, J. P., Sorribas, M., Kalapov, I., Arsov, T., Angelov, C., Mayol-Bracero, O. L., Labuschagne, C., Kim, S.-W., Hoffer, A., Lin, N.-H., Chia, H.-P., Bergin, M., Sun, J., Liu, P., and Wu, H.: Classifying aerosol type using in situ surface spectral aerosol optical properties, Atmos. Chem. Phys., 17, 12097–12120, https://doi.org/10.5194/acp-17-12097-2017, 2017.

Schmeisser, L., Backman, J., Ogren, J. A., Andrews, E., Asmi, E., Starkweather, S., Uttal, T., Fiebig, M., Sharma, S., Eleftheriadis, K., Vratolis, S., Bergin, M., Tunved, P., and Jefferson, A.: Seasonality of aerosol optical properties in the Arctic, Atmos. Chem. Phys., 18, 11599–11622, https://doi.org/10.5194/acp-18-11599-2018, 2018.
Schuster, G. L., Dubovik, O., and Holben, B. N.: Ångström exponent and bimodal aerosol size distributions, J. Geophys. Res., 111, D07207, https://doi.org/10.1029/2005JD006328, 2006.

Sellegri, K., Rose, C., Marinoni, A., Lupi, A., Wiedensohler, A., Andrade, M., Bonasoni, P., and Laj, P.: New Particle Formation: A Review of Ground-Based Observations at Mountain Research Stations, Atmosphere, 10, 493, https://doi.org/10.3390/atmos10090493, 2019.

Sharma, S., Blagrave, K., Magnuson, J. J., O'Reilly, C. M., Oliver, S., Batt, R. D., Magee, M. R., Straile, D., Weyhenmeyer, G. A., Winslow, L., and Woolway, I. R.: Wide-spread loss of lake ice around the Northern Hemisphere in a warming world, Nat. Clim. Change, 9, 227–231, https://doi.org/10.1038/s41558-018-0393-5.5, 2019.

Sheridan, P., Andrews, E., Schmeisser, L., Vasel, B., and Ogren, J.: Aerosol measurements at South Pole: Climatology and impact of local contamination, Aerosol Air Qual. Res., 16, 855–872, https://doi.org/10.4209/aaqr.2015.05.0358, 2016.

Sherman, J. P., Sheridan, P. J., Ogren, J. A., Andrews, E., Hageman, D., Schmeisser, L., Jefferson, A., and Sharma, S.: A multi-year study of lower tropospheric aerosol variability and systematic relationships from four North American regions, Atmos. Chem. Phys., 15, 12487–12517, https://doi.org/10.5194/acp-15-12487-2015, 2015.

Singh, V., Ravindra, K., Sahu, L., and Sokhi, R.: Trends of atmospheric black carbon concentration over United Kingdom, Atmos. Environ., 178, 148–157, https://doi.org/10.1016/j.atmosenv.2018.01.030, 2018.

Sirois, A.: A brief and biased overview of time-series analysis of how to find that evasive trend, WMO/EMEP Workshop on Advanced Statistical Methods and Their Application to Air Quality Data Sets, Annex E., Global Atmosphere Watch No. 133, TD-No. 956, World Meteorological Organization, Geneva, Switzerland, 1998.

Sogacheva, L., Popp, T., Sayer, A. M., Dubovik, O., Garay, M. J., Heckel, A., Hsu, N. C., Jethva, H., Kahn, R. A., Kolmonen, P., Kosmale, M., de Leeuw, G., Levy, R. C., Litvinov, P., Lyapustin, A., North, P., Torres, O., and Arola, A.: Merging regional and global aerosol optical depth records from major available satellite products, Atmos. Chem. Phys., 20, 2031–2056, https://doi.org/10.5194/acp-20-2031-2020, 2020.

Sorribas, M., Andrews, E., Ogren, J. A., del Aguila, A., Fraile, R., Sheridan, P., and Yela, M.: Climatological study for understanding the aerosol radiative effects at southwest Atlantic coast of Europe, Atmos. Environ., 205, 52–66, https://doi.org/10.1016/j.atmosenv.2019.02.017, 2019.

Tørseth, K., Aas, W., Breivik, K., Fjæraa, A. M., Fiebig, M., Hjellbrekke, A. G., Lund Myhre, C., Solberg, S., and Yttri, K. E.: Introduction to the European Monitoring and Evaluation Programme (EMEP) and observed atmospheric composition change during 1972–2009, Atmos. Chem. Phys., 12, 5447–5481, https://doi.org/10.5194/acp-12-5447-2012, 2012.

Turco, M., Rosa-Cánovas, J. J., Bedia, J., Jerez, S., Montávez, J. P., Llasat, M. C., and Provenzale, A.: Exacerbated fires in Mediterranean Europe due to anthropogenic warming projected with non-stationary climate-fire models, Nat. Commun., 9, 3821, https://doi.org/10.1038/s41467-018-06358-z, 2018.

Vestreng, V., Myhre, G., Fagerli, H., Reis, S., and Tarrasón, L.: Twenty-five years of continuous sulphur dioxide emission reduction in Europe, Atmos. Chem. Phys., 7, 3663–3681, https://doi.org/10.5194/acp-7-3663-2007, 2007.

Virkkula, A.: Correction of the Calibration of the 3-wavelength Particle Soot Absorption Photometer (3λ PSAP), Aerosol Sci. Tech., 44, 706–712, https://doi.org/10.1080/02786826.2010.482110, 2010.

Virkkula, A., Ahlquist, N. C., Covert, D. S., Arnott, W. P., Sheridan, P. J., Quinn, P. K., and Coffman, D. J.: Modification, calibration and a field test of an instrument for measuring light absorption by particles, Aerosol Sci. Tech., 39, 68–83, https://doi.org/10.1080/027868290901963, 2005.

Von Storch, H.: Misuses of statistical analysis in climate research, in: Analysis of Climate Variability: Applications of Statistical Techniques, edited by: von Storch, H. and Navara, A., 11–26, Springer-Verlag, Berlin, Germany, 1995.

Wang, R., Andrews, E., Balkanski, Y., Boucher, O., Myhre, G., Samset, B. H., Schulz, M., Schuster, G., Valari, M., and Tao, S., Representativeness error in the ground-level observation networks for black carbon radiation absorption, Geophys. Res. Lett., 45, 2106–2114, https://doi.org/10.1002/2017GL076817, 2018.

Wang, W., Chen, Y., Becker, S., and Liu, B.: Linear trend detection in serially dependent hydrometeorological data based on a variance correction Spearman rho method, Water, 7, 7045–7065, https://doi.org/10.3390/w7126673, 2015.

Wang, X. L. and Swail, V. R.: Changes of extreme wave heights in Northern Hemisphere oceans and related atmospheric circulation regimes, J. Climate, 14, 2204–2221, https://doi.org/10.1175/1520-0442(2001)014, 2001.

Weatherhead, E. C., Reinsel, G. C., Tiao, G. C., Jackman, C. H., Bishop, L., Hollandsworth, F. S. M., DeLuisi, J., Keller, T., Oltmans, S. J., Flemming, E. L., Wuebbles, D. J., Kerr, J. B., Miller, A. J., Herman, J., McPeters, R., Nagatani, R. M., and Frederick, J. E.: Detecting the recovery of total column ozone, J. Geophys. Res., 105, 22201–22210, 2000.

Wei, J., Peng, Y., Mahmood, R., Sun, L., Guo, J.: Intercomparison in spatial distributions and temporal trends derived from multi-source satellite aerosol products, Atmos. Chem. Phys., 19, 7183-7207, https://doi.org/10.5194/acp-19-7183-2019, 2019.

White, W. H., Trzepla, K., Hyslop, N. P., and Schichtel, B. A.: A critical review of filter transmittance measurements for aerosol light absorption, and de novo calibration for a decade of monitoring on PTFE membranes, Aerosol Sci. Tech., 50, 984–1002, https://doi.org/10.1080/02786826.2016.1211615, 2016.

Willis, M. D., Leaitch, W. R., and Abbatt, J. P.: Processes controlling the composition and abundance of Arctic aerosol, Rev. Geophys., 56, 621–671, https://doi.org/10.1029/2018RG000602, 2018.

WMO: WMO/GAW aerosol measurement procedures, guidelines, and recommendations, 2nd edn., World Meteorological Organization GAW Rep. 227, 93 pp., https://library.wmo.int/doc_num.php?explnum_id=3073 (last access: 21 July 2020), 2016.

Yoon, J., Pozzer, A., Chang, D. Y., Lelieveld, J., Kim, J., Kim, M., Lee, Y. G., Koo, J.-H., Lee, J., and Moon, K. J.: Trend estimates of AERONET-observed and model-simulated AOTs between 1993 and 2013, Atmos. Environ., 125, 33–47, https://doi.org/10.1016/j.atmosenv.2015.10.058, 2016.

Yue, S., Pilon, P., Phinney, B., and Cavadias, G.: The influence of autocorrelation on the ability to detect trend
in hydrological series, Hydrol. Proc., 16, 1807–1829.
https://doi.org/10.1002/hyp.1095, 2002.

Zhang, X. and Zwiers, F. W.: Comment on “Applicability of prewhitening to eliminate the influence of serial correlation on the Mann–Kendall test” by Sheng Yue and Chun Yuan Wang, Water Resour. Res., 40, W03805, https://doi.org/10.1029/2003WR002073, 2004.

Zhang, X., Zwiers, F. W., and Li, G.: Monte Carlo experiments on the detection of trends in extreme values, J. Climate, 17, 1945–1952, https://doi.org/10.1175/1520-0442(2004)017, 2004.

Zhao, A., Bollasina, M. A., Crippa, M., and Stevenson, D. S.: Significant climate impacts of aerosol changes driven by growth in energy use and advances in emission control technology, Atmos. Chem. Phys., 19, 14517–14533, https://doi.org/10.5194/acp-19-14517-2019, 2019.

Zhao, B., Jiang, J. H., Gu, Y., Diner, D., Worden, J., Liou, K.-N., Su, H., Xing, J., Garay, M., and Huang, L.: Decadal-scale trends in regional aerosol particle properties and their linkage to emission changes, Environ. Res. Lett., 12, 054021, https://doi.org/10.1088/1748-9326/aa6cb2, 2017.

Zieger, P., Fierz-Schmidhauser, R., Weingartner, E., and Baltensperger, U.: Effects of relative humidity on aerosol light scattering: results from different European sites, Atmos. Chem. Phys., 13, 10609–10631, https://doi.org/10.5194/acp-13-10609-2013, 2013.