Correa, L. F., Folini, D., Chtirkova, B., and Wild, M.: A Method for Clear-Sky Identification and Long-Term Trends Assessment Using Daily Surface Solar Radiation Records, Earth and Space Science, 9, e2021EA002197, https://doi.org/10.1029/2021EA002197, 2022.
Crippa, M., Guizzardi, D., Muntean, M., Schaaf, E., Dentener, F., van Aardenne, J. A., Monni, S., Doering, U., Olivier, J. G. J., Pagliari, V., and Janssens-Maenhout, G.: Gridded emissions of air pollutants for the period 1970–2012 within EDGAR v4.3.2, Earth Syst. Sci. Data, 10, 1987–2013, https://doi.org/10.5194/essd-10-1987-2018, 2018.
Da Silva, V. D. P. R., e Silva, R. A., Cavalcanti, E. P., Braga, C. C., de Azevedo, P. V., Singh, V. P., and Pereira, E. R. R.: Trends in solar radiation in NCEP/NCAR database and measurements in northeastern Brazil, Sol. Energy, 84, 1852–1862, https://doi.org/10.1016/j.solener.2010.07.011, 2010.
de Jong, P., Barreto, T. B., Tanajura, C. A., Kouloukoui, D., Oliveira-Esquerre, K. P., Kiperstok, A., and Torres, E. A.: Estimating the impact of climate change on wind and solar energy in Brazil using a South American regional climate model, Renew. Energ., 141, 390–401, https://doi.org/10.1016/j.renene.2019.03.086, 2019.
de Lima, F. J. L., Martins, F. R., Costa, R. S., Gonçalves, A. R., dos Santos, A. P. P., and Pereira, E. B.: The seasonal variability and trends for the surface solar irradiation in northeastern region of Brazil, Sustainable Energy Technologies and Assessments, 35, 335–346, https://doi.org/10.1016/j.seta.2019.08.006, 2019.
Doelling, D. R., Loeb, N. G., Keyes, D. F., Nordeen, M. L., Morstad, D., Nguyen, C., Wielicki, B. A., and Sun, M.: Geostationary enhanced temporal interpolation for CERES flux products, J. Atmos. Ocean. Tech., 30, 1072–1090, https://doi.org/10.1175/JTECH-D-12-00136.1, 2013.
Doelling, D. R., Sun, M., Nordeen, M. L., Haney, C. O., Keyes, D. F., and Mlynczak, P. E.: Advances in geostationary-derived longwave fluxes for the CERES synoptic (SYN1deg) product, J. Atmos. Ocean. Tech., 33, 503–521, https://doi.org/10.1175/JTECH-D-15-0147.1, 2016.
Dutton, E. G., Stone, R. S., Nelson, D. W., and Mendonca, B. G.: Recent interannual variations in solar radiation, cloudiness, and surface temperature at the South Pole, J. Climate, 4, 848–858, https://doi.org/10.1175/1520-0442(1991)004<0848:RIVISR>2.0.CO;2, 1991.
ECMWF: CAMS Reanalysis,
https://www.ecmwf.int/en/research/climate-reanalysis/cams-reanalysis, last access: 21 February 2024.
Feng, F. and Wang, K.: Determining factors of monthly to decadal variability in surface solar radiation in China: Evidences from current reanalyses, J. Geophys. Res.-Atmos., 124, 9161–9182, https://doi.org/10.1029/2018JD030214, 2019.
Ferreira, G. W. and Reboita, M. S.: A new look into the South America precipitation regimes: Observation and Forecast, Atmosphere, 13, 873, https://doi.org/10.3390/atmos13060873, 2022.
Fisch, G., Marengo, J. A., and Nobre, C. A.: Uma revisão geral sobre o clima da Amazônia, Acta Amazon., 28, 101–101, https://doi.org/10.1590/1809-43921998282126, 1998 (in Portuguese with English abstract).
Gilgen, H., Roesch, A., Wild, M., and Ohmura, A.: Decadal changes in shortwave irradiance at the surface in the period from 1960 to 2000 estimated from Global Energy Balance Archive Data, J. Geophys. Res.-Atmos., 114, D00D08, https://doi.org/10.1029/2008JD011383, 2009.
Gueymard, C. A. and Yang, D.: Worldwide validation of CAMS and MERRA-2 reanalysis aerosol optical depth products using 15 years of AERONET observations, Atmos. Environ., 225, 117216, https://doi.org/10.1016/j.atmosenv.2019.117216, 2020.
Hakuba, M. Z., Folini, D., and Wild, M.: On the zonal near-constancy of fractional solar absorption in the atmosphere, J. Climate, 29, 3423–3440, https://doi.org/10.1175/JCLI-D-15-0277.1, 2016.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D., Simmons, A., Soci, C., Dee, D., and Thépaut, J. N.: The ERA5 global reanalysis, Q. J. Roy. Meteor. Soc., 146, 1999–2049, https://doi.org/10.1002/qj.3803, 2020.
Hersbach, H., Bell, B., Berrisford, P., Biavati, G., Horányi, A., Muñoz Sabater, J., Nicolas, J., Peubey, C., Radu, R., Rozum, I., Schepers, D., Simmons, A., Soci, C., Dee, D., and Thépaut, J.-N.: ERA5 monthly averaged data on single levels from 1940 to present, Copernicus Climate Change Service (C3S) Climate Data Store (CDS) [data set], https://doi.org/10.24381/cds.f17050d7, 2023.
IBGE: Censo Demográfico, Fundação Instituto Brasileiro de Geografia e Estatística, Rio de Janeiro, Brazil,
https://censo2022.ibge.gov.br/panorama/index.html (last access: 1 November 2023), 2022.
Inness, A., Ades, M., Agustí-Panareda, A., Barré, J., Benedictow, A., Blechschmidt, A.-M., Dominguez, J. J., Engelen, R., Eskes, H., Flemming, J., Huijnen, V., Jones, L., Kipling, Z., Massart, S., Parrington, M., Peuch, V.-H., Razinger, M., Remy, S., Schulz, M., and Suttie, M.: The CAMS reanalysis of atmospheric composition, Atmos. Chem. Phys., 19, 3515–3556, https://doi.org/10.5194/acp-19-3515-2019, 2019.
Jiao, B., Su, Y., Li, Q., Manara, V., and Wild, M.: An integrated and homogenized global surface solar radiation dataset and its reconstruction based on a convolutional neural network approach, Earth Syst. Sci. Data, 15, 4519–4535, https://doi.org/10.5194/essd-15-4519-2023, 2023.
Kambezidis, H. D., Kaskaoutis, D. G., Kharol, S. K., Moorthy, K. K., Satheesh, S. K., Kalapureddy, M. C. R., Vinoj, V., Wild, M., Anantha, R., and Kuniyal, J. C.: Multi-decadal variation of the net downward shortwave radiation over south Asia: The solar dimming effect, Atmos. Environ., 50, 360–372, https://doi.org/10.1016/j.atmosenv.2011.11.008, 2012.
Karlsson, K.-G., Riihelä, A., Trentmann, J., Stengel, M., Solodovnik, I., Meirink, J. F., Devasthale, A., Jääskeläinen, E., Kallio-Myers, V., Eliasson, S., Benas, N., Johansson, E., Stein, D., Finkensieper, S., Håkansson, N., Akkermans, T., Clerbaux, N., Selbach, N., Schröder, M., and Hollmann, R.: CLARA-A3: CM SAF cLoud, Albedo and surface RAdiation dataset from AVHRR data - Edition 3, Satellite Application Facility on Climate Monitoring (CM SAF) [data set],
https://doi.org/10.5676/EUM_SAF_CM/CLARA_AVHRR/V003, 2023.
Kazadzis, S., Founda, D., Psiloglou, B. E., Kambezidis, H., Mihalopoulos, N., Sanchez-Lorenzo, A., Meleti, C., Raptis, P. I., Pierros, F., and Nabat, P.: Long-term series and trends in surface solar radiation in Athens, Greece, Atmos. Chem. Phys., 18, 2395–2411, https://doi.org/10.5194/acp-18-2395-2018, 2018.
Kendall, M. G.: Rank correlation methods, 2nd impression, Charles Griffin and Company Ltd., London and High Wycombe, 1975.
Kudo, R., Uchiyama, A., Ijima, O., Ohkawara, N., and Ohta, S.: Aerosol impact on the brightening in Japan, J. Geophys. Res.-Atmos., 117, D07208, https://doi.org/10.1029/2011JD017158, 2012.
Li, Z., Barker, H. W., and Moreau, L.: The variable effect of clouds on atmospheric absorption of solar radiation, Nature, 376, 486–490, https://doi.org/10.1038/376486a0, 1995.
Liepert, B. G.: Observed reductions of surface solar radiation at sites in the United States and worldwide from 1961 to 1990, Geophys. Res. Lett., 29, 61-1–61-4, https://doi.org/10.1029/2002GL014910, 2002.
Liley, J. B.: New Zealand dimming and brightening, J. Geophys. Res.-Atmos., 114, D00D10, https://doi.org/10.1029/2008JD011401, 2009.
Lobo, C. and Cunha, J. M. P. d.: Migração e mobilidade pendular nas áreas de influência de metrópoles brasileiras, Mercator (Fortaleza), 18, e18017, https://doi.org/10.4215/rm2019.e18017, 2019.
Long, C. N. and Dutton, E. G.: BSRN Global Network Recommended QC Tests, V2.0, BSRN Technical Report,
http://hdl.handle.net/10013/epic.38770.d001 (last access: 1 August 2024), 2002.
Long, C. N., Dutton, E. G., Augustine, J. A., Wiscombe, W., Wild, M., McFarlane, S. A., and Flynn, C. J.: Significant decadal brightening of downwelling shortwave in the continental United States, J. Geophys. Res.-Atmos., 114, D00D06, https://doi.org/10.1029/2008JD011263, 2009.
Madhavan, B. L., Deneke, H., Witthuhn, J., and Macke, A.: Multiresolution analysis of the spatiotemporal variability in global radiation observed by a dense network of 99 pyranometers, Atmos. Chem. Phys., 17, 3317–3338, https://doi.org/10.5194/acp-17-3317-2017, 2017.
Manara, V., Brunetti, M., Celozzi, A., Maugeri, M., Sanchez-Lorenzo, A., and Wild, M.: Detection of dimming/brightening in Italy from homogenized all-sky and clear-sky surface solar radiation records and underlying causes (1959–2013), Atmos. Chem. Phys., 16, 11145–11161, https://doi.org/10.5194/acp-16-11145-2016, 2016.
Mann, H. B.: Nonparametric tests against trend, Econometrica, 13, 245–259, https://doi.org/10.2307/1907187, 1945.
NASA/LARC/SD/ASDC: CERES Time-Interpolated TOA Fluxes, Clouds and Aerosols Monthly Terra Edition4A, NASA Langley Atmospheric Science Data Center DAAC [data set],
https://doi.org/10.5067/TERRA/CERES/SSF1DEGMONTH_L3.004A, 2015.
Natsis, A., Bais, A., and Meleti, C.: Trends from 30-Year Observations of Downward Solar Irradiance in Thessaloniki, Greece, Appl. Sci., 14, 252, https://doi.org/10.3390/app14010252, 2023.
Nishizawa, S. and Yoden, S.: Distribution functions of a spurious trend in a finite length data set with natural variability: Statistical considerations and a numerical experiment with a global circulation model, J. Geophys. Res.-Atmos., 110, D12105, https://doi.org/10.1029/2004JD005714, 2005.
Norris, J. R. and Wild, M.: Trends in aerosol radiative effects over Europe inferred from observed cloud cover, solar “dimming”, and solar “brightening”, J. Geophys. Res.-Atmos., 112, D08214, https://doi.org/10.1029/2006JD007794, 2007.
Ohmura, A.: Observed decadal variations in surface solar radiation and their causes, J. Geophys. Res.-Atmos., 114, D00D05, https://doi.org/10.1029/2008JD011290, 2009.
Ohmura, A. and Lang, H.: Secular variation of global radiation over Europe, in: Current Problems in Atmospheric Radiation, edited by: Lenoble, J. and Geleyn, J. F., Proceedings of the International Radiation Symposium 1988, 298–301, 1989.
Ohmura, A., Dutton, E. G., Forgan, B., Fröhlich, C., Gilgen, H., Hegner, H., Heimo, A., König-Langlo, G., McArthur, B., Müller, G., Philipona, R., Pinker, R. T., Whitlock, C. H., Dehne, K., and Wild, M.: Baseline Surface Radiation Network (BSRN/WCRP): New precision radiometry for climate research, B. Am. Meteorol. Soc., 79, 2115–2136, https://doi.org/10.1175/1520-0477(1998)079<2115:BSRNBW>2.0.CO;2, 1998.
Pfeifroth, U., Sanchez-Lorenzo, A., Manara, V., Trentmann, J., and Hollmann, R.: Trends and variability of surface solar radiation in Europe based on surface- and satellite-based data records, J. Geophys. Res.-Atmos., 123, 1735–1754, https://doi.org/10.1002/2017JD027418, 2018.
Power, H. C.: Trends in solar radiation over Germany and an assessment of the role of aerosols and sunshine duration, Theor. Appl. Climatol., 76, 47–63, https://doi.org/10.1007/s00704-003-0005-8, 2003.
Raichijk, C.: Observed trends in sunshine duration over South America, Int. J. Climatol., 32, 669–680, https://doi.org/10.1002/joc.2296, 2012.
Reboita, M. S., Gan, M. A., Da Rocha, R. P., and Ambrizzi, T.: Precipitation regimes in South America: a bibliography review, Revista Brasileira de Meteorologia, 25, 185–204, https://doi.org/10.1590/S0102-77862010000200004, 2010.
Rosário, N. E., Sauini, T., Pauliquevis, T., Barbosa, H. M. J., Yamasoe, M. A., and Barja, B.: Aerosol optical depth retrievals in central Amazonia from a multi-filter rotating shadow-band radiometer calibrated on-site, Atmos. Meas. Tech., 12, 921–934, https://doi.org/10.5194/amt-12-921-2019, 2019.
Russak, V.: Trends of solar radiation, cloudiness and atmospheric transparency during recent decades in Estonia, Tellus B, 42, 206-210, https://doi.org/10.3402/tellusb.v42i2.15205, 1990.
Schwartz, R. D.: Global dimming: Clear-sky atmospheric transmission from astronomical extinction measurements, J. Geophys. Res.-Atmos., 110, D14210, https://doi.org/10.1029/2005JD005882, 2005.
Schwarz, M., Folini, D., Hakuba, M. Z., and Wild, M.: From point to area: Worldwide assessment of the representativeness of monthly surface solar radiation records, J. Geophys. Res.-Atmos., 123, 13857–13877, https://doi.org/10.1029/2018JD029169, 2018.
Schwarz, M., Folini, D., Yang, S., and Wild, M.: The annual cycle of fractional atmospheric shortwave absorption in observations and models: spatial structure, magnitude, and timing, J. Climate, 32, 6729–6748, https://doi.org/10.1175/JCLI-D-19-0212.1, 2019.
Schwarz, M., Folini, D., Yang, S., Allan, R. P., and Wild, M.: Changes in atmospheric shortwave absorption as important driver of dimming and brightening, Nat. Geosci., 13, 110–115, https://doi.org/10.1038/s41561-019-0528-y, 2020.
Sen, P. K.: Estimates of the regression coefficient based on Kendall's tau, J. Am. Stat. Assoc., 63, 1379–1389, https://doi.org/10.2307/2285891, 1968.
Silva Junior, C. H., Pessôa, A. C., Carvalho, N. S., Reis, J. B., Anderson, L. O., and Aragão, L. E.: The Brazilian Amazon deforestation rate in 2020 is the greatest of the decade, Nature Ecology & Evolution, 5, 144–145, https://doi.org/10.1038/s41559-020-01368-x, 2021.
Stanhill, G. and Moreshet, S.: Global radiation climate changes: The world network, Climatic Change, 21, 57–75, https://doi.org/10.1007/BF00143253, 1992.
Stjern, C. W., Kristjánsson, J. E., and Hansen, A. W.: Global dimming and global brightening–An analysis of surface radiation and cloud cover data in northern Europe, Int. J. Climatol., 29, 643–653, https://doi.org/10.1002/joc.1735, 2009.
Torres, O., Tanskanen, A., Veihelmann, B., Ahn, C., Braak, R., Bhartia, P. K., Veefkind, P., Levelt, P., and De Leeuw, G.: Aerosols and surface UV products from Ozone Monitoring Instrument observations: An overview, J. Geophys. Res.-Atmos., 112, D24S47, https://doi.org/10.1029/2007JD008809, 2007.
Torres, O. O.: OMI/Aura Near UV Aerosol Optical Depth and Single Scattering Albedo L3 1 day 1.0 degree x 1.0 degree V3, NASA Goddard Space Flight Center, Goddard Earth Sciences Data and Information Services Center (GES DISC) [data set], https://doi.org/10.5067/Aura/OMI/DATA3003, 2008.
Vera, C., Baez, J., Douglas, M., Emmanuel, C. B., Marengo, J., Meitin, J., Nicolini, M., and Zipser, E.: The South American low-level jet experiment, B. Am. Meteorol. Soc., 87, 63–77, https://doi.org/10.1175/BAMS-87-1-63, 2006.
Wang, C., Jeong, G. R., and Mahowald, N.: Particulate absorption of solar radiation: anthropogenic aerosols vs. dust, Atmos. Chem. Phys., 9, 3935–3945, https://doi.org/10.5194/acp-9-3935-2009, 2009.
Wang, K., Ma, Q., Li, Z., and Wang, J.: Decadal variability of surface incident solar radiation over China: Observations, satellite retrievals, and reanalyses, J. Geophys. Res.-Atmos., 120, 6500–6514, https://doi.org/10.1002/2015JD023420, 2015.
Wang, X. L.: Penalized maximal F test for detecting undocumented mean shift without trend change, J. Atmos. Ocean. Tech., 25, 368–384, https://doi.org/10.1175/2007JTECHA982.1, 2008.
Wild, M.: Global dimming and brightening: A review, J. Geophys. Res.-Atmos., 114, D00D16, https://doi.org/10.1029/2008JD011470, 2009.
Wild, M., Wacker, S., Yang, S., and Sanchez-Lorenzo, A.: Evidence for clear-sky dimming and brightening in central Europe, Geophys. Res. Lett., 48, e2020GL092216, https://doi.org/10.1029/2020GL092216, 2021.
Xia, X., Chen, H., Li, Z., Wang, P., and Wang, J.: Significant reduction of surface solar irradiance induced by aerosols in a suburban region in northeastern China, J. Geophys. Res.-Atmos., 112, D22S02, https://doi.org/10.1029/2006JD007562, 2007.
Yamasoe, M. A., Rosário, N. M. É., Almeida, S. N. S. M., and Wild, M.: Fifty-six years of surface solar radiation and sunshine duration over São Paulo, Brazil: 1961–2016, Atmos. Chem. Phys., 21, 6593–6603, https://doi.org/10.5194/acp-21-6593-2021, 2021.
Yang, S., Wang, X. L., and Wild, M.: Homogenization and trend analysis of the 1958–2016 in situ surface solar radiation records in China, J. Climate, 31, 4529–4541, https://doi.org/10.1175/JCLI-D-17-0891.1, 2018.
Yuan, M., Leirvik, T., and Wild, M.: Global trends in downward surface solar radiation from spatial interpolated ground observations during 1961–2019, J. Climate, 34, 9501–9521, https://doi.org/10.1175/JCLI-D-21-0165.1, 2021.
Zuluaga, C. F., Avila-Diaz, A., Justino, F. B., and Wilson, A. B.: Climatology and trends of downward shortwave radiation over Brazil, Atmos. Res., 250, 105347, https://doi.org/10.1016/j.atmosres.2020.105347, 2021.
