An analysis of global radiation measurements and fractional cloud cover observations made in the Israel Meteorological Service’s network of climate stations demonstrated a significant decrease in the transmittance of solar radiation through the atmosphere during the last 60 years. The major cause was the reduced transparency of clouds. Under completely overcast skies with complete cloud cover transmission in the industrialized central coastal region decreased from 0.41 in the mid-20th century to 0.21 in the first decade of the 21st century. Under cloudless skies the reduction in the transmission of global radiation was less, from 0.79 to 0.71, and not statistically significant. Similar but somewhat smaller changes were observed in the less industrialized central hill region. Multi-linear analysis showed that since 1970, 61% of the measured decline in global radiation was attributable to changes in fractional cloud cover but only 2% to the marked increase in local fuel combustion; there was no statistically significant interaction between the two parameters.
References
[1]
Stanhill, G. and Cohen, S. (2001) Global Dimming: A Review of the Evidence for a Widespread and Significant Reduction in Global Radiation with Discussion of Its Probable Causes and Possible Agricultural Consequences. Agricultural and Forest Meteorology, 107, 255-278. https://doi.org/10.1016/S0168-1923(00)00241-0
[2]
Wild, M., Gilgen, H., Roesch, A., Ohmura, A., Long, C.N., Dutton, E.G., Forgan, B., Kallis, A., Russak, V. and Tsvetkov, A. (2005) From Dimming to Brightening: Decadal Changes in Solar Radiation at Earth’s Surface. Science, 308, 847-850.
https://doi.org/10.1126/science.1103215
[3]
Alpert, P. and Kishcha, P. (2008) Quantification of the Effect of Urbanization on Solar Dimming, Geophysical Research Letters, 35.
https://doi.org/10.1029/2007GL033012
[4]
Stanhill, G. and Moreshet, S. (1992) Global Radiation Climate Changes in Israel. Climatic Change, 22, 121-138. https://doi.org/10.1007/BF00142962
[5]
Alexandri, G., Georgoulias, A.K., Meleti, C., Balis, D., Kourtidis, K.A., Sanchez-Lorenzo, A., Trentmann, I. and Zanis, P. (2017) A High Resolution Satellite View of Surface Solar Radiation over the Climatically Sensitive Region of Eastern Mediterranean. Atmospheric Research, 188, 107-121.
https://doi.org/10.1016/j.atmosres.2016.12.015
[6]
Kabezidis, H.D., Kaskaoutis, D.G., Kallampakos, G.K., Rashki, A. and Wild, M. (2016) The Solar Dimming/Brightening Effect over the Mediterranean Basin in the Period 1979-2012. Journal of Atmospheric and Solar-Terrestrial Physics, 150, 31-46.
https://doi.org/10.1016/j.jastp.2016.10.006
[7]
Enriquez-Alonso, A., Calbo, J., Sancho-Lorenzo, A. and Tan, E. (2017) Discrepancies in the Climatology and Trends in Cloud Cover in Global and Regional Climate Models for the Mediterranean Region. Journal of Geophysical Research: Atmospheres, 122, 11,664-11,677. https://doi.org/10.1002/2017JD027147
[8]
Sanchez-Lorenzo, A., Enriquez-Alonso, A., Calbo, J., Gonzalez, J.-A., Wild, M., Folini, D., Norris, J. and Vicente-Serrano, S.M. (2017) Fewer Clouds in the Mediterranean: Consistency of Observations and Climate Simulations. Scientific Reports, 7, Article number: 41475. https://doi.org/10.1038/srep41475
[9]
Pallé, E., Goode, P.R., Montañés-Rodriguez, P. and Koonin, S.E. (2006) Can Earth’s Albedo and Surface Temperatures Increase Together? EOS, Transactions American Geophysical Union, 87, 37-43.
[10]
Hobbs, P.V. (1993) Aerosol-Cloud-Climate Interactions. Academic Press, New York.
[11]
Lohmann, U. and Feichter, J. (2005) Global Indirect Aerosol Effects: A Review. Atmospheric Chemistry and Physics, 5, 715-737.
https://doi.org/10.5194/acp-5-715-2005
[12]
WMO (2008) Guide to Meteorological Instruments and Methods of Observation. Seventh Edition. Chapter 7. Measurement of Radiation. World Meteorological Organization, Geneva.
[13]
Liu, B.Y.H. and Jordan, R.C. (1960) The Interrelationship and Characteristic Distribution of Direct, Diffuse and Total Solar Radiation. Solar Energy, 4, 1-19.
https://doi.org/10.1016/0038-092X(60)90062-1
[14]
Stanhill, G. and Ianetz, A. (1997) Long-Term Trends in, and Spatial Variation of, Global Radiation in Israel. Tellus, 49B, 112-122.
https://doi.org/10.3402/tellusb.v49i1.15954
[15]
Von Storch, H. (1999) Misuses of Statistical Analysis in Climate Research. In: von Storch, H. and Navarra, A., Eds., Analysis of Climate Variability, Springer, Heidleberg, 11-26. https://doi.org/10.1007/978-3-662-03744-7_2
[16]
Stanhill, G. and Cohen, S. (2009) Is Solar Dimming Global or Urban? Evidence from Measurements in Israel between 1954 and 2007. Journal of Geophysics Research, 114, D00D17. https://doi.org/10.1029/2009JD011976
[17]
Robinson, G.D. (1964) II Radiation 1. Surface Measurements of Solar and Terrestrial Radiation during the IGY and IGC. Annals of the IGY, Volume 32 Meteorology, Pergamon Press, London, 17-61.
[18]
Gilgen, H., Wild, M. and Ohmura, A. (1998) Means and Trends of Shortwave Irradiance at the Surface Estimated from Global Energy Balance Archive Data. Journal of Climate, 11, 2042-2061. https://doi.org/10.1175/1520-0442-11.8.2042
[19]
Garcia, R.D., Cuevas, E., Garcia, O.E., Ramos, R., Romero-Campos, P.M., de Ory, F., Cachorro, V.E. and e Frutos, A. (2017) Compatability of Different Techniques of Global Solar Radiation and Application for Long-Term Observations at Izana Observatory. Atmospheric Measurement Technicology, 10, 731-743.
https://doi.org/10.5194/amt-10-731-2017
[20]
Habuka, M.Z., Folini, O., Sanchez-Lorenzo, A. and Wild, M. (2014) Spatial Represetativeness of Ground-Based Solar Radiation Measurements-Extension to the Full Meteosat Disk. Journal of Geophysical Research: Atmospheres, 119, 11,760-11,771.
[21]
Galligan, A.M. (1953) Variability of Subjective Cloud Observations I, Atmospheric Analysis Laboratoty, Geophysics Research Directorate, Air Force Cambridge Research Center, Air Research and Development Command.
[22]
Palle, E. and Butler, C.J. (2002) Comparisons of Sunshine Records and Synoptic Cloud Observations: A Case Study from Ireland. Physics and Chemistry of the Earth, 27, 403-414.
[23]
Matuszko, D. (2014) Long-Term Variability in Solar Radiation in Krakow Based on Measurements of Sunshine Duration. International Journal of Climatology, 34, 228-234. https://doi.org/10.1002/joc.3681
[24]
Norris, J.R. and Wild, M. (2009) Trends in Aerosol Radiative Effects over China and Japan Inferred from Observed Cloud Cover, Solar “Dimming” and Solar “Brightening”. Journal of Geophysical Research, 114, D00D15.
https://doi.org/10.1029/2008JD011378
[25]
Dallafior, T., Folini, D., Knutti, R. and Wild, M. (2015) Dimming over the Oceans: Transient Anthropogenic Aerosol Plumes in the Twentieth Century. Journal of Geophysical Research: Atmospheres, 120, 3465-3484.
[26]
Kaufman, Y.J., Koren, I., Remer, L.A., Rosenfeld, D. and Rudich, Y. (2005) The Effect of Smoke, Dust, and Pollution Aerosol on Shallow Cloud Development over the Atlantic Ocean. Proceedings of the National Academy of Sciences, 102, 11207-11212.
https://doi.org/10.1073/pnas.0505191102
[27]
Rosenfeld, D., Kaufman, Y. and Koren, I. (2006) Switching Cloud Cover and Dynamical Regimes from Open to Closed Benard Cells in Response to the Suppression of Precipitation by Aerosols. Atmospheric Chemistry and Physics, 6, 2503-2511.
https://doi.org/10.5194/acp-6-2503-2006
[28]
Colliver, D.G. (1991) Techniques for Estimating Incident Solar Radiation. In: Parker, B.F., Ed., Solar Energy in Agriculture, Elsevier, Amsterdam, Chapter 1, 1-66.
[29]
Stanhill, G. (1962) Solar Radiation in Israel. Bulletin of the Research Council of Israel, 11, 36-41.
[30]
Stanhill, G., Achiman, O., Rosa, R. and Cohen, S. (2014) The Cause of Solar Dimming and Brightening at the Earth’s Surface during the Last Half Century: Evidence from Measurements of Sunshine Duration. Journal of Geophysical Research: Atmospheres, 119, 10,902-10,911.
[31]
Augustine, J.A. and Dutton, E.G. (2013) Variability of the Surface Radiation Budget over the United States from 1996 through 2011 from High-Quality Measurements. Journal of Geophysical Research: Atmospheres, 118, 43-53.
https://doi.org/10.1029/2012JD018551
[32]
Padma Kumari, B. and Goswamin, B.N. (2010) Seminal Role of Clouds on Solar Dimming over the Indian Monsoon Region. Geophysical Research Letters, 37, L06703.
[33]
Jahani, B., Dimpashoh, Y. and Wild, M. (2017) Dimming in Iran since the 2000s and the Potential Underlying Causes. International Journal of Climatology, 37.
[34]
Trenbarth, K.E., Jones, P.D., Ambenje, P., Bojariu, R., Easterling, D., Klein Tank, A., Parker, D., Rahimzadeh, F., Renwick, J.A., Rusticucci, M., Soden, B. and Zhai, P. (2007) Observations: Surface and Atmospheric Climate Change, in Climate Change 2007: The Physical Science Basis. Contribution of Working Group 1 to the Fourth Assessment Report of the Intergovernmental Panel of Climate Change, Cambridge University Press, Cambridge.
[35]
Kasten, F. and Czeplak, G. (1980) Solar and Terrestrial Radiation Dependent on the Amount and Type of Cloud. Solar Energy, 24, 177-189.
https://doi.org/10.1016/0038-092X(80)90391-6
[36]
Tsutsumi, Y. and Murakami, S. (2012) Increase in Global Solar Radiation with Total Cloud Amount from 33 Years Observations in Japan. Journal of the Meteorological Society of Japan, 90, 575-581.
[37]
Dutton, E.G., Farhadi, A., Stone, R.S., Long, C.N. and Nelson, D.N. (2004) Long-Term Variations in the Occurrence and Effective Solar Transmission of Clouds as Determined from Surface-Based Total Irradiance Observations. Journal of Geophysical Research: Atmospheres, 109. https://doi.org/10.1029/2003JD003568
[38]
Alpert, P., Osetinsky, I., Ziv, B. and Shafir, H. (2004) Semi-Objective Classification for Daily Synoptic Systems: Application to the Eastern Mediterranean Climate Change. International Journal of Climatology, 24, 1001-1011.
https://doi.org/10.1002/joc.1036
[39]
Svensmark, J., Enghoff, M.B., Shaviv, N.J. and Svensmark, J. (2017) Increased Ionization Supports Growth of Aerosols into Cloud Condensation Nuclei. Nature Communications, 8, Article No. 2199.
[40]
Svensmark, H. and Friis-Christensen, E. (1997) Variation of Cosmic Ray Flux and Global Cloud Coverage—A Missing Link in Solar-Climate Relationships. Journal of Atmospheric and Solar-Terrestrial Physics, 59, 1225-1232.
https://doi.org/10.1016/S1364-6826(97)00001-1
