Theoretical and Applied Climatology

, Volume 45, Issue 2, pp 107–111 | Cite as

On the attenuation of direct solar irradiance in Athens due to aerosols

  • D. K. Pissimanis
  • V. A. Notaridou
  • G. S. Karras
Article

Summary

In this study the trend of the time sequence of the “integral aerosol optical depth” (ka), as proposed by Unsworth and Monteith, was determined for clear days in summer for the period 1962–1988 in Athens. The trend was found by fitting a third degree polynomial curve and it was concluded that (ka) showed a considerable increase (i.e. from the value of 0.18 to 0.31) in the period 1962–1976 and remained approximately constant until 1979, after which it started decreasing again slowly until 1988. The increase of (ka) in the period 1962–1976 is likely attributable to the rapid development of the city in this period, while the decrease of (ka) after 1979 probably reflects the efficiency of some restrictions which were imposed on the pollutant emissions during this period. In addition, an analysis of the percentage frequency distribution found that while 95% of the values of (ka) ranged from 0.100 to 0.400 in the beginning of the period (1964–1967), in recent years (1984–1987) the same percentage of the values of (ka) ranged from 0.100 to 0.500.

Keywords

Climate Change Waste Water Attenuation Water Management Water Pollution 

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References

  1. Ångström, A., 1929: On the atmospheric transmission of sun radiation.Geograph. Annal. 2 & 3, 130.Google Scholar
  2. Blackwell, M. J., Eldridge, R. H., Robinson, G. D., 1954: Estimation of the reflection and absorption of solar radiation by a cloudless atmosphere from recording at the ground with results for Kew Observatory. M.R.P. 894.Google Scholar
  3. Bridgman, H. A., 1978: Direct visible spectra and aerosol optical depths at urban and rural locations during the summer of 1975 at Milwaukee.Solar Energy 21, 139.Google Scholar
  4. Fröhlich, C., Brusa, R. W., 1981: Solar radiation and its variation in time.Solar Phys. 74, 209.Google Scholar
  5. Iqbal, M., 1983:An Introduction to Solar Radiation. Canada: Academic Press.Google Scholar
  6. Jamal, Al K., Ayyash, S., Rasas, M., Aruri, Al S., Shaban, N., 1987: Atmospheric turbidity in Kuwait.Atmos. Environ. 21, 1855.Google Scholar
  7. Karras, G. S., Pissimanis, D., Notaridou, V., 1990: On the trend of the transmittance of direct solar irradiance in Athens during the summer.Atmos. Environ. 24B, 221.Google Scholar
  8. Katz, M., Baile, A., Mermier, M., 1982: Atmospheric turbidity in a semi-rural site-I.Solar Energy 28, 323.Google Scholar
  9. Lacis, A. A., Hansen, J. E., 1974: A parameterization for the absorption of solar radiation in the earth's atmosphere.J. Atmos. Sci. 19, 182.Google Scholar
  10. Leckner, B., 1978: The spectral distribution of solar radiation at the earth's surface — elements of a model.Solar Energy 20 (2), 143–150.Google Scholar
  11. Louche, A., Maurel, M., Simonnot, G., Peri, G., Iqbal, M., 1987: Determination of Angstrom's turbidity coefficient from direct total solar irradiance measurements.Solar Energy 38, 89.Google Scholar
  12. Paltridge, G. W., Platt, C. M. R., 1976:Radiative Process in Meteorology and Climatology. New York: Elsevier.Google Scholar
  13. Robinson, N., 1966:Solar Radiation. Amsterdam: Elsevier.Google Scholar
  14. Spencer, W. J., 1971: Fourier series representation of the position of the Sun. Search 2.172.Google Scholar
  15. Unsworth, M. H., Monteith, J., 1972: Aerosol and solar radiation in Britain.Quart. J. Roy. Meteor. Soc. 98, 778.Google Scholar

Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • D. K. Pissimanis
    • 1
  • V. A. Notaridou
    • 1
  • G. S. Karras
    • 1
  1. 1.Department of Applied Physics, Laboratory of MeteorologyUniversity of AthensAthensGreece

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