Aerosol effects in the UV-B spectral region over Pune, an urban site in India

Details Aerosol effects in the UV-B spectral region over Pune, an urban site in India Aerosol effects in the UV-B spectral region over Pune, an urban site in India

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009georl..3610802p&link_type=abstract

Geophysical Research Letters, Volume 36, Issue 10, CiteID L10802

Physics

1

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801, 4906), Atmospheric Composition And Structure: Pollution: Urban And Regional (0305, 0478, 4251), Atmospheric Composition And Structure: Radiation: Transmission And Scattering, Atmospheric Composition And Structure: Instruments And Techniques

Scientific paper

Collocated measurements of UV-B irradiance and aerosol optical characteristics have been carried out over Pune, western India from April 2004 to March 2005 to estimate the role of aerosols in UV-B radiation at the surface. It is found that a unit increases in aerosol optical depth reduces by about 40-56% of the harmful UV-B radiation that reaches the site. Ultraviolet-impact on human health is usually characterized by the UV-index (UV-I), and is estimated with the aid of a radiative transfer model using aerosol and ozone measurements over the site. The index is found to be in the extreme range (10.1 to 13.5) during pre-monsoon, high to extreme (8.5 to 11) during post- monsoon and high (7 to 10) during the winter seasons, vulnerable to sensitive skin. The estimated UV-I values are found to be compared well with SCIAMACHY satellite observed UV-I values with mean ratio of 0.95 ± 0.05.

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