Abstract
AbstractUV radiation is known to affect many biological and chemical processes, and is largely detrimental to individual organisms. Specific concerns include increase in the incidence of skin cancer, ocular damage, and other health effects in humans and other animals; damage to terrestrial and oceanic vegetation; changes in the chemistry of the lower atmosphere e.g. photochemical smog formation. Present study was undertaken to monitor lower atmospheric aerosol load with Respirable Dust Sampler and ultraviolet radiation with UV-radiometer in the ambient environment of Delhi. PM10 (< 10 µm) and SPM (> 10 µm) samples collected for the period of the study (8 weeks, 2 samples per week, total 16 samples). Hourly UV Fluxes (UV-B & UV-A) were measured from four hours ahead to four hours following the solar noon (LAT 12:00hrs), alongside aerosol sampling twice in a week. Our study shows, lower-atmospheric load of finer particles (PM10) significantly cut-off both UV-A and UV-B fluxes reaching the earth surface. PM10 load shows a satisfactory negative correlation with UV-A and UV-B fluxes at ground level.
Highlights
UV radiation is known to affect many biological and chemical processes, and is largely detrimental to individual organisms
Lower atmospheric load of finer particles (PM10) significantly cut-off both UV-A and UV-B
We found a good agreement between calculated UV-A & UV-B fluxes with measured UV-A & UV-B fluxes
Summary
UV radiation is known to affect many biological and chemical processes, and is largely detrimental to individual organisms. Correlation between Ground Level Ultra-Violet Radiation & Lower Atmospheric Aerosol Load Specific concerns include increases in the incidence of skin cancer, ocular damage, and other health effects in humans and animals; damage to terrestrial and oceanic vegetation; changes in the chemistry of the lower atmosphere e.g. photochemical smog formation. Zenith Angle · Latitude · Day Number · Solar Time
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