Aerosol effects on UV radiation

Koepke, P.; Reuder, J.; Schwander, H.
August 2000
AIP Conference Proceedings;2000, Vol. 534 Issue 1, p581
Academic Journal
The reduction of erythemally weighted UV-irradiance (given as UV index, UVI) due to aerosols is analyzed by variation of the tropospheric particles in a wide, but realistic range. Varied are amount and composition of the particles and relative humidity and thickness of the mixing layer. The reduction of UVI increases with aerosol optical depth and the UV change is around 10% for a change aerosol optical depth from 0.25 to 0.1 and 0.4 respectively. Since both aerosol absorption and scattering are of relevance, the aerosol effect depends besides total aerosol amount on relative amount of soot and on relative humidity.


Related Articles

  • Effects of urban pollution on UV spectral irradiances. McKenzie, R. L.; Weinreis, C.; Johnston, P. V.; Liley, B.; Shiona, H.; Kotkamp, M.; Smale, D.; Takegawa, N.; Kondo, Y. // Atmospheric Chemistry & Physics;2008, Vol. 8 Issue 18, p5683 

    Spectral measurements of UV irradiances at Tokyo are compared with corresponding measurements at a pristine site (Lauder New Zealand) to identify the causes of the reductions in urban UV irradiances, and to quantify their effects. Tropospheric extinctions in Tokyo were found to be up to...

  • Case Studies of Aerosol Retrievals over the Ocean from Multiangle, Multispectral Photopolarimetric Remote Sensing Data. Chowdhary, Jacek; Cairns, Brian; Travis, Larry D. // Journal of the Atmospheric Sciences;2/1/2002, Vol. 59 Issue 3, p383 

    To evaluate the global effects of aerosols on the direct radiative balance, tropospheric chemistry, and cloud properties of the earth's atmosphere requires high-precision remote sensing that is sensitive to the aerosol optical thickness, size distribution, refractive index, and number density....

  • A Pacific Aerosol Survey. Part I: A Decade of Data on Particle Production, Transport, Evolution, and Mixing in the Troposphere. Clarke, Antony D.; Kapustin, Vladimir N. // Journal of the Atmospheric Sciences;2/1/2002, Vol. 59 Issue 3, p363 

    Integration of extensive aerosol data collected during the past decade around the Pacific basin provides a preliminary assessment of aerosol microphysics for this region and cycling of aerosol in the troposphere. These include aircraft-based data collected as part of numerous field experiments...

  • Interactions of intense ultraviolet laser radiation with solid aerosols. Poulain, D. E.; Alexander, D. R.; Barton, J. P.; Schaub, S. A.; Zhang, J. // Journal of Applied Physics;3/1/1990, Vol. 67 Issue 5, p2283 

    Provides information on a study which examined the characterizations of the interaction of intense ultraviolet laser radiation with small solid aerosols. Observation on the interaction dynamics and velocity of expelled material in plasma formation; Discussion of small solid aerosol particles;...

  • Real-Time Fluorescence Measurement of Airborne Bacterial Particles Using an Aerosol Fluorescence Sensor with Dual Ultraviolet- and Visible-Fluorescence Channels. Jung, Jae Hee; Lee, Jung Eun; Bae, Gwi-Nam // Environmental Engineering Science;Oct2012, Vol. 29 Issue 10, p987 

    In the search for methods by which an ambient environment can be continuously monitored for potentially harmful biological aerosols, particle fluorescence methods have received considerable attention over the past decade. The aerosol fluorescence sensor (AFS) is a monitoring device for...

  • Airborne rhinovirus detection and effect of ultraviolet irradiation on detection by a semi-nested RT-PCR assay. Myatt, Theodore A.; Johnston, Sebastian L.; Rudnick, Stephen; Milton, Donald K. // BMC Public Health;2003, Vol. 3 Issue 1, p5 

    Background: Rhinovirus, the most common cause of upper respiratory tract infections, has been implicated in asthma exacerbations and possibly asthma deaths. Although the method of transmission of rhinoviruses is disputed, several studies have demonstrated that aerosol transmission is a likely...

  • Ozonolysis of ð-pinene: parameterization of secondary organic aerosol mass fraction. Pathak, R. K.; Presto, A. A.; Lane, T. E.; Stanier, C. O.; Donahue, N. M.; Pandis, S. N. // Atmospheric Chemistry & Physics Discussions;2007, Vol. 7 Issue 1, p1941 

    Existing parameterizations tend to underpredict the α-pinene aerosol mass fraction (AMF) by a factor of 2-5 at low organic aerosol concentrations (<5 µg m-3). A wide range of smog chamber results obtained at various conditions (low/high NOx, presence/ absence of UV radiation, dry/humid...

  • Measurements of coarse mode and primary biological aerosol transmission through a tropical forest canopy using a dual-channel fluorescence aerosol spectrometer. Gabey, A. M.; Gallagher, M. W.; Whitehead, J.; Dorsey, J. // Atmospheric Chemistry & Physics Discussions;2009, Vol. 9 Issue 5, p18965 

    Aerosol in the size range 0.8-20 μm was characterized according to optical equivalent diameter, DP , morphology and the presence of biological material, the latter determined by recording fluorescence excited by ultraviolet light pulses at two different wavelengths. Single-particle...

  • Mechanism of UV-light induced SO2 oxidation to H2SO4. Sorokin, A. // Atmospheric Chemistry & Physics Discussions;2009, Vol. 9 Issue 6, p24411 

    The electron-excited chemistry of sulfur dioxide oxidation induced by UV irradiation of air with trace O3 and SO2 is considered. The importance of this mechanism is evaluated based on recent laboratory experiments on SO2 oxidation in a laminar tube with air induced by UV irradiation. Results...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics