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Hu, Bo; Wang, Yuesi; Liu, Guangren (2011)
Publisher: Tellus B
Journal: Tellus B
Languages: English
Types: Article
Subjects:
Four years measurements of broadband global solar radiation (RS) and total ultraviolet (UV) radiation (the sum of UV-A and UV-B) were conducted from 2005 to 2008 in Beijing. These data were used to determine the temporal variability of UV/RS and its dependence on water vapour content and clearness index. A simple, efficient and empirically derived all-weather model is proposed to estimate UV from RS. The estimated data were used to analyse the characteristics of long-term variations in UV radiation. Results revealed that annual mean UV was 0.37 ± 0.17 MJ m-2 d-1. The highest daily value of UV radiation was measured in May, while the lowest value occurred in December. The monthly mean value of UV/Rs gradually increased from 2.7% in November to 3.7% in August. The annual mean value of UV/Rs was 3.1%. The annual mean daily UV radiation during 1958–2005 was 0.46 MJ m-2 d-1. The interannual variations and long-term patterns of UV radiation derived from reconstructed daily UV values are compatible with changes in measured RS. Annual mean UV radiation levels decreased from the early 1960s to the late 1990s but began to increase in the late 1990s. Over the latter half of the 20th century, decrease in UV radiation was 0.018 MJ m-2 d-1 per decade. The decrease trends in long-term annual mean UV radiation of −0.026 MJ m-2 d-1 per year for 1958–1997 and −0.0024 MJ m-2 d-1 per year for 1958–2005. The decreasing trend in UV radiation was sharpest in spring and summer but more gradual in autumn and winter.DOI: 10.1111/j.1600-0889.2010.00452.x
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    • Bojkov, R. D. 1997. Global ozone change and possible climate implications. In Solar Ultraviolet Radiation, Modelling, Measurements and Effects. NATO ASI Ser., 52 (eds C. S. Zerefos and A. F. Bais), Springer-Verlag, New York, 303-324.
    • Bruce, W. 1996. A new method for calibrating reference and field pyranometers. J. Atmos. Oceanic Technol. 13, 638-645.
    • Calbo´, J., Pags, D. and Gonzalez, J.-A. 2005. Empirical studies of cloud effects on UV radiation: A review. Rev. Geophys. 43, RG2002, doi:10.1029/2004RG000155.
    • Canˇada, J., Pedro´s, G., Lo´pez, A. and Bosca´, J. V. 2000. Influences of the clearness index for the whole spectrum and of the relative optical air mass on UV solar irradiance for two locations in the Mediterranean area, Valencia and Cordoba. J. Geophys. Res. 105, 4659-4766.
    • Chang, D., Song, Y. and Liu, B. 2009. Visibility trends in six megacities in China 1973-2007. Atmos. Res. 94, 161-167.
    • Che, H. Z., Shi, G. Y., Zhang, X. Y., Arimoto, R., Zhao, J. Q., and co-authors. 2005. Analysis of 40 years of solar radiation data from China, 1961-2000. Geophys. Res. Lett. 32, L06803, doi:10.1029/2004GL022322.
    • Degu¨nther, M., Meerko¨tter, R., Albold, A. and Seckmeyer, G. 1998. Case study on the influence of inhomogeneous surface albedo on UV irradiance. Geophys. Res. Lett. 25(19), 3587-3590.
    • D´ıaz, S., Deferrari, G., Martinioni, D. and Oberto, A. 2000. Regression analysis of biologically effective integrated irradiances versus ozone, clouds and geometric factors. J. Atmos. Solar-Terrestrial Phys. 62, 629-638.
    • Diffey, B. L. 1991. Solar ultraviolet radiation effects on biological systems. Phys. Med. Biol. 36, 299-328.
    • Diffey, B. L. 2004. Climate change, ozone depletion and the impact on ultraviolet exposure of human skin. Phys. Med. Biol. 49, 1-11.
    • Elhadidy, M. A., Abdel-Nabi, D. Y. and Kruss, P. D. 1990. Ultraviolet solar radiation at Dhahran, Saudi Arabia. Solar Energy 44, 315- 319.
    • Feister, U., Junk, J. and Woldt, M. 2008. Long-term solar UV radiation reconstructed by Artificial Neural Networks (ANN). Atmos. Chem. Phys. Discuss. 8, 453-488.
    • Fioletov, V. E., McArthur, L., Kerr, J. B. and Wardle, D. I. 2001. Longterm variations of UV-B irradiance over Canada estimated from Brewer observations and derived from ozone and pyranometer measurements. J. Geophys. Res. 106, 23009-23028.
    • Foyo-Moreno, I., Vida, J. and Alados-Arboledas, L. 1999. A simple all weather model to estimate Ultraviolet solar radiation (290-385nm). J. Appl. Meteor. 38, 1020-1026.
    • Geiger, M., Diabate´, L., Me´nard, L. and Wald, L. 2002. A web service for controlling the quality of measurements of global radiation. Solar Energy 73(6) 475-480.
    • Gueymard, C. A. 2004. The sun's total and spectral irradiance for solar energy applications and solar radiation models. Solar Energy 76, 423-453.
    • Hu, B., Wang, Y. S. and Liu, G. R. 2007. Ultraviolet radiation spatiotermporal characteristics derived from the ground-based measurements taken in China. Atmos. Environ. 41, 5707-5718.
    • Kaiser, D. P. 1998. Analysis of cloud amount over China, 1951-1994. Geophys. Res. Lett. 25, 3599-3602.
    • Kaiser, D. P. 2000. Decreasing cloudiness over China: An updated analysis examining additional variables. Geophys. Res. Lett. 26, 2193-2196.
    • Kaurola, J., Taalas, P., Koskela, T., Borkowski, J. and Josefsson, W. 2000. Long-term variations of UV-B doses at three stations in northern Europe. J. Geophys. Res. 105, 20813-20820.
    • Lindfors, A., Kaurola, J., Arola, A., Koskela, T., Lakkala, K. and coauthor. 2007. A method for reconstruction of past UV radiation based on radiative transfer modeling: applied to four stations in northern Europe. J. Geophys. Res. 112, D23201, doi:10.1029/2007JD008454.
    • Lindfors, A. and Arola, A. 2008. On the wavelength dependent attenuation of UV radiation by clouds. Geophys. Res. Lett. 35, L05806, doi:10.1029/2007GL032571.
    • 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.
    • Long, C. N. and Ackerman, T. P. 2000. Identification of clear skies from broadband pyranometer measurements and calculation of downwelling shortwave cloud effects. J. Geophys. Res. 105(D12), 15609-15626.
    • Mahowald, N. M., Ballantine, J. A., Feddema, J. and Ramankutty, N. 2007. Global trends in visibility: implications for dust sources. Atmos. Chem. Phys. 7, 3309-3339.
    • McKenzie, R. L., Johnston, P. V., Smale, D., Barry, B. A. and Madronich, S. 2001. Altitude effects on UV spectral irradiance deduced from measurements at Lauder, New Zealand, and at Mauna Loa Observatory, Hawaii. J. Geophys. Res. 106, 22845-22860.
    • Nemeth, P., Toth, Z. and Nagy, Z. 1996. Effect of weather conditions on UV-B radiation reaching the earth's surface. J. Photochem. Photobiol. B: Biol. 32, 177-181.
    • Outer, K., Den, P. N., Slaper, H. and Tax, R. B. 2005. UV radiation in the Netherlands: assessing long-term variability and trends in relation to ozone and clouds. J. Geophys. Res. 110, D02203, doi:10.1029/2004JD004824.
    • Piazena, H. 1996. The effect of altitude upon the solar UV-B and UV-A irradiance in the topical Chilean Andes. Solar Energy 57, 133-140.
    • Seckmeyer, G., Mayer, B., Bernhard, G., Albold, A., Erb, R. and coauthor. 1997. New Maximum UV Irradiance Levels Observed in Central Europe. Atmos. Environ. 31, 2971-2976.
    • Shi, G. Y., Hayasaka, T., Ohmura, A., Chen, Z. H., Wang, B. and coauthor. 2008. Data quality assessment and the long-term trend of ground solar radiation in China. J. Appl. Meteorol. Climatol. 47, 1006-1016.
    • Slaper, H. and Koskela, T. 1997. Methodology of intercomparing spectral sky measurements, correcting for wavelength shifts, slit function differences and defining a spectral reference. In The Nordic Intercomparison of Ultraviolet and Total Ozone Instruments at Izana, October 1996 (eds Kjeldstad et al.), Finnish Meteorological Institute, Helsinki, 89-108.
    • Su, W. Y., Charlock, T. P. and Rose, F. G. 2005. Deriving surface ultraviolet radiation from CERES surface and atmospheric radiation budget: Methodology. J. Geophys. Res. 110, D14209, doi:10.1029/2005JD005794.
    • Udo, S. 2000. Sky conditions at Ilorin as characterized by clearness index and relative sunshine. Solar Energy 69, 45-53.
    • United Nations Environment Programme (UNEP). 2003. Environmental Effects of Ozone Depletion and its Interactions with Climate Change: 2002 Assessment, Nairobi, Kenya, 177pp.
    • Wang, K. C., Wang, J. K., Wang, P. C., Chen, H. B. 2008. The accuracy of MODIS albedo over Beijing urban area and its algorithm improvement. Chin. J. Atmos. Sci. 32(1), 67-74 (In Chinese).
    • Xia, X., Li, Z., Wang, P., Cribb, M., Chen, H. and co-authors. 2008. Analysis of photosynthetic photon flux density and its parameterization in Northern China. Agric. For. Meteorol. 148, 1101- 1108.
    • Yang, J. M. and Qiu, J. H. 2002. A method for estimating precipitable water and effective water vapour content from ground humidity parameters. Chin. J. Atmos. Sci. 26, 9-26 (In Chinese).
    • Zerefos, C. S. 2002. Long-term ozone and UV variations at Thessaloniki, Greece. Phys. Chem. Earth 27, 455-460.
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