한국대기환경학회지 (Journal of Korean Society for Atmospheric Environment)

  • 제21권6호
  • /
  • Pages.631-637
  • /
  • 2005
  • /
  • 1598-7132(pISSN)
  • /
  • 2383-5346(eISSN)
한국대기환경학회 (Korean Society for Atmospheric Environment)
권호 표지

자외선 영역의 에어로졸 광학 깊이의 계절 분포 및 불확실도의 계산

Seasonal Variation and Measurement Uncertainty of UV Aerosol Optical Depth Measured at Gwangju, Korea

  • 김정은 (광주과학기술원 환경공학과, 환경모니터링신기술연구센터) ;
  • 김영준 (광주과학기술원 환경공학과, 환경모니터링신기술연구센터)
  • Kim, Jeong-Eun (Department of Environmental science and engineering, Gwangju Institute of science and Technology (GIST), Advanced Environmental Monitiring Research Chnter (ADEMRC)) ;
  • Kim, Young-Joon (Department of Environmental science and engineering, Gwangju Institute of science and Technology (GIST), Advanced Environmental Monitiring Research Chnter (ADEMRC))
  • 발행 : 2005.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A UV-MFRSR instrument was used to measure the global and diffuse irradiances in 7 narrowband channels in the UV range 299.4, 304.4, 310.9, 317.3. 324.5, 331.3 and 367.4 nm at Gwangju ($35^{circ}\;13'N\;126^{circ}\;50'E$), Korea. Spectral UV-AOD was retrieved using the Langley plot method for data collected from April 2002 to July 2004. Temporal variation of AOD at 367.4 nm ($AOD_{367nm}$) showed a maximum in June ($0.95\pm0.43$) and a minimum in February ($0.31\pm0.14$). Clear seasonal variation of $AOD_{367nm}$ was observed with average values of $0.68\pm0.29,\;0.82\pm0.41,\;0.48\pm0.22\;and\;0.42\pm0.21$ in spring, summer, fall and winter, respectively, Average Angstrom exponent for the entire monitoring period was $2.03\pm0.75$ in the UV-A ($324.5\∼367.4$ nm) range. Seasonal variation of the Angstrom exponent showed a maximum in spring and a minimum in summer. The lowest Angstrom exponent in summer might be due to hygroscopic growth of particles under conditions of high relative humidity. UV-AOD changes under different atmospheric conditions were also analyzed. Uncertainty in retrieving spectral UV-AOD was also estimated to range between $\pm0.218\;at\;304.4\;nm\;and\;\pm0.135\;at\;367.4\;nm$. Major causes of uncertainty were total column ozone retrieval and extraterrestrial irradiance retrieval at shorter and longer wavelengths, respectively.

키워드

참고문헌

  1. Bigelow, D.S., J.R. Slusser, A.F. Beaubien, and J.H. Gibson (1998) The USDA Ultraviolet Radiation Monitoring Program, Bull. Am. Meteorol., Soc., 79, 601-615 https://doi.org/10.1175/1520-0477(1998)079<0601:TUURMP>2.0.CO;2
  2. Cheymol, A. and H. De Backer (2003) Retrieval of the aerosol optical depth in the UV-B at Uccle from Brewer ozone measurements over a long time period 1984-2002, Journal of Geophysical Research, 108 (D24), doi:10.1029/2003JD003758
  3. Grobner J. and C. Meleti (2004) Aerosol optical depth in the UVB and visible wavelength range from Brewer spectrophotometer direct irradiance measurements: 1991-2002, Journal of Geophysical Research, 109, D09202, doi:10.1029/2003JD004409
  4. Hansen, J.E. and L.D. Travis (1974) Light scattering in planetary atmosphere, Space Science Rev., 16, 527-610 https://doi.org/10.1007/BF00168069
  5. Harrison, L. and J. Michalsky (1994) Objective Algorithms for the Retrieval of Optical depths from Ground-based Measurements, Applied Optics, 33(22), 5126-5132 https://doi.org/10.1364/AO.33.005126
  6. Harrison, L., J. Michalsky, and J. Berndt (1994) Automated multifilter rotating shadow-band radiometer: an instrument for optical depth and radiation measurement, Applied Optics, 33(22), 5118-5125 https://doi.org/10.1364/AO.33.005118
  7. Iqbal, M. (1983) An introduction to solar radiation, pp. 3, Academic Press Canada
  8. Jaroslawski, J., J.W. Krzyscin, S. Puchalski, and P. Sobolewski (2003) On the optical thickness in the UV range: Analysis of the ground-based data taken at Belsk, Poland, Journal of Geophysical Research, 108 (D23), doi:10.1029/2003JD00357l
  9. Kerr, J. (1997) Observed dependencies of atmospheric UV radiation and trends, in Solar Ultraviolet Radiation: Modeling, Measurements and Effects, edited by C.S. Zerefos and A.F. Bais, pp. 259-266, Springer -Verlag, New York
  10. Kirchhoff, V.W.J.H., A.A. Silva, C.A. Costa, N.P. Leme, H.G. Pavao, and F. Zaratti (2001) UV-B optical thickness observations of the atmosphere, Journal of Geophysical Research, 106(D3), 2963-2973 https://doi.org/10.1029/2000JD900506
  11. Kirchhoff, V.W.J.H., A.A. Silva, and D.K. Pinheiro (2002) Wavelength dependence of aerosol optical thickness in the UV-B band, Geophysical Research Letter, 29(12), doi:10.1029/2001g1014141
  12. Kylling, A., A.F. Bais, M. Blumthaler, J. Schreder, C.S. Zerefos, and E. Kosmidis(1998) Effect of aerosols on solar UV irradiances during the photochemical activity and solar ultraviolet radiation campaign, J. Geophys. Res., 103(D20), 26,051-26,060 https://doi.org/10.1029/98JD02350
  13. Lee, K.H., J.E. Kim, Y.J. Kim, J. Kim, W. von Hoynrngen-Huene (2005) Impact of the smoke aerosol from Russian forest fires on the atmospheric environment over Korea during May 2003, Atmospheric Environment, 39, 85-99 https://doi.org/10.1016/j.atmosenv.2004.09.032
  14. Liu, S.C., S.A. McKeen, and S. Madronich (1991) Effect of anthropogenic aerosols on biologically active ultraviolet radiation, Geophysical Research Letter, 18(12), 2265-2268 https://doi.org/10.1029/91GL02773
  15. Molina, L.T. and M.J. Molina, (1986) Absolute Absorption Cross Sections of Ozone in the 185- to 350-nm, wavelength Region, Journal of Geophysical Research, 91, 14501-14508 https://doi.org/10.1029/JD091iD13p14501
  16. Ryu, S.Y., J.E. Kim, Z. He, Y.J. Kim, and G.U. Kang (2004) Chemical composition of post-harvest biomass burning aerosols in Gwangju, Korea, Air & Waste Management Association, 54, 1124-1137 https://doi.org/10.1080/10473289.2004.10471018
  17. Wenny, B.N., V.K. Saxena, and J.E. Frederick (2001) Aerosol optical depth measurements and their impact on surface levels of ultraviolet-B radiation, Journal of Geophysical Research, 106(DI5), 17311-17319 https://doi.org/10.1029/2001JD900185
  18. Zerefos, C. (1997) Factors influencing the transmission of the solar ultraviolet irradiance through the Earth's atmosphere, in Solar Ultraviolet Radiation, Modeling Measurements and Effects, ATO ASI Ser. I, vol. 52, edited by C.S. Zerefos and A.F. Bais, pp. 133-141, Springer Verlag New York