DOI QR코드

DOI QR Code

Development of Concurrent Multi Path (CMP)-Differential Optical Absorption Spectroscopy (DOAS) for Remote Sensing of Surface Atmospheric Gases

지표면 대기중 가스상오염물질 다경로 동시 원격 모니터링을 위한 CMP-DOAS 개발: 첫 개발 사례 및 이산화질소 측정 연구

  • Lee, Han-Lim (Department of Atmospheric Sciences, Yonsei University) ;
  • Hwang, Jung-Bae (Spectro) ;
  • Kim, Jhoon (Department of Atmospheric Sciences, Yonsei University) ;
  • Noh, Young-Min (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology) ;
  • Won, Yong-Kwan (School of Electronics and Computer Engineering, Chonnam National University)
  • Received : 2010.05.20
  • Accepted : 2010.07.13
  • Published : 2010.08.31

Abstract

Concurrent Multi Path-Differential Optical Absorption Spectroscopy (CMP-DOAS) is a novel active optical system to measure simultaneously ambient trace gases (such as $NO_2$, $SO_2$, $O_3$, and HCHO) present on several light paths. The CMP-DOAS system consists of a 2D CCD camera, spectrometer, receiving telescopes, and artificial light sources. The system receives spectra, which have been transported through several paths. It also covers wavelength ranges of which trace gases of interest share at the same time. This study presents the instrumental setup of a CMP-DOAS in detail. A field campaign for a comparative measurement was carried out at an urban site in Gwangju for a month on January 2009. $NO_2$ mixing ratios measured by the CMP-DOAS system and in-situ $NO_2$ analyzers were in good agreement by 83%. It demonstrates the high capacities of the CMP-DOAS technique to cover atmospheric trace gases dispersed across wide light paths.

Keywords

References

  1. Choi, S.C., Y.J. Kim, D.H. Kim, and J. Lee (2004) A Differential Absorption Lidar (DIAL) for ozone measurements in the planetary boundary layer in an urban area, J. Korean Phvs. Soc., 1432-1437.
  2. Dunlea, E.J., S.C. Herndon, D.D. Nelson, R.M. Volkamer, F. San Martini, P.M. Sheehy, M.S. Zahniser, J.H. Shorter, J.C. Wormhoudt, B.K. Lamb, E.J. Allwine, J.S. Gaffney, N.A. Marley, M. Grutter, C. Marquez, S. Blanco, B. Cardenas, A. Retama, C.R. Ramos Villegas, C.E. Kolb, L.T. Molina, and M.J. Molina (2007) Evaluation of nitrogen dioxide chemiluminescence monitors in a polluted urban environment, Atmos. Chem. Phys., 7, 2691-2704. https://doi.org/10.5194/acp-7-2691-2007
  3. Kim, K.H. and M.Y. Kim (2001) Comparison of an open path differential optical absorption spectroscopy system and a conventional in situ monitoring system on the basis of long-term measurements of $SO_2,\;NO_2,\;and\;O_3$, Atmos. Environ., 35, 4059-4072. https://doi.org/10.1016/S1352-2310(01)00216-3
  4. Lee, C., S.B. Hong, H. Lee, J.S. Jung, Y.J. Choi, J.E. Park, Y.J. Kim, K.H. Kim, J.H. Lee, K.J. Chun, and H.H. Kim (2005a) Measurement of atmospheric formaldehyde and monoaromatic hydrocarbons using differential optical absorption spectroscopy during winter and summer intensive periods in Seoul, Korea, Water Air Soil Pollut., 165(1-4), 171-185.
  5. Lee, C., Y.J. Choi, J.S. Lee, J.S. Jung, Y.J. Kim, and K.H. Kim (2005b) Measurement of atmospheric BTX in Seoul using differential optical absorption spectroscopy, J. Korean Soc. Atmos. Environ., 21(1), 1-14. (in Korean with English abstract)
  6. Lee, J.S., Y.J. Kim, B. Kuk, A. Geyer, and U. Platt (2005c) Simultaneous measurement of atmospheric pollution and visibility with a long-path DOAS system in urban areas, Environ Monit Assess., 104, 281-293. https://doi.org/10.1007/s10661-005-1616-6
  7. Lee, J., K.H. Kim, Y.J. Kim, and J. Lee (2008) Application of a long-path differential optical absorption spectrometer (LP-DOAS) on the measurements of $NO_2,\;SO_2,\;O_3$, and $HNO_2$ in Gwangju, Korea, J. Environ. Manage., 86, 750-759. https://doi.org/10.1016/j.jenvman.2006.12.044
  8. Leigh, R.J., G.K. Corlett, U. Friess, and P.S. Monks (2006) Concurrent multiaxis differential optical absorption spectroscopy system for the measurement of tropospheric nitrogen dioxide, Appl. Opt., 45(28), 7504-7518. https://doi.org/10.1364/AO.45.007504
  9. Leigh, R.J., G.K. Corlett, U. Friess, and P.S. Monks (2007) Spatially resolved measurements of nitrogen dioxide in an urban environment using concurrent multi-axis differential optical absorption spectroscopy, Atmos. Chem. Phys., 7, 4751-4762. https://doi.org/10.5194/acp-7-4751-2007
  10. Platt, U. and J. Stutz (2008) Differential Optical Absorption Spectroscopy: Principles and Applications, Springer Verlag, Heidelberg.
  11. Stutz, J. and U. Platt (1996) Numerical analysis and error estimation of differential optical absorption spectroscopy measurements with least squares methods, Appl. Opt., 35, 6041-6053. https://doi.org/10.1364/AO.35.006041
  12. Thornton, J.A., P.J. Wooldridge, R.C. Cohen, E.J. Williams, D. Hereid, F.C. Fehsenfeld, J. Stutz, and B. Alicke (2003) Comparisons of in situ and long path measurements of NO2 in urban plumes, J. Geophys. Res., 108(D16), 4496, doi:10.1029/2003JD003559.
  13. Van Roozendael, M. and C. Fayt (2001) WinDOAS 2.1 Software User Manual, Inst. d'Aeron, Spatiale de Belg./Belg., Inst. voor Ruimte-Aeron., Uccle.
  14. Vandaele, A.C., T.C. Simon, J.M. Goilmont, C.M. Carleer, and R. Colin (1994) $NO_2$ absorption cross section measurement in the UV using Fourier transform spectrometer, J. Geophys. Res., 99, 25599-25605. https://doi.org/10.1029/94JD02187