Retrieval of Aerosol Distributions by Multi-Axis Differential Absorption Spectroscopy (MAX-DOAS)
We present and demonstrate a method which uses a set of slant column density (SCD) measurements of oxygen dimers (O4) at several different elevation angles to determine the atmospheric aerosol extinction within the atmospheric boundary layer. In addition, the height of the atmospheric boundary layer can usually be derived. Furthermore, the technique can be readily extended to determine concentrations of several other trace gases including NO2, SO2, or CH2O. The method is based on the comparison of measurements with O4 SCDs from an accurate radiative transfer model.
Keywords New measurement techniques, tropospheric aerosols, spectroscopy, MAX-DOAS
KeywordsAtmospheric Boundary Layer Elevation Angle Differential Optical Absorption Spectroscopy Aerosol Extinction Aerosol Distribution
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- 1.Platt U., Differential optical absorption spectroscopy (DOAS), air monitoring by spectroscopic techniques, in: Chemical Analysis Series, Chemical Analysis Series, Vol. 127, edited by M.W. Sigrist, , New York: Wiley (1994).Google Scholar
- 2.Platt U., Modern methods of the measurement of atmospheric trace gases, J. Phys. Chem. Chem. Phys. “PCCP”, 1, 5409–5415 (1999).Google Scholar
- 4.Wagner, T., Dix, B., Friedeburg, C. v., Frieß, U., Sanghavi, S., Sinreich, R., Platt, U., MAX-DOAS O4 measurements: a new technique to derive information on atmospheric aerosols–Principles and information content, J. Geophys. Res., 109, D22205, doi:10.1029/2004JD004904 (2004).CrossRefADSGoogle Scholar