MAX-DOAS measurements of atmospheric trace gases in Ny- ˚ Alesund - Radiative transfer studies and their application
By F. Wittrock, H. Oetjen, A. Richter, S. Fietkau, T. Medeke, A. Rozanov, J. P. Burrows. 2004
251 citations recorded by the source corpus.
A new approach to derive tropospheric concen- trations of some atmospheric trace gases from ground-based UV/vis measurements is described. The instrument, referred to as the MAX-DOAS, is based on the well-known UV/vis instruments, which use the sunlight scattered in the zenith sky as the light source and the method of Differential Optical Absorption Spectroscopy (DOAS) to derive column amounts of absorbers like ozone and nitrogen dioxide. Substantial en- hancements have been applied to this standard setup to use different lines of sight near to the horizon as additional light sources (MAX - multi axis). Results from measurements at Ny- ˚ Alesund (79 N, 12 E) are presented and interpreted with the full-spherical radiative transfer model SCIATRAN. In particular, measurements of the oxygen dimer O4 which has a known column and vertical distribution in the atmo- sphere are used to evaluate the sensitivity of the retrieval to parameters such as multiple scattering, solar azimuth, surface albedo and refraction in the atmosphere and also to validate the radiative transfer model. As a first application, measure- ments of NO2 emissions from a ship lying in Ny- ˚ Alesund harbour are presented. The results of this study demonstrate the feasibility of long term UV/vis multi axis measurement that can be used to derive not only column amounts of dif- ferent trace gases but also some information on the vertical location of these absorbers.
Subfields: Atmospheric Science, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/8f0107a9046e7a4e31e4b730aebdbbe96765648f
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Citations in the corpus
- Comparison of box-air-mass-factors and radiances for Multiple-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) geometries calculated from different UV/visible radiative transfer models (2006, background): “…(H¨onninger and Platt, 2002; Leser et al., 2003; Bobrowski et al., 2003; van Roozendael et al., 2003; H¨onninger et al., 2004; Wagner et al., 2004; Wittrock et al., 2004; Von Friedeburg et al., 2005; Heckel et al., 2005; Oetjen et al., 2006; Sinreich et al., 2005; Frieß et al., 2006; Frins et…”
- MAX‐DOAS O4 measurements: A new technique to derive information on atmospheric aerosols: 2. Modeling studies (2006, background): “Sequential or simultaneous observations of scattered light from a variety of viewing angles have been shown to yield significant information about the vertical profile of trace gases (e.g., BrO, IO, NO2, HCHO) located near the surface [Ho¨nninger and Platt, 2002; Leser et al., 2003; Bobrowski et al.”
- First retrieval of tropospheric aerosol profiles using MAX-DOAS and comparison with lidar and sky radiometer measurements (2008, background): “…information about several important trace gases, such as nitrogen dioxide (NO2), formaldehyde, and glyoxal (e.g., Hönninger et al., 2004; Wittrock et al., 2004; Heckel et al., 2005; Hendrick et al., 2006; Leigh et al., 2006; Sinreich et al., 2007), and thus have a variety of potential…”