Location of Repository

A concurrent multi-axis differential optical absorption spectroscopy system for the measurement of tropospheric nitrogen dioxide

By Roland J. Leigh, Gary K. Corlett, Udo Friess and Paul S. Monks


This is the authors' final draft of a paper published as Applied Optics, 2006, 45 (28), pp.7504-7518. © 2006 Optical Society of America, Inc.The development of a new concurrent multi-axis sky viewing spectrometer for monitoring rapidly changing urban concentrations of nitrogen dioxide is detailed. The concurrent multi-axis differential optical absorption spectroscopy (CMAX-DOAS) technique involves simultaneous spectral imaging of the zenith and off-axis measurements of spatially resolved scattered sun-light. Trace gas amounts are retrieved from the measured spectra using the established DOAS technique. The potential of the CMAX DOAS technique to derive information on rapidly changing concentrations and the spatial distribution of nitrogen dioxide in an urban environment is demonstrated. Three example datasets are presented from measurements during 2004 of tropospheric NO2 over Leicester, UK (52.62 °N, 1.12 °W). The data demonstrates the current capabilities and future potential of the CMAX-DOAS method in terms of the ability to measure the real-time spatially disaggregated urban NO2

Publisher: Optical Society of America
Year: 2006
OAI identifier: oai:lra.le.ac.uk:2381/194

Suggested articles



  1. (1990). Absorption-Measurements of Oxygen between 330nm and 1140nm". doi
  2. (2002). Analysis for BrO in zenith-sky spectra: An intercomparison exercise for analysis improvement". doi
  3. (1962). Anomalous Fraunhofer line profiles". Nature, doi
  4. (1991). Charakterisierung von Photodiondenzeilen zue Messung stratospharischer Spurenstoffe".
  5. (2003). Detection of bromine monoxide in a volcanic plume". Nature, doi
  6. (1994). Differential optical absorption spectroscopy, (DOAS), in air monitoring by spectroscopic techniques., doi
  7. (2003). Dioxide in the United Kingdom.
  8. (1999). DOAS Zenith sky observations: 2. Seasonal variation of BrO over Bremen (53 degrees N) 1994-1995". Journal of Atmospheric Chemistry,
  9. (2004). Ground-based measurements of halogen oxides at the Hudson Bay by active longpath DOAS and passive MAX-DOAS". Geophysical Research Letters, doi
  10. (1996). Ground-based UV measurements of BrO and OClO over Ny-Alesund during winter
  11. (2004). MAX-DOAS measurements of atmospheric trace gases in Ny-Alesund - Radiative transfer studies and their application". Atmospheric Chemistry and Physics, doi
  12. (2003). MAX-DOAS measurements of BrO and NO2 in the marine boundary layer". doi
  13. (2004). MAX-DOAS O-4 measurements: A new technique to derive information on atmospheric aerosols - Principles and information content". doi
  14. Measurements of arctic sunrise surface ozone depletion events at Kangerlussuaq, doi
  15. (2000). Measurements of iodine monoxide (IO) above Spitsbergen". Geophysical Research Letters, doi
  16. (2003). Measurements of molecular absorption spectra with the SCIAMACHY pre-flight model: instrument characterization and reference data for atmospheric remote-sensing in the 230-2380 nm region". doi
  17. (1000). Measurements of the NO2 absorption cross-section from doi
  18. Multi axis differential optical absorption spectroscopy (MAX- DOAS)". Atmospheric Chemistry and Physics, doi
  19. (1975). Nitrogen Dioxide in the Stratosphere and Troposphere measured by Ground-based absorption spectroscopy." Science, doi
  20. (1980). NO2 Observations at 45-Degrees-S During the Decreasing Phase of Solar-Cycle 21, from doi
  21. (2002). Observations of BrO and its vertical distribution during surface ozone depletion at Alert". Atmospheric Environment, doi
  22. (1987). On the Interpretation of Zenith Sky Absorption-Measurements". doi
  23. (1987). On the interpretation of zenith sky measurements". doi
  24. (2001). Roozendael," WINDOAS user manual",
  25. (1984). Solar Flux Atlas from 296 to 1300nm, in National Solar Observatory Atlas No.
  26. (2001). Spectroscopic measurements of tropospheric iodine oxide at Neumayer Station, Antarctica". Geophysical Research Letters, doi
  27. (1990). Stratospheric NO2 observations at the Jungfraujoch Station between doi
  28. (1979). Stratospheric NO2, 1. Observational method and behaviou at Midlatitudes." doi
  29. The Book of Photon Tools,
  30. (2001). The HITRAN molecular spectroscopic database: edition of 2000 including updates through doi
  31. (1991). Visible and near-Ultraviolet Spectroscopy at Mcmurdo Station, Antarctica .9. Observations of OClO from April to October doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.