Impact of selecting different reference spectra on errors in doas analysis

  • Adrian Roșu "Dunarea de Jos" University of Galati, Romania
  • Daniel-Eduard Constantin "Dunarea de Jos" University of Galati, Romania
  • Bogdan Roșu "Dunarea de Jos" University of Galati, Romania
  • Maxim Arseni "Dunarea de Jos" University of Galati, Romania
  • Mirela Voiculescu "Dunarea de Jos" University of Galati, Romania https://orcid.org/0000-0002-1864-3878
  • Cătălina Iticescu "Dunarea de Jos" University of Galati, Romania https://orcid.org/0000-0001-8350-9424
  • Lucian Puiu Georgescu "Dunarea de Jos" University of Galati, Romania https://orcid.org/0000-0001-9455-9291
DOI: https://doi.org/10.35219/ann-ugal-math-phys-mec.2019.1.17
Keywords: DOAS technique, mobile DOAS measurements, DOAS analysis, air pollution

Abstract

This paper presents an analysis of various sources of errors for measurements of atmospheric trace gases concentrations, based on DOAS (Differential Optical Absorption Spectroscopy). The error analysis is based on measurements done in Galati city on 11 October 2018. The spectral window was 425-490 nm which is used for NO2 detection in the lower atmosphere. Two sets of reference spectra were used: one recorded during a measurement campaign of the project DANS in Galati city and one recorded in May 2015 in a remote area at high altitudes, where NO2 sources are scarce. This investigation will provide a more reliable method of reducing the errors in NO2 DOAS spectral analysis by selecting appropriate reference spectra.

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Published
2019-07-28
How to Cite
Roșu, A., Constantin, D.-E., Roșu, B., Arseni, M., Voiculescu, M., Iticescu, C. and Georgescu, L. P. (2019) “Impact of selecting different reference spectra on errors in doas analysis”, Analele Universității ”Dunărea de Jos” din Galați. Fascicula II, Matematică, fizică, mecanică teoretică / Annals of the ”Dunarea de Jos” University of Galati. Fascicle II, Mathematics, Physics, Theoretical Mechanics, 42(1), pp. 109-116. doi: https://doi.org/10.35219/ann-ugal-math-phys-mec.2019.1.17.
Issue
Vol 42 No 1 (2019)
Section
Articles