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Proceedings Paper

Detection of minor trace species in the atmosphere
Author(s): Werner Thomas; Albrecht von Bargen; Ernst Hegels; Sander Slijkhuis; Kelly Van Chance; Robert J. D. Spurr
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Paper Abstract

The Global Ozone Monitoring Experiment (GOME) is an atmospheric chemistry instrument on-board the ERS-2 satellite which is able to measure a range of important atmospheric trace constituents on a global scale. Atmospheric UV/visible backscatter spectra obtained by the GOME spectrometer were used to retrieve column amounts of key trace species associated with biomass burning events and ozone hole chemistry. In particular, the column distributions of ozone (O3), nitrogen dioxide (NO2), formaldehyde (CH2O), and bromine-monoxide (BrO) were retrieved on an operational basis. The differential optical absorption spectroscopy technique (DOAS) is applied to backscatter spectra and yields slant column distributions of the aforementioned species. Additionally, the vertical columns of O3 and NO2 are provided. A strong enhancement of both the NO2 and CH2O contents were detected during the severe biomass burning event in September 1997 in SE Asia. A higher NO2 content is apparent over a large area within the smoke clouds, where formaldehyde is detected only in areas closest to combustion sources. BrO has been detected on a global scale and under Antarctic winter (ozone hole) conditions. The knowledge about the spatial distribution and the amount of BrO is of high relevance because BrO is a key species for the depletion of stratospheric ozone.

Paper Details

Date Published: 8 December 1999
PDF: 10 pages
Proc. SPIE 3867, Satellite Remote Sensing of Clouds and the Atmosphere IV, (8 December 1999); doi: 10.1117/12.373068
Show Author Affiliations
Werner Thomas, DLR (Germany)
Albrecht von Bargen, DLR (Germany)
Ernst Hegels, DLR (Germany)
Sander Slijkhuis, DLR (Germany)
Kelly Van Chance, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Robert J. D. Spurr, Harvard-Smithsonian Ctr. for Astrophysics (United States)

Published in SPIE Proceedings Vol. 3867:
Satellite Remote Sensing of Clouds and the Atmosphere IV
Jaqueline E. Russell, Editor(s)

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