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Proceedings Paper

Ozone, nitrogen dioxide, and BrO total columns over Évora-Portugal during 2007-2008
Author(s): Ana F. Domingues; Daniele Bortoli; Manuel Antón; Ana M. Silva
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Paper Abstract

Since the recognition during the seventies of the importance played by the minor atmospheric compounds in the climate system (gases and aerosols), the studies regarding the chemistry and dynamical processes of Ozone (O3) and of nitrogen dioxide (NO2) at high and mid-latitudes, became a fruitful field of research. This work deals mainly with the retrieval and analysis of O3 and NO2 total columns and vertical profiles over the Evora Observatory (South of Portugal) for the period 2007-2008. The products presented in this paper are obtained from spectral measurements carried out with the UV-Vis. Spectrometer for Atmospheric Tracers Monitoring - SPATRAM, installed at the Observatory of the Geophysics Centre of Evora (CGE) since 2004. The application of the Differential Optical Absorption Spectroscopy (DOAS) algorithms to the spectral zenith-sky measurements is presented and discussed. The inversion technique applied to the output of the DOAS procedures (the trace gases content along the optical path of measurements: the slant column densities -SCD- of the analyzed absorber) are examined. The first observations obtained with the SPATRAM instrument regarding stratospheric bromine oxide (BrO) are shown. In addition, the comparison of the ground-based measurements with data derived from satellite equipments (OMI and SCIAMACHY), are discussed.

Paper Details

Date Published: 24 September 2009
PDF: 11 pages
Proc. SPIE 7475, Remote Sensing of Clouds and the Atmosphere XIV, 74751L (24 September 2009); doi: 10.1117/12.830460
Show Author Affiliations
Ana F. Domingues, Univ. de Évora (Portugal)
Daniele Bortoli, Univ. de Évora (Portugal)
Institute of Atmospheric Sciences and Climate, CNR (Italy)
Manuel Antón, Univ. de Extremadura (Spain)
Ana M. Silva, Univ. de Évora (Portugal)

Published in SPIE Proceedings Vol. 7475:
Remote Sensing of Clouds and the Atmosphere XIV
Richard H. Picard; Klaus Schäfer; Adolfo Comeron; Evgueni I. Kassianov; Christopher J. Mertens, Editor(s)

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