Ground-based total ozone column measurements and their diurnal variability
Article first published online: 12 JUL 2013
©2013. American Geophysical Union. All Rights Reserved.
Journal of Geophysical Research: Atmospheres
Volume 118, Issue 13, pages 7344–7349, 16 July 2013
How to Cite
2013), Ground-based total ozone column measurements and their diurnal variability, J. Geophys. Res. Atmos., 118, 7344–7349, doi:10.1002/jgrd.50568.(
- Issue published online: 24 JUL 2013
- Article first published online: 12 JUL 2013
- Accepted manuscript online: 12 JUN 2013 08:56PM EST
- Manuscript Accepted: 8 JUN 2013
- Manuscript Revised: 3 JUN 2013
- Manuscript Received: 15 APR 2013
- Conselho Nacional de Desenvolvimento Científico e Tecnológico. Grant Number: 471159/2004-2
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais. Grant Number: CRA APQ 0848–5.02/07
 Three Brewer spectrophotometers were set up in three tropical sites of South America (in the Bolivian Altiplano and seashore and biomass burning areas of Brazil) to measure the total ozone column (TOC). Only TOC measurements with uncertainties ≤1% (1σ) were considered. Typically, the standard deviation for the diurnal sets of measurements was predominantly ≤1% for two of these sites. The average variability in TOC ranged from 6.3 Dobson units (DU) to 16.8 DU, and the largest variability reached 54.3 DU. Comparisons between ground-based and satellite (Total Ozone Mapping Spectrometer (TOMS)) data showed good agreement with coefficients of determination ≤0.83. However, the quality of the ground-based measurements was affected by the weather condition, especially for one of the sites. Visual observation of the sky from the ground during the measurements with one of the Brewers added to the satellite data of reflectivity and aerosol index supports that statement.