Comparison of OMI-DOAS total ozone column with ground-based measurements in Argentina


  • P. F. Orte UNIDEF (CITEDEF-CONICET); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • E. Luccini CONICET; Pontificia Universidad Católica Argentina
  • E. Wolfram Servicio Meteorológico Nacional; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Tecnológica Nacional
  • F. Nollas Servicio Meteorológico Nacional
  • J. Pallotta Centro de Investigaciones en Láseres y Aplicaciones, UNIDEF (CITEDEF-CONICET)
  • R. D'Elia Centro de Investigaciones en Láseres y Aplicaciones, UNIDEF (CITEDEF-CONICET); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)
  • G. Carbajal Servicio Meteorológico Nacional
  • N. Mbatha University of Zululand
  • N. Hlongwane University of Zululand



Total ozone column, OMI, Dobson, SAOZ, Argentina


Total ozone column (TOC) measurements through the Ozone Monitoring Instrument (OMI/NASA EOSAura) are compared with ground-based observations made using Dobson and SAOZ instruments for the period 2004–2019 and 2008–02/2020, respectively. The OMI data were inverted using the Differential Optical Absorption Spectroscopy algorithm (overpass OMI-DOAS). The four ground-based sites used for the analysis are located in subpolar and subtropical latitudes spanning from 34°S to 54°S in the Southern Hemisphere, in the Argentine cities of Buenos Aires (34.58°S, 58.36°W; 25 m a.s.l.), Comodoro Rivadavia (45.86°S, 67.50°W; 46 m a.s.l.), Río Gallegos (51.60°S, 69.30°W; 72 m a.s.l.) and Ushuaia (54.80°S, 68.30°W; 14 m a.s.l.). The linear regression analyzes showed correlation values greater than 0.90 for all sites. The OMI measurements revealed an overestimation of less than 4"‰% with respect to the Dobson instruments, while the comparison with the SAOZ instrument presented a very low underestimation of less than 1"‰%.


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Author Biographies

P. F. Orte, UNIDEF (CITEDEF-CONICET); Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Investigador Asociado

Centro de Investigaciones en Láseres y Aplicaciones

E. Luccini, CONICET; Pontificia Universidad Católica Argentina


Centro de Excelencia en Productos y Procesos de Córdoba

Facultad de Química e Ingeniería del Rosario

E. Wolfram, Servicio Meteorológico Nacional; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET); Universidad Tecnológica Nacional


Facultad Regional Buenos Aires

J. Pallotta, Centro de Investigaciones en Láseres y Aplicaciones, UNIDEF (CITEDEF-CONICET)


N. Mbatha, University of Zululand


Department of Geography

N. Hlongwane, University of Zululand

Department of Geography


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