Atmospheric Ozone Variability in Central Brazil: A Spatiotemporal Analysis Across Three Distinct Biomes

Authors

  • Mutambi Songa

    Institute of Physics, Catholic University of Eastern Africa, Nairobi 62157–00200, Kenya
  • Amaury de Souza

    Institute of Physics, Federal University of Mato Grosso do Sul, Campo Grande, MS 79070-900, Brazil
  • Kelvy Rosalvo Alencar Cardoso

    Institute of Atmospheric Sciences (ICAT), Federal University of Alagoas (UFAL), Maceió 57072-970, Brazil
  • José Francisco de Oliveira-Júnior

    Institute of Atmospheric Sciences (ICAT), Federal University of Alagoas (UFAL), Maceió 57072-970, Brazil

DOI:

https://doi.org/10.30564/jasr.v8i3.10978
Received:16 May 2025 | Revised: 9 July 2025 | Accepted: 16 July 2025 | Published Online: 27 July 2025

Abstract

This study investigates the spatial and temporal variability of the Total Column Ozone (TCO) across three Brazilian biomes—Cerrado, Pantanal, and Atlantic Forest—between 2005 and 2020. Satellite-derived TCO data from the Ozone Monitoring Instrument (OMI) were used to assess monthly, seasonal, and interannual variations. Linear and polynomial regressions were applied to identify trends and variability, while descriptive and comparative statistics supported biome-specific characterization. The results reveal distinct seasonal cycles, with primary TCO peaks during the dry season (August–October), driven by intense solar radiation and biomass burning, and secondary peaks during the rainy season (March–May), likely influenced by stratospheric ozone transport. The Cerrado exhibited the highest TCO values and variability, followed by the Atlantic Forest and Pantanal. The observed upward TCO trend (~ 0.03 DU/year) is modest and biome-dependent, reflecting both global atmospheric circulation patterns (e.g., Brewer–Dobson, QBO) and localized human impacts such as land use change and fire regimes. Notably, the Pantanal showed the lowest TCO concentrations and interannual fluctuations, likely due to its flat topography and high humidity. This work emphasizes the importance of regionalized ozone monitoring in tropical ecosystems and supports public policy aimed at reducing emissions, protecting biodiversity, and mitigating climate impacts. The integration of satellite-based data and spatiotemporal analysis provides valuable insights for future climate-chemistry modeling in tropical regions.

Keywords:

Total Column Ozone; Cerrado; Pantanal; Atlantic Forest; Remote Sensing; Seasonal Variability; Atmospheric Dynamics

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How to Cite

Songa, M., Souza, A. de, Cardoso, K. R. A., & de Oliveira-Júnior, J. F. (2025). Atmospheric Ozone Variability in Central Brazil: A Spatiotemporal Analysis Across Three Distinct Biomes. Journal of Atmospheric Science Research, 8(3), 142–155. https://doi.org/10.30564/jasr.v8i3.10978

Issue

Vol. 8 , Iss. 3 (July 2025):

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Article

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Copyright © 2025 Mutambi Songa, Amaury de Souza, Kelvy Rosalvo Alencar Cardoso, José Francisco de Oliveira-Júnior

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This is an open access article under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) License.

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