Extreme in Sulphur Dioxide Concentration in the Planetary Boundary Layerin Southern South América - Comparison of Mega Cities

Authors

  • Mateus Dias Nunes Universidade Federal de Pelotas, Faculdade de Meteorologia
  • Glauber Lopes Mariano Universidade Federal de Pelotas, Faculdade de Meteorologia
  • Ericka Voss Chagas Mariano Universidade Federal de Pelotas, Faculdade de Meteorologia

DOI:

https://doi.org/10.11137/2015_2_127_136

Keywords:

Sulfur dioxide, South America, OMI Sensor

Abstract

In this study the value of the sulfur dioxide (SO2) total column was assessed, to some of the major metropolitan areas of southern South America (Porto Alegre, Montevideo, Buenos Aires), using data from the sensor OMI (Ozone Monitoring Instrument) for the period 2005-2012. Their annual and monthly variations were investigated using the 99% percentile (P99) for the maximum daily values of the SO2 total column in the planetary boundary layer (PBL). Among the regions analyzed, Montevideo had the highest value of P99 reaching 4,90 DU, being the region more contaminated by SO2 of southern South America. The histograms indicate that the highest frequencies for the three regions analyzed are given in the first four classes of intervals. It was observed increasing values of trend line in the dispersion of the data for the three regions for the same period analyzed.

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Published

2016-05-10

Issue

Vol. 38 No. 2 (2015)

Section

não definida

License

This journal is licensed under a Creative Commons — Attribution 4.0 International — CC BY 4.0, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.