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Variabilidade Espaço-Temporal do Monóxido de Carbono Sobre a América do Sul a Partir de Dados de Satélite de 2003 A 2012

Yara Luiza Farias dos Santos,R. Souza,J. M. Souza,R. V. Andreoli,M. T. Kayano,Igor O. Ribeiro,P. C. Guimarães

Published 2017 in Revista Brasileira De Meteorologia

ABSTRACT

Abstract Using the information of the Earth Observation System/AQUA (EOS/AQUA) satellite during the 2003-2012 period, thepresent work investigates the tropospheric carbon monoxide (CO) behavior over the central South American region, andits spatiotemporal variability. The results show a well-defined seasonal behavior of the CO concentration, with decreaseduring the wet season and increase during dry season, due to the biomass burning increase during this period. Since thebiomass burning is directly associated with the climate variability, through the rainfall decrease/increase in the centraland eastern South American sector, the CO possesses high variability in central Brazil, the region with the largest num-ber of burning focus. The results also show that the CO variability in the interanual time scale is related to the ElNino/Southern Oscillation (ENSO) phenomenon, such that rainfall reduction (increase) in the central and eastern part ofSouth America during the La Nina (El Nino) onset phase contributes to increase (reduce) the biomass burning and inconsequence the CO emission in this region. On the other hand, during the ENSO mature stage, the great rainfall and COconcentration variabilities occur in the northern and northeastern South American regions. The results presented in thispaper might be useful for monitoring activities.

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