Effect of biomass burning emission on carbon assimilation over Brazilian Pantanal

Currently, changes in rainfall regimes have intensified biomass burning in central Brazil. These fires, resulting mainly from anthropic action, emit large amounts of gases and aerosols into the atmosphere. The emission of these constituents in the dry season can drastically alter the functioning of...

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Bibliographic Details
Published in:	Theoretical and applied climatology Vol. 155; no. 2; pp. 999 - 1006
Main Authors:	Curado, Leone F. A., de Paulo, Sérgio R., da Silva, Haline J. Araújo, Palácios, Rafael S., Marques, João B., de Paulo, Iramaia Jorge Cabral, Dalmagro, Higo José, Rodrigues, Thiago Rangel
Format:	Journal Article
Language:	English
Published:	Vienna Springer Vienna 01-02-2024 Springer Nature B.V
Subjects:	Air temperature Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Atmospheric Sciences Biomass Biomass burning Black carbon Burning Carbon capture and storage Carbon dioxide Carbon dioxide flux Carbon dioxide measurements Carbon fixation Carbon sequestration Climatology Dry season Earth and Environmental Science Earth Sciences Emission Emissions Gases Photosynthetically active radiation Radiation Radiation measurement Rainfall Temperature measurement Waste Water Technology Water Management Water Pollution Control Brazil
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Summary:	Currently, changes in rainfall regimes have intensified biomass burning in central Brazil. These fires, resulting mainly from anthropic action, emit large amounts of gases and aerosols into the atmosphere. The emission of these constituents in the dry season can drastically alter the functioning of ecosystems. In this work, it was verified that the high concentrations of Black Carbon (BC) have a direct relationship with the air temperature and influence the carbon capture process. This study was the result of a long-term campaign carried out in the northern region of the Brazilian Pantanal, between 2017 and 2019. Measurements of CO 2 fluxes were evaluated together with measurements of temperature, radiation and BC concentrations. The results showed that in some episodes, the increase in BC concentration inhibits photosynthetically active radiation and increases air temperature. As a consequence of the increase in BC concentration, a reduction in carbon capture was observed. In a specific episode in October 2017, this work estimated a deficit of 1.65 kg.m −2 in CO 2 capture due to the emission of BC in the Pantanal.
ISSN:	0177-798X 1434-4483
DOI:	10.1007/s00704-023-04673-0