Pre-harvest sugarcane burning emission inventories based on remote sensing data in the state of Sao Paulo, Brazil

Autor(es)

Franca, Daniela ^[1] ; Longo, Karla ^[1] ; Rudorff, Bernardo ^[2] ; Aguiar, Daniel ^[2] ; Freitas, Saulo ^[1] ; Stockler, Rafael ^[1] ; Pereira, Gabriel ^[3]

Afiliação do(s) autor(es)

^[1] Natl Inst Space Res INPE, Ctr Weather Forecasting & Climate Studies CPTEC, BR-12630000 Cachoeira Paulista, SP - Brazil

^[2] Agrosatelite Geotecnol Aplicada Ltda, BR-88032005 Florianopolis, SC - Brazil

^[3] Fed Univ Stio Joao del Rei UFSJ, Dept Geosci DEGEO, BR-36301360 Sao Joao Del Rei - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Atmospheric Environment; v. 99, p. 446-456, DEC 2014.
• Citações Web of Science: 9

Resumo

The state of Sao Paulo is the largest sugarcane producer in Brazil, with a cultivated area of about 5.4 Mha in 2011. Approximately 2 Mha were harvested annually from 2006 to 2011 with the pre-harvest straw burning practice, which emits trace gases and particulate material to the atmosphere. The development of emission inventories for sugarcane straw burning is crucial in order to assess its environmental impacts. This study aimed to estimate annual emissions associated with the pre-harvest sugarcane burning practice in the state of Sao Paulo based on remote sensing maps and emission and combustion factors for sugarcane straw burning. Average estimated emissions (Gg/year) were 1130 +/- 152 for CO, 26 +/- 4 for NOx, 16 +/- 2 for CH4, 45 +/- 6 for PM2.5, 120 +/- 16 for PM10 and 154 +/- 21 for NMHC (non-methane hydrocarbons). An intercomparison among annual emissions from this study and annual emissions from four other different approaches indicated that the estimates obtained by satellite fire detection or low spatial resolution approaches tend to underestimate sugarcane burned area, due to unique characteristics of this type of biomass fire. Overall, our results also indicated that government actions to reduce sugarcane straw burning emissions are becoming effective. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 08/56252-0 - Environmental and socioeconomic impacts associated with the production and consumption of sugarcane ethanol in south central Brazil
• Beneficiário: Evlyn Márcia Leão de Moraes Novo
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático
• Processo FAPESP: 13/18884-2 - Impactos ambientais e socioeconômicos associados com a produção e consumo de etanol de cana-de-açúcar no Centro-Sul do Brasil
• Beneficiário: Daniela de Azeredo França
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado