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https://repositorio.inpa.gov.br/handle/1/16925
Título: | Impact of the biomass burning on methane variability during dry years in the Amazon measured from an aircraft and the AIRS sensor |
Autor: | Ribeiro, Igor Oliveira Andreoli, Rita Valéria Kayano, Mary Toshie Sousa, Thaiane Rodrigues de Medeiros, Adan Sady S. Guimarães, Patrícia Costa Barbosa, Cybelli G.G. Godoi, Ricardo Henrique Moreton Martin, Scot T. Souza, Rodrigo Augusto Ferreira de |
Palavras-chave: | Air Pollution Atmospheric Chemistry Carbon Carbon Monoxide Climate Change Deforestation Greenhouse Gases Methane Remote Sensing Aircraft Measurement Atmospheric Methanes Biomass-burning Climate Interannual Climate Variability Interannual Variability Lower Troposphere Spatiotemporal Variability Drought Carbon Monoxide Methane Airborne Survey Airs Annual Variation Atmospheric Pollution Biomass-burning Climate Variation Drought Greenhouse Gas Methane Remote Sensing Spatial Variation Temporal Variation Troposphere Aircraft Biomass Climate Change Combustion Deforestation Drought Priority Journal Season Spatio-temporal Analysis Amazonia |
Data do documento: | 2018 |
Revista: | Science of the Total Environment |
É parte de: | Volume 624, Pags. 509-516 |
Abstract: | The present study examines the spatiotemporal variability and interrelations of the atmospheric methane (CH4), carbon monoxide (CO) and biomass burning (BB) outbreaks retrieved from satellite data over the Amazon region during the 2003–2012 period. In the climatological context, we found consistent seasonal cycles of BB outbreaks and CO in the Amazon, both variables showing a peak during the dry season. The dominant CO variability mode features the largest positive loadings in the southern Amazon, and describes the interannual CO variations related to BB outbreaks along the deforestation arc during the dry season. In line with CO variability and BB outbreaks, the results show strong correspondence with the spatiotemporal variability of CH4 in the southern Amazon during years of intense drought. Indeed, the areas with the largest positive CH4 anomalies in southern Amazon overlap the areas with high BB outbreaks and positive CO anomalies. The analyses also showed that high (low) BB outbreaks in the southern Amazon occur during dry (wet) years. In consequence, the interannual climate variability modulates the BB outbreaks in the southern Amazon, which in turn have considerable impacts on CO and CH4 interannual variability in the region. Therefore, the BB outbreaks might play a major role in modulating the CH4 and CO variations, at least in the southern Amazon. This study also provides a comparison between the estimate of satellite and aircraft measurements for the CH4 over the southern Amazon, which indicates relatively small differences from the aircraft measurements in the lower troposphere, with errors ranging from 0.18% to 1.76%. © 2017 Elsevier B.V. |
DOI: | 10.1016/j.scitotenv.2017.12.147 |
Aparece nas coleções: | Artigos |
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