Sixteen years of MOPITT satellite data strongly constrain Amazon CO fire emissions
Carregando...
Data
2022
Data de publicação:
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Atmospheric Chemistry and Physics
ODS
Exportar
Resumo
Despite the consensus on the overall downward trend in Amazon forest loss in the previous decade,
estimates of yearly carbon emissions from deforestation still vary widely. Estimated carbon emissions are currently
often based on data from local logging activity reports, changes in remotely sensed biomass, and remote
detection of fire hotspots and burned area. Here, we use 16 years of satellite-derived carbon monoxide (CO)
columns to constrain fire CO emissions from the Amazon Basin between 2003 and 2018. Through data assimilation,
we produce 3 d average maps of fire CO emissions over the Amazon, which we verified to be consistent
with a long-term monitoring programme of aircraft CO profiles over five sites in the Amazon. Our new product
independently confirms a long-term decrease of 54% in deforestation-related CO emissions over the study period.
Interannual variability is large, with known anomalously dry years showing a more than 4-fold increase in
basin-wide fire emissions relative to wet years. At the level of individual Brazilian states, we find that both soil
moisture anomalies and human ignitions determine fire activity, suggesting that future carbon release from fires
depends on drought intensity as much as on continued forest protection. Our study shows that the atmospheric
composition perspective on deforestation is a valuable additional monitoring instrument that complements existing
bottom-up and remote sensing methods for land-use change. Extension of such a perspective to an operational
framework is timely considering the observed increased fire intensity in the Amazon Basin between 2019 and
2021.
Como referenciar
NAUS, STIJN; DOMINGUES, LUCAS G.; KROL, MAARTEN; LUIJKX, INGRID T.; GATTI, LUCIANA V.; MILLER, JOHN B.; GLOOR, EMANUEL; BASU, SOURISH; CORREIA, CAIO; KOREN, GERBRAND; WORDEN, HELEN M.; FLEMMING, JOHANNES; PETRON, GABRIELLE; PETERS, WOUTER. Sixteen years of MOPITT satellite data strongly constrain Amazon CO fire emissions. Atmospheric Chemistry and Physics, v. 22, n. 22, p. 14735-14750, 2022. DOI: 10.5194/acp-22-14735-2022. Disponível em: http://repositorio.ipen.br/handle/123456789/33860. Acesso em: 26 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.