Direct measurements can help to understand the changes in ecosystems
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2023
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EGU GENERAL ASSEMBLY
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The Amazon is the largest rainforest on the planet and was an important carbon sink. The carbon
sink is declining, mainly due to an increase in tree mortality as a result of deforestation,
degradation, and local, regional and global climate change. In addition, deforestation and forest
degradation reduce the ability of the Amazon rainforest to act as a carbon sink. CO2 Vertical
Profiles (VP) were performed from 2010 to 2021 (805), using small aircraft at 4 locations: SAN
(2.86° S 54.95° W), ALF (8.80° S 56.75° W), RBA (9.38° S 67.62° W) and from 2010 to 2012 on TAB
(5.96° S 70.06° W) and since 2013 at TEF (3.39° S 65.55° W). The question if Amazonia is a carbon
source or sink is an important role in the global carbon budget. Amazonia vertical profile annual
mean derived from CO2 annual mean vertical profiles (VP subtracted from the background
concentration: ΔVP) from the 4 studied sites can help to clarify this important question. The
sampling frequency was approximately 2 times per month in each location, from 4.4 km height
(a.s.l.) until near surface 300 m (a.s.l.), and usually carried out between 12:00 and 13:00 local time.
The CO2 samples were analyzed at INPE's LaGEE (Greenhouse Gas Laboratory), in São Jose dos
Campos. This result is a direct indication of the regional source in the global carbon budget,
indeed there are well-known discrepancies from many studies using different methodologies
(bottom-up, top-down techniques, and a wide variety of global, regional, and inversion models). In
this study, we will present Carbon flux from the time series for the 4 sites and Amazon Carbon
balance using the column budget technique, and analyze the correlations with various parameters
related to climate, vegetation, deforestation, and biomass burning.
Como referenciar
GATTI, LUCIANA; CUNHA, CAMILLA; MARANI, LUCIANO; CASSOL, HENRIQUE; MESSIAS, CASSIANO; ARAI, EGIDIO; SOLER, LUCIANA; ALMEIDA, CLAUDIO; SETZER, ALBERTO; DOMINGUES, LUCAS; DENNING, SCOTT; MILLER, JOHN; GLOOR, MANUEL; CORREIA, CAIO; CRISPIM, STEPHANE; CORREA, SERGIO; NEVES, RAIANE; SILVA, FRANCINE; MACHADO, GUILHERME. Direct measurements can help to understand the changes in ecosystems: Amazonia a case study. In: EGU GENERAL ASSEMBLY, April 23-28, 2023, Vienna, Austria. Abstract... Göttingen, Germany: Copernicus, 2023. Disponível em: http://repositorio.ipen.br/handle/123456789/34452. Acesso em: 30 Dec 2025.
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.