Five years of CO2/CH4/CO measurements at the Amazon Tall Tower Observatory (ATTO, Brazil) - site and source area characterisation
Carregando...
Data
Data de publicação
2017
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL CARBON DIOXIDE CONFERENCE, 10th
Exportar
Resumo
The Amazon plays a major role in the global biogeochemical cycles of greenhouse gases (GHGs).
Interannual variations in the global atmospheric CO2 growth rate are strongly influenced by fluctuations
of carbon fluxes in tropical land areas. Methane, another important GHG, has large natural sources in
Amazon’s wetlands, as well as from biomass burning. Fires in the region are a large source of carbon
monoxide (CO), while the tropical troposphere is a major photochemical sink for this gas. Long-term
atmospheric observations of GHGs and related gases at ATTO are expected to provide critical data
for local, regional and global estimation of GHG budgets.
The Amazon Tall Tower Observatory (ATTO, Brazil; 2°08’S, 59°00’W), where a 325 m-tall tower is
currently being equipped with scientific measurement instrumentation, is the counterpart of the Zotino
Tall Tower Observatory (ZOTTO; 304 m-tall tower), located in central Siberia (Russia; 60°48’N,
89°21’E). Additionally, a number of campaign or continuous pilot measurements are taking place on
the ATTO site at and around a smaller tower and mast (both 80 m tall).
Since March 2012, we run continuous high-precision CO2/CH4/CO measurements at the 80 m walk-up
tower, with sample air inlets installed at five levels (79, 53, 38, 24, and 4 m a.g.l.). Two frequently
calibrated CRDS analyzers (G1301 and G1302; Picarro Inc., USA) are used for measuring CO2/CH4
and CO/CO2, respectively.
Due to the proximity of our measurements to the canopy (~ 35 m a.g.l.), the atmospheric signal is
partially influenced by local sources and sinks, which gives us valuable insights into local ecosystem
dynamics. In addition, under favorable conditions, we capture signals representative for a much larger
source area. Supported by STILT footprint simulations, we present an analysis of the diurnal, synoptic
and seasonal variability of the observed trace gas species and attempt a source attribution.
Como referenciar
LAVRIC, JOST V.; WALTER, DAVID; GERBIG, CHRISTOPH; KOCH, FRANK-THOMAS; GATTI, LUCIANA V.; ARAUJO, ALESSANDRO C.; CANDIDO, LUIZ A.; HEIMANN, MARTIN; ANDREAE, MEINRAT O.; TRUMBORE, SUSAN E. Five years of CO2/CH4/CO measurements at the Amazon Tall Tower Observatory (ATTO, Brazil) - site and source area characterisation. In: INTERNATIONAL CARBON DIOXIDE CONFERENCE, 10th, August 21-25, 2017, Interlaken, Switzerland. Abstract... Bern, Switzerland: Swiss Academy of Sciences (SCNAT), 2017. p. 67-67. Disponível em: http://repositorio.ipen.br/handle/123456789/29147. Acesso em: 26 Mar 2026.
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.