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The flask monitoring program for high-precision atmospheric measurements of greenhouse gases, stable isotopes, and radiocarbon in the central Amazon region

Long-term and high-precision measurements of the mole fraction of greenhouse gases (GHG), together with their isotopic composition, are of fundamental importance to understand land-atmosphere interactions. Current flask monitoring programs have important information gaps in large regions of the Eart...

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Autori principali: Sierra, Carlos (Autore) , Chanca, Ingrid (Autore) , Andreae, Meinrat O. (Autore) , de Araújo, Alessandro Carioca (Autore) , van Asperen, Hella (Autore) , Borchardt, Lars (Autore) , Botía, Santiago (Autore) , Candido, Luiz Antonio (Autore) , Correa, Caio S. C. (Autore) , Dias-Junior, Cléo Quaresma (Autore) , Eritt, Markus (Autore) , Fröhlich, Annica (Autore) , Gatti, Luciana V. (Autore) , Guderle, Marcus (Autore) , Hammer, Samuel (Autore) , Heimann, Martin (Autore) , Horna, Viviana (Autore) , Jordan, Armin (Autore) , Knabe, Steffen (Autore) , Kneißl, Richard (Autore) , Lavric, Jost Valentin (Autore) , Levin, Ingeborg (Autore) , Macario, Kita (Autore) , Menger, Juliana (Autore) , Moossen, Heiko (Autore) , Quesada, Carlos Alberto (Autore) , Rothe, Michael (Autore) , Rödenbeck, Christian (Autore) , Santos, Yago (Autore) , Steinhof, Axel (Autore) , Takeshi, Bruno (Autore) , Trumbore, Susan (Autore) , Zaehle, Sönke (Autore)
Natura: Article (Journal)
Lingua:inglese
Pubblicazione: 05 November 2025
In: Earth system science data
Year: 2025, Volume: 17, Fascicolo: 11, Pages: 5871-5884
ISSN:1866-3516
DOI:10.5194/essd-17-5871-2025
Accesso online:Verlag, kostenfrei, Volltext: https://doi.org/10.5194/essd-17-5871-2025
Verlag, kostenfrei, Volltext: https://essd.copernicus.org/articles/17/5871/2025/
Testo
Note sull'autore:Carlos A. Sierra, Ingrid Chanca, Meinrat O. Andreae, Alessandro Carioca de Araújo, Hella van Asperen, Lars Borchardt, Santiago Botía, Luiz Antonio Candido, Caio S. C. Correa, Cléo Quaresma Dias-Junior, Markus Eritt, Annica Fröhlich, Luciana V. Gatti, Marcus Guderle, Samuel Hammer, Martin Heimann, Viviana Horna, Armin Jordan, Steffen Knabe, Richard Kneißl, Jost Valentin Lavric, Ingeborg Levin, Kita Macario, Juliana Menger, Heiko Moossen, Carlos Alberto Quesada, Michael Rothe, Christian Rödenbeck, Yago Santos, Axel Steinhof, Bruno Takeshi, Susan Trumbore, Sönke Zaehle
Descrizione
Riassunto:Long-term and high-precision measurements of the mole fraction of greenhouse gases (GHG), together with their isotopic composition, are of fundamental importance to understand land-atmosphere interactions. Current flask monitoring programs have important information gaps in large regions of the Earth, particularly in the southern hemisphere and in continental tropical regions. Here, we report on the initiation of a monitoring program and the resulting dataset of high-precision GHG measurements at the Amazon Tall Tower Observatory (ATTO), located in the central Amazon region of Brazil. In September 2021, we installed an automated flask sampler designed and built by the Integrated Carbon Observation System (ICOS) to collect air samples in 3 L flasks at a height of 324 m above ground level (ma.g.l.). Samples are collected weekly, during a one-hour integration time between 13:00 and 14:00 h LT (17:00-18:00 UTC). The flasks are shipped to Jena, Germany, for analyses of CO2, CO, CH4, N2O, H2, SF6, δ13C−CO2, Δ14C−CO2, δ18O−CO2, δ13C−CH4, δ2H−CH4, O2/N2, and Ar/N2 at the laboratories of the Max Planck Institute for Biogeochemistry (MPI-BGC). Measurements from this monitoring program provide reference information for this site and act as an additional independent quality control for other measurements in the region. The record of SF6 and simulations based on a regional atmospheric transport model suggest that the footprint of the measurements is predominantly from the southeasterly and northeasterly directions. The time series of the different gas species measured in this monitoring program are being made publicly available through the ATTO data portal (https://doi.org/10.17871/ATTO.574.13.2365, Sierra et al., 2025).
Descrizione del documento:Gesehen am 24.04.2026
Online veröffentlicht: 5. November 2025
Descrizione fisica:Online Resource
ISSN:1866-3516
DOI:10.5194/essd-17-5871-2025

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