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Discussion papers | Copyright
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 05 Jun 2018

Research article | 05 Jun 2018

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This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Land cover and its transformation in the backward trajectory footprint region of the Amazon Tall Tower Observatory

Christopher Pöhlker1,*, David Walter1,*, Hauke Paulsen2,*, Tobias Könemann1, Emilio Rodríguez-Caballero1,a, Daniel Moran-Zuloaga1, Joel Brito3,b, Samara Carbone3,c, Céline Degrendele4, Viviane R. Després2, Florian Ditas1, Bruna A. Holanda1, Johannes W. Kaiser1, Gerhard Lammel1,4, Jošt V. Lavrič5, Jing Ming1, Daniel Pickersgill2, Mira L. Pöhlker1, Maria Praß1, Nina Ruckteschler1, Jorge Saturno1,d, Matthias Sörgel1, Qiaoqiao Wang1,e, Bettina Weber1, Stefan Wolff1, Paulo Artaxo3, Ulrich Pöschl1, and Meinrat O. Andreae1,6 Christopher Pöhlker et al.
  • 1Multiphase Chemistry, Biogeochemistry, and Air Chemistry Departments, Max Planck Institute for Chemistry, 55020 Mainz, Germany
  • 2Institute of Molecular Physiology, Johannes Gutenberg University, 55128 Mainz, Germany
  • 3Institute of Physics, University of São Paulo, São Paulo 05508-900, Brazil
  • 4Research Centre for Toxic Compounds in the Environment, Masaryk University, Faculty of Sciences, 625 00 Brno, Czech Republic
  • 5Department of Biogeochemical Systems, Max Planck Institute for Biogeochemistry, 07701 Jena, Germany
  • 6Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92037, USA
  • anow at: Department of Agronomy, Universidad de Almería, Spain
  • bnow at: Laboratory for Meteorological Physics, University Blaise Pascal, Clermont-Ferrand, France
  • cnow at: Federal University of Uberlândia, Uberlândia-MG, 38408-100, Brazil
  • dnow at: Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany
  • enow at: Institute for Environmental and Climate Research, Jinan University, China
  • *These authors contributed equally to this work.

Abstract. The Amazon rain forest experiences the combined pressures from man-made deforestation and progressing climate change, causing severe and potentially disruptive perturbations of the ecosystem's integrity and stability. To intensify research on critical aspects of Amazonian biosphere-atmosphere exchange, the Amazon Tall Tower Observatory (ATTO) has been established in the central Amazon Basin. Here we present a multi-year analysis of backward trajectories to derive an effective footprint region of the observatory, which spans large parts of the particularly vulnerable eastern basin. Further, we characterize geospatial properties of the footprint regions, such as climatic conditions, distribution of ecoregions, land cover categories, deforestation dynamics, agricultural expansion, fire regimes, infrastructural development, protected areas, as well as future deforestation scenarios. This study is meant to be a resource and reference work, helping to embed the ATTO observations into the larger context of man-made transformations of Amazonia. We conclude that the chances to observe an unperturbed rain forest-atmosphere exchange will likely decrease in the future, whereas the atmospheric signals from man-made and climate change-related forest perturbations will likewise increase in frequency and intensity.

Christopher Pöhlker et al.
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Christopher Pöhlker et al.
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Short summary
The Amazon Tall Tower Observatory (ATTO) has been established to monitor the rain forest's biosphere-atmosphere exchange, which experiences the combined pressures from man-made deforestation and progressing climate change. This work is meant to be a reference study, which characterizes various geospatial properties of the ATTO footprint region and shows how the man-made transformation of Amazonia may impact future atmospheric observations at ATTO.
The Amazon Tall Tower Observatory (ATTO) has been established to monitor the rain forest's...