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

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Authors

PÖHLKER Christopher WALTER David PAULSEN Hauke KONEMANN Tobias RODRIGUEZ-CABALLERO Emilio MORAN-ZULOAGA Daniel BRITO Joel CARBONE Samara DEGRENDELE Celine DESPRES Viviane R. DITAS Florian HOLANDA Bruna A. KAISER Johannes W. LAMMEL Gerhard LAVRIC Jost V. MING Jing PICKERSGILL Daniel POHLKER Mira L. PRASS Maria LOBS Nina SATURNO Jorge SORGEL Matthias WANG Qiaoqiao WEBER Bettina WOLFF Stefan ARTAXO Paulo POSCHL Ulrich ANDREAE Meinrat O.

Year of publication 2019
Type Article in Periodical
Magazine / Source Atmospheric Chemistry and Physics
MU Faculty or unit

Faculty of Science

Citation
Web Full Text
Doi http://dx.doi.org/10.5194/acp-19-8425-2019
Keywords DISPERSION MODEL FLEXPART; CLOUD CONDENSATION NUCLEI; SEA-SURFACE TEMPERATURES; LONG-TERM OBSERVATIONS; CLIMATE-CHANGE; BRAZILIAN AMAZON; RAIN-FOREST; BOUNDARY-LAYER; AIR-POLLUTION; TRACE GASES
Description The Amazon rain forest experiences the combined pressures from human-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, and 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 human-caused transformations of Amazonia. We conclude that the chances to observe an unperturbed rain forest-atmosphere exchange at the ATTO site will likely decrease in the future, whereas the atmospheric signals from human-made and climate-change-related forest perturbations will increase in frequency and intensity.
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