1,1,5,6,2,3,1,4- 1Max Planck Institute for Chemistry, Atmospheric Chemistry, Mainz, Germany (a.edtbauer@mpic.de)
- 2Instituto Nacional de Pesquisas da Amazônia – INPA, Manaus, Brazil
- 3Instituto Federal de Educação Ciência e Tecnologia do Pará: Belem, Brazil
- 4Energy, Environment and Water Research Center, The Cyprus Institute, Nicosia, Cyprus
- 5Institute of Geophysics and Meteorology, University of Cologne, Cologne, Germany
- 6Institute of Climate and Energy Systems: Troposphere (ICE-3), Forschungszentrum Jülich, Jülich, Germany
We report long-term, vertically resolved measurements of biogenic volatile organic compounds (BVOCs) above pristine Amazon rainforest. Since March 2018, air from 80, 150, and 325 m on the 325 m Amazon Tall Tower Observatory (ATTO; ~150 km NE of Manaus) has been sequentially sampled (5 min per level, ~4 cycles per hour per height) via insulated Teflon lines to a proton-transfer-reaction time-of-flight mass spectrometer (PTR-ToF-MS) at ground level. The site sits on a plateau within terra firme rainforest, with prevailing NE–E winds transporting air over >1000 km of intact forest to the site. The system quantifies a multitude of BVOCs at sub-ppb levels. The dataset allows to investigate the variability of these BVOCs as a function of height (80-325m), time (0-24h) and season (wet, dry, transition). The extreme drought in 2023, due to an El Nino event, left a clear mark in some BVOCs. This unique record enables analysis of long-term trends and interannual variability and provides a baseline for assessing future atmospheric change.
How to cite: Edtbauer, A., Ringsdorf, A., Pfannerstill, E., Quaresma Dias Júnior, C., and Williams, J.: BVOC measurements in the Amazon rainforest: Results from vertically resolved long term measurements, EGU General Assembly 2026, Vienna, Austria, 3–8 May 2026, EGU26-13937, https://doi.org/10.5194/egusphere-egu26-13937, 2026.
