©2020 Biological and Chemical Oceanography Data Management Office.Funded by the U.S. National Science Foundation
©2020 Biological and Chemical Oceanography Data Management Office.This dataset includes individual absorbance spectra and excitation emission fluorescence spectra from river water sampled near-monthly from the Tapajós River, Brazil between 2016-2023. Both absorbance and fluorescence data were collected on a Horiba Aqualog spectrophotometer. Trends in optical absorbance and fluorescence maxima reveal signatures for DOM sourcing into the river as well as evidence for in-stream processing and molecular stability of exported organic matter.
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Water samples were collected near‐monthly from the Tapajós River upstream of Itaitubam Brazil (-4.3375,-56.06953). Three water samples (1 L) were collected at 0.5 m depth from the river across the channel in equal spacing and combined into a 4 L acid‐washed carboy to make a composite sample. The water was filtered through a 0.45 μm capsule filter with a peristaltic pump into acid‐rinsed high‐density polyethylene (HDPE) bottles. Filtered samples were kept cold during transport and immediately frozen upon transfer to the laboratory and kept in the dark until analysis.
Related datasets from the same study published in Kurek et al. (2025, doi: 10.1029/2025GB008545).
Related datasets from the same study published in Kurek et al. (2025, doi: 10.1029/2025GB008545).
Kurek, M., Muniz, R., Moura, J. M., Peucker-Ehrenbrink, B., Holmes, R., McKenna, A., Spencer, R. (2026). Absorbance and Excitation Emission spectra (EEMs) measurements of the Tapajós River, Brazil from 2016-2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-01-20 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/986855 [access date]
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This dataset is licensed under Creative Commons Attribution 4.0.
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