Absorption measurements of Nodularia spumigena bloom from Lake Bante In Wilhelmshaven, Germany

doi: 10.4121/21610995.v2
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doi: 10.4121/21610995
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Jochen Wollschläger; Michelle Albinus; Shungudzemwoyo P. Garaba (2023): Absorption measurements of Nodularia spumigena bloom from Lake Bante In Wilhelmshaven, Germany. Version 2. 4TU.ResearchData. dataset. https://doi.org/10.4121/21610995.v2
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version 2 - 2023-09-18 (latest)
version 1 - 2022-11-24
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Lake Bant, Wilhelmshaven, Germany
lat (N): 53.5078897
lon (E): 8.1015643
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time coverage
August 2021 - August 2022
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We derived the absorption coefficients (m-1) from 400 to 700 nm at 2 nm resolution of surface water samples from the German Lake Bante in Wilhemshaven. The water samples were analyzed for the total absorption coefficients of the unfiltered water (a_tot) and colored dissolved organic material (a_cdom) after filtration using a membrane filter of 0.2 µm pore size. Absorption coefficient of algal material (a_ph) was computed as the difference between a_tot and a_cdom under the assumption that no contribution was expected from suspended particulate solids. Absorption coefficient measurements were conducted in a point-source integrating-cavity absorption meter (PSICAM) with a sample chamber volume of ~400 mL. Information about the PSICAM measurements, calibration of the instrument and data correction are explained more in literature (Leathers et al., 2000; Röttgers et al.,2007). Raw data is available upon reasonable request from the authors.

  • 2022-11-24 first online
  • 2023-09-18 published, posted
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  • Deutsche Forschungsgemeinschaft grant no. 417276871
  • Discovery Element of the European Space Agency’s Basic Activities contract no. 4000132037/20/NL/GLC.
Institut für Chemie und Biologie des Meeres (ICBM); Carl von Ossietzky Universität Oldenburg


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