10900
doi
10.5281/zenodo.10900
oai:zenodo.org:10900
user-asi
Schneider-Zapp, Klaus
School of Marine Science and Technology, Newcastle University, UK
Reith, Svenja
Institute for Environmental Physics, Heidelberg University, Germany and Heidelberg Collaboratory for Image Processing, Heidelberg University, Germany
Kiefhaber, Daniel
Institute for Environmental Physics, Heidelberg University, Germany and Heidelberg Collaboratory for Image Processing, Heidelberg University, Germany
Jähne, Bernd
Institute for Environmental Physics, Heidelberg University, Germany and Heidelberg Collaboratory for Image Processing, Heidelberg University, Germany
Air-Sea Gas Exchange under Nature-Like Surfactant Influence in the Lab
Krall, Kerstin E.
Institute for Environmental Physics, Heidelberg University, Germany
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
air-sea gas exchange
sea surface microlayer
<p>For the first time, air-sea gas exchange measurements under the influence of four surface active substances also found in the sea surface microlayer were performed in the Aeolotron wind-wave tank. Chosen surfactants were Dextran which is water soluble, as well as the insoluble substances Mono-Galactosyl-Diacylglycerol, Palmitic Acid and Phosphatidylglycerol. Gas transfer velocities of N2O and C2HF5 were measured using a mass balance approach combined with FT-IR spectroscopic methods. In addition, wave parameters like the mean square slope of the water surface were monitored. It was found that Dextran alone does not significantly decrease the gas transfer velocity compared to the clean water surface, while reduction for the full mix of surfactants was as high as 70%. For the full mix of surfactants, at a wind speed of around 7m/s the surfactant film ruptured and was mixed down into the water bulk where it was inefficient in suppressing gas transfer.</p>
Zenodo
2014-03-25
info:eu-repo/semantics/conferencePoster
605370
user-asi
1579537302.477785
2387166
md5:af0dff006b0a3e5f95b16d4a2f16d024
https://zenodo.org/records/10900/files/kerstin-krall-poster-SOPRAN-2014-surfactants.pdf
public
isVersionOf
doi