Seasonal signatures in SFG vibrational spectra of the sea surface nanolayer at Boknis Eck Time Series Station (SW Baltic Sea).

Laß, Kristian, Bange, Hermann W. and Friedrichs, Gernot (2013) Seasonal signatures in SFG vibrational spectra of the sea surface nanolayer at Boknis Eck Time Series Station (SW Baltic Sea). Open Access Biogeosciences (BG), 10 . pp. 5325-5334. DOI 10.5194/bg-10-5325-2013.

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Abstract

The very thin sea surface nanolayer on top of the sea surface microlayer, sometimes just one monomolecular layer thick, forms the interface between ocean and atmosphere. Due to the small dimension and tiny amount of substance, knowledge about the development of the layer in the course of the year is scarce. In this work, the sea surface nanolayer at Boknis Eck Time Series Station (BE), southwestern Baltic Sea, has been investigated over a period of three and a half years. Surface water samples were taken monthly by screen sampling and were analyzed in terms of organic content and composition by sum frequency generation spectroscopy, which is specifically sensitive to
interfacial layers. A yearly periodicity has been observed with a pronounced abundance of sea surface nanolayer material(such as carbohydrate-rich material) during the summer months. On the basis of our results we conclude that the abundance of organic material in the nanolayer at Boknis Eck is not directly related to phytoplankton abundance alone. We speculate that indeed sloppy feeding of zooplankton together with photochemical and/or microbial processing of organic precursor compounds is responsible for the pronounced seasonality.

Document Type: Article
Additional Information: BGD - Special Issue Boknis Eck Time Series Station (SW Baltic Sea) Editor(s): H. Bange, T. Treude, and S.W.A. Naqvi WOS:000323980300005
Keywords: surface microlayer, Boknis Eck
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > The Future Ocean - Cluster of Excellence > FO-R07
Kiel University
Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/bg-10-5325-2013
ISSN: 1726-4170
Projects: Boknis Eck, Future Ocean
Date Deposited: 28 Aug 2013 10:09
Last Modified: 10 Apr 2017 11:31
URI: http://oceanrep.geomar.de/id/eprint/21902

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