Behaviour of dissolved organic matter during formation of natural and artificially grown Baltic Sea ice

Susann Mueller, Anssi Vähätalo, Mats Granskog, Riitta Autio, Hermanni Kaartokallio

Tutkimustuotos: ArtikkelijulkaisuKatsausartikkeliTieteellinenvertaisarvioitu

Kuvaus

ABSTRACT. During sea-ice formation, the dissolved constituents of water are rejected from ice crystals.
The initial fractionation of dissolved organic matter (DOM) in the Baltic Sea ice was studied through
two freezing experiments and by sampling natural sea ice. DOM was characterized by the spectral
absorption of chromophoric DOM (CDOM) and the parallel factor analysis of DOM fluorescence.
Molecular weight measurements of DOM were applied to assess changes in the molecular size
distribution of DOM in new sea ice relative to parent sea water. Both in the newly formed artificial and
the natural sea ice, CDOM was enriched by 34–39% relative to salinity. The same three identified DOM
fluorophores were present both in sea water and ice but enriched by 15–54% relative to salinity in ice.
After the incorporation of DOM into ice, the ageing of ice decreased the spectral slope coefficient and
the molecular weight of DOM. This study shows that physical processes during freezing of brackish
water enrich chromo- and fluorophoric DOM relative to salts in sea ice.
Alkuperäiskielienglanti
LehtiAnnals of Glaciology
Vuosikerta52
Numero57
Sivut233-241
Sivumäärä9
ISSN0260-3055
TilaJulkaistu - 2011
OKM-julkaisutyyppiA2 Katsausartikkeli tieteellisessä aikakauslehdessä

Tieteenalat

  • 1181 Ekologia, evoluutiobiologia

Lainaa tätä

Mueller, Susann ; Vähätalo, Anssi ; Granskog, Mats ; Autio, Riitta ; Kaartokallio, Hermanni. / Behaviour of dissolved organic matter during formation of natural and artificially grown Baltic Sea ice. Julkaisussa: Annals of Glaciology. 2011 ; Vuosikerta 52, Nro 57. Sivut 233-241.
@article{521ab8deb9f14036ad431df30aa31f6d,
title = "Behaviour of dissolved organic matter during formation of natural and artificially grown Baltic Sea ice",
abstract = "ABSTRACT. During sea-ice formation, the dissolved constituents of water are rejected from ice crystals.The initial fractionation of dissolved organic matter (DOM) in the Baltic Sea ice was studied throughtwo freezing experiments and by sampling natural sea ice. DOM was characterized by the spectralabsorption of chromophoric DOM (CDOM) and the parallel factor analysis of DOM fluorescence.Molecular weight measurements of DOM were applied to assess changes in the molecular sizedistribution of DOM in new sea ice relative to parent sea water. Both in the newly formed artificial andthe natural sea ice, CDOM was enriched by 34–39{\%} relative to salinity. The same three identified DOMfluorophores were present both in sea water and ice but enriched by 15–54{\%} relative to salinity in ice.After the incorporation of DOM into ice, the ageing of ice decreased the spectral slope coefficient andthe molecular weight of DOM. This study shows that physical processes during freezing of brackishwater enrich chromo- and fluorophoric DOM relative to salts in sea ice.",
keywords = "1181 Ecology, evolutionary biology",
author = "Susann Mueller and Anssi V{\"a}h{\"a}talo and Mats Granskog and Riitta Autio and Hermanni Kaartokallio",
year = "2011",
language = "English",
volume = "52",
pages = "233--241",
journal = "Annals of Glaciology",
issn = "0260-3055",
publisher = "Cambridge University Press",
number = "57",

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Behaviour of dissolved organic matter during formation of natural and artificially grown Baltic Sea ice. / Mueller, Susann; Vähätalo, Anssi; Granskog, Mats; Autio, Riitta; Kaartokallio, Hermanni.

julkaisussa: Annals of Glaciology, Vuosikerta 52, Nro 57, 2011, s. 233-241.

Tutkimustuotos: ArtikkelijulkaisuKatsausartikkeliTieteellinenvertaisarvioitu

TY - JOUR

T1 - Behaviour of dissolved organic matter during formation of natural and artificially grown Baltic Sea ice

AU - Mueller, Susann

AU - Vähätalo, Anssi

AU - Granskog, Mats

AU - Autio, Riitta

AU - Kaartokallio, Hermanni

PY - 2011

Y1 - 2011

N2 - ABSTRACT. During sea-ice formation, the dissolved constituents of water are rejected from ice crystals.The initial fractionation of dissolved organic matter (DOM) in the Baltic Sea ice was studied throughtwo freezing experiments and by sampling natural sea ice. DOM was characterized by the spectralabsorption of chromophoric DOM (CDOM) and the parallel factor analysis of DOM fluorescence.Molecular weight measurements of DOM were applied to assess changes in the molecular sizedistribution of DOM in new sea ice relative to parent sea water. Both in the newly formed artificial andthe natural sea ice, CDOM was enriched by 34–39% relative to salinity. The same three identified DOMfluorophores were present both in sea water and ice but enriched by 15–54% relative to salinity in ice.After the incorporation of DOM into ice, the ageing of ice decreased the spectral slope coefficient andthe molecular weight of DOM. This study shows that physical processes during freezing of brackishwater enrich chromo- and fluorophoric DOM relative to salts in sea ice.

AB - ABSTRACT. During sea-ice formation, the dissolved constituents of water are rejected from ice crystals.The initial fractionation of dissolved organic matter (DOM) in the Baltic Sea ice was studied throughtwo freezing experiments and by sampling natural sea ice. DOM was characterized by the spectralabsorption of chromophoric DOM (CDOM) and the parallel factor analysis of DOM fluorescence.Molecular weight measurements of DOM were applied to assess changes in the molecular sizedistribution of DOM in new sea ice relative to parent sea water. Both in the newly formed artificial andthe natural sea ice, CDOM was enriched by 34–39% relative to salinity. The same three identified DOMfluorophores were present both in sea water and ice but enriched by 15–54% relative to salinity in ice.After the incorporation of DOM into ice, the ageing of ice decreased the spectral slope coefficient andthe molecular weight of DOM. This study shows that physical processes during freezing of brackishwater enrich chromo- and fluorophoric DOM relative to salts in sea ice.

KW - 1181 Ecology, evolutionary biology

M3 - Review Article

VL - 52

SP - 233

EP - 241

JO - Annals of Glaciology

JF - Annals of Glaciology

SN - 0260-3055

IS - 57

ER -