Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance
Colored Dissolved Organic Matter (CDOM) is an important optical constituent in seawater, which significantly attenuates the violet to blue portion of visible light. Thus, CDOM reduces the radiation energy available to phytoplankton and affects remote-sensing signals. We present data from two cruises...
Published in: | Journal of Marine Systems |
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Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2014
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Online Access: | https://portal.findresearcher.sdu.dk/da/publications/6adfe00f-9b2f-48d3-89db-66e86f058439 https://doi.org/10.1016/j.jmarsys.2012.06.006 https://findresearcher.sdu.dk/ws/files/66460976/Hancke_etal_2012_Optical_properties_of_CDOM_Origin_distribution_signnificance.pdf |
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ftsydanskunivpub:oai:sdu.dk:publications/6adfe00f-9b2f-48d3-89db-66e86f058439 2024-06-23T07:50:13+00:00 Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance Hancke, Kasper Hovland, Erlend K. Volent, Zsolt Pettersen, Ragnhild Johnsen, Geir Moline, Mark Sakshaug, Egil 2014 application/pdf https://portal.findresearcher.sdu.dk/da/publications/6adfe00f-9b2f-48d3-89db-66e86f058439 https://doi.org/10.1016/j.jmarsys.2012.06.006 https://findresearcher.sdu.dk/ws/files/66460976/Hancke_etal_2012_Optical_properties_of_CDOM_Origin_distribution_signnificance.pdf eng eng https://portal.findresearcher.sdu.dk/da/publications/6adfe00f-9b2f-48d3-89db-66e86f058439 info:eu-repo/semantics/openAccess Hancke , K , Hovland , E K , Volent , Z , Pettersen , R , Johnsen , G , Moline , M & Sakshaug , E 2014 , ' Optical properties of CDOM across the Polar Front in the Barents Sea : Origin, distribution and significance ' , Journal of Marine Systems , vol. 130 , pp. 219-227 . https://doi.org/10.1016/j.jmarsys.2012.06.006 Colored dissolved organic matter CDOM light absorption remote sensing Arctic Barents Sea Polar Front article 2014 ftsydanskunivpub https://doi.org/10.1016/j.jmarsys.2012.06.006 2024-06-11T14:17:07Z Colored Dissolved Organic Matter (CDOM) is an important optical constituent in seawater, which significantly attenuates the violet to blue portion of visible light. Thus, CDOM reduces the radiation energy available to phytoplankton and affects remote-sensing signals. We present data from two cruises transecting the Polar Front from Atlantic to Arctic waters in the Barents Sea, in 2007 and 2008. The latter took place during the spring bloom of phytoplankton in May (0.2<[Chl a]<13mgm -3 ) and the former during August (max. [Chl a]<2mgm -3 ). Absorption by CDOM at 443nm ranged from 0.004 to 0.080m -1 during May and from 0.006 to 0.162m -1 during August. Surprisingly, CDOM absorption differed little across the Polar Front, but was higher during August than during May (P<0.05). The slope coefficient of the absorption spectra (S) ranged from 0.008 to 0.036nm -1 (mean=0.015nm - 1) including both cruises, and varied little across the Front (P>0.05). The CDOM remote sensing product from GlobColour correlated well with sampled data (R 2 =0.73) during May. However, during August the satellite product performed poorly (R 2 =0.02) due to extensive scattering caused by coccolithophorids in the Atlantic Water. The CDOM pool was of autochthonous (marine) origin as characterized from its S vs. absorption relationship. Modeling showed that CDOM, on average, contributed equally to the light absorption as did phytoplankton (at 1mg Chl a m -3 ), and thereby reduces the amount of light available for primary production. Article in Journal/Newspaper Arctic Barents Sea Phytoplankton University of Southern Denmark Research Portal Arctic Barents Sea Journal of Marine Systems 130 219 227 |
institution |
Open Polar |
collection |
University of Southern Denmark Research Portal |
op_collection_id |
ftsydanskunivpub |
language |
English |
topic |
Colored dissolved organic matter CDOM light absorption remote sensing Arctic Barents Sea Polar Front |
spellingShingle |
Colored dissolved organic matter CDOM light absorption remote sensing Arctic Barents Sea Polar Front Hancke, Kasper Hovland, Erlend K. Volent, Zsolt Pettersen, Ragnhild Johnsen, Geir Moline, Mark Sakshaug, Egil Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
topic_facet |
Colored dissolved organic matter CDOM light absorption remote sensing Arctic Barents Sea Polar Front |
description |
Colored Dissolved Organic Matter (CDOM) is an important optical constituent in seawater, which significantly attenuates the violet to blue portion of visible light. Thus, CDOM reduces the radiation energy available to phytoplankton and affects remote-sensing signals. We present data from two cruises transecting the Polar Front from Atlantic to Arctic waters in the Barents Sea, in 2007 and 2008. The latter took place during the spring bloom of phytoplankton in May (0.2<[Chl a]<13mgm -3 ) and the former during August (max. [Chl a]<2mgm -3 ). Absorption by CDOM at 443nm ranged from 0.004 to 0.080m -1 during May and from 0.006 to 0.162m -1 during August. Surprisingly, CDOM absorption differed little across the Polar Front, but was higher during August than during May (P<0.05). The slope coefficient of the absorption spectra (S) ranged from 0.008 to 0.036nm -1 (mean=0.015nm - 1) including both cruises, and varied little across the Front (P>0.05). The CDOM remote sensing product from GlobColour correlated well with sampled data (R 2 =0.73) during May. However, during August the satellite product performed poorly (R 2 =0.02) due to extensive scattering caused by coccolithophorids in the Atlantic Water. The CDOM pool was of autochthonous (marine) origin as characterized from its S vs. absorption relationship. Modeling showed that CDOM, on average, contributed equally to the light absorption as did phytoplankton (at 1mg Chl a m -3 ), and thereby reduces the amount of light available for primary production. |
format |
Article in Journal/Newspaper |
author |
Hancke, Kasper Hovland, Erlend K. Volent, Zsolt Pettersen, Ragnhild Johnsen, Geir Moline, Mark Sakshaug, Egil |
author_facet |
Hancke, Kasper Hovland, Erlend K. Volent, Zsolt Pettersen, Ragnhild Johnsen, Geir Moline, Mark Sakshaug, Egil |
author_sort |
Hancke, Kasper |
title |
Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
title_short |
Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
title_full |
Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
title_fullStr |
Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
title_full_unstemmed |
Optical properties of CDOM across the Polar Front in the Barents Sea:Origin, distribution and significance |
title_sort |
optical properties of cdom across the polar front in the barents sea:origin, distribution and significance |
publishDate |
2014 |
url |
https://portal.findresearcher.sdu.dk/da/publications/6adfe00f-9b2f-48d3-89db-66e86f058439 https://doi.org/10.1016/j.jmarsys.2012.06.006 https://findresearcher.sdu.dk/ws/files/66460976/Hancke_etal_2012_Optical_properties_of_CDOM_Origin_distribution_signnificance.pdf |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Phytoplankton |
genre_facet |
Arctic Barents Sea Phytoplankton |
op_source |
Hancke , K , Hovland , E K , Volent , Z , Pettersen , R , Johnsen , G , Moline , M & Sakshaug , E 2014 , ' Optical properties of CDOM across the Polar Front in the Barents Sea : Origin, distribution and significance ' , Journal of Marine Systems , vol. 130 , pp. 219-227 . https://doi.org/10.1016/j.jmarsys.2012.06.006 |
op_relation |
https://portal.findresearcher.sdu.dk/da/publications/6adfe00f-9b2f-48d3-89db-66e86f058439 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.jmarsys.2012.06.006 |
container_title |
Journal of Marine Systems |
container_volume |
130 |
container_start_page |
219 |
op_container_end_page |
227 |
_version_ |
1802641089540128768 |