Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters
Climate change affects the Arctic with regards to permafrost thaw, sea-ice melt, alterations to the freshwater budget and increased export of terrestrial material to the Arctic Ocean. The Fram and Davis Straits represent the major gateways connecting the Arctic and Atlantic. Oceanographic surveys we...
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ftawi:oai:epic.awi.de:41843 2024-09-15T17:51:26+00:00 Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, Colin A. 2016-09 application/pdf https://epic.awi.de/id/eprint/41843/ https://epic.awi.de/id/eprint/41843/1/2016_Goncalves-Araujo_etal_SREP_FDOM_as_water_mass_tracer_Arctic.pdf http://www.nature.com/articles/srep33978 https://hdl.handle.net/10013/epic.48698 https://hdl.handle.net/10013/epic.48698.d001 unknown Nature https://epic.awi.de/id/eprint/41843/1/2016_Goncalves-Araujo_etal_SREP_FDOM_as_water_mass_tracer_Arctic.pdf https://hdl.handle.net/10013/epic.48698.d001 Goncalves-Araujo, R. , Granskog, M. A. , Bracher, A. orcid:0000-0003-3025-5517 , Azetsu-Scott, K. , Dodd, P. A. and Stedmon, C. A. (2016) Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters , Scientific Reports, 6 , p. 33978 . doi:10.1038/srep33978 <https://doi.org/10.1038/srep33978> , hdl:10013/epic.48698 EPIC3Scientific Reports, Nature, 6, pp. 33978, ISSN: 2045-2322 Article isiRev 2016 ftawi https://doi.org/10.1038/srep33978 2024-06-24T04:15:36Z Climate change affects the Arctic with regards to permafrost thaw, sea-ice melt, alterations to the freshwater budget and increased export of terrestrial material to the Arctic Ocean. The Fram and Davis Straits represent the major gateways connecting the Arctic and Atlantic. Oceanographic surveys were performed in the Fram and Davis Straits, and on the east Greenland Shelf (EGS), in late summer 2012/2013. Meteoric (fmw), sea-ice melt, Atlantic and Pacific water fractions were determined and the fluorescence properties of dissolved organic matter (FDOM) were characterized. In Fram Strait and EGS, a robust correlation between visible wavelength fluorescence and fmw was apparent, suggesting it as a reliable tracer of polar waters. However, a pattern was observed which linked the organic matter characteristics to the origin of polar waters. At depth in Davis Strait, visible wavelength FDOM was correlated to apparent oxygen utilization (AOU) and traced deep-water DOM turnover. In surface waters FDOM characteristics could distinguish between surface waters from eastern (Atlantic + modified polar waters) and western (Canada-basin polar waters) Arctic sectors. The findings highlight the potential of designing in situ multi-channel DOM fluorometers to trace the freshwater origins and decipher water mass mixing dynamics in the region without laborious samples analyses. Article in Journal/Newspaper Arctic Arctic Ocean canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice permafrost Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Scientific Reports 6 1 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
Climate change affects the Arctic with regards to permafrost thaw, sea-ice melt, alterations to the freshwater budget and increased export of terrestrial material to the Arctic Ocean. The Fram and Davis Straits represent the major gateways connecting the Arctic and Atlantic. Oceanographic surveys were performed in the Fram and Davis Straits, and on the east Greenland Shelf (EGS), in late summer 2012/2013. Meteoric (fmw), sea-ice melt, Atlantic and Pacific water fractions were determined and the fluorescence properties of dissolved organic matter (FDOM) were characterized. In Fram Strait and EGS, a robust correlation between visible wavelength fluorescence and fmw was apparent, suggesting it as a reliable tracer of polar waters. However, a pattern was observed which linked the organic matter characteristics to the origin of polar waters. At depth in Davis Strait, visible wavelength FDOM was correlated to apparent oxygen utilization (AOU) and traced deep-water DOM turnover. In surface waters FDOM characteristics could distinguish between surface waters from eastern (Atlantic + modified polar waters) and western (Canada-basin polar waters) Arctic sectors. The findings highlight the potential of designing in situ multi-channel DOM fluorometers to trace the freshwater origins and decipher water mass mixing dynamics in the region without laborious samples analyses. |
format |
Article in Journal/Newspaper |
author |
Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, Colin A. |
spellingShingle |
Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, Colin A. Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
author_facet |
Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, Colin A. |
author_sort |
Goncalves-Araujo, Rafael |
title |
Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
title_short |
Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
title_full |
Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
title_fullStr |
Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
title_full_unstemmed |
Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
title_sort |
using fluorescent dissolved organic matter to trace and distinguish the origin of arctic surface waters |
publisher |
Nature |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/41843/ https://epic.awi.de/id/eprint/41843/1/2016_Goncalves-Araujo_etal_SREP_FDOM_as_water_mass_tracer_Arctic.pdf http://www.nature.com/articles/srep33978 https://hdl.handle.net/10013/epic.48698 https://hdl.handle.net/10013/epic.48698.d001 |
genre |
Arctic Arctic Ocean canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice permafrost Sea ice |
genre_facet |
Arctic Arctic Ocean canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice permafrost Sea ice |
op_source |
EPIC3Scientific Reports, Nature, 6, pp. 33978, ISSN: 2045-2322 |
op_relation |
https://epic.awi.de/id/eprint/41843/1/2016_Goncalves-Araujo_etal_SREP_FDOM_as_water_mass_tracer_Arctic.pdf https://hdl.handle.net/10013/epic.48698.d001 Goncalves-Araujo, R. , Granskog, M. A. , Bracher, A. orcid:0000-0003-3025-5517 , Azetsu-Scott, K. , Dodd, P. A. and Stedmon, C. A. (2016) Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters , Scientific Reports, 6 , p. 33978 . doi:10.1038/srep33978 <https://doi.org/10.1038/srep33978> , hdl:10013/epic.48698 |
op_doi |
https://doi.org/10.1038/srep33978 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1810293327815245824 |