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...
Published in: | Scientific Reports |
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2016
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Online Access: | https://orbit.dtu.dk/en/publications/58d1df30-12f6-4162-8ddc-48433baa06a7 https://doi.org/10.1038/srep33978 https://backend.orbit.dtu.dk/ws/files/126306933/Publishers_version.pdf |
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ftdtupubl:oai:pure.atira.dk:publications/58d1df30-12f6-4162-8ddc-48433baa06a7 2024-09-15T17:50:52+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, Kumiko Dodd, Paul A. Stedmon, Colin A. 2016 application/pdf https://orbit.dtu.dk/en/publications/58d1df30-12f6-4162-8ddc-48433baa06a7 https://doi.org/10.1038/srep33978 https://backend.orbit.dtu.dk/ws/files/126306933/Publishers_version.pdf eng eng https://orbit.dtu.dk/en/publications/58d1df30-12f6-4162-8ddc-48433baa06a7 info:eu-repo/semantics/openAccess Goncalves-Araujo , R , Granskog , M A , Bracher , A , Azetsu-Scott , K , Dodd , P A & Stedmon , C A 2016 , ' Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters ' , Scientific Reports , vol. 6 , pp. 1-12 . https://doi.org/10.1038/srep33978 MULTIDISCIPLINARY SEA-ICE MELT FRESH-WATER FRAM STRAIT NORTH-ATLANTIC BAFFIN-BAY OPTICAL-PROPERTIES DAVIS STRAIT OCEAN MARINE CARBON /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water article 2016 ftdtupubl https://doi.org/10.1038/srep33978 2024-08-13T00:03:05Z 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 (f(mw)), 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 f(mw) 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 Baffin Bay Baffin Bay Baffin canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice North Atlantic permafrost Sea ice Technical University of Denmark: DTU Orbit Scientific Reports 6 1 |
institution |
Open Polar |
collection |
Technical University of Denmark: DTU Orbit |
op_collection_id |
ftdtupubl |
language |
English |
topic |
MULTIDISCIPLINARY SEA-ICE MELT FRESH-WATER FRAM STRAIT NORTH-ATLANTIC BAFFIN-BAY OPTICAL-PROPERTIES DAVIS STRAIT OCEAN MARINE CARBON /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
spellingShingle |
MULTIDISCIPLINARY SEA-ICE MELT FRESH-WATER FRAM STRAIT NORTH-ATLANTIC BAFFIN-BAY OPTICAL-PROPERTIES DAVIS STRAIT OCEAN MARINE CARBON /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, Kumiko Dodd, Paul A. Stedmon, Colin A. Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters |
topic_facet |
MULTIDISCIPLINARY SEA-ICE MELT FRESH-WATER FRAM STRAIT NORTH-ATLANTIC BAFFIN-BAY OPTICAL-PROPERTIES DAVIS STRAIT OCEAN MARINE CARBON /dk/atira/pure/sustainabledevelopmentgoals/climate_action name=SDG 13 - Climate Action /dk/atira/pure/sustainabledevelopmentgoals/life_below_water name=SDG 14 - Life Below Water |
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 (f(mw)), 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 f(mw) 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, Kumiko Dodd, Paul A. Stedmon, Colin A. |
author_facet |
Goncalves-Araujo, Rafael Granskog, Mats A. Bracher, Astrid Azetsu-Scott, Kumiko 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 |
publishDate |
2016 |
url |
https://orbit.dtu.dk/en/publications/58d1df30-12f6-4162-8ddc-48433baa06a7 https://doi.org/10.1038/srep33978 https://backend.orbit.dtu.dk/ws/files/126306933/Publishers_version.pdf |
genre |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice North Atlantic permafrost Sea ice |
genre_facet |
Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin canada basin Climate change Davis Strait East Greenland Fram Strait Greenland Ice North Atlantic permafrost Sea ice |
op_source |
Goncalves-Araujo , R , Granskog , M A , Bracher , A , Azetsu-Scott , K , Dodd , P A & Stedmon , C A 2016 , ' Using fluorescent dissolved organic matter to trace and distinguish the origin of Arctic surface waters ' , Scientific Reports , vol. 6 , pp. 1-12 . https://doi.org/10.1038/srep33978 |
op_relation |
https://orbit.dtu.dk/en/publications/58d1df30-12f6-4162-8ddc-48433baa06a7 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/srep33978 |
container_title |
Scientific Reports |
container_volume |
6 |
container_issue |
1 |
_version_ |
1810292673714585600 |