USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER
Climate change affects the Arctic environment with regards to permafrost thaw, changes in the riverine runoff and subsequent export of fresh water and terrestrial material to the Arctic Ocean. In this context, the Fram Strait represents a major pathway for export to the Atlantic basin. We assess the...
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ftawi:oai:epic.awi.de:42352 2023-05-15T14:27:06+02:00 USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER Goncalves-Araujo, Rafael Granskog, M. A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, C. A. 2016-11 application/pdf https://epic.awi.de/id/eprint/42352/ https://epic.awi.de/id/eprint/42352/1/2016_11_FAMOS_Workshop_FDOM_Fram_Strait.pdf https://hdl.handle.net/10013/epic.49055 https://hdl.handle.net/10013/epic.49055.d001 unknown https://epic.awi.de/id/eprint/42352/1/2016_11_FAMOS_Workshop_FDOM_Fram_Strait.pdf https://hdl.handle.net/10013/epic.49055.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 ARCTIC SURFACE FRESH WATER , FAMOS Workshop, Woods Hole, MA, USA, November 2016 - unspecified . hdl:10013/epic.49055 EPIC3FAMOS Workshop, Woods Hole, MA, USA, 2016-11 Conference notRev 2016 ftawi 2021-12-24T15:42:08Z Climate change affects the Arctic environment with regards to permafrost thaw, changes in the riverine runoff and subsequent export of fresh water and terrestrial material to the Arctic Ocean. In this context, the Fram Strait represents a major pathway for export to the Atlantic basin. We assess the potential of visible wavelength dissolved organic matter fluorescence (VIS-FDOM) to trace the origin of Arctic outflow waters. Oceanographic surveys were performed in the Fram Strait, as well as on the east Greenland shelf (following the East Greenland Current), in late summer 2012 and 2013. Meteoric (fmw), sea-ice melt (fsim), Atlantic (faw) and Pacific (fpw) water fractions were determined and FDOM components were identified by PARAFAC modeling. In Fram Strait and east Greenland shelf, a robust correlation between VIS-FDOM and fmw was apparent, suggesting it as a reliable tracer of polar waters. However, variability was observed in the origin of polar waters, in relation to contribution of faw and fpw, between the sampled years. VIS-FDOM traced this variability, and distinguished between the origins of the halocline waters as originating in either the Eurasian or Canada basins. The findings presented highlight the potential of designing in situ DOM fluorometers to trace the freshwater origins and decipher water mass dynamics in the region. Conference Object Arctic Arctic Arctic Ocean Climate change East Greenland east greenland current Fram Strait Greenland Ice permafrost Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Canada Greenland Pacific |
institution |
Open Polar |
collection |
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 environment with regards to permafrost thaw, changes in the riverine runoff and subsequent export of fresh water and terrestrial material to the Arctic Ocean. In this context, the Fram Strait represents a major pathway for export to the Atlantic basin. We assess the potential of visible wavelength dissolved organic matter fluorescence (VIS-FDOM) to trace the origin of Arctic outflow waters. Oceanographic surveys were performed in the Fram Strait, as well as on the east Greenland shelf (following the East Greenland Current), in late summer 2012 and 2013. Meteoric (fmw), sea-ice melt (fsim), Atlantic (faw) and Pacific (fpw) water fractions were determined and FDOM components were identified by PARAFAC modeling. In Fram Strait and east Greenland shelf, a robust correlation between VIS-FDOM and fmw was apparent, suggesting it as a reliable tracer of polar waters. However, variability was observed in the origin of polar waters, in relation to contribution of faw and fpw, between the sampled years. VIS-FDOM traced this variability, and distinguished between the origins of the halocline waters as originating in either the Eurasian or Canada basins. The findings presented highlight the potential of designing in situ DOM fluorometers to trace the freshwater origins and decipher water mass dynamics in the region. |
format |
Conference Object |
author |
Goncalves-Araujo, Rafael Granskog, M. A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, C. A. |
spellingShingle |
Goncalves-Araujo, Rafael Granskog, M. A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, C. A. USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
author_facet |
Goncalves-Araujo, Rafael Granskog, M. A. Bracher, Astrid Azetsu-Scott, K. Dodd, Paul A. Stedmon, C. A. |
author_sort |
Goncalves-Araujo, Rafael |
title |
USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
title_short |
USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
title_full |
USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
title_fullStr |
USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
title_full_unstemmed |
USING FLUORESCENT DISSOLVED ORGANIC MATTER TO TRACE ARCTIC SURFACE FRESH WATER |
title_sort |
using fluorescent dissolved organic matter to trace arctic surface fresh water |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42352/ https://epic.awi.de/id/eprint/42352/1/2016_11_FAMOS_Workshop_FDOM_Fram_Strait.pdf https://hdl.handle.net/10013/epic.49055 https://hdl.handle.net/10013/epic.49055.d001 |
geographic |
Arctic Arctic Ocean Canada Greenland Pacific |
geographic_facet |
Arctic Arctic Ocean Canada Greenland Pacific |
genre |
Arctic Arctic Arctic Ocean Climate change East Greenland east greenland current Fram Strait Greenland Ice permafrost Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Climate change East Greenland east greenland current Fram Strait Greenland Ice permafrost Sea ice |
op_source |
EPIC3FAMOS Workshop, Woods Hole, MA, USA, 2016-11 |
op_relation |
https://epic.awi.de/id/eprint/42352/1/2016_11_FAMOS_Workshop_FDOM_Fram_Strait.pdf https://hdl.handle.net/10013/epic.49055.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 ARCTIC SURFACE FRESH WATER , FAMOS Workshop, Woods Hole, MA, USA, November 2016 - unspecified . hdl:10013/epic.49055 |
_version_ |
1766300684187074560 |