Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015
During the recent decade the Arctic Ocean has shown several years of very low sea-ice extent and an increase in liquid freshwater. Yet, the processes underlying the interannual variability are still not fully understood. Hydrographic observations by ship campaigns and autonomous platforms reveal tha...
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EGU, Geophysical Research Abstracts Vol. 18, EGU2016-12513
2016
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ftawi:oai:epic.awi.de:42035 2023-05-15T14:27:32+02:00 Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 Rabe, Benjamin Korhonen, Meri Hoppmann, Mario Ricker, Robert Hendricks, Stefan Krumpen, Thomas Beckers, Justin Schauer, Ursula 2016 https://epic.awi.de/id/eprint/42035/ http://www.geophysical-research-abstracts.net/egu2016.html https://hdl.handle.net/10013/epic.48834 unknown EGU, Geophysical Research Abstracts Vol. 18, EGU2016-12513 Rabe, B. orcid:0000-0001-5794-9856 , Korhonen, M. , Hoppmann, M. orcid:0000-0003-1294-9531 , Ricker, R. orcid:0000-0001-6928-7757 , Hendricks, S. orcid:0000-0002-1412-3146 , Krumpen, T. orcid:0000-0001-6234-8756 , Beckers, J. and Schauer, U. (2016) Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 , EGU General Assembly 2016, Vienna, Austria, 2016 - unspecified . hdl:10013/epic.48834 EPIC3EGU General Assembly 2016, Vienna, Austria, 2016EGU, Geophysical Research Abstracts Vol. 18, EGU2016-12513 Conference notRev 2016 ftawi 2021-12-24T15:42:00Z During the recent decade the Arctic Ocean has shown several years of very low sea-ice extent and an increase in liquid freshwater. Yet, the processes underlying the interannual variability are still not fully understood. Hydrographic observations by ship campaigns and autonomous platforms reveal that summer 2015 showed above average liquid freshwater in the upper ocean of the central Arctic. Surface temperatures and sea level pressure were also higher than the average of the preceeding two decades. From hydrographic observations and atmospheric reanalysis data we show that this liquid freshwater anomaly is associated with above average sea-ice melt and intensified northward Ekman transport. We, further, found significant amounts of Pacific Water in the upper water column, from the mixed-layer to the upper halocline. Our results suggest that the freshening was due to both advection of low-salinity water from the direction of the Siberian shelves, the Beaufort Gyre and the Bering Strait, and enhance sea-ice melt. Conference Object Arctic Arctic Arctic Ocean Bering Strait Sea ice Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Arctic Ocean Bering Strait Pacific |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
During the recent decade the Arctic Ocean has shown several years of very low sea-ice extent and an increase in liquid freshwater. Yet, the processes underlying the interannual variability are still not fully understood. Hydrographic observations by ship campaigns and autonomous platforms reveal that summer 2015 showed above average liquid freshwater in the upper ocean of the central Arctic. Surface temperatures and sea level pressure were also higher than the average of the preceeding two decades. From hydrographic observations and atmospheric reanalysis data we show that this liquid freshwater anomaly is associated with above average sea-ice melt and intensified northward Ekman transport. We, further, found significant amounts of Pacific Water in the upper water column, from the mixed-layer to the upper halocline. Our results suggest that the freshening was due to both advection of low-salinity water from the direction of the Siberian shelves, the Beaufort Gyre and the Bering Strait, and enhance sea-ice melt. |
format |
Conference Object |
author |
Rabe, Benjamin Korhonen, Meri Hoppmann, Mario Ricker, Robert Hendricks, Stefan Krumpen, Thomas Beckers, Justin Schauer, Ursula |
spellingShingle |
Rabe, Benjamin Korhonen, Meri Hoppmann, Mario Ricker, Robert Hendricks, Stefan Krumpen, Thomas Beckers, Justin Schauer, Ursula Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
author_facet |
Rabe, Benjamin Korhonen, Meri Hoppmann, Mario Ricker, Robert Hendricks, Stefan Krumpen, Thomas Beckers, Justin Schauer, Ursula |
author_sort |
Rabe, Benjamin |
title |
Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
title_short |
Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
title_full |
Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
title_fullStr |
Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
title_full_unstemmed |
Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 |
title_sort |
central arctic ocean freshwater during a period of anomalous melt and advection in 2015 |
publisher |
EGU, Geophysical Research Abstracts Vol. 18, EGU2016-12513 |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/42035/ http://www.geophysical-research-abstracts.net/egu2016.html https://hdl.handle.net/10013/epic.48834 |
geographic |
Arctic Arctic Ocean Bering Strait Pacific |
geographic_facet |
Arctic Arctic Ocean Bering Strait Pacific |
genre |
Arctic Arctic Arctic Ocean Bering Strait Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Bering Strait Sea ice |
op_source |
EPIC3EGU General Assembly 2016, Vienna, Austria, 2016EGU, Geophysical Research Abstracts Vol. 18, EGU2016-12513 |
op_relation |
Rabe, B. orcid:0000-0001-5794-9856 , Korhonen, M. , Hoppmann, M. orcid:0000-0003-1294-9531 , Ricker, R. orcid:0000-0001-6928-7757 , Hendricks, S. orcid:0000-0002-1412-3146 , Krumpen, T. orcid:0000-0001-6234-8756 , Beckers, J. and Schauer, U. (2016) Central Arctic Ocean freshwater during a period of anomalous melt and advection in 2015 , EGU General Assembly 2016, Vienna, Austria, 2016 - unspecified . hdl:10013/epic.48834 |
_version_ |
1766301302296412160 |