Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait
Current meters measured temperature and velocity on 12 moorings from 1997 to 2014 in the deep Fram Strait between Svalbard and Greenland at the only deep passage from the Nordic Seas to the Arctic Ocean. The sill depth in Fram Strait is 2545 m. The observed temperatures vary between the colder Green...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.845938 2023-05-15T14:59:06+02:00 Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait von Appen, Wilken-Jon Schauer, Ursula Somavilla Cabrillo, Raquel Bauerfeind, Eduard Beszczynska-Möller, Agnieszka MEDIAN LATITUDE: 77.313034 * MEDIAN LONGITUDE: -0.078932 * SOUTH-BOUND LATITUDE: 63.786500 * WEST-BOUND LONGITUDE: -35.272000 * NORTH-BOUND LATITUDE: 84.633000 * EAST-BOUND LONGITUDE: 31.999700 * DATE/TIME START: 1994-07-28T00:00:00 * DATE/TIME END: 2014-08-31T08:00:01 2015-05-04 application/zip, 3 datasets https://doi.pangaea.de/10.1594/PANGAEA.845938 https://doi.org/10.1594/PANGAEA.845938 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.845938 https://doi.org/10.1594/PANGAEA.845938 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: von Appen, Wilken-Jon; Schauer, Ursula; Somavilla, Raquel; Bauerfeind, Eduard; Beszczynska-Möller, Agnieszka (2015): Exchange of warming deep waters across Fram Strait. Deep Sea Research Part I: Oceanographic Research Papers, 103, 86-100, https://doi.org/10.1016/j.dsr.2015.06.003 AWI_PhyOce FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Physical Oceanography @ AWI Dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.845938 https://doi.org/10.1016/j.dsr.2015.06.003 2023-01-20T07:33:27Z Current meters measured temperature and velocity on 12 moorings from 1997 to 2014 in the deep Fram Strait between Svalbard and Greenland at the only deep passage from the Nordic Seas to the Arctic Ocean. The sill depth in Fram Strait is 2545 m. The observed temperatures vary between the colder Greenland Sea Deep Water and the warmer Eurasian Basin Deep Water. Both end members show a linear warming trend of 0.11±0.02°C/decade (GSDW) and 0.05±0.01°C/decade (EBDW) in agreement with the deep water warming observed in the basins to the north and south. At the current warming rates, GSDW and EBDW will reach the same temperature of -0.71°C in 2020. The deep water on the approximately 40 km wide plateau near the sill in Fram Strait is a mixture of the two end members with both contributing similar amounts. This water mass is continuously formed by mixing in Fram Strait and subsequently exported out of Fram Strait. Individual measurements are approximately normally distributed around the average of the two end members. Meridionally, the mixing is confined to the plateau region. Measurements less than 20 km to the north and south have properties much closer to the properties in the respective basins (Eurasian Basin and Greenland Sea) than to the mixed water on the plateau. The temperature distribution around Fram Strait indicates that the mean flow cannot be responsible for the deep water exchange across the sill. Rather, a coherence analysis shows that energetic mesoscale flows with periods of approximately 1-2 weeks advect the deep water masses across Fram Strait. These flows appear to be barotropically forced by upper ocean mesoscale variability. We conclude that these mesoscale flows make Fram Strait a hot spot of deep water mixing in the Arctic Mediterranean. The fate of the mixed water is not clear, but after the 1990s, it does not reflect the properties of Norwegian Sea Deep Water. We propose that it currently mostly fills the deep Greenland Sea. Dataset Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Norwegian Sea Svalbard PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Deep Passage ENVELOPE(-68.014,-68.014,63.467,63.467) Greenland Norwegian Sea Svalbard ENVELOPE(-35.272000,31.999700,84.633000,63.786500) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PhyOce FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Physical Oceanography @ AWI |
spellingShingle |
AWI_PhyOce FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Physical Oceanography @ AWI von Appen, Wilken-Jon Schauer, Ursula Somavilla Cabrillo, Raquel Bauerfeind, Eduard Beszczynska-Möller, Agnieszka Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
topic_facet |
AWI_PhyOce FRAM FRontiers in Arctic marine Monitoring Hausgarten Long-term Investigation at AWI-Hausgarten off Svalbard Physical Oceanography @ AWI |
description |
Current meters measured temperature and velocity on 12 moorings from 1997 to 2014 in the deep Fram Strait between Svalbard and Greenland at the only deep passage from the Nordic Seas to the Arctic Ocean. The sill depth in Fram Strait is 2545 m. The observed temperatures vary between the colder Greenland Sea Deep Water and the warmer Eurasian Basin Deep Water. Both end members show a linear warming trend of 0.11±0.02°C/decade (GSDW) and 0.05±0.01°C/decade (EBDW) in agreement with the deep water warming observed in the basins to the north and south. At the current warming rates, GSDW and EBDW will reach the same temperature of -0.71°C in 2020. The deep water on the approximately 40 km wide plateau near the sill in Fram Strait is a mixture of the two end members with both contributing similar amounts. This water mass is continuously formed by mixing in Fram Strait and subsequently exported out of Fram Strait. Individual measurements are approximately normally distributed around the average of the two end members. Meridionally, the mixing is confined to the plateau region. Measurements less than 20 km to the north and south have properties much closer to the properties in the respective basins (Eurasian Basin and Greenland Sea) than to the mixed water on the plateau. The temperature distribution around Fram Strait indicates that the mean flow cannot be responsible for the deep water exchange across the sill. Rather, a coherence analysis shows that energetic mesoscale flows with periods of approximately 1-2 weeks advect the deep water masses across Fram Strait. These flows appear to be barotropically forced by upper ocean mesoscale variability. We conclude that these mesoscale flows make Fram Strait a hot spot of deep water mixing in the Arctic Mediterranean. The fate of the mixed water is not clear, but after the 1990s, it does not reflect the properties of Norwegian Sea Deep Water. We propose that it currently mostly fills the deep Greenland Sea. |
format |
Dataset |
author |
von Appen, Wilken-Jon Schauer, Ursula Somavilla Cabrillo, Raquel Bauerfeind, Eduard Beszczynska-Möller, Agnieszka |
author_facet |
von Appen, Wilken-Jon Schauer, Ursula Somavilla Cabrillo, Raquel Bauerfeind, Eduard Beszczynska-Möller, Agnieszka |
author_sort |
von Appen, Wilken-Jon |
title |
Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
title_short |
Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
title_full |
Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
title_fullStr |
Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
title_full_unstemmed |
Physical oceanography and current meter data from mooring and CTD measurements at Fram Strait |
title_sort |
physical oceanography and current meter data from mooring and ctd measurements at fram strait |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.845938 https://doi.org/10.1594/PANGAEA.845938 |
op_coverage |
MEDIAN LATITUDE: 77.313034 * MEDIAN LONGITUDE: -0.078932 * SOUTH-BOUND LATITUDE: 63.786500 * WEST-BOUND LONGITUDE: -35.272000 * NORTH-BOUND LATITUDE: 84.633000 * EAST-BOUND LONGITUDE: 31.999700 * DATE/TIME START: 1994-07-28T00:00:00 * DATE/TIME END: 2014-08-31T08:00:01 |
long_lat |
ENVELOPE(-68.014,-68.014,63.467,63.467) ENVELOPE(-35.272000,31.999700,84.633000,63.786500) |
geographic |
Arctic Arctic Ocean Deep Passage Greenland Norwegian Sea Svalbard |
geographic_facet |
Arctic Arctic Ocean Deep Passage Greenland Norwegian Sea Svalbard |
genre |
Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Norwegian Sea Svalbard |
genre_facet |
Arctic Arctic Ocean Fram Strait Greenland Greenland Sea Nordic Seas Norwegian Sea Svalbard |
op_source |
Supplement to: von Appen, Wilken-Jon; Schauer, Ursula; Somavilla, Raquel; Bauerfeind, Eduard; Beszczynska-Möller, Agnieszka (2015): Exchange of warming deep waters across Fram Strait. Deep Sea Research Part I: Oceanographic Research Papers, 103, 86-100, https://doi.org/10.1016/j.dsr.2015.06.003 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.845938 https://doi.org/10.1594/PANGAEA.845938 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.845938 https://doi.org/10.1016/j.dsr.2015.06.003 |
_version_ |
1766331242041573376 |