Combining in situ measurements and altimetry to estimate volume
From 1994 to 2011, instruments measuring ocean currents (Acoustic Doppler Current Profilers; ADCPs) have been moored on a section crossing the Faroe–Shetland Channel. Together with CTD (Conductivity Temperature Depth) measurements from regular research vessel occupations, they describe the flow fiel...
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Online Access: | https://zenodo.org/record/7023 https://doi.org/10.5194/os-9-639-2013 |
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ftzenodo:oai:openaire.cern.ch:11049 2023-06-06T11:51:14+02:00 Combining in situ measurements and altimetry to estimate volume Berx, Barbara Hansen, Bogi Østerhus, Svein Larsen, Karin Margretha Sherwin, Toby Jochumsen, Kerstin 2013-01-17 https://zenodo.org/record/7023 https://doi.org/10.5194/os-9-639-2013 eng eng info:eu-repo/grantAgreement/EC/FP7/308299/ https://zenodo.org/communities/ecfunded https://zenodo.org/communities/zenodo https://zenodo.org/record/7023 https://doi.org/10.5194/os-9-639-2013 oai:openaire.cern.ch:11049 info:eu-repo/semantics/openAccess Ocean Science 9(9) 639–654 (2013) info:eu-repo/semantics/article publication-article 2013 ftzenodo https://doi.org/10.5194/os-9-639-2013 2023-04-13T22:55:36Z From 1994 to 2011, instruments measuring ocean currents (Acoustic Doppler Current Profilers; ADCPs) have been moored on a section crossing the Faroe–Shetland Channel. Together with CTD (Conductivity Temperature Depth) measurements from regular research vessel occupations, they describe the flow field and water mass structure in the channel. Here, we use these data to calculate the average volume transport and properties of the flow of warm water through the channel from the Atlantic towards the Arctic, termed the Atlantic inflow. We find the average volume transport of this flow to be 2.7 ± 0.5 Sv (1 Sv = 106 m3 s–1) between the shelf edge on the Faroe side and the 150 m isobath on the Shetland side. The average heat transport (relative to 0 °C) was estimated to be 107 ± 21 TW (1 TW = 1012 W) and the average salt import to be 98 ± 20 × 106 kg s−1. Transport values for individual months, based on the ADCP data, include a large level of variability, but can be used to calibrate sea level height data from satellite altimetry. In this way, a time series of volume transport has been generated back to the beginning of satellite altimetry in December 1992. The Atlantic inflow has a seasonal variation in volume transport that peaks around the turn of the year and has an amplitude of 0.7 Sv. The Atlantic inflow has become warmer and more saline since 1994, but no equivalent trend in volume transport was observed. Article in Journal/Newspaper Arctic Zenodo Arctic Ocean Science 9 4 639 654 |
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English |
description |
From 1994 to 2011, instruments measuring ocean currents (Acoustic Doppler Current Profilers; ADCPs) have been moored on a section crossing the Faroe–Shetland Channel. Together with CTD (Conductivity Temperature Depth) measurements from regular research vessel occupations, they describe the flow field and water mass structure in the channel. Here, we use these data to calculate the average volume transport and properties of the flow of warm water through the channel from the Atlantic towards the Arctic, termed the Atlantic inflow. We find the average volume transport of this flow to be 2.7 ± 0.5 Sv (1 Sv = 106 m3 s–1) between the shelf edge on the Faroe side and the 150 m isobath on the Shetland side. The average heat transport (relative to 0 °C) was estimated to be 107 ± 21 TW (1 TW = 1012 W) and the average salt import to be 98 ± 20 × 106 kg s−1. Transport values for individual months, based on the ADCP data, include a large level of variability, but can be used to calibrate sea level height data from satellite altimetry. In this way, a time series of volume transport has been generated back to the beginning of satellite altimetry in December 1992. The Atlantic inflow has a seasonal variation in volume transport that peaks around the turn of the year and has an amplitude of 0.7 Sv. The Atlantic inflow has become warmer and more saline since 1994, but no equivalent trend in volume transport was observed. |
format |
Article in Journal/Newspaper |
author |
Berx, Barbara Hansen, Bogi Østerhus, Svein Larsen, Karin Margretha Sherwin, Toby Jochumsen, Kerstin |
spellingShingle |
Berx, Barbara Hansen, Bogi Østerhus, Svein Larsen, Karin Margretha Sherwin, Toby Jochumsen, Kerstin Combining in situ measurements and altimetry to estimate volume |
author_facet |
Berx, Barbara Hansen, Bogi Østerhus, Svein Larsen, Karin Margretha Sherwin, Toby Jochumsen, Kerstin |
author_sort |
Berx, Barbara |
title |
Combining in situ measurements and altimetry to estimate volume |
title_short |
Combining in situ measurements and altimetry to estimate volume |
title_full |
Combining in situ measurements and altimetry to estimate volume |
title_fullStr |
Combining in situ measurements and altimetry to estimate volume |
title_full_unstemmed |
Combining in situ measurements and altimetry to estimate volume |
title_sort |
combining in situ measurements and altimetry to estimate volume |
publishDate |
2013 |
url |
https://zenodo.org/record/7023 https://doi.org/10.5194/os-9-639-2013 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Ocean Science 9(9) 639–654 (2013) |
op_relation |
info:eu-repo/grantAgreement/EC/FP7/308299/ https://zenodo.org/communities/ecfunded https://zenodo.org/communities/zenodo https://zenodo.org/record/7023 https://doi.org/10.5194/os-9-639-2013 oai:openaire.cern.ch:11049 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/os-9-639-2013 |
container_title |
Ocean Science |
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9 |
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4 |
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639 |
op_container_end_page |
654 |
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1767956950078717952 |