Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel
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...
Published in: | Ocean Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2013
|
Subjects: | |
Online Access: | https://doi.org/10.5194/os-9-639-2013 http://www.ocean-sci.net/9/639/2013/os-9-639-2013.pdf https://doaj.org/article/d6642eadecae47c78d2282b1f44974aa |
id |
fttriple:oai:gotriple.eu:oai:doaj.org/article:d6642eadecae47c78d2282b1f44974aa |
---|---|
record_format |
openpolar |
spelling |
fttriple:oai:gotriple.eu:oai:doaj.org/article:d6642eadecae47c78d2282b1f44974aa 2023-05-15T15:10:46+02:00 Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel B. Berx B. Hansen S. Østerhus K. M. Larsen T. Sherwin K. Jochumsen 2013-07-01 https://doi.org/10.5194/os-9-639-2013 http://www.ocean-sci.net/9/639/2013/os-9-639-2013.pdf https://doaj.org/article/d6642eadecae47c78d2282b1f44974aa en eng Copernicus Publications doi:10.5194/os-9-639-2013 1812-0784 1812-0792 http://www.ocean-sci.net/9/639/2013/os-9-639-2013.pdf https://doaj.org/article/d6642eadecae47c78d2282b1f44974aa undefined Ocean Science, Vol 9, Iss 4, Pp 639-654 (2013) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.5194/os-9-639-2013 2023-01-22T19:26:07Z 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 Unknown Arctic Ocean Science 9 4 639 654 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
geo envir |
spellingShingle |
geo envir B. Berx B. Hansen S. Østerhus K. M. Larsen T. Sherwin K. Jochumsen Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
topic_facet |
geo envir |
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 |
B. Berx B. Hansen S. Østerhus K. M. Larsen T. Sherwin K. Jochumsen |
author_facet |
B. Berx B. Hansen S. Østerhus K. M. Larsen T. Sherwin K. Jochumsen |
author_sort |
B. Berx |
title |
Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
title_short |
Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
title_full |
Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
title_fullStr |
Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
title_full_unstemmed |
Combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the Faroe–Shetland Channel |
title_sort |
combining in situ measurements and altimetry to estimate volume, heat and salt transport variability through the faroe–shetland channel |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/os-9-639-2013 http://www.ocean-sci.net/9/639/2013/os-9-639-2013.pdf https://doaj.org/article/d6642eadecae47c78d2282b1f44974aa |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Ocean Science, Vol 9, Iss 4, Pp 639-654 (2013) |
op_relation |
doi:10.5194/os-9-639-2013 1812-0784 1812-0792 http://www.ocean-sci.net/9/639/2013/os-9-639-2013.pdf https://doaj.org/article/d6642eadecae47c78d2282b1f44974aa |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/os-9-639-2013 |
container_title |
Ocean Science |
container_volume |
9 |
container_issue |
4 |
container_start_page |
639 |
op_container_end_page |
654 |
_version_ |
1766341724874997760 |