MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations
The Southern Ocean plays a fundamental role in regulating the global climate. This ocean also contains a rich and highly productive ecosystem, potentially vulnerable to climate change. Very large national and international efforts are directed towards the modeling of physical oceanographic processes...
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2024
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Online Access: | https://doi.org/10.17882/45461 https://www.seanoe.org/data/00343/45461/ |
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ftseanoe:oai:seanoe.org:45461 2024-05-12T08:03:12+00:00 MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations Roquet, Fabien Guinet, Christophe Charrassin, Jean-benoit Costa, Daniel P. Kovacs, Kit M Lydersen, Christian Bornemann, Horst Bester, Marthan N. Muelbert, Monica C. Hindell, Mark A. Mcmahon, Clive R. Harcourt, Rob Boehme, Lars Fedak, Mike A. Doriot, Vincent Picard, Baptiste North 90.0, South -90.0, East 180.0, West -180.0 2024-02 https://doi.org/10.17882/45461 https://www.seanoe.org/data/00343/45461/ unknown SEANOE doi:10.17882/45461 https://doi.org/10.17882/45461 https://www.seanoe.org/data/00343/45461/ CC-BY Marine biology physical oceanography in-situ marine data sea-mammals CTD sensors operational oceanography Installations de suivi environnemental dataset 2024 ftseanoe https://doi.org/10.17882/45461 2024-04-18T00:03:32Z The Southern Ocean plays a fundamental role in regulating the global climate. This ocean also contains a rich and highly productive ecosystem, potentially vulnerable to climate change. Very large national and international efforts are directed towards the modeling of physical oceanographic processes to predict the response of the Southern Ocean to global climate change and the role played by the large-scale ocean climate processes. However, these modeling efforts are greatly limited by the lack of in situ measurements, especially at high latitudes and during winter months. The standard data that are needed to study ocean circulation are vertical profiles of temperature and salinity, from which we can deduce the density of seawater. These are collected with CTD (Conductivity-Temperature-Depth) sensors that are usually deployed on research vessels or, more recently, on autonomous Argo profilers. The use of conventional research vessels to collect these data is very expensive, and does not guarantee access to areas where sea ice is found at the surface of the ocean during the winter months. A recent alternative is the use of autonomous Argo floats. However, this technology is not easy to use in glaciated areas. In this context, the collection of hydrographic profiles from CTDs mounted on marine mammals is very advantageous. The choice of species, gender or age can be done to selectively obtain data in particularly under-sampled areas such as under the sea ice or on continental shelves. Among marine mammals, elephant seals are particularly interesting. Indeed, they have the particularity to continuously dive to great depths (590 ± 200 m, with maxima around 2000 m) for long durations (average length of a dive 25 ± 15 min, maximum 80 min). A Conductivity-Temperature-Depth Satellite Relay Data Logger (CTD-SRDLs) has been developed in the early 2000s to sample temperature and salinity vertical profiles during marine mammal dives (Boehme et al. 2009, Fedak 2013). The CTD-SRDL is attached to the seal on land, then it ... Dataset Elephant Seals Sea ice Southern Ocean SEANOE (Sea scientific open data publication) Southern Ocean |
institution |
Open Polar |
collection |
SEANOE (Sea scientific open data publication) |
op_collection_id |
ftseanoe |
language |
unknown |
topic |
Marine biology physical oceanography in-situ marine data sea-mammals CTD sensors operational oceanography Installations de suivi environnemental |
spellingShingle |
Marine biology physical oceanography in-situ marine data sea-mammals CTD sensors operational oceanography Installations de suivi environnemental Roquet, Fabien Guinet, Christophe Charrassin, Jean-benoit Costa, Daniel P. Kovacs, Kit M Lydersen, Christian Bornemann, Horst Bester, Marthan N. Muelbert, Monica C. Hindell, Mark A. Mcmahon, Clive R. Harcourt, Rob Boehme, Lars Fedak, Mike A. Doriot, Vincent Picard, Baptiste MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
topic_facet |
Marine biology physical oceanography in-situ marine data sea-mammals CTD sensors operational oceanography Installations de suivi environnemental |
description |
The Southern Ocean plays a fundamental role in regulating the global climate. This ocean also contains a rich and highly productive ecosystem, potentially vulnerable to climate change. Very large national and international efforts are directed towards the modeling of physical oceanographic processes to predict the response of the Southern Ocean to global climate change and the role played by the large-scale ocean climate processes. However, these modeling efforts are greatly limited by the lack of in situ measurements, especially at high latitudes and during winter months. The standard data that are needed to study ocean circulation are vertical profiles of temperature and salinity, from which we can deduce the density of seawater. These are collected with CTD (Conductivity-Temperature-Depth) sensors that are usually deployed on research vessels or, more recently, on autonomous Argo profilers. The use of conventional research vessels to collect these data is very expensive, and does not guarantee access to areas where sea ice is found at the surface of the ocean during the winter months. A recent alternative is the use of autonomous Argo floats. However, this technology is not easy to use in glaciated areas. In this context, the collection of hydrographic profiles from CTDs mounted on marine mammals is very advantageous. The choice of species, gender or age can be done to selectively obtain data in particularly under-sampled areas such as under the sea ice or on continental shelves. Among marine mammals, elephant seals are particularly interesting. Indeed, they have the particularity to continuously dive to great depths (590 ± 200 m, with maxima around 2000 m) for long durations (average length of a dive 25 ± 15 min, maximum 80 min). A Conductivity-Temperature-Depth Satellite Relay Data Logger (CTD-SRDLs) has been developed in the early 2000s to sample temperature and salinity vertical profiles during marine mammal dives (Boehme et al. 2009, Fedak 2013). The CTD-SRDL is attached to the seal on land, then it ... |
format |
Dataset |
author |
Roquet, Fabien Guinet, Christophe Charrassin, Jean-benoit Costa, Daniel P. Kovacs, Kit M Lydersen, Christian Bornemann, Horst Bester, Marthan N. Muelbert, Monica C. Hindell, Mark A. Mcmahon, Clive R. Harcourt, Rob Boehme, Lars Fedak, Mike A. Doriot, Vincent Picard, Baptiste |
author_facet |
Roquet, Fabien Guinet, Christophe Charrassin, Jean-benoit Costa, Daniel P. Kovacs, Kit M Lydersen, Christian Bornemann, Horst Bester, Marthan N. Muelbert, Monica C. Hindell, Mark A. Mcmahon, Clive R. Harcourt, Rob Boehme, Lars Fedak, Mike A. Doriot, Vincent Picard, Baptiste |
author_sort |
Roquet, Fabien |
title |
MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
title_short |
MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
title_full |
MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
title_fullStr |
MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
title_full_unstemmed |
MEOP-CTD in-situ data collection: a Southern ocean Marine-mammals calibrated sea water temperatures and salinities observations |
title_sort |
meop-ctd in-situ data collection: a southern ocean marine-mammals calibrated sea water temperatures and salinities observations |
publisher |
SEANOE |
publishDate |
2024 |
url |
https://doi.org/10.17882/45461 https://www.seanoe.org/data/00343/45461/ |
op_coverage |
North 90.0, South -90.0, East 180.0, West -180.0 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Elephant Seals Sea ice Southern Ocean |
genre_facet |
Elephant Seals Sea ice Southern Ocean |
op_relation |
doi:10.17882/45461 https://doi.org/10.17882/45461 https://www.seanoe.org/data/00343/45461/ |
op_rights |
CC-BY |
op_doi |
https://doi.org/10.17882/45461 |
_version_ |
1798845312832372736 |