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Metadata: Underway and CTD data collected as part of “Gliders: Excellent New Tools for Observing the Ocean (GENTOO)”, Southern Ocean, January to March 2012
Abstract:
This dataset consists of measurements of temperature, pressure and depth collected using conductivity-temperature-depth (CTD) casts, chlorophyll, water chemistry and biogenic silica data taken from CTD and underway samples, and underway meteorology, navigation and sea surface hydrography. Data were collected in the Southern Ocean, specifically the Drake Passage, Weddell Sea and Powell Basin, on the RRS James Clark Ross cruises JR255A (20 January to 03 February 2012) and recovery cruise JR255B (04 February to 22 March 2012). Biogenic silica and chlorophyll samples were collected from the non-toxic underway and CTD Niskin bottles, filtered, dried and processed spectrophotometrically post-cruise. Similarly, water chemistry samples were collected, filtered and dried before post-cruise processing with an elemental analyser. A SeaBird CTD rosette was launched at stations throughout the cruise collecting temperature, pressure and depth values with an attached deep ocean thermometer collecting temperature data, which were used to calibrate the CTD data. The underway oceanlogger was running through the duration of the cruises, excepting times for cleaning, entering and leaving port, and while alongside. The data were collected as part of the "Gliders: Excellent New Tools for Observing the Ocean (GENTOO)" project. The objectives of GENTOO are: (i) To quantify and understand the possible new source of dense water overflow and its variability; to determine the outflow's potential as an early indicator of Antarctic climate change; to assess the impact of changing dense overflows on the locations and strengths of the surface currents and frontal jets; to provide valuable constraints for climate models that describe how changes in ocean circulation feedback on and regulate climate change in polar latitudes. (ii) To determine the krill biomass distribution and (temporal and spatial) variability to the east of the Antarctic Peninsula and its likely impact on the circumpolar krill ecosystem; to assess the impact of any variations in the location of the frontal jets (from objective i) on the krill biomass distribution; to alleviate a severe regional lack of field data on krill, a key species in the Antarctic food web. To achieve the two objectives, our technological deliverable is a critical evaluation of our ability to measure (a) current velocity from a glider and (b) krill biomass from a glider. The data were collected under NERC lead grant NE/H01439X/1, with child grants NE/H014217/1, NE/H014756/1 and NE/H015078/1. The principal investigators were Prof. Karen Heywood, University of East Anglia, Environmental Sciences; Prof. Gwyn Griffiths, National Oceanography Centre, Science and Technology; Dr. Sophie Fielding, NERC British Antarctic Survey, Science Programmes; Dr. Stuart Bruce Dalziel, University of Cambridge, Applied Maths and Theoretical Physics. With regard the samples data (biogenic silica, water chemistry and chlorophyll) it is important to note that these data ARE NOT the property of NERC. They belong to Walker Smith of the Virginia Institute of Marine Science (VIMS), who has supplied them in support of GENTOO. As such, he must be credited for use of the data. The CTD and underway navigation, meteorology and sea surface hydrography data have been received by BODC as raw files from the RRS James Clark Ross, are currently being processed and are available in raw format from BODC enquiries. The SBE-35 Deep Ocean Thermometer and biogenic silica, chlorophyll-a and particulate organic carbon/nitrogen samples data have been received by BODC as raw files from the RRS James Clark Ross, processed and quality controlled using in-house BODC procedures and will be made available online in the near future.
Data holder:
British Oceanographic Data Centre
| Other details | ||
| Internal code | Internally assigned metadata identifier | 7875 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Underway and CTD data collected as part of “Gliders: Excellent New Tools for Observing the Ocean (GENTOO)”, Southern Ocean, January to March 2012 |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | British Oceanographic Data Centre record 1048GENTOO_project_data |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 69915b4d545d5a4dbf65e1228529e70a |
| Resource Identifier | This is the code assigned by the data owner. | EDMED6714 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2012-01-20 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-03-22 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | asNeeded |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This dataset consists of measurements of temperature, pressure and depth collected using conductivity-temperature-depth (CTD) casts, chlorophyll, water chemistry and biogenic silica data taken from CTD and underway samples, and underway meteorology, navigation and sea surface hydrography. Data were collected in the Southern Ocean, specifically the Drake Passage, Weddell Sea and Powell Basin, on the RRS James Clark Ross cruises JR255A (20 January to 03 February 2012) and recovery cruise JR255B (04 February to 22 March 2012). Biogenic silica and chlorophyll samples were collected from the non-toxic underway and CTD Niskin bottles, filtered, dried and processed spectrophotometrically post-cruise. Similarly, water chemistry samples were collected, filtered and dried before post-cruise processing with an elemental analyser. A SeaBird CTD rosette was launched at stations throughout the cruise collecting temperature, pressure and depth values with an attached deep ocean thermometer collecting temperature data, which were used to calibrate the CTD data. The underway oceanlogger was running through the duration of the cruises, excepting times for cleaning, entering and leaving port, and while alongside. The data were collected as part of the "Gliders: Excellent New Tools for Observing the Ocean (GENTOO)" project. The objectives of GENTOO are: (i) To quantify and understand the possible new source of dense water overflow and its variability; to determine the outflow's potential as an early indicator of Antarctic climate change; to assess the impact of changing dense overflows on the locations and strengths of the surface currents and frontal jets; to provide valuable constraints for climate models that describe how changes in ocean circulation feedback on and regulate climate change in polar latitudes. (ii) To determine the krill biomass distribution and (temporal and spatial) variability to the east of the Antarctic Peninsula and its likely impact on the circumpolar krill ecosystem; to assess the impact of any variations in the location of the frontal jets (from objective i) on the krill biomass distribution; to alleviate a severe regional lack of field data on krill, a key species in the Antarctic food web. To achieve the two objectives, our technological deliverable is a critical evaluation of our ability to measure (a) current velocity from a glider and (b) krill biomass from a glider. The data were collected under NERC lead grant NE/H01439X/1, with child grants NE/H014217/1, NE/H014756/1 and NE/H015078/1. The principal investigators were Prof. Karen Heywood, University of East Anglia, Environmental Sciences; Prof. Gwyn Griffiths, National Oceanography Centre, Science and Technology; Dr. Sophie Fielding, NERC British Antarctic Survey, Science Programmes; Dr. Stuart Bruce Dalziel, University of Cambridge, Applied Maths and Theoretical Physics. With regard the samples data (biogenic silica, water chemistry and chlorophyll) it is important to note that these data ARE NOT the property of NERC. They belong to Walker Smith of the Virginia Institute of Marine Science (VIMS), who has supplied them in support of GENTOO. As such, he must be credited for use of the data. The CTD and underway navigation, meteorology and sea surface hydrography data have been received by BODC as raw files from the RRS James Clark Ross, are currently being processed and are available in raw format from BODC enquiries. The SBE-35 Deep Ocean Thermometer and biogenic silica, chlorophyll-a and particulate organic carbon/nitrogen samples data have been received by BODC as raw files from the RRS James Clark Ross, processed and quality controlled using in-house BODC procedures and will be made available online in the near future. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This dataset was created by the organisations with the "originator" role in this metadata record and provided to the British Oceanographic Data Centre for long term archive and management.Instrument(s) used to collect data: anemometers; fluorometers; thermosalinographs; multi-beam echosounders; salinity sensor; elemental analysers; spectrophotometers; Differential Global Positioning System receivers; transmissometers; water temperature sensor; meteorological packages. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | Publication year: 2015-04-08 Publication title: Weddell Sea Export Pathways from Surface Drifters Publication authors: Youngs M Publication year: 2015-01-27 Publication title: Ocean glider observations of iceberg-enhanced biological production in the northwestern Weddell Sea Publication authors: Biddle. L. Publication year: 2011-12-19 Publication title: Using gliders to study a phytoplankton bloom in the Ross Sea, antarctica Publication authors: Asper V. Publication year: 2014-06-10 Publication title: An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill (Euphausia superba) in the Weddell Sea. Publication authors: Guihen D Publication year: 2014-06-02 Publication title: Ocean processes at the Antarctic continental slope. Publication authors: Heywood K Publication year: 2014-06-11 Publication title: Biogeochemical variability in the southern Ross Sea as observed by a glider deployment Publication authors: Kaufman D Publication year: 2016-07-05 Publication title: Potential for an underwater glider component as part of the Global Ocean Observing System Publication authors: Liblik T Publication year: 2015-02-20 Publication title: Dissolved oxygen dynamics during a phytoplankton bloom in the Ross Sea polynya Publication authors: Queste B Publication year: 2014-12-05 Publication title: Multidecadal warming of Antarctic waters. Publication authors: Schmidtko S Publication year: 2014-06-01 Publication title: Multiplatform, Multidisciplinary Investigations of the Impacts of Modified Circumpolar Deep Water in the Ross Sea, Antarctica Publication authors: Smith W Publication year: 2014-11-10 Publication title: Eddy transport as a key component of the Antarctic overturning circulation Publication authors: Thompson AF Publication year: 2012-07-01 Publication title: IRobot seaglider with ogive fairings supports antarctic research Publication authors: Yahnker C |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic backscatter in the water column |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Visible waveband radiance and irradiance measurements in the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Air temperature | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Temperature of the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Chlorophyll pigment concentrations in water bodies | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Silicate concentration parameters in the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bathymetry and Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Air pressure | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Wind strength and direction | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Visible waveband radiance and irradiance measurements in the atmosphere | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Atmospheric humidity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Nitrogen concentrations in suspended particulate material | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Electrical conductivity of the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Horizontal spatial co-ordinates | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sound velocity and travel time in the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Salinity of the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Raw light meter output | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Dissolved oxygen parameters in the water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Carbon concentrations in suspended particulate material | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Platform or instrument orientation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Raw fluorometer output | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Natural Environment Research Council Designated Data Centres | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | unknown | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Atmospheric conditions | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Hydrography | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Meteorological geographical features | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Oceanographic geographical features | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geographical grid systems | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | -50 |
| East | The eastern-most limit of the data resource in decimal degrees | -33 |
| South | The southern-most limit of the data resource in decimal degrees | -70 |
| West | The western-most limit of the data resource in decimal degrees | -62 |
| Regional sea | Southern Ocean | |
| Weddell Sea | ||
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | British Oceanographic Data Centre | |
| Individual name | Polly Hadžiabdic | |
| Position name | Head of the BODC Requests Team | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | British Oceanographic Data Centre | |
| Individual name | Unknown | |
| Position name | Unknown | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | British Oceanographic Data Centre | |
| Individual name | Unknown | |
| Position name | Unknown | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | British Oceanographic Data Centre | |
| Position name | Director | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | British Oceanographic Data Centre | |
| Position name | Director | |
| Delivery point | Joseph Proudman Building, 6 Brownlow Street | |
| Postal code | L3 5DA | |
| City | Liverpool | |
| Administrative area | Merseyside | |
| Country | United Kingdom | |
| enquiries@bodc.ac.uk | ||
| URL | https://www.bodc.ac.uk/ | |
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.bodc.ac.uk/data/bodc_database/nodb/data_collection/6714/ |
| Locator name | Name of the web resource | BODC online data delivery service |
| Locator function | Code that describes the function of the resource. ISO function code chosen from ISO 19115-1 Codelist | order |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | No limitations apply | |
| This states any limitations on access to the data. Multiple occurences are allowed here. One entry shall be from the INSPIRE Metadata registry and the other free text should be part of the resource `Have specific limitations`. | Data are freely available to all following agreement to the terms and conditions of a Data Licence | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Usage restrictions are specified in the terms of the licence |
| Available data formats | ||
| Data format | Format in which digital data can be provided for transfer | Delimited |
| Format in which digital data can be provided for transfer | Network Common Data Form | |
| Format in which digital data can be provided for transfer | Ocean Data View | |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2018-05-18 |
| Date of last revision | The most recent date that the resource was revised. | 2024-11-21 |
| Date of creation | The date that the resource was created. | 2023-12-06 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-06-09 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |