69915b4d545d5a4dbf65e1228529e70a English dataset Polly Hadžiabdić British Oceanographic Data Centre Head of the BODC Requests Team Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ pointOfContact 2025-06-09T14:49:32 MEDIN 3.1.2 urn:ogc:def:crs:EPSG::4326 OGP Underway and CTD data collected as part of “Gliders: Excellent New Tools for Observing the Ocean (GENTOO)”, Southern Ocean, January to March 2012 British Oceanographic Data Centre record 1048GENTOO_project_data 2018-05-18 publication 2023-12-06 creation 2024-11-21 revision EDMED6714 http://www.bodc.ac.uk/ 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. Unknown British Oceanographic Data Centre Unknown Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ owner Unknown British Oceanographic Data Centre Unknown Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ originator British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ custodian British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ distributor asNeeded Acoustic backscatter in the water column Visible waveband radiance and irradiance measurements in the water column Air temperature Temperature of the water column Chlorophyll pigment concentrations in water bodies Silicate concentration parameters in the water column Bathymetry and Elevation Air pressure Wind strength and direction Visible waveband radiance and irradiance measurements in the atmosphere Atmospheric humidity Nitrogen concentrations in suspended particulate material Electrical conductivity of the water column Horizontal spatial co-ordinates Sound velocity and travel time in the water column Salinity of the water column Raw light meter output Dissolved oxygen parameters in the water column Carbon concentrations in suspended particulate material Platform or instrument orientation Raw fluorometer output SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Natural Environment Research Council Designated Data Centres Marine Environmental Data and Information Network MEDIN metadata record availability 2012-01-11 revision unknown SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision Atmospheric conditions Elevation Hydrography Meteorological geographical features Oceanographic geographical features Geographical grid systems GEMET - INSPIRE themes, version 1.0 2009-07-31 revision otherRestrictions No limitations apply Data are freely available to all following agreement to the terms and conditions of a Data Licence otherRestrictions Usage restrictions are specified in the terms of the licence English climatologyMeteorologyAtmosphere oceans location biota -62.00 -33.00 -70.00 -50.00 SeaVoX water bodies 2024-12-11 revision Southern Ocean SeaVoX water bodies 2024-12-11 revision Weddell Sea SeaVoX water bodies 2024-12-11 revision Drake Passage 2012-01-20 2012-03-22 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 Delimited Network Common Data Form Ocean Data View https://www.bodc.ac.uk/data/bodc_database/nodb/data_collection/6714/ BODC online data delivery service National Oceanographic Database data delivery service; pre-filtered for the data collection. order dataset COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 publication BODC protocols are based on the Open Archival Information System (OAIS) model enabling BODC to iterate towards compliance with the on-going evolution and development of community requirements including FAIR (Findable,Accessible,Interoperable,Reusable), TRUST (Transparency, Responsibility, User community, Sustainability, Technology) and CARE (Collective Benefit, Authority to Control, Responsibility, Ethics). Data managers quality assure submissions and assemble the metadata necessary for curation. Submissions (as received) are placed in a long-term accession and stored in triplicate across multiple sites. Appropriate data are transferred into a standard internal format with source variable names mapped to controlled vocabularies, documentation assembled, and metadata loaded into BODC databases. Access to these data is through direct request, the BODC website and through partner repositories such as SeaDataNet. Access control is attained by assigning a data policy to each set of data and this policy is used to administer access when data are requested. Discovery metadata is aligned with EU INSPIRE (through MEDIN) and SeaDataNet community standards. Data are converted to open community formats including Ocean Data View ASCII and SeaDataNet NetCDF, with data described using terms from the NERC vocabulary server. BODC submission agreements are documented on the BODC website and customer service is assured with a dedicated requests team that serve data following local regulations including General Data Protection Regulation (GDPR) 2018 and Environmental Information Regulations (EIR) 2004. true 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.