2aeec93007695e679162e838174f8b14 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 2026-03-17T17:08:35 MEDIN 3.1.2 urn:ogc:def:crs:EPSG::4326 OGP Water column profiles from offshore locations around St Helena Island between December 2017 and September 2019 British Oceanographic Data Centre record 1048_St_Helena_CTDs 2022-03-02 publication 2020-01-28 creation 2026-03-17 revision EDMED6994 http://www.bodc.ac.uk/ The dataset comprises of vertical profiles of water column properties (temperature, salinity, conductivity, pressure, depth, sound velocity and density) of the upper ocean (up to 500m) from 6 locations around St Helena Island. The locations were repeat sampled monthly over 22 months between December 2017 and September 2019, with opportunistic profiles taken from the two main seamounts (Bonaparte and Cardno complex) and the surrounding open ocean. Each individual cast, with up and down profiles, is contained in a separate .csv file. The file naming follows this schema: YYYYMM_stationname. An additional .csv file is provided with details of each serial number and CTD cast (with date, station names also included). Data have been gathered using a Valeport mini CTD (with a passive flow induction cell, Platinum Resistance Thermometer and a strain gauge transducer) and extracted using Valeport DataLogX2 software (version1.0.4.1270). The CTDs were deployed using vertical deployment from a 12m vessel and were hand hauled. No calibration has been applied when using the Valeport mini-CTD with acetal housing and have been supplied to BODC in raw format. The surveyors have been dependent on the sensor calibrations applied by the CTD manufacturer (Valeport). The data have been collected in the framework of the Darwin PLUS Initiative project 'Oceanographic influences on the St Helena pelagic ecosystem' (reference number 070). The data collection activities were carried out by the Government of St Helena with additional collaboration from the British Antarctic Survey (BAS), the Centre for Environment, Fisheries and Aquaculture Science (Cefas), and the International Commission for the Conservation of Atlantic Tunas (ICCAT). As part of the blue-belt initiative, St Helena was planning to declare a Category VI Sustainable use MPA in the entire maritime zone in early 2017. A key-part of ensuring sustainability is to understand the pelagic ecosystem and how seasonal or long-term changes in that system will impact the abundance and distribution of the whale sharks and fish on which the economy of the island depends. The Darwin project wanted to address key priorities including (i) improving conservation and management of the marine environment (ii) developing ecosystem approaches to marine management (iii) promoting sustainable fisheries and (iv) developing data systems on biodiversity. Unknown South Atlantic Environmental Research Institute Unknown PO Box 609, Stanley Cottage Stanley FIQQ 1ZZ Falkland Islands (Malvinas) info@saeri.ac.fk https://www.south-atlantic-research.org owner Unknown South Atlantic Environmental Research Institute Unknown PO Box 609, Stanley Cottage Stanley FIQQ 1ZZ Falkland Islands (Malvinas) info@saeri.ac.fk https://www.south-atlantic-research.org 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 Salinity of the water column Electrical conductivity of the water column Temperature of the water column Sound velocity and travel time in the water column Density of the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2009-07-31 revision unknown SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision Marine Environmental Data and Information Network Natural Environment Research Council Designated Data Centres MEDIN metadata record availability 2012-01-11 revision otherRestrictions No limitations apply Data are only available on the basis of case-by-case negotiation for usage otherRestrictions Usage restrictions are specified in the terms of the licence English oceans -9.23 -2.18 -19.38 -12.55 SeaVoX water bodies 2025-08-07 revision South Atlantic Ocean 2017-12-19 2019-09-25 Delimited https://www.bodc.ac.uk/about/contact_us/contact_details/ Enquiries contact details BODC's address, telephone and fax numbers for general enquiries offlineAccess 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 scientists at the Government of St Helena as part of a Darwin PLUS Initiative project titled “Oceanographic influences on the St Helena pelagic ecosystem” (ref number 070), following their in-house data processing and quality control procedures. The data were then provided to the British Oceanographic Data Centre (BODC) for archival and discoverability. No data quality or data processing procedures were applied by BODC.Instrument(s) used to collect data: CTD.