BGS Hosted Metadata
Gridded temperature, salinity and chlorophyll-a fluorescence from a Seaglider deployed for 21 days in the Celtic Sea in April 2015
An iRobot Seaglider (Serial Number 534) carrying a Seabird CT Sail, Paine pressure sensor and Wetlabs ECO-puck was deployed in the Celtic Sea, Northwest European Shelf for 21 days between the 4th and 25th April 2015. It maintained a position within 10 km of 49° 24.3’ N, 8° 32.9’W and completed 1547 profiles between the sea surface and 120 m water depth. Its mission was to observe the evolution of the water column structure and the accumulation of phytoplankton biomass during spring phytoplankton bloom. Following the extraction of raw data and application of manufacturer calibrations, thermal lag corrections were applied to the temperature following the methods of Garau et al. (2011) and drawing upon a flight model similar to that described by Frajka-Williams et al (2011). Unrealistically high and low values of salinity, derived after thermal inertia corrections, were removed. Further, salinity values within 40 m of the surface (where the vertical speed of the glider was typically unstable) that were greater than 3 standard deviations from the mean salinity within top 40 m were removed. Each salinity profile was smoothed with an 8 m running mean window. Four calibrated CTD casts taken within 1.6 km of the glider were used to calibrate the gliders temperature and salinity. Based on the mean temperature and salinity of water between 80 m and 105 m the glider CT sensors were found to be reading 0.0277°C and 0.0024 psu too low. These constant offsets were corrected for. Chlorophyll-a fluorescence was derived based on the manufacturers calibrations and checked against a fluorometer on the CTD. There is evidence of quenching within the surface 30-40 m during the day which has not been removed or corrected for here. Temperature, salinity and chlorophyll-a fluorescence were gridded onto regular 1 m depth intervals and the profile average position and time calculated. The glider was funded by the NERC Sensors on Gliders Programme and deployed during a UK Natural Environment Research Council (NERC) Shelf Sea Biogeochemistry Programme cruise (DY029). The processed data are held at BODC in Matlab format.
Simple
- Alternate title
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British Oceanographic Data Centre record 1048Glider534_SoG_Hopkins
- Date (Publication)
- 2022-02-18
- Date (Creation)
- 2020-09-17
- Date (Revision)
- 2020-09-28
- Citation identifier
- http://www.bodc.ac.uk/ / EDMED7072
- Point of contact
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Organisation name Individual name Electronic mail address Role National Oceanography Centre (Liverpool)
Unknown
Owner National Oceanography Centre (Liverpool)
Unknown
Originator British Oceanographic Data Centre
Custodian British Oceanographic Data Centre
Distributor
- Maintenance and update frequency
- As needed
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MEDIN metadata record availability
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SeaDataNet PDV
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INSPIRE themes
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Vertical Coverages
- Access constraints
- Other restrictions
- Other constraints
- No limitations apply
- Other constraints
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Data are freely available
- Use constraints
- Other restrictions
- Other constraints
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No conditions apply
- Spatial representation type
- Text, table
- Language
- English
- Topic category
-
- Location
- Elevation
- Biota
- Oceans
))
- Geographic identifier
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Celtic Sea
SeaVoX water bodies 2021-10-28 revision
- Begin date
- 2015-04-04
- End date
- 2015-04-25
- Unique resource identifier
- urn:ogc:def:crs:EPSG::4326
- Codespace
-
OGP
- Distribution format
-
Name Version Binary
- OnLine resource
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Protocol Linkage Name https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/af93e70f-9a10-2f0c-e053-6c86abc0c311/ Published dataset - doi:10.5285/af93e70f-9a10-2f0c-e053-6c86abc0c311
- Hierarchy level
- Dataset
Conformance result
- Title
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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
- Date (Publication)
- 2010-12-08
- Explanation
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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.
- Pass
- Yes
- Statement
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This dataset was created by the organisations with the "originator" role in this metadata record following their in-house data processing and quality control procedures. The data were then provided to the British Oceanographic Data Centre (BODC) for publication within the Published Data Library (PDL).
Instrument(s) used to collect data: fluorometers; salinity sensor; water pressure sensors; water temperature sensor.
Metadata
- File identifier
- 7ca12a0826e850d299559087580fae58 XML
- Metadata language
- English
- Hierarchy level
- Dataset
- Date stamp
- 2022-02-18T11:20:57
- Metadata standard name
- MEDIN
- Metadata standard version
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3.1.1
- Metadata author
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Organisation name Individual name Electronic mail address Role British Oceanographic Data Centre
Polly Hadžiabdić
Point of contact
)))
