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Metadata: Underway (Ferrybox) data collected in North West European Shelf waters from 2010 onwards
Abstract:
A 4H JENA Ferrybox system runs continuously on RV Cefas Endeavour during all surveys where appropriate since 2010, generating data across the North Sea, Irish Sea, and English Channel at a resolution of one measurement per minute. A continuous inflow is taken from a dedicated inlet and pump at approximately 4m under the waterline. Key parameters measured include sea surface temperature (SST), through a hull mounted temperature probe, salinity (SAL), chlorophyll fluorometry (FLUORS), turbidity (FTU), and Photosynthetically Active Radiation (PAR). Other parameters recorded include meteorological variables, oxygen concentrations, and measures of photosynthetic activity. New data is added annually.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 9220 |
| 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 (Ferrybox) data collected in North West European Shelf waters from 2010 onwards |
| 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. | CEFAS1c58089b-616c-4375-97e8-28941d8750c1 |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS21871 |
| 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 | 2010-08-07 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2026-02-27 |
| 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'. | continual |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | A 4H JENA Ferrybox system runs continuously on RV Cefas Endeavour during all surveys where appropriate since 2010, generating data across the North Sea, Irish Sea, and English Channel at a resolution of one measurement per minute. A continuous inflow is taken from a dedicated inlet and pump at approximately 4m under the waterline. Key parameters measured include sea surface temperature (SST), through a hull mounted temperature probe, salinity (SAL), chlorophyll fluorometry (FLUORS), turbidity (FTU), and Photosynthetically Active Radiation (PAR). Other parameters recorded include meteorological variables, oxygen concentrations, and measures of photosynthetic activity. New data is added annually. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Water passes through the hull inlet while Endeavour is underway, then enters a circuit which contains other instruments approximately three minutes later. Data is autonomously recorded by the Ferrybox system, by taking an average of sensors readings over a minute, and stored on the Ferrybox computer on board Cefas Endeavour. Data is transferred to central network drives upon the ships return to shore, and is backed up by an emailer module every 10 minutes while the ship is underway. QA is completed on shore using a custom R script. GPS data is checked to remove errors, including automatic checks of speed, course, and location. A correction for flow lag is applied to sensors within the ferrybox pipework, and data recorded during acid washes and where flow rates were too high or low is flagged. All variables are checked for reasonable ranges and rates of change. Data is validated by comparisons against discrete samples in the case of salinity, and for temperature and fluorescence though comparison between different instruments measuring the same parameter (eg. hull temperature probe and in-circuit seabird temperature sensor). In-house calibrations are also used to correct for instrument drift. Suspended particulate matter is derived from turbidity (FTU) values using the relationship between discrete samples and turbidity measurements throughout the ferrybox series. Chlorophyll is derived by survey using the relationship between fluorescence and discrete samples taken, for surveys where no discrete sample is taken a generic relationship is used.Only data which has passed all quality control checks is included in this product.This product includes data at both qc_level 2 and 3 qc_level 2 is where all of the above checks have been done, but offsets / corrections based on external reference material have not been applied. At qc_level 3 where these corrections have been applied. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Water column temperature and salinity |
| 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 | Salinity of the water column | |
| 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 | Habitats and biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Water column | |
| 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 | data.gov.uk | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 64 |
| East | The eastern-most limit of the data resource in decimal degrees | 14 |
| South | The southern-most limit of the data resource in decimal degrees | 47.5 |
| West | The western-most limit of the data resource in decimal degrees | -18 |
| 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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.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 | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Department for Environment, Food and Rural Affairs (DEFRA) | |
| defra.helpline@defra.gov.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/21871 |
| Locator name | Name of the web resource | Cefas Data Portal |
| 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 | noLimitations | |
| 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 | http://standards.iso.org/iso/19139/resources/gmxCodelists.xml#MD_RestrictionCode | |
| 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. | 2024-07-18 |
| Date of last revision | The most recent date that the resource was revised. | 2026-02-27 |
| Date of creation | The date that the resource was created. | 2024-04-09 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-02-27 |
| 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 | 3.1.1 |