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Metadata: CTD (Conductivity, Temperature and Depth) ESM2 profile data for the POSEIDON project in the Celtic Seas and English Channel for autumn 2012 to 2016
Abstract:
ESM2 CTD (Conductivity, Temperature and Depth) profile data for CEND20_13, CEND2014, CEND2215, CEND22_16, part of the annual autumn pelagic survey in the English Channel, Celtic Sea and Bristol Channel running from 2012-2016. ESM2 is a Cefas developed micro logger for applications requiring a small low power logger with integrated sensors and battery. It has standard sensors for conductivity, temperature, depth, optical backscatter and roll and pitch, and was also fitted with an oxygen optode, sea point fluorometer and light profiler.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 9737 |
| 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. | CTD (Conductivity, Temperature and Depth) ESM2 profile data for the POSEIDON project in the Celtic Seas and English Channel for autumn 2012 to 2016 |
| 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. | CEFASc980cda1-b4a4-4735-9a54-2134f9ef05b9 |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS3288 |
| 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 | 2013-10-13 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2016-10-17 |
| 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'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | ESM2 CTD (Conductivity, Temperature and Depth) profile data for CEND20_13, CEND2014, CEND2215, CEND22_16, part of the annual autumn pelagic survey in the English Channel, Celtic Sea and Bristol Channel running from 2012-2016. ESM2 is a Cefas developed micro logger for applications requiring a small low power logger with integrated sensors and battery. It has standard sensors for conductivity, temperature, depth, optical backscatter and roll and pitch, and was also fitted with an oxygen optode, sea point fluorometer and light profiler. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | An ESM2 profiler was deployed, either attached to a CTD rosette or independently where conditions were too rough to deploy the rosette. Data were subject to a full quality assurance procedure which assigned flags to poor quality data (e.g. for sensor malfunction, drift). Only good quality data is included here, with flags to show the QA level: - QA2:- Manually reviewed and quality controlled. - QA3:- Data calibrated against field samples to produce derived scientific measurements. - QA4:- Additional correction applied to dissolved oxygen measurements to account for effects of salinity, temperature and pressure. Data were extracted from the database and binned to 0.5m depth resolution from the upcast data only. Chlorophyll a analysis results from HPLC (high-performance liquid chromatography, see `https://doi.org/10.14466/CefasDataHub.75`_) were used to convert fluorescence measurements from the ESM2 profiler to chlorophyll a concentration. ESM2 profiles were binned to 0.1m bins, and matched with the discrete HPLC samples using the survey name, and depth and location (closest match, with filters applied to exclude any bad matches). The relationship between total chlorophyll a and fluorescence (using simple linear regression for each survey) was then used to convert fluorescence to chlorophyll a where this relationship was of sufficient quality. .. _`https://doi.org/10.14466/cefasdatahub.75`: https://doi.org/10.14466/CefasDataHub.75 |
| 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 | Raw fluorometer 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 | Chlorophyll pigment concentrations in 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 | 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 | 54 |
| East | The eastern-most limit of the data resource in decimal degrees | 2 |
| South | The southern-most limit of the data resource in decimal degrees | 48.5 |
| West | The western-most limit of the data resource in decimal degrees | -8 |
| 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 | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/3288 |
| 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 | |
| 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 | Geographic Information System | |
| 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. | 2023-05-25 |
| Date of last revision | The most recent date that the resource was revised. | 2026-07-29 |
| Date of creation | The date that the resource was created. | 2015-03-10 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-09-27 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-07-29 |
| 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 |