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Metadata: Copernicus Chlorophyll for the UK shelf 1998 to 2014
Abstract:
This is a chlorophyll product developed from CMEMS product OCEANCOLOURATLCHLL3REPOBSERVATIONS009_067: DATASET-OC-ATL-CHL-MULTI-CCI-L3-CHL1KMDAILY-REP-V02. There are two gridded products, yearly growing season (March-October) mean chlorophyll concentrations, and yearly growing season 90th percentile chlorophyll concentrations. The data covers the period 1998 - 2014 and is at 1km resolution. Means and 90th percentiles are also provided for a set of regions used for eutrophication assessments: MSFD regions, regional seas, WFD coastal areas, and Ecohydrodynamic regions. Files: grseasonchlmean9814v2.nc and grseasonchl90pc9814v3.nc contain gridded growing season means and 90th percentiles for the years 1998 to 2014, at approximately 1km resolution. grseasonchlmean9814v25km.nc and grseasonchl90pc9814v35km.nc contain gridded growing season means and 90th percentiles for the years 1998 to 2014, at approximately 5km resolution. chlMSFDgrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for each of the MSFD regions: Greater North Sea and Celtic Seas for the years 1990 - 2014. chlRegionalSeasgrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for each of the regional seas (1-8, also known as charting progress 2 regions) for the years 1990 - 2014. chlWFDcoastalgrseasonstats19902014v1b.csv contains growing season chlorophyll means and 90th percentiles for each of the WFD coastal assessment regions, for the years 1990 - 2014. chlEcohydrogrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for Ecohydrodynamic regions (cropped to the MSFD region extent). Corresponding shapefiles for all of these regions are also available ( MSFDregions.zip, Regionalseas.zip, WFD_coastal.zip, Ecohydrodynamicregionscropped.zip)
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 10299 |
| 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. | Copernicus Chlorophyll for the UK shelf 1998 to 2014 |
| 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. | CEFAS9931ace6-76fb-49ae-a12e-e9e29048841a |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS19628 |
| 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 | 1998-03-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2014-10-31 |
| 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. | This is a chlorophyll product developed from CMEMS product OCEANCOLOURATLCHLL3REPOBSERVATIONS009_067: DATASET-OC-ATL-CHL-MULTI-CCI-L3-CHL1KMDAILY-REP-V02. There are two gridded products, yearly growing season (March-October) mean chlorophyll concentrations, and yearly growing season 90th percentile chlorophyll concentrations. The data covers the period 1998 - 2014 and is at 1km resolution. Means and 90th percentiles are also provided for a set of regions used for eutrophication assessments: MSFD regions, regional seas, WFD coastal areas, and Ecohydrodynamic regions. Files: grseasonchlmean9814v2.nc and grseasonchl90pc9814v3.nc contain gridded growing season means and 90th percentiles for the years 1998 to 2014, at approximately 1km resolution. grseasonchlmean9814v25km.nc and grseasonchl90pc9814v35km.nc contain gridded growing season means and 90th percentiles for the years 1998 to 2014, at approximately 5km resolution. chlMSFDgrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for each of the MSFD regions: Greater North Sea and Celtic Seas for the years 1990 - 2014. chlRegionalSeasgrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for each of the regional seas (1-8, also known as charting progress 2 regions) for the years 1990 - 2014. chlWFDcoastalgrseasonstats19902014v1b.csv contains growing season chlorophyll means and 90th percentiles for each of the WFD coastal assessment regions, for the years 1990 - 2014. chlEcohydrogrseasonstats19982014.csv contains growing season chlorophyll means and 90th percentiles for Ecohydrodynamic regions (cropped to the MSFD region extent). Corresponding shapefiles for all of these regions are also available ( MSFDregions.zip, Regionalseas.zip, WFD_coastal.zip, Ecohydrodynamicregionscropped.zip) |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | This product was generated using E.U. Copernicus Marine Service Information. Daily values from remote sensing data (CMEMS product 009_067 DATASET-OC-ATL-CHL-MULTI-CCI-L3-CHL1KMDAILY-REP-V02) were used to obtain growing season 90th percentile values and means of chlorophyll concentrations to plot time series from 1998 to 2014. Processing was done in python (part A): 1. Load netcdfs 2. Subset to the area of interest (15°W to 4°E, 48°N to 64°N). 3. Export netcdf of subsetted data layer (for part B) 4. Calculate the 90th percentile over March-October for each year 5. Export netcdf of growing season 90th percentiles ( chlgrseason90pc19982014.nc) 6. Calculate the mean over March-October for each year 7. Export netcdf of growing season mean (chlgrseasonmean19982014.nc) And R (part B) 1. Load netcdfs (from step 3 above) 2. Reshape data arrays to long data table format 3. Spatial overlay with regions 4. Calculate 90th percentile and mean over regions and growing season months for each year 5. Export csvs Additionally, to facilitate fast display in browsers the gridded netcdfs were resampled in R using bilinear interpolation to approximately 5km resolution. |
| Related keywords | ||
| Keyword | 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 | Remote Sensing | |
| 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 | Unknown | |
| 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 | 3.5 |
| South | The southern-most limit of the data resource in decimal degrees | 48 |
| West | The western-most limit of the data resource in decimal degrees | -15 |
| 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 | European Commission | |
| info@publications.europa.eu | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/19628 |
| 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 | https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ | |
| 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. | 2025-04-29 |
| Date of last revision | The most recent date that the resource was revised. | 2025-04-29 |
| Date of creation | The date that the resource was created. | 2019-01-31 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-19 |
| Metadata date | The date when the content of this metadata record was last updated. | 2025-04-29 |
| 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 | 3.1.1 |