CefMAT is currently in beta test

Areas of Benefit

European North-West Shelf Seas and Iberian-Biscay-Irish regional seas

Marine and Coastal Environment: Water Quality, Hydrographic conditions, Marine Biodiversity and Food Webs.

Description of Service

CefMAT is the Cefas Marine Assessment Tool providing scientists access to marine environmental assessments to address policy questions. CefMAT Atlantic Assessments offers a free service that provides data products to support marine assessments in relation to hydrographical conditions, water quality, eutrophication, biodiversity and marine food webs. It uses EO satelites and modelling data from Copernicus Marine Environment Monitoring Service (CMEMS) to provide tailored outputs to assess the state of the seas support the implementation of the Marine Strategy Framework Directive (MSFD).

The specified data sets used from the Copernicus Marine Service are:

Temperature SPM Salinity

Environmental variables data are processed in CefMAT to generate products that are directly relevant to MSFD assessments.

Seawater Temperature is a physical characteristic used to assess the hydrographical conditions of the seas. Data from CMEMS is used in this service to assess changes and trends at sea surface and near seabed in the North Atlantic West Shelf. This service enables the users to query temperature data from 1985 to 2014 and analyse changes by generating temperature assessment products in the form of monthly or time series maps.

Seawater Salinity (dissolved salt concentration) is an important factor in determining many aspects of the chemistry, biological processes, and living organisms within the sea. It is also used to assess the hydrographical conditions of the seas. This service enables to query salinity data at sea surface and near seabed from CMEMS to assess changes and trends from 1985 to 2014 in the North Atlantic West Shelf by generating salinity assessment maps showing monthly averages and changes within the time series.

Suspended particulate matter (SPM) in seawater refers to the content of fine and insoluble particles in the water. SPM influences the seawater clarity, the amount of light through the water column, and hence chemical and biological process that affect primary and secondary production in the seas. This service enables the user to query and analyse SPM data of coastal waters of the North East Irish Sea from a HIGHROC data product (combining in-situ and satellite data) to generate maps of monthly averages that can be useful to assess water quality and eutrophication.

Nutrients content in seawater influences the water quality of the marine environment, specially coastal waters. An increase of nutrients in seawater can induce an excessive growth of algae and the process of Eutrophication, which can become a pollution problem and an important pressure in coastal waters. Nitrates (NO3) concentration is used as an indicator to assess the water quality and status for eutrophication. This service enables the users to query estimates of Nitrates concentrations data from CMEMS, analyse data to obtain products showing monthly averages and changes from 1990 to 2014 in the North East Atlantic West Shelf.

Chlorophyll-a is a green pigment from algae used as an indicator of phytoplankton biomass and primary production in water. The concentration of Chlorophyll-a of seawater in the growing season of the year is used to assess the eutrophication status of the seas. This service enables the users to query satellite data for Chlorophyll-a concentrations from CMEMS, calculate monthly averages (and 90th percentile) from 1998 to 2014 in the North East Atlantic West Shelf and obtain plots and maps showing changes.

Oceanographical, chemical and biological variables in the marine environment create certain conditions from the surface to the bottom of the seas that influence the habitats of living organisms. Fish populations are influenced by those variables and fishing pressures. Cefas (Biermann and Couce) studied the relationships between pelagic fish distribution and pelagic habitats variables (NEAM) using data from satellites. This service enables the user to query satellite data sets, namely concentrations of chlorophyll, sea surface temperature and sea surface height, to generate maps showing the spatial distribution of those variables and estimates of fishing activity for 2016 in some regions of the North East Atlantic.

The service is freely available. Users must register to access the service, please use the register button at the top of the page.


Acknowledgement
Generated using E.U. Copernicus Marine Service information

Services

Temperature

Seawater Temperature is a physical characteristic that influences the state of any component of the seas. Data from Copernicus Marine Service is used to assess changes and trends for temperature at sea surface and near seabed in the North Atlantic Western Shelf. The data products that the user can generate in this service can be used to understand temperature variability and to assess changes in hydrographical conditions and in climate variables

Access Temperature service
Suspended Particulate Matter (SPM)

SPM in seawater causes an increase of light attenuation through the water column, and can cause reductions in primary productivity, which may change the amount of dissolved nitrogen and other processes. The SPM data products derived from HIGHROC and Copernicus Marine Service provided in this service can be useful to assess the water quality, hydrographic conditions and eutrophication.

Access SPM service
Salinity

Salinity in seawater is an important factor in determining many aspects of the chemistry, biological processes, and living organisms within the sea. Salinity at sea surface and near seabed data from Copernicus Marine Service is used for this service to generate products to assess changes and trends in the North Atlantic Western Shelf. The salinity data products of this service can be used to better understand hydrographical conditions of the seas, environmental variability and to assess changes in climate variables.

Access Salinity service
NEAM

Pelagic Fish and habitats (NEAM)
Pelagic habitat conditions influence the distribution of fish populations. This service enables the users to explore pelagic fish distribution and pelagic habitats variables using data from satellite products. The user can query satellite derived environmental variables for Chlorophyll-a, sea surface temperature and sea surface height to obtain maps showing monthly means of selected environment variables and estimates of fishing activity from 2016 AIS data in the North Sea and Irish Sea. The data product from this service can be used to understand and assess food webs, with special reference to pelagic habitats.

Access NEAM service
Nitrates

An increase of nutrients in seawater can induce an excessive growth of algae and the process of Eutrophication, which can become a pollution problem and an important pressure in coastal waters. Nitrates (NO3) concentration is used as an indicator to assess the water quality and status for eutrophication. This service enables the users to query estimates of Nitrates concentrations data from CMEMS, analyse data to obtain products showing monthly averages and changes from 1990 to 2014 in the North East Atlantic West Shelf. The products from this service can be used to inform water quality and eutrophication assessments.

Access Nitrates service
Chlorophyll-a

An excessive growth of algae can influence the process of Eutrophication and affect water quality, especially in coastal waters. Chlorophyll-a is a green pigment from algae used as an indicator of phytoplankton biomass and primary production in water. The concentration of Chlorophyll-a of seawater in the growing season of the year is used to assess the eutrophication status of the seas. This service enables the users to query satellite data for Chlorophyll-a concentrations from CMEMS, calculate monthly averages (and 90th percentile) from 1998 to 2014 in the North East Atlantic West Shelf and obtain plots and maps showing changes. The products from this service can be used to inform water quality and eutrophication assessments.

Access Chlorophyll-a service

Acknowledgement
Generated using E.U. Copernicus Marine Service information

News and Highlights

Data supporting policy questions
15 Feb 2019 View Article