2fd970bce0d98968d0c9017bf049571e English dataset Department of Agriculture, Environment and Rural Affairs Data contact Marine.InfoRequests@daera-ni.gov.uk pointOfContact 2022-07-22 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 DAERA Annual Chlorophyll a Survey (2008-2017) 2018-04-26 publication 2018-04-26 creation 2020-02-18 revision DAERA-CHL http://www.daera-ni.gov.uk The chlorophyll a survey is an annual assessment of the Chlorophyll a concentration in micrograms per litre found in surface waters in coastal and transitional (estuarine) waters around Northern Ireland. Spot samples are taken at established sample sites and returned to the laboratory for analysis. The dataset contributes to Water Framework Directive (WFD) classification, as well as providing a eutrophication indicator under Nitrates Directive (ND), and Urban Waste Water Treatment Directive (UWWTD). Selected samples are submitted to the MERMAN database for inclusion in the CSEG (Clean Seas Evidence Group) work programme. The data held in MERMAN fulfils the UK's mandatory monitoring requirements under the Oslo and Paris Convention (OSPAR), Joint Assessments and Monitoring Programme (JAMP). Within DAERA, this survey forms part of the Marine Phytoplankton and Chlorophyll work programme (MM(YY)-14) Department of Agriculture, Environment and Rural Affairs Data contact Marine.InfoRequests@daera-ni.gov.uk originator Department of Agriculture, Environment and Rural Affairs Data contact Marine.InfoRequests@daera-ni.gov.uk custodian annually Delimited Marine Environmental Data and Information Network NDGO0005 Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Chlorophyll pigment concentrations in water bodies SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Marine Environment Monitoring Global Change Master Directory Science Keywords V5 2006-08-31 creation Although the Department (of Agriculture, Environment and Rural Affairs - DAERA) has made every effort to prepare the data and believes the information it contains is reliable within the context in which the data was originally generated/collected, errors within the data remain a possibility. Therefore the Department gives no warranty regarding the accuracy or suitability of the data for the data requestors intended use, and accepts no responsibility for any errors or omissions, or for the use of, or results obtained from the use of this data, whether in part or in whole. otherRestrictions No restriction to public access English oceans Charting Progress 2 Sea Areas 2009-06-18 creation Irish Sea Charting Progress 2 Sea Areas 2009-06-18 creation Minches & Western Scotland ICES Rectangles 2009-05-01 creation 39E2 ICES Rectangles 2009-05-01 creation 37E3 ICES Rectangles 2009-05-01 creation 39E3 ICES Rectangles 2009-05-01 creation 37E4 ICES Rectangles 2009-05-01 creation 38E4 ICES Rectangles 2009-05-01 creation 39E4 SeaDataNet vertical extent keywords 2010-01-01 revision water column -7.3833 -5.2739 53.9639 55.3492 2008-01-22 2017-12-06 Department of Agriculture, Environment and Rural Affairs Data contact Marine.InfoRequests@daera-ni.gov.uk distributor https://www.opendatani.gov.uk/dataset/9a98860a-1c75-4cfa-9916-4cd2918a7147/resource/56c8c882-cdb0-4353-aa56-cccd42f647fa/download/daera-chlorophyll-a-survey-data---2008-to-2017.ods DAERA Chlorophyll a survey results - 2008 to 2017 A link to the web service or dataset https://www.opendatani.gov.uk OpenData NI portal A link to the general site dataset MEDIN data guideline for the recording of water sample data 2011-02-02 publication See the referenced specification true Samples are collected from a boat by surface water collection in sterilised glass nalgene bottles. Samples are filtered within 24 hours under vacuum filtration, using Whatman GF/C47mm glass microfibre filter papers. Filter papers are left overnight at 4 degrees celcius in the dark with cold acetone to extract. Analysis is performed in house on a Turner Designs 'Trilogy' fluorometer. Samples are analysed in duplicate and the average is reported. Solid standard QCs are used at the start and end of runs and reported on Shewart charts. Calibration is carried out at 4 points using RS AQUA liquid standards. Participation in QUASIMEME is mandatory for all staff who take part in the analysis. In house training is provided by competent staff members. Analysis is of Chlorophyll a only.