WP1: Data collection and metadata compilation in sea regions: current status EMODnet Chemistry Partner contribution: NIOZ Royal Netherlands Institute for Sea Research Also representing NL-NODC partners: Rijkswaterstaat (Ministry of Infrastructure and the Environment), former NIOO-CEME (now merged with NIOZ), TNO, IMARES. Annual Meeting, June , Istanbul, Turkey

NIOZ CDIs for Greater North Sea: # CDI Number of CDIs at beginning: 1018 Number of CDIs at year 1: 1187 Number of CDIs at year 2: 1406 (1910 including Wadden Sea) Spatial distribution: Annual Meeting, June , Istanbul, Turkey Current status: Greater North Sea

Dutch CDIs for Greater North Sea: # CDI Rijkswaterstaat NIOZ 1910 Former NIOO-CEME (Now NIOZ) TNO Geological Survey IMARES 800 Spatial distribution: Annual Meeting, June , Istanbul, Turkey Current status: Greater North Sea

Total number of CDIs per parameter group per partner currently in EMODnet Chemistry GroupRijkswater staat NIOO-CEME (now NIOZ) NIOZTotal NLTotal EMODnet % NL/EMODnet Fertilizers % Silicates % Organic matter % Chlorophyll % Partial pressure dissolved gases Acidity % Pesticides and biocides % Antifoulants % Pharmaceuticals Heavy metals % Hydrocarbons % Radionuclides % Plastics Total % Current status: Greater North Sea Annual Meeting, June , Istanbul, Turkey

Data quality control performed by the NIOZ data centre: Type of QC: SeawaterNotes: Position check+ Date check+ Missing value+Hardly ever happens Range check(+)Part of visualization Spike+ Pre-existing statistics - Visualization and manual checks +Lot of effort goes into these extensive, manual checks Others: Annual Meeting, June , Istanbul, Turkey

Difficulties encountered: - No difficulties - Extensive QC of all data - More chemical data available asap

Total number of CDIs per parameter group per matrix from NIOZ: GroupSeawater Fertilizers Silicates 2500 Organic matter 400 Chlorophyll 400 Partial pressure dissolved gases 3200 Acidity 80 Pesticides and biocides Antifoulants Pharmaceuticals Heavy metals 430 Hydrocarbons Radionuclides Plastics Planning for the last year Annual Meeting, June , Istanbul, Turkey