1. 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 15-16 2015, Istanbul, Turkey

2. 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 15-16 2015, Istanbul, Turkey Current status: Greater North Sea

3. Dutch CDIs for Greater North Sea: # CDI Rijkswaterstaat 17613 NIOZ 1910 Former NIOO-CEME (Now NIOZ) 12894 TNO Geological Survey 13963 IMARES 800 Spatial distribution: Annual Meeting, June 15-16 2015, Istanbul, Turkey Current status: Greater North Sea

4. 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 62678080143471635199% Silicates 2926556784931226817% Organic matter 1914808099942398242% Chlorophyll 246055643480581134477% Partial pressure dissolved gases Acidity 5380 1556735% Pesticides and biocides 836 414020% Antifoulants 485 125139% Pharmaceuticals Heavy metals 2170 1010621% Hydrocarbons 1991 1297215% Radionuclides 652 72790% Plastics Total 5240646839211% Current status: Greater North Sea Annual Meeting, June 15-16 2015, Istanbul, Turkey

5. 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 15-16 2015, Istanbul, Turkey

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

7. Total number of CDIs per parameter group per matrix from NIOZ: GroupSeawater Fertilizers 12000 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 15-16 2015, Istanbul, Turkey