a53ad03f-3938-9383-3836-000000098662 National Oceanography Centre (Southampton) University of Southampton Waterfront Campus European Way Southampton Hampshire SO14 3ZH United Kingdom enquiries@noc.ac.uk http://noc.ac.uk web site 2026-04-02T00:00:00 ISO 19115:2003/19139 1.0 WGS 1984 In-situ parallel nutrient sensor deployments at the OBSEA observatory, Spain 2022-06-16 2024-06-26 2024-11-16 a53ad03f-3938-9383-3836-000000098662 DOI:10.17882/98662 Patey Matthew D., López García Patricia, Nogueras Marc, Toma Daniel Mihai, Carandell Matias, Martínez Padró Enoc, Del Rio Fernandez Joaquín (2022). In-situ parallel nutrient sensor deployments at the OBSEA observatory, Spain. SEANOE. https://doi.org/10.17882/98662 This dataset contains measurements of dissolved nitrate, phosphate and silica during two deployments, each lasting several weeks each at the OBSEA observatory during 2022 and 2023. Three prototype lab on chip in situ chemical analysers developed at the National Oceanography Centre, UK, were deployed at the site during summer 2022 and summer 2023. The nitrate sensor uses the Griess colorimetric assay and a copperised cadmium column to measure dissolved nitrate (and nitrite). Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and a standard solution containing 10 µmol / L of potassium nitrate were measured immediately prior to each sample measurement. Nitrate data is available between 2022-06-16 and 2022-07-06. Sample measurements were made every 2 hours initially, but this was decreased to once every 4 hours from 2022-06-30. The phosphate sensor uses a colorimetric assay based on the Molybdenum Blue method. Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and two standard solutions containing 0.5 µmol / L and 2 µmol / L of potassium dihydrogen phosphate were measured immediately prior to each sample measurement. Phosphate data is available between 2022-06-16 and 2022-07-05, with a sampling frequency of every 2 hours (decreasing to every 4 hours from 2022-06-30), and between 2023-07-21 and 2023-09-12, with a sampling frequency of every 12 hours. The dissolved silica sensor uses a colorimetric assay also based on the Molybdenum Blue method. Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and two standard solutions containing 5 µmol / L and 15 µmol / L of sodium hexafluorosilicate were measured immediately prior to each sample measurement. Dissolved silica data is available between 2023-07-21 and 2023-08-12, with a sampling frequency of every 6 hours. Timestamps in the datafiles are in UTC and concentration units are µmol / L. This work was made possible by a TNA from the JERICO-S3  project funded by the European Commission – H2020 Framework Programme (grant agreement No.871153).   Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications. SEA scieNtific Open data Edition By address: IFREMER / IDM / SISMER - Scientific Information Systems for the SEA, IFREMER Centre de Bretagne, ZI Pointe du diable CS 10070 PLOUZANE 29280 France data@seanoe.org https://www.seanoe.org/ web site Ifremer, Scientific Information Systems for the sea IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr https://data.ifremer.fr/Centre-de-donnees web site Ifremer, Scientific Information Systems for the sea IFREMER Centre de Bretagne ZI Pointe du diable CS 10070 PLOUZANE 29280 France sismer@ifremer.fr https://data.ifremer.fr/Centre-de-donnees web site Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme North Atlantic Ocean Mediterranean Region Mediterranean Sea Mediterranean Sea, Western Basin Balearic Sea Atlantic Ocean European mainland Northeast Atlantic Ocean (40W) SeaVoX salt and fresh water body gazetteer 2024-01-15 SeaVoX salt and fresh water body gazetteer Nutrients SeaDataNet Agreed Parameter Groups 2023-07-04 SeaDataNet Agreed Parameter Groups nutrient analysers SeaDataNet device categories 2024-01-16 SeaDataNet device categories SeaVoX Device Catalogue 2024-01-29 SeaVoX Device Catalogue Nitrate concentration parameters in the water column Phosphate concentration parameters in the water column Silicate concentration parameters in the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 SeaDataNet Parameter Discovery Vocabulary CRUISE SUMMARY REPORT INVENTORY (CSR) 2023-10-02 land or seafloor SeaVoX Platform Categories 2024-01-16 SeaVoX Platform Categories ICES Platform Codes 2024-01-16 ICES Platform Codes EUROPEAN DIRECTORY OF MARINE ENVIRONMENTAL RESEARCH PROJECTS (EDMERP) 2020-06-05 Delimited MEDIN data format categories 2024-01-29 MEDIN data format categories World Register of Marine Species (WORMS) 2024-02-07 SeaDataNet Measurement Periodicity Categories 2024-01-29 SeaDataNet Measurement Periodicity Categories BODC-approved data storage units (Spatial Unit) 2023-10-12 BODC-approved data storage units (Spatial Unit) BODC-approved data storage units (Vertical Unit) 2023-10-12 BODC-approved data storage units (Vertical Unit) no limitations to public access Conditions for access and use apply CC-BY 4.0 Oceans 2022-06-16 2023-09-12 1.75 1.7525 41.18 41.182 Delimited 1 https://cloud.emodnet-ingestion.eu/index.php/s/TaqSzlGsymyuob5 WWW:DOWNLOAD-1.0-http--download WWW:LINK-1.0-http--link COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata 2010-12-08 See the referenced specification false Corrigendum to INSPIRE Metadata Regulation published in the Official Journal of the European Union, L 328, page 83 2010-12-08 See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See the referenced specification false Processed data|This dataset contains measurements of dissolved nitrate, phosphate and silica during two deployments, each lasting several weeks each at the OBSEA observatory during 2022 and 2023. Three prototype lab on chip in situ chemical analysers developed at the National Oceanography Centre, UK, were deployed at the site during summer 2022 and summer 2023. The nitrate sensor uses the Griess colorimetric assay and a copperised cadmium column to measure dissolved nitrate (and nitrite). Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and a standard solution containing 10 µmol / L of potassium nitrate were measured immediately prior to each sample measurement. Nitrate data is available between 2022-06-16 and 2022-07-06. Sample measurements were made every 2 hours initially, but this was decreased to once every 4 hours from 2022-06-30. The phosphate sensor uses a colorimetric assay based on the Molybdenum Blue method. Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and two standard solutions containing 0.5 µmol / L and 2 µmol / L of potassium dihydrogen phosphate were measured immediately prior to each sample measurement. Phosphate data is available between 2022-06-16 and 2022-07-05, with a sampling frequency of every 2 hours (decreasing to every 4 hours from 2022-06-30), and between 2023-07-21 and 2023-09-12, with a sampling frequency of every 12 hours. The dissolved silica sensor uses a colorimetric assay also based on the Molybdenum Blue method. Each sample measurement was calibrated by measuring onboard calibration standards prepared in artificial seawater with a salinity of 35. A blank solution and two standard solutions containing 5 µmol / L and 15 µmol / L of sodium hexafluorosilicate were measured immediately prior to each sample measurement. Dissolved silica data is available between 2023-07-21 and 2023-08-12, with a sampling frequency of every 6 hours. Timestamps in the datafiles are in UTC and concentration units are µmol / L. This work was made possible by a TNA from the JERICO-S3 project funded by the European Commission – H2020 Framework Programme (grant agreement No.871153).