655acca5d2855c239b21b45d035b3633 English dataset Polly Hadžiabdić British Oceanographic Data Centre Head of Enquiries Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ pointOfContact 2026-03-13T16:37:47 MEDIN 3.1.2 urn:ogc:def:crs:EPSG::4326 OGP Nitrogen fixation in the Arctic Ocean (N-ARC) Project Datasets (July - August 2023) British Oceanographic Data Centre record 1048_NE_T001240_1 2025-02-11 publication 2026-02-19 creation 2026-02-19 revision EDMED7360 http://www.bodc.ac.uk/ This dataset comprises of data from stainless steel and titanium CTD casts and towfish, results of a nutrient addition incubation experiment, and underway meteorological, hydrographic, and navigational data. The CTD casts and towfish were sampled for biogeochemical properties: nitrate + nitrite, silicate, phosphate, nitrite, d18O, dissolved oxygen, chlorophyll-a, particulate carbon, carbon fixation rates and oxygen isotopes. The CTD casts also comprise of downcast sensor profile data and upcast sensor data at time of bottle firing: temperature, salinity, density, dissolved oxygen, optical backscatter, beam transmittance and attenuation, upward photosynthetically active radiation (PAR), and chlorophyll-a fluorescence. The underway sensor data are sea surface hydrography (temperature and salinity), optical (chlorophyll-a fluorescence, transmission) and meteorological (wind speed and direction, air temperature, air pressure, relative humidity PAR, TIR). The nutrient addition experiments were sampled for Nitrate+nitrite, phosphate, silicate, chlorophyll a, and Fv:Fm after addition of nitrate, phosphate, and/or iron chloride. All of the data were collected during cruise DY167 (GEOTRACES cruise GApr19) in July-August 2023 from Southampton up to the Norwegian and Barents Seas and cover the relatively warm Atlantic Water inflow, fresher water on the Spitzbergen Bank, coastal/glacial outflow around Svalbard, and Arctic water around sea ice. These data were collected to better determine how temperature, light, nutrients, and iron control the distribution and activity of nitrogen fixing organisms in the Arctic Ocean. This dataset was generated by the National Oceanography Centre (NOC), the University of Liverpool (UoL), and the University of Southampton, under Natural Environment Research Council (NERC) Discovery Science grant "Nitrogen fixation in the Arctic Ocean", N-ARC (grant numbers NE/T000570/1 and NE/T001240/1). Unknown University of Liverpool Department of Earth, Ocean and Ecological Sciences Unknown +44 (0)151 794 5146 Jane Herdman Building Liverpool Merseyside L69 3GP United Kingdom soesnorth@liverpool.ac.uk https://www.liverpool.ac.uk/earth-ocean-and-ecological-sciences/ owner Unknown University of Liverpool Department of Earth, Ocean and Ecological Sciences Unknown +44 (0)151 794 5146 Jane Herdman Building Liverpool Merseyside L69 3GP United Kingdom soesnorth@liverpool.ac.uk https://www.liverpool.ac.uk/earth-ocean-and-ecological-sciences/ originator Unknown University of Southampton School of Ocean and Earth Science Unknown +44 (0)23 8059 2011 National Oceanography Centre, European Way Southampton Hampshire SO14 3ZH United Kingdom soes@noc.soton.ac.uk http://www.soes.soton.ac.uk/ owner Unknown University of Southampton School of Ocean and Earth Science Unknown +44 (0)23 8059 2011 National Oceanography Centre, European Way Southampton Hampshire SO14 3ZH United Kingdom soes@noc.soton.ac.uk http://www.soes.soton.ac.uk/ originator Unknown National Oceanography Centre (Liverpool) Unknown +44 (0)151 795 4800 Joseph Proudman Building, 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@noc.ac.uk http://noc.ac.uk owner Unknown National Oceanography Centre (Liverpool) Unknown +44 (0)151 795 4800 Joseph Proudman Building, 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@noc.ac.uk http://noc.ac.uk originator Unknown National Oceanography Centre (Southampton) Unknown University of Southampton Waterfront Campus European Way Southampton Hampshire SO14 3ZH United Kingdom enquiries@noc.ac.uk http://noc.ac.uk owner Unknown National Oceanography Centre (Southampton) Unknown University of Southampton Waterfront Campus European Way Southampton Hampshire SO14 3ZH United Kingdom enquiries@noc.ac.uk http://noc.ac.uk originator British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ custodian British Oceanographic Data Centre Director Joseph Proudman Building 6 Brownlow Street Liverpool Merseyside L3 5DA United Kingdom enquiries@bodc.ac.uk https://www.bodc.ac.uk/ distributor asNeeded Horizontal spatial co-ordinates Electrical conductivity of the water column Primary production in the water column Atmospheric visibility and transparency Wind strength and direction Phosphate concentration parameters in the water column Dissolved total or organic phosphorus concentration in the water column Air temperature Optical backscatter Dissolved total and organic nitrogen concentrations in the water column Transmittance and attenuance of the water column Nitrate concentration parameters in the water column Vertical spatial coordinates Chlorophyll pigment concentrations in water bodies Salinity of the water column Visible waveband radiance and irradiance measurements in the water column Density of the water column Air pressure Dissolved metal concentrations in the water column Nitrite concentration parameters in the water column Silicate concentration parameters in the water column Temperature of the water column Bathymetry and Elevation Experiment state variables Dissolved oxygen parameters in the water column Atmospheric humidity Particulate total and organic carbon concentrations in the water column SeaDataNet Parameter Discovery Vocabulary 2023-12-12 revision Meteorological geographical features Hydrography Atmospheric conditions Geographical grid systems Elevation Habitats and biotopes Oceanographic geographical features Coordinate reference systems GEMET - INSPIRE themes, version 1.0 2009-07-31 revision Natural Environment Research Council Designated Data Centres Marine Environmental Data and Information Network data.gov.uk MEDIN metadata record availability 2012-01-11 revision unknown SeaVoX Vertical Co-ordinate Coverages 2020-05-21 revision otherRestrictions No limitations apply Data are freely available to all following agreement to the terms and conditions of a Data Licence otherRestrictions Usage restrictions are specified in the terms of the licence English elevation biota environment oceans location geoscientificInformation climatologyMeteorologyAtmosphere -0.217 36.00 50.333 82.00 SeaVoX water bodies 2025-08-07 revision North Sea SeaVoX water bodies 2025-08-07 revision Arctic Ocean SeaVoX water bodies 2025-08-07 revision Barents Sea SeaVoX water bodies 2025-08-07 revision Norwegian Sea 2023-07-09 2023-08-12 Binary Text or Plaintext https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/25a19bf8-635a-c8d8-e063-7086abc07ccd/ Published dataset - doi:10.5285/25a19bf8-635a-c8d8-e063-7086abc07ccd Rynders S., Hopkins J., Mahaffey C. (2025). Meteorological, optical, sea surface hydrography, and accompanying navigational and bathymetric data (10 minute averages) from the North Sea, Norwegian Sea, and Barents Sea on cruise DY167 (GApr19), July-August 2023 NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/25a19bf8-635a-c8d8-e063-7086abc07ccd download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/3bda959d-9b1f-7486-e063-7086abc01534/ Published dataset - doi:10.5285/3bda959d-9b1f-7486-e063-7086abc01534 Mahaffey C., Lohan M., Norman L., Hopkins J., Berridge C. (2025). Nitrate+nitrite, phosphate, silicate, chlorophyll a, Fv:Fm data from nutrient addition incubation experiments during cruise DY167 in the Barents Sea, July-August 2023 NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/3bda959d-9b1f-7486-e063-7086abc01534 download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/48e39c93-2405-99f3-e063-7086abc003fa/ Published dataset - doi:10.5285/48e39c93-2405-99f3-e063-7086abc003fa Mahaffey C., Fisher B.J., Wrightson L., Hopkins J., Arrowsmith C., Sanders R.N.C., Meredith M.P., Barton B.I., Henderson P., Rynders S. (2026). Stainless Steel CTD water column samples (macronutrients, chlorophyll-a, particulate carbon, C-fixation, d18O) and upcast sensor measurements (temperature, salinity, oxygen, optical backscatter, beam transmittance and attenuation, PAR, fluorescence) from cruise DY167 (GApr19), July-August 2023 NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/48e39c93-2405-99f3-e063-7086abc003fa download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/48c1d94c-1647-8717-e063-7086abc0f520/ Published dataset - doi:10.5285/48c1d94c-1647-8717-e063-7086abc0f520 Lohan M., Hawley R., Flanagan O., Mahaffey C., Norman L., Hopkins J., Barton B.I., Henderson P., Rynders S. (2026). Titanium CTD water column samples (macronutrients, chlorophyll-a, trace elements) and upcast sensor measurements (temperature, salinity, oxygen, optical backscatter, beam transmittance and attenuation, PAR, fluorescence) from the Norwegian and Barents Sea on cruise DY167 (GApr19), July-August 2023 NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/48c1d94c-1647-8717-e063-7086abc0f520 download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/48d50e6a-e137-e1e3-e063-7086abc09a72/ Published dataset - doi:10.5285/48d50e6a-e137-e1e3-e063-7086abc09a72 Mahaffey C., Norman L., Fisher B.J., Wrightson L., Lohan M., Hawley R., Flanagan O., Hopkins J., Rynders S., Arrowsmith C., Sanders R.N.C., Meredith M.P. (2026). Underway biogeochemical samples data (macronutrients, chlorophyll-a, dissolved trace elements, particulate carbon, carbon fixation, d18O) and water mass fractions from a towfish at 3 m in the Norwegian and Barents Sea on cruise DY167 (GApr19), July-August 2023 NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/48d50e6a-e137-e1e3-e063-7086abc09a72 download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/4c1d29b9-ae76-6619-e063-7086abc01768/ Published dataset - doi:10.5285/4c1d29b9-ae76-6619-e063-7086abc01768 Barton B.I., Hopkins J., Henderson P., Rynders S. (2026). Trace metal free CTD water column profiles (temperature, salinity, dissolved oxygen, optical backscatter, beam transmittance and attenuation, PAR, pH, and chlorophyll-a fluorescence) collected in the Norwegian and Barents Sea in July-August 2023 on cruise DY167 (GEOTRACES GApr19). NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/4c1d29b9-ae76-6619-e063-7086abc01768 download https://www.bodc.ac.uk/data/published_data_library/catalogue/10.5285/4c1edb44-81e5-b3ad-e063-7086abc0ce83/ Published dataset - doi:10.5285/4c1edb44-81e5-b3ad-e063-7086abc0ce83 Barton B.I., Hopkins J., Henderson P., Rynders S. (2026). Stainless steel CTD water column profiles (temperature, salinity, dissolved oxygen, optical backscatter, beam transmittance and attenuation, PAR, chlorophyll-a fluorescence ) collected in the Norwegian and Barents Sea in July-August 2023 on cruise DY167 (GEOTRACES GApr19). NERC EDS British Oceanographic Data Centre NOC doi: 10.5285/4c1edb44-81e5-b3ad-e063-7086abc0ce83 download dataset 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 publication BODC protocols are based on the Open Archival Information System (OAIS) model enabling BODC to iterate towards compliance with the on-going evolution and development of community requirements including FAIR (Findable,Accessible,Interoperable,Reusable), TRUST (Transparency, Responsibility, User community, Sustainability, Technology) and CARE (Collective Benefit, Authority to Control, Responsibility, Ethics). Data managers quality assure submissions and assemble the metadata necessary for curation. Submissions (as received) are placed in a long-term accession and stored in triplicate across multiple sites. Appropriate data are transferred into a standard internal format with source variable names mapped to controlled vocabularies, documentation assembled, and metadata loaded into BODC databases. Access to these data is through direct request, the BODC website and through partner repositories such as SeaDataNet. Access control is attained by assigning a data policy to each set of data and this policy is used to administer access when data are requested. Discovery metadata is aligned with EU INSPIRE (through MEDIN) and SeaDataNet community standards. Data are converted to open community formats including Ocean Data View ASCII and SeaDataNet NetCDF, with data described using terms from the NERC vocabulary server. BODC submission agreements are documented on the BODC website and customer service is assured with a dedicated requests team that serve data following local regulations including General Data Protection Regulation (GDPR) 2018 and Environmental Information Regulations (EIR) 2004. true This dataset was created by scientists for the NERC project titled Nitrogen fixation in the Arctic Ocean, N-ARC, grant reference numbers: NE/T000570/1 and NE/T001240/1. Downcast CTD sensor data were binned to 1 decibar, whilst the upcast data were averaged 5 seconds around the time of bottle firing. The sensor data were calibrated using discrete samples measurements where possible. Samples measurements were analysed following standard laboratory practices for depending on the property of interest. The underway data were processed in 10-minute means. Following in-house quality control procedures, the data were then submitted to the British Oceanographic Data Centre (BODC) for long-term archive and data publication in the BODC Published Data Library.Instrument(s) used to collect data: fluorometers; radiometers; optical backscatter sensors; atmospheric radiometers; salinity sensor; autoanalysers; inductively-coupled plasma mass spectrometers; isotope ratio mass spectrometers; nutrient analysers; CTD; transmissometers; discrete water samplers; water body temperature sensor; dissolved gas sensors; meteorological packages.