Source: \NC\SBE_CTPrecorders.nc Format: classic Global Attributes: title = 'Physical oceanography data from the Jan Mayen Channel mooring during the NORSE experiment, 26 October 2022 – 19 November 2023' authors = 'Fer, Ilker; Brakstad, Ailin' summary = 'This data file is a part of the data set from the Jan Mayen Channel mooring, collected as a part of the Northern Ocean Rapid Surface Evolution (NORSE) experiment. The data file includes 5-min averaged temperature, salinity and pressure records from Sea-Bird Scientific (SBE) instruments. A full instrument list and further details are provided in the comments. NORSE is an Office of Naval Research Departmental Research Initiative focusing on characterizing the key physical parameters and processes that govern the predictability of upper-ocean rapid evolution events occurring in high latitudes. The overall objective of NORSE is to demonstrate improvements in the predictability of the upper ocean physical fields associated with acoustic propagation over the course of the study. Four moorings were deployed across the Jan Mayen Channel to support the NORSE experiment. Two of these moorings formed an acoustic observation system, with acoustic data collection on the southern side of the channel, on the Jan Mayen Ridge, and the acoustic source located on bathymetric rise on the north side of the channel. The other two were oceanographic moorings, one located on the crest of the ridge at 425 m isobath (University of Washington, USA), and the other located on the slope of the Jan Mayen Channel on the 1585 m isobath (University of Bergen, Norway). This data set includes data files from the Jan Mayen Channel mooring instruments. The Jan Mayen Channel mooring was deployed from NRV Alliance during the NORSE 2022 fall cruise and recovered from RV Kronprins Haakon during the NORSE 2023 fall cruise. The data set covers the period from 26 October 2022 14:25 to 19 November 2023 12:10, and includes time series of ocean temperature, salinity and currents. The Norwegian contribution to the NORSE program was supported by the Office of Naval Research Global, award number N62909-22-1-2023.' keywords = 'GCMDLOC:Ocean >North Atlantic Ocean, GCMDSK:Earth Science > Oceans > OCEAN TEMPERATURE > OCEAN TEMPERATURE PROFILES, GCMDSK:Earth Science > Oceans > SALINITY/DENSITY > OCEAN SALINITY > OCEAN SALINITY PROFILES, GCMDPROV:ACADEMIC > U-BERGEN/GEOPH > Geophysical Institute, University of Bergen > http://www.uib.no/gfi/, Jan Mayen Channel, oceanography, hydrography' type = 'Time series of temperature, salinity and pressure' data_type = 'Sea Bird Scientific recorders' id = 'DOI:10.21335/NMDC-683103695 ' naming_authority = 'The Norwegian Marine Data Centre, https://nmdc.no/' history = 'Version 1' source = 'Sea-Bird C/T/P loggers' platform = 'mooring' processing_level = 'quality controlled' comment = 'The data are from Sea-Bird Scientific (SBE) instruments: MicroCats (unpumped SBE37) and temperature loggers, SBE39 and SBE56. Instrument type, serial number, target depth (Z) and the variables measured are listed below. T is temperature, C is conductivity and P is pressure. Instr || SN || Z(m) || Variables SBE56 || 1334 || 137 || T SBE56 || 1335 || 150 || T SBE37 || 6017 || 159 || T,P,C SBE56 || 1331 || 172 || T SBE56 || 1337 || 185 || T SBE56 || 1332 || 198 || T SBE37 || 5448 || 211 || T,P,C SBE56 || 1339 || 236 || T SBE37 || 6018 || 261 || T,P,C SBE56 || 1333 || 286 || T SBE56 || 1341 || 312 || T SBE56 || 1338 || 337 || T SBE37 || 7334 || 362 || T,C SBE56 || 1948 || 388 || T SBE39 || 3251 || 415 || T,P SBE37 || 7222 || 540 || T,P,C SBE56 || 1343 || 649 || T SBE56 || 1345 || 758 || T SBE56 || 1947 || 866 || T SBE39 || 3282 || 1080 || T,P SBE37 || 7336 || 1287 || T,C SBE37 || 4096 || 1388 || T,C SBE37s and SBE39s sampled every 5 min and SBE56s measured at 1 min intervals, all starting from 15 Oct 2022 0900 UTC. The data were downloaded, converted and exported using the manufacturers’ standard software, and then time averaged to a common 5-min time array.All SBE C/T/P instruments measured as scheduled throughout the yearlong deployment, apart from one SBE37 (serial number 7222). This sensor had a malfunctioning pressure sensor after 19 Dec 2022 1215 UTC, affecting the salinity. The salinity was recalculated using target pressure.Constant offset corrections were applied to salinity after comparing to shipboard CTD profiles. No correction to temperature was necessary.SN || PSAL offset 6017 || 0.011 5448 || 0.019 6018 || 0.036 7334 || 0.036 7222 || 0.022 7336 || 0.031 4096 || 0.043 Temperature and pressure records were free from outliers and spikes. From the salinity records outliers were removed by imposing instrument dependent hard limits by inspecting the time series, and then despiked. The resulting records were inspected and short segments of suspect data (time ranges detected manually) were replaced with NaNs. The data file also includes the original salinity record (PSAL_mean), before quality screening, despiking and offset correction, for reference.' acknowledgement = 'The Norwegian contribution to the NORSE program was supported by the Office of Naval Research Global, award number N62909-22-1-2023. We thank Helge Bryhni for his support with mooring design and logistics, and the captain, crew, and NORSE participants for their assistance during the deployment and recovery cruises. We thank Richard Lenhart, Jason Sagers, and Eli Willard for their assistance with mooring operations, Erika Giorgi for her help with data retrieval, Megan Ballard and Jen MacKinnon for their leadership, and Leah Johnson and Harper Simmons for discussions on data processing and quality control.' citation = 'Fer, Ilker; Brakstad, Ailin (2025), Physical oceanography data from the Jan Mayen Channel mooring during the NORSE experiment, 26 October 2022 – 19 November 2023 [dataset] Norwegian Marine Data Centre https://doi.org/10.21335/NMDC-683103695' license = 'http://creativecommons.org/licenses/by/4.0/' Conventions = 'CF-1.6, ACDD-1.3' metadata_conventions = 'Unidata Dataset Discovery v1.3' standard_name_vocabulary = 'CF Standard Name Table v87' platform_vocabulary = 'https://vocab.nerc.ac.uk/collection/L06/current/' keywords_vocabulary = 'GCMDSK:GCMD Science Keywords:https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords, GCMDPROV:GCMD Providers:https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/providers, GCMDLOC:GCMD Locations:https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/locations' area = 'North Atlantic Ocean, Jan Mayen Channel' latitude = 70.8692 longitude = -6.415 sea_floor_depth_below_sea_level = 1585 geospatial_lat_min = 70.8692 geospatial_lat_max = 70.8692 geospatial_lat_units = 'degrees_north' geospatial_lat_resolution = 'seconds' geospatial_lon_min = -6.415 geospatial_lon_max = -6.415 geospatial_lon_units = 'degrees_east' geospatial_lon_resolution = 'seconds' geospatial_vertical_min = 137 geospatial_vertical_max = 1388 geospatial_vertical_positive = 'down' geospatial_vertical_units = 'meter' geospatial_vertical_resolution = 'centimeter' time_coverage_start = '2022-10-26T14:25:00Z' time_coverage_end = '2023-11-19T12:10:00Z' time_coverage_duration = 'P1Y0M23DT21H45M0S' date_created = '2025-09-19T11:55:11Z' date_modified = '2023-12-19T09:05:00Z' date_metadata_modified = '2025-09-19T11:55:11Z' file_creation_time = '2025-09-19T11:55:11Z' data_mode = 'D' creator_name = 'Ilker Fer' creator_email = 'ilker.fer@uib.no' creator_url = 'https://www.uib.no/gfi' institution = 'Geophysical Institute, University of Bergen' principal_investigator = 'Fer, Ilker' principal_investigator_ORCID = '0000-0002-2427-2532' contact = 'ilker.fer@uib.no' project_name = 'NORSE' publisher_name = 'The Norwegian Marine Data Centre' publisher_email = 'datahjelp@hi.no' publisher_url = 'https://nmdc.no/' Dimensions: TIME = 112006 LATITUDE = 1 LONGITUDE = 1 INSTR_TARGETDEPTH = 22 PSAL_TARGETDEPTH = 7 PRES_TARGETDEPTH = 6 TEMP_TARGETDEPTH = 22 Variables: TIME Size: 112006x1 Dimensions: TIME Datatype: double Attributes: standard_name = 'time' units = 'Days since 2022-01-01T00:00:00Z' axis = 'T' coverage_content_type = 'coordinate' long_name = 'Decimal day' comment = '1 January noon is day 0.5.' LATITUDE Size: 1x1 Dimensions: LATITUDE Datatype: double Attributes: standard_name = 'latitude' long_name = 'Measurement position, latitude' units = 'degree_north' axis = 'Y' coverage_content_type = 'coordinate' reference = 'WGS84' LONGITUDE Size: 1x1 Dimensions: LONGITUDE Datatype: double Attributes: standard_name = 'longitude' long_name = 'Measurement position, longitude' units = 'degree_east' axis = 'X' coverage_content_type = 'coordinate' reference = 'WGS84' INSTR_TARGETDEPTH Size: 22x1 Dimensions: INSTR_TARGETDEPTH Datatype: double Attributes: standard_name = 'depth' units = 'm' positive = 'down' axis = 'Z' reference = 'sea_level' long_name = 'nominal depth of the instruments' comment = 'Instrument target depth is calculated from mooring diagram and time-mean depth from all instruments equipped with a reliable pressure sensor, converted to sea water depth using the UNESCO 1983 algorithm and the mooring latitude. Time-varying pressure or depth of instruments can be found in the PRES or INSTR_DEPTH variable when available.' PSAL_TARGETDEPTH Size: 7x1 Dimensions: PSAL_TARGETDEPTH Datatype: double Attributes: standard_name = 'depth' units = 'm' positive = 'down' axis = 'Z' reference = 'sea_level' long_name = 'nominal depth of the instruments with salinity measurements' comment = 'Instrument target depth is calculated from mooring diagram and time-mean depth from all instruments equipped with a reliable pressure sensor, converted to sea water depth using the UNESCO 1983 algorithm and the mooring latitude. Time-varying pressure or depth of instruments can be found in the PRES or INSTR_DEPTH variable when available.' PRES_TARGETDEPTH Size: 6x1 Dimensions: PRES_TARGETDEPTH Datatype: double Attributes: standard_name = 'depth' units = 'm' positive = 'down' axis = 'Z' reference = 'sea_level' long_name = 'nominal depth of the instruments with pressure measurements' comment = 'Instrument target depth is calculated from mooring diagram and time-mean depth from all instruments equipped with a reliable pressure sensor, converted to sea water depth using the UNESCO 1983 algorithm and the mooring latitude. Time-varying pressure or depth of instruments can be found in the PRES or INSTR_DEPTH variable when available.' TEMP_TARGETDEPTH Size: 22x1 Dimensions: TEMP_TARGETDEPTH Datatype: double Attributes: standard_name = 'depth' units = 'm' positive = 'down' axis = 'Z' reference = 'sea_level' long_name = 'nominal depth of the instruments with temperature measurements' comment = 'Instrument target depth is calculated from mooring diagram and time-mean depth from all instruments equipped with a reliable pressure sensor, converted to sea water depth using the UNESCO 1983 algorithm and the mooring latitude. Time-varying pressure or depth of instruments can be found in the PRES or INSTR_DEPTH variable when available.' TEMP Size: 22x112006 Dimensions: TEMP_TARGETDEPTH,TIME Datatype: double Attributes: standard_name = 'sea_water_temperature' units = 'degree_Celsius' coordinates = 'TIME LATITUDE LONGITUDE TEMP_TARGETDEPTH' long_name = 'sea water temperature in-situ ITS-90 scale' coverage_content_type = 'physicalMeasurement' comment = 'measured by the temperature sensors on SBE instruments' PRES Size: 6x112006 Dimensions: PRES_TARGETDEPTH,TIME Datatype: double Attributes: standard_name = 'sea_water_pressure' units = 'decibar' long_name = 'Sea water pressure, equals 0 at sea-level' coordinates = 'TIME LATITUDE LONGITUDE PRES_TARGETDEPTH' coverage_content_type = 'physicalMeasurement' comment = 'measured by the pressure sensors on SBE instruments' COND Size: 7x112006 Dimensions: PSAL_TARGETDEPTH,TIME Datatype: double Attributes: standard_name = 'sea_water_electrical_conductivity' units = 'S m-1' coordinates = 'TIME LATITUDE LONGITUDE PSAL_TARGETDEPTH' long_name = 'Sea water electrical conductivity' comment = 'measured by the conductivity sensor on SBE instruments' PSAL Size: 7x112006 Dimensions: PSAL_TARGETDEPTH,TIME Datatype: double Attributes: standard_name = 'sea_water_practical_salinity' units = '1' coordinates = 'TIME LATITUDE LONGITUDE PSAL_TARGETDEPTH' long_name = 'Sea water practical salinity on the PSS-78 scale' coverage_content_type = 'physicalMeasurement' comment = 'calculated in practical salinity scale using conductivity, pressure and temperature. Data are quality screened, despiked, interpolated and offset corrected. Corrections arelisted in the global comment attribute.' PSAL_meas Size: 7x112006 Dimensions: PSAL_TARGETDEPTH,TIME Datatype: double Attributes: standard_name = 'sea_water_practical_salinity' units = '1' coordinates = 'TIME LATITUDE LONGITUDE PSAL_TARGETDEPTH' long_name = 'Sea water practical salinity as measured by the instrument' coverage_content_type = 'physicalMeasurement' comment = 'Not cleaned, interpolated or corrected. Calculated in practical salinity scale using conductivity, pressure and temperature.' >>