The exact column name as it appeared in the raw file before any cleaning.The variable’s data type (text, numeric, timestamp, etc.) after cleaning.The standardized, machine‑friendly name produced following data best practices, for e.g., using the CSV Studio’s header cleaning function. Used in the final dataset.A human‑readable name. Helps non‑technical users understand the variable.The physical units associated with the variable (e.g., m, PSU, °C).The description supplied by the original data provider explaining what the variable represents.Standardized scientific term selected from an authoritative vocabulary (e.g., BODC, CF). Ensures consistent meaning across datasets.Link to standardized scientific term and definition.Any notes about how the variable was processed or derived.Extracted from the header or assigned manually.The medium from which the measurement was taken (e.g., water, air, sediment). Extracted from the header or assigned manually.Whether the value is a direct measurement or a calculated value.Any statistical operation applied to the variable (e.g., mean, max, min). “none” if no statistic was applied. CruisetextcruiseCruiseThe name or identifier of the research cruise during which the CTD cast was collected.SeawateractualNone StationtextstationStationThe name or identifier of the sampling site at which the CTD cast was collected.SeawateractualNone Timestamp (UTC)numerictimestamp_utcDate and TimeUTCThe combined date and time of the measurement in Coordinated Universal Time.UT_ISO8601http://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/SeawateractualNone Year (UTC)timestampyear_utcYearUTCYear of the measurement in Coordinated Universal Time.Yearshttp://vocab.nerc.ac.uk/collection/P06/current/UYRS/SeawateractualNone Month (UTC)timestampmonth_utcMonthUTCMonth of the measurement in Coordinated Universal Time.Monthhttp://vocab.nerc.ac.uk/collection/P01/current/MNTHXXXX/SeawateractualNone Day (UTC)timestampday_utcDayUTCDay of the measurement in Coordinated Universal Time.Dayhttp://vocab.nerc.ac.uk/collection/P01/current/DAYXXXXX/SeawateractualNone Hour (UTC)timestamphour_utcHourUTCHour of the measurement in Coordinated Universal Time.Hourshttp://vocab.nerc.ac.uk/collection/P06/current/UHOR/SeawateractualNone Minute (UTC)timestampminute_utcMinuteUTCMinute of the measurement in Coordinated Universal Time.Minuteshttp://vocab.nerc.ac.uk/collection/P06/current/UMIN/SeawateractualNone Second (UTC)timestampsecond_utcSecondUTCSecond of the measurement in Coordinated Universal Time.Secondshttp://vocab.nerc.ac.uk/collection/P06/current/UTBB/SeawateractualNone Latitude In [Degrees North]timestamplatitude_in_degrees_northLatitudeDegrees NorthThe latitude at the start of the cast.Lathttp://vocab.nerc.ac.uk/collection/P01/current/ALATZZ01/SeawateractualNone Longitude In [Degrees East]numericlongitude_in_degrees_eastLongitudeDegrees EastThe longitude at the start of the cast.Lonhttp://vocab.nerc.ac.uk/collection/P01/current/ALONZZ01/SeawateractualNone Latitude Bottom [Degrees North]numericlatitude_bottom_degrees_northLatitude BottomDegrees NorthLatitude where the CTD reached its deepest point.SeawateractualNone Longitude Bottom [Degrees East]numericlongitude_bottom_degrees_eastLongitude BottomDegrees EastLongitude where the CTD reached its deepest point.SeawateractualNone Bot. Depth [m]numericbot_depth_mBottom DepthmThe depth of the seafloor (bottom depth) at the station.BATHhttp://vocab.nerc.ac.uk/collection/P09/current/BATH/SeawateractualNone Pressure, Strain Gauge [db]numericpressure_dbWater PressuredbThe measured pressure in decibars from the CTD’s strain gauge pressure sensor.Pres_Zhttp://vocab.nerc.ac.uk/collection/P01/current/PRESPR01/SeawateractualNone Depth [salt water, m], using lat = 64.4264numericdepth_mDepthmDepth of the CTD in meters derived from pressure using salt water equations.DEPHhttp://vocab.nerc.ac.uk/collection/P09/current/DEPH/using lat = 64.4264SeawateractualNone Conductivity [mS/cm]numericconductivity_ms_per_cmConductivitymS/cmConductivity of seawater measured by the CTD, used to calculate salinity.CTDCondhttp://vocab.nerc.ac.uk/collection/P01/current/CNDCST01/SeawateractualNone Salinity, Practical [PSU]numericsalinity_psuPractical SalinityPSUPractical Salinity calculated from conductivity, temperature, and pressure.CTDSalhttp://vocab.nerc.ac.uk/collection/P01/current/SSALST01/SeawateractualNone Temperature [ITS-90, deg C]numerictemperature_deg_cWater Temperaturedeg CWater temperature measured by the CTD and reported on the ITS-90 temperature scale.WC_temp_CTDhttp://vocab.nerc.ac.uk/collection/P01/current/TEMPS901/ITS-90 calibration.SeawateractualNone Potential Temperature [ITS-90, deg C]numericpotential_temperature_deg_cPotential Temperaturedeg CTemperature the water parcel would have if moved adiabatically to surface (0 dbar).WC_Potemphttps://vocab.nerc.ac.uk/collection/P01/current/POTMCV01/ITS-90 calibration.SeawateractualNone Density [kg/m^3]numericdensity_kg_per_m_3Densitykg/m^3In-situ density of seawater calculated from temperature, salinity, and pressure.sea_water_densityhttp://vocab.nerc.ac.uk/collection/P07/current/CFSN0393/SeawateractualNone Density [sigma-theta, kg/m^3]numericdensity_sigma_theta_kg_per_m_3Potential Density Anamolykg/m^3Potential density anomaly, i.e. the density of a seawater sample when it is moved to the sea surface with its pressure effects removed, calculated as density referenced to 0 dbar minus 1000 kg/m³.SigThetahttp://vocab.nerc.ac.uk/collection/P01/current/SIGTPR01/SeawateractualNone Specific Volume Anomaly [10^-8 m^3/kg]numericspecific_volume_anomaly_10_8_m_3_per_kgSpecific Volume Anomaly10^-8 m^3/kgDifference between the specific volume of seawater and that of standard seawater.SeawateractualNone Oxygen, SBE 43 [ml/l], WS = 2numericoxygen_ml_per_lOxygen (Volume)ml/lDissolved oxygen concentration measured by the SBE43 sensor.WC_dissO2_uncalibhttp://vocab.nerc.ac.uk/collection/P01/current/DOXYSU01/SBE 43 sensor, WS=2SeawateractualNone Oxygen, SBE 43 [umol/kg], WS = 2numericoxygen_umol_per_kgOxygen (Mass-based)umol/kgDissolved oxygen concentration measured by the SBE43 sensor.WC_dissO2/kg_uncalib_SBE43https://vocab.nerc.ac.uk/collection/P01/current/DOXYUCKG/SBE 43 sensor, WS=3SeawateractualNone Oxygen, SBE 43 [% saturation], WS = 2numericoxygen_percent_saturationOxygen (Saturation)% saturationPercent of oxygen saturation relative to equilibrium with the atmosphere.O2_Sat_SBE43https://vocab.nerc.ac.uk/collection/P01/current/OXYSSU01/SBE 43 sensor, WS=4SeawateractualNone Fluorescence, WET Labs CDOM [mg/m^3]numericfluorescence_cdom_mg_per_m_3CDOM Flourescencemg/m^3Colored Dissolved Organic Matter fluorescence signal (CDOM concentration proxy).CDOM_fluor_WETLabshttps://vocab.nerc.ac.uk/collection/P01/current/CCOMD002/WET Labs CDOM sensorSeawateractualNone Fluorescence, WET Labs ECO-AFL/FL [mg/m^3]numericfluorescence_chlorophyll_a_mg_per_m_3Chlorophyll-a Flourescencemg/m^3Chlorophyll-a fluorescence from a WET Labs ECO fluorometer.chl-a_water_ISfluor_manufctrcal_sensor1http://vocab.nerc.ac.uk/collection/P01/current/CPHLPM01/WET Labs ECO-AFL/FL sensorSeawateractualNone PAR/Irradiance, Biospherical/Licor [umol photons/m^2/sec]numericpar_per_irradiance_umol_photons_per_m_2_per_secPhotosynthetically Active Radiationumol photons/m^2/secPhotosynthetically Active Radiationdownwelling_photosynthetic_photon_flux_in_sea_waterhttps://vocab.nerc.ac.uk/collection/P07/current/CFSN0676/Biospherical/Licor sensorSeawateractualNone Beam Transmission, WET Labs C-Star [%]numericbeam_transmission_percentBeam Transmission%The percentage of light that remains after passing through the C-Star’s fixed-length optical path.Trans_Red_25cmhttps://vocab.nerc.ac.uk/collection/P01/current/POPTDR01/WET Labs C-Star sensorSeawateractualNone Beam Attenuation, WET Labs C-Star [1/m]numericbeam_attenuation_1_per_mBeam Attenuation1/mThe beam attenuation coefficient derived from the C-Star transmissometer signal.RedPWCorrhttps://vocab.nerc.ac.uk/collection/P01/current/ATTNZS01/WET Labs C-Star sensorSeawateractualNone