14:I[71133,["4507","static/chunks/e2799680-446c489506865058.js","7665","static/chunks/7665-81c5407bc4489ff9.js","8500","static/chunks/8500-e4dd1cb1bb626827.js","9753","static/chunks/9753-028c0a26aa71f2d4.js","8437","static/chunks/8437-a09d0b83fcec76af.js","4557","static/chunks/4557-64c5efa221bc528f.js","947","static/chunks/947-410627998426400f.js","5357","static/chunks/5357-6142894e88cb7da2.js","8382","static/chunks/app/dataset/%5Bid%5D/data/view/page-177ea8adea7aed86.js"],"default"] 15:T818,

Event Log

The cruise track included six process stations, four of which comprised a transect along 36 N from the mid Sargasso Sea inshore towards Chesapeake Bay, including one in the Gulf Stream (PS1 - PS4). The other two stations (PS5, PS6) were inside Chesapeake Bay. Experimental manipulations to measure nitrogen (N) cycle processes were carried out at these stations. The sampling strategy was tailored to the process under investigation, e.g., photosynthesis and photochemical processes in surface waters, and depth profiles for most standard rates. Complete depth profiles were measured for nitrification, while CO₂ and nitrogen nutrient (nitrate, ammonium, urea) uptake rates focused on the euphotic zone. One additional short station (PS6) was sampled only for nitrification and nitrate uptake. Nitrous oxide consumption and photochemical production of nitrous oxide were measured in surface waters at PS1-PS5.

CTD/Niskin bottle

A Seabird SBE-911+ was used with 12 30-L Niskin bottles.

Sensors:

Temperature Sensor, SensorID="55"; serial number: 4695
Conductivity Sensor, SensorID="3"; serial number: 0618
Pressure, Digiquartz with TC, SensorID="45"; serial number: 0444
Temperature Sensor, SensorID="55"; serial number: 4130
Conductivity Sensor, SensorID="3"; serial number: 2822
Transmissometer, WET Labs C-Star, SensorID="71"; serial number: 969DR
Fluorometer, WET Labs ECO-AFL/FL, SensorID="20"; serial number: 4028
Altimeter Sensor, SensorID="0"; serial number: 49898
PAR/Irradiance, Biospherical/Licor, SensorID="42"; serial number: 70709
Oxygen, SBE 43, SensorID="38"; serial number: 1230
Oxygen, SBE 43, 2; SensorID="38"; serial number: 1648
User Polynomial Sensor, SensorID="61"; serial number: 783
SPAR, Biospherical/Licor, SensorID="51"; serial number: 20121

16:Tffa,This section documents curation actions performed prior to publication review with the submitter, and additional information relevant to understanding and reusing this dataset. It distinguishes changes made to the submitted (meta)data from unresolved issues and/or enhancements that improve future reuse and interoperability. CURATION ACTIONS PERFORMED ON DATA - Loaded EN734_2025_EventLog.xlsx (sheet 1, header row 1) with strings cast strategy, empty string and "nd" set as missing values - Loaded EN734_BottleFilesCombined.xlsx (sheet 1, header row 1), preserving displayed cell formatting, with "", "nd", "N/A" set as missing values, named en734_bottle_files_combined - Created Event column in en734_bottle_files_combined by formatting Cast number as "CTD" plus zero-padded 2-digit cast number - Converted Month/Day/Year/Time columns into CTD_Collection_Datetime_UTC (UTC, ISO 8601 format) - In event log table, combined Lat Deg (N) and Lat Min (N) into temporary lat_dms_temp string, skipping rows where lat was "N/A" - Combined Long Deg (W) and Long Mins (W) into temporary lon_dms_temp string, skipping rows where lon was "N/A" - Converted lat_dms_temp from degrees-decimal_minutes to decimal degrees as Latitude_Event_Log, forcing N directional, skipping missing rows - Converted lon_dms_temp from degrees-decimal_minutes to decimal degrees as Longitude_Event_Log, forcing W directional (negative), skipping missing rows - Fixed two Date typos in event log: "7/224/2025" to "7/24/2025" and "7/27/2-25" to "7/27/2025" - Converted Date + Local Time (in water) into Deploy_Datetime_Local (datetime, "%Y-%m-%dT%H:%M") - Converted Date + UTC time column into Deploy_Datetime_UTC (datetime, UTC, "%Y-%m-%dT%H:%MZ") - Deleted temporary/intermediate columns: Date, Local Time (in water), UTC, Lat Deg (N), Lat Min (N), Long Deg (W), Long Mins (W), lat_dms_temp, lon_dms_temp from event log table - Rounded Latitude_Event_Log and Longitude_Event_Log to 5 decimal places, no trailing zeros - Deleted original Date, Month, Day, Year, Time columns from en734_bottle_files_combined - Renamed Latitude to Latitude_CTD_Collection and Longitude to Longitude_CTD_Collection in bottle files table - Joined event log table (source, keyed on Event, deleted after join) into en734_bottle_files_combined (target, keyed on Event) as full-outer join, pulling in Air Temp (°C), Deploy_Datetime_Local, Deploy_Datetime_UTC, Event, Latitude_Event_Log, Longitude_Event_Log, Notes, Observer, Rosette, Station, Surface Temp (°C) using first-value aggregation - Renamed fields with spaces/special characters for BCO-DMO naming compliance: "Potential T" to Potential_T, "Beam Attenuation" to Beam_Attenuation, "Surface Temp (°C)" to Surface_Temp, "Air Temp (°C)" to Air_Temp - Reordered columns into final logical sequence (Event, CTD_Collection_Datetime_UTC, coordinates, deploy times/coordinates, cast/bottle/CTD parameters, station/environmental/metadata columns) - Renamed Latitude_CTD_Collection to CTD_Collection_Latitude, Longitude_CTD_Collection to CTD_Collection_Longitude, Latitude_Event_Log to Deploy_Latitude, Longitude_Event_Log to Deploy_Longitude - Replaced µ (micro sign) character with "u" in Notes column - Output file as 1005482_v1_en734_event_log_ctd.csv - Loaded 1005482_v1_en734_event_log_ctd_submitter_edits.csv (an adjusted draft provided by the submitter after review of the initial draft), using filename as resource name, treating "" and "nd" as missing values - Removed first draft 1005482_v1_en734_event_log_ctd.csv - Edited cell at row 287, Deploy_Datetime_UTC column, setting value to 2025-08-01T11:20Z - Corrected malformed Deploy_Datetime_UTC value "2025-08-06T011:14Z" to "2025-08-06T11:14Z" via conditional computed field - Output 1005482_v1_en734_event_log_ctd_submitter_edits as 1005482_v1_en734_event_log_ctd.csv CURATION ACTIONS PERFORMED ON METADATA - BCO-DMO's standard metadata entry and text formatting steps were performed. See: https://www.bco-dmo.org/how-to/standard-curation-edits ISSUES POTENTIALLY IMPACTING REUSE -N/A17:T565,This event log was recorded during R/V Endeavor cruise EN734 in the central North Atlantic Ocean, during July and August 2025. The cruise track included six process stations, four of which comprise an offshore transect (PS1, PS2, PS3, PS4) and two of which were inside the lower reaches of Chesapeake Bay (PS5, PS6). Experimental manipulations to measure nitrogen (N) cycle processes were carried out at these stations. The sampling strategy was tailored to the process under investigation, e.g., photosynthesis and photochemical processes in surface waters, and depth profiles for most standard rates. Complete depth profiles were measured for nitrification, while CO2 and nitrogen nutrient (nitrate, ammonium, urea) uptake rates focused on the euphotic zone. One additional short station (PS6) was sampled only for nitrification and nitrate uptake. Nitrous oxide consumption and photochemical production of nitrous oxide were measured in surface waters at PS1-PS5. Zooplankton net tows were carried out at PS1 – PS5. This dataset includes an event log documenting over-the-side sampling activities (date, time, station, position, and observer notes) combined with CTD and Niskin bottle data (depth, temperature, salinity, sigma-theta, dissolved oxygen, beam attenuation, transmission, chlorophyll fluorescence, and PAR) collected at each process station during the cruise.18:Td46,NSF Award Abstract: Nitrous oxide (N2O) is a trace component of Earth’s atmosphere. It is a strong greenhouse gas, whose concentration has been increasing since the industrial revolution, and contributes about 6% to the total greenhouse effect. N2O is also implicated in ozone depletion in the stratosphere. The ocean is a net source of N2O to the atmosphere. N2O is produced and consumed in the ocean by microbes as part of the nitrogen cycle. The conversion of N2O to N2 (dinitrogen gas) is the only known biological sink for N2O and is catalyzed by an enzyme that is strongly inhibited by oxygen, so N2O consumption has been thought to be confined to oxygen-free environments. Thus, it was surprising to find that the genetic capability for N2O consumption was both present and active in the surface ocean, where oxygen is abundant. Experiments showed that surface ocean microbes rapidly consume N2O when oxygen is removed. It appears that the microbes can use N2O as an alternative to oxygen for respiration. Why would it be advantageous to retain this capacity in fully oxygenated surface water? Does this potential N2O consumption constitute an actual sink for N2O, which might reduce the net transfer of N2O from the ocean to the atmosphere? The reduction of nitrous oxide (N2O) to N2 is considered to be an obligately anaerobic process, usually restricted to anoxic environments in water and sediments. Previous work showed that the genes (nosZ) encoding the N2O reductase enzyme were both present and expressed in the surface ocean, and that surface ocean samples rapidly reduce N2O to N2 when oxygen is removed. The nosZ genes in surface waters appear to belong almost exclusively to microbes that do not perform the upstream steps in denitrification – they are facultative N2O respirers. The research proposed here will investigate the factors that might control or stimulate N2O reduction in surface waters and characterize the microbes responsible for the process. Experiments will test the hypothesis that N2O respirers are versatile heterotrophs whose activity is related to organic matter supply and possibly associated with particulate material or linked to in situ primary production. Researchers will perform 15N tracer incubations to measure the rate of N2O reduction and its response to various kinds of organic substrates, including in situ particulate material and fresh phytoplankton exudates. The quantity and community composition of nosZ-containing microbes will be determined using a suite of molecular biological methods – necessary because the nosZ gene is so diverse that previous methods have likely underestimated both its abundance and diversity and may not have identified the main microbes responsible for the process. Draft genomes of nosZ-containing microbes will be characterized to investigate their carbon metabolism and link their lifestyles to organic matter supply or phytoplankton. One field expedition is planned to investigate the significance of N2O reduction in the North Atlantic subtropical gyre. If N2O consumption occurs even at low rates over vast regions of the surface ocean, its impact on the overall N2O budget of the ocean and atmosphere could be large. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.6:["$","$L14",null,{"dataset":{"_id":"1005482","description":"","problem":"","acquisition":"$15","processing":"

Software Version Seasave V 7.27.0.46

The data have been preliminarily processed by the ship’s technician using Sea-Bird recommended default parameters. Raw CTD data were processed using SBEDataProcessing-Win32 software. These files should not be taken as the final processed product for analysis. Reference the Seasoft Data Processing manual for more information. We did not perform additional processing of the data in the bottle files.

\n","bcodmoProcessing":"$16","title":"Event log and CTD/Niskin bottle data collected from R/V Endeavor cruise EN734 in the North Atlantic and Chesapeake Bay from Jul to Aug 2025","nickname":"EN734 event log and CTD/Niskin bottle data","dataUrl":"","currentState":"Final no updates expected","currentStateId":"7","validated":true,"restricted":false,"version":"1","version_date":"2026-09-21T04:00:00.000Z","abstract":"$17","citation":"Ward, B. B. (2026) Event log and CTD/Niskin bottle data collected from R/V Endeavor cruise EN734 in the North Atlantic and Chesapeake Bay from Jul to Aug 2025. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2026-09-21 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.1005482.1 [access date]","citationParts":{"identifier":"doi:10.26008/1912/bco-dmo.1005482.1","versionDate":"2026-09-21","versionId":"1","year":"2026","title":"Event log and CTD/Niskin bottle data collected from R/V Endeavor cruise EN734 in the North Atlantic and Chesapeake Bay from Jul to Aug 2025","authors":"Ward, B. B.","publisher":"Biological and Chemical Oceanography Data Management Office (BCO-DMO)."},"doi":"10.26008/1912/bco-dmo.1005482.1","release_date":null,"field_dataset_location":"North Atlantic (transect along 36 N from 66 W to 74 W) and Chesapeake Bay","temporal_extent":{"start":"2025-07-23T04:00:00.000Z","end":"2025-08-24T04:00:00.000Z"},"temporal":{"resolution":"time:unitDay","type":"time:Interval","start":{"value":"1753243200","label":"2025-07-23"},"end":{"value":"1756008000","label":"2025-08-24"}},"spatial_extent":{"shape":"polygon","center":{"latitude":37.040185,"longitude":-71.36036},"wkt":"POLYGON ((-76.14046 36.23684, -66.58026 36.23684, -66.58026 37.84353, -76.14046 37.84353, -76.14046 36.23684))","north":37.84353,"east":-66.58026,"south":36.23684,"west":-76.14046},"dataset_type":["Cruise Results"],"keywords":["oceans"],"data_files":[{"id":"1007960","title":"1005482_v1_en734_event_log_ctd.csv","url":"https://datadocs.bco-dmo.org/dataset/1005482/file/OJNp07VtE2Gg8L/1005482_v1_en734_event_log_ctd.csv","showTableUrl":"https://www.bco-dmo.org/dataset/1005482/data/view/1007960","description":"Primary data file for dataset ID 1005482, version 1","filename":"1005482_v1_en734_event_log_ctd.csv","bytesize":136908,"checksum":{"value":"dc87c1fb6d19bf72870077fcbaaaff87","Algorithm":{"_id":"190","name":"MD5"}},"mimetype":"text/csv","fileType":{"_id":"192","name":"Comma Separated Values (.csv)"},"isErddap":"","date":"","isPublicDuringEmbargo":false,"primaryDataFile":true,"showTable":true,"restricted":false}],"supplemental_files":[],"roles":[{"role":{"_id":"138","name":"Principal Investigator"},"performedBy":{"_id":"50874","name":"Bess B. Ward"},"performedAtOrganization":{"_id":"61","name":"Princeton University"}},{"role":{"_id":"145","name":"BCO-DMO Data Manager"},"performedBy":{"_id":"924467","name":"Audrey Mickle"},"performedAtOrganization":{"_id":"191","name":"Woods Hole Oceanographic Institution"}}],"deployments":[{"_id":"1007278","name":"EN734","synonyms":[],"dates":{"start":"2025-07-22T00:00:00.000Z","end":"2025-08-14T00:00:00.000Z"},"platform":{"_id":"53992","name":"R/V Endeavor"},"chiefScientists":[{"id":"50874","name":"Bess B. Ward","role":"Chief Scientist"}]}],"funding":[{"_id":"963458","name":"OCE-2342493","fundingSource":{"_id":"355","name":"NSF Division of Ocean Sciences"},"url":"https://www.nsf.gov/awardsearch/show-award?AWD_ID=2342493"}],"instruments":[{"_id":"1007480","name":"Altimeter","description":"Altimeter Sensor, SensorID=\"0\"; serial number: 49898","type_id":"457","type_name":"Altimeter","type_desc":"An instrument that measures height above a fixed surface. The data can be used to map ocean-surface topography and generate gridded surface height fields.","type_acronym":"Altimeter"},{"_id":"1007485","name":"Conductivity Sensor","description":"Conductivity Sensor, SensorID=\"3\"; serial number: 0618\nConductivity Sensor, SensorID=\"3\"; serial number: 2822","type_id":"417","type_name":"CTD - profiler","type_desc":"The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.\r\n\r\nThis term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.","type_acronym":""},{"_id":"1007302","name":"CTD: Seabird SBE-911+","description":"CTD Data: A Seabird SBE-911+ was used with 12 30-L Niskin bottles.. \nSensors: \n\nTemperature Sensor SensorID=\"55\"; serial number: 4695\nConductivity Sensor SensorID=\"3\"; serial number: 0618\nPressure, Digiquartz with TC SensorID=\"45\"; serial number: 0444\nTemperature Sensor SensorID=\"55\"; serial number: 4130\nConductivity Sensor SensorID=\"3\"; serial number: 2822\nTransmissometer, WET Labs C-Star WET_LabsCStar SensorID=\"71\"; serial number: 969DR\nFluorometer, WET Labs ECO-AFL/FL FluoroWetlabECO_AFL_FL_Sensor SensorID=\"20\"; serial number: 4028\nAltimeter Sensor SensorID=\"0\"; serial number: 49898\nPAR/Irradiance, Biospherical/Licor; PAR_BiosphericalLicorChelseaSensor SensorID=\"42\"; serial number: 70709\nOxygen, SBE 43; SensorID=\"38\"; serial number: 1230\nOxygen, SBE 43, 2; SensorID=\"38\"; serial number: 1648\nUser Polynomial Sensor SensorID=\"61\"; serial number: 783\nSPAR, Biospherical/Licor SPAR_Sensor SensorID=\"51\"; serial number: 20121","type_id":"591","type_name":"CTD Sea-Bird SBE 911plus","type_desc":"The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics","type_acronym":"CTD SBE 911plus"},{"_id":"1007481","name":"PAR/Irradiance, Biospherical/Licor","description":"PAR/Irradiance, Biospherical/Licor, SensorID=\"42\"; serial number: 70709","type_id":"480","type_name":"LI-COR Biospherical PAR Sensor","type_desc":"The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.","type_acronym":"LI-COR Biospherical PAR"},{"_id":"1007483","name":"SPAR, Biospherical/Licor","description":"SPAR, Biospherical/Licor, SensorID=\"51\"; serial number: 20121","type_id":"480","type_name":"LI-COR Biospherical PAR Sensor","type_desc":"The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known.","type_acronym":"LI-COR Biospherical PAR"},{"_id":"1007441","name":"30-L Niskin bottles","description":"A Seabird SBE-911+ was used with 12 30-L Niskin bottles.","type_id":"413","type_name":"Niskin bottle","type_desc":"A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.","type_acronym":"Niskin bottle"},{"_id":"1007443","name":"Digiquartz with TC","description":"Pressure, Digiquartz with TC, SensorID=\"45\"; serial number: 0444","type_id":"567","type_name":"Pressure Sensor","type_desc":"A pressure sensor is a device used to measure absolute, differential, or gauge pressures. It is used only when detailed instrument documentation is not available.","type_acronym":"Pressure Sensor"},{"_id":"1007482","name":"SBE 43","description":"Oxygen, SBE 43, SensorID=\"38\"; serial number: 1230\nOxygen, SBE 43, 2; SensorID=\"38\"; serial number: 1648","type_id":"552","type_name":"Sea-Bird SBE 43 Dissolved Oxygen Sensor","type_desc":"The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. More information from the manufacturer: https://www.seabird.com/products/sbe-43-dissolved-oxygen-sensor","type_acronym":"SBE-43 DO"},{"_id":"1007478","name":"WET Labs C-Star","description":"Transmissometer, WET Labs C-Star, SensorID=\"71\"; serial number: 969DR","type_id":"491","type_name":"Transmissometer","type_desc":"A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.","type_acronym":"Transmissometer"},{"_id":"1007484","name":"Temperature Sensor","description":"Temperature Sensor, SensorID=\"55\"; serial number: 4695\nTemperature Sensor, SensorID=\"55\"; serial number: 4130","type_id":"647","type_name":"Water Temperature Sensor","type_desc":"General term for an instrument that measures the temperature of the water with which it is in contact (thermometer).","type_acronym":"Water Temp Sensor"},{"_id":"1007479","name":"WET Labs ECO-AFL/FL","description":"Fluorometer, WET Labs ECO-AFL/FL, SensorID=\"20\"; serial number: 4028","type_id":"592","type_name":"Wet Labs ECO-AFL/FL Fluorometer","type_desc":"The Environmental Characterization Optics (ECO) series of single channel fluorometers delivers both high resolution and wide ranges across the entire line of parameters using 14 bit digital processing. The ECO series excels in biological monitoring and dye trace studies. The potted optics block results in long term stability of the instrument and the optional anti-biofouling technology delivers truly long term field measurements.\r\n more information from Wet Labs","type_acronym":"ECO AFL/FL"}],"parameters":[{"_id":"1007445","name":"Event","format":"","frictionlessType":"string","description":"

Event number of event deployment

","units":{"_id":"","name":"unitless"},"type":{"_id":"1683","name":"event code","description":"

an abbreviation code describing the sampling event type and sequence number, e.g. CTD001, TM001, MULVFS_01, MOCNESS_01

"}},{"_id":"1007446","name":"CTD_Collection_Datetime_UTC","format":"%Y-%m-%dT%H:%M:%SZ","frictionlessType":"datetime","description":"

Datetime UTC of the cast/event (source:Ship)

","units":{"_id":"","name":"unitless"},"type":{"_id":"1908","name":"ISO_DateTime_UTC","description":"

Date/Time (UTC) ISO formatted
\nThis standard is based on ISO 8601:2004(E) and takes on any of the following forms:
\n2009-08-30T09:05:00[.xx] (local time)
\n2009-08-30T14:05:00[.xx]Z (UTC time)
\n2009-08-30T14:05:00[.xx]-05:00
\nThe dashes and the colons can be dropped.
\nThe T can also be dropped \"by mutual agreement\", but one needs the trailing Z if the time is UTC.

Sample ISO_datetime_utc:
\n2009-08-30T14:05:00[.xx]Z (UTC time)

Format: YYYY-mm-ddTHH:MM:SS[.xx]Z (UTC time)

"}},{"_id":"1007448","name":"CTD_Collection_Latitude","format":"","frictionlessType":"number","description":"

Latitude of CTD collection, N is positive (source: Ship)

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"1007450","name":"CTD_Collection_Longitude","format":"","frictionlessType":"number","description":"

Longitude of CTD Collection, W is negative (source: Ship)

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datasets as degrees, minutes

"}},{"_id":"1007452","name":"Deploy_Datetime_UTC","format":"%Y-%m-%dT%H:%MZ","frictionlessType":"datetime","description":"

UTC time of event deployment

","units":{"_id":"","name":"unitless"},"type":{"_id":"1009","name":"time_start","description":"

starting time of observation, GMT time, 24 hour clock

"}},{"_id":"1007453","name":"Deploy_Datetime_Local","format":"%Y-%m-%dT%H:%M","frictionlessType":"datetime","description":"

Local time (UTC-4:00) of event deployment

","units":{"_id":"","name":"unitless"},"type":{"_id":"1010","name":"time_start_local","description":"

starting time of observation, local time , 24 hour clock

"}},{"_id":"1007454","name":"Deploy_Latitude","format":"","frictionlessType":"number","description":"

Latitude of deployment, N is positive (source: Ship)

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"730","name":"latitude","description":"

latitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes

"}},{"_id":"1007455","name":"Deploy_Longitude","format":"","frictionlessType":"number","description":"

Longitude of deployment, W is negative (source: Ship)

","units":{"_id":"","name":"decimal degrees"},"type":{"_id":"731","name":"longitude","description":"

longitude, in decimal degrees, East is positive, negative denotes West; Reported in some datasets as degrees, minutes

"}},{"_id":"1007456","name":"Cast","format":"","frictionlessType":"integer","description":"

CTD cast number

","units":{"_id":"","name":"unitless"},"type":{"_id":"761","name":"cast","description":"

cast or profile number

"}},{"_id":"1007457","name":"Bottle","format":"","frictionlessType":"integer","description":"

Niskin bottle number

","units":{"_id":"","name":"unitless"},"type":{"_id":"757","name":"bottle","description":"

water bottle number, generally assigned to a position on a CTD rosette, identifies all samples drawn from a given bottle

"}},{"_id":"1007458","name":"Depth","format":"","frictionlessType":"number","description":"

Depth (source: CTD)

","units":{"_id":"","name":"meters (m)"},"type":{"_id":"808","name":"depth","description":"

Observation/sample depth below the sea surface. Units often reported as: meters, feet.

\nWhen used in a JGOFS/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.

"}},{"_id":"1007460","name":"Sigmatheta","format":"","frictionlessType":"number","description":"

Sigma theta (source: CTD)

","units":{"_id":"","name":"kilograms per cubic meter (kg/m3)"},"type":{"_id":"734","name":"sigma-t","description":"

Sigma-t density, often reported in kg/m^3 - 1000. 'Sigma-t' is density minus 1000 (without the effect of pressure). It is normally calculated from observations of temperature and salinity. (See How do we measure the density of sea water?)

"}},{"_id":"1007461","name":"Salinity","format":"","frictionlessType":"number","description":"

Salinity (source: CTD)

","units":{"_id":"","name":"PSU"},"type":{"_id":"955","name":"sal","description":"

Salinity: The amount (mass or quantity of matter) of salt per amount (volume or mass) of a body of water.

"}},{"_id":"1007462","name":"Temperature","format":"","frictionlessType":"number","description":"

Temperature (source: CTD)

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"733","name":"temperature","description":"

water temperature at measurement depth

"}},{"_id":"1007463","name":"Potential_T","format":"","frictionlessType":"number","description":"

Potential temperature (source: CTD)

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"936","name":"potemp","description":"

potential temperature (International Practical Temperature Scale - 68 ,or 90). When known, the scale will be reported in the units field of the documentation file.

"}},{"_id":"1007464","name":"Pressure","format":"","frictionlessType":"number","description":"

Pressure (source: CTD)

","units":{"_id":"","name":"decibars (dbar)"},"type":{"_id":"732","name":"pressure","description":"

water pressure at measurement; depth reported as pressure; positive number increasing with water depth

"}},{"_id":"1007465","name":"Oxygen","format":"","frictionlessType":"number","description":"

SBE O2 sensor (source: CTD)

","units":{"_id":"","name":"micromoles per liter (µmol/L)"},"type":{"_id":"910","name":"dissolved Oxygen","description":"

dissolved oxygen concentration

"}},{"_id":"1007466","name":"Beam_Attenuation","format":"","frictionlessType":"number","description":"

Beam Attenuation (source: CTD)

","units":{"_id":"","name":"inverse meters (1/m)"},"type":{"_id":"1147","name":"beam_cp","description":"

attenuation (loss of light) of a narrow, well collimated beam of light; beam attenuation due to particles; the particulate beam attenuation coefficient (cp)

"}},{"_id":"1007467","name":"Transmission","format":"","frictionlessType":"number","description":"

Transmission (source: CTD)

","units":{"_id":"","name":"percent (%)"},"type":{"_id":"1013","name":"transmission","description":"

light transmission, as percent

"}},{"_id":"1007468","name":"ChlFluor","format":"","frictionlessType":"number","description":"

Fluorescence (source: CTD)

","units":{"_id":"","name":"milligrams per cubic meter (mg/m3)"},"type":{"_id":"835","name":"fluorescence","description":"

Fluorescence. Indirect measure of pigment concentration.

Units and collection method may vary. Units often reported in milligrams/meter^3 (mg/m3) or micromoles per liter (ug/L). Sometimes reported after being calibrated against extracted pigment concentrations.

In JGOFS/GLOBEC projects fluorescence is measured from CTD instrument sensor.

"}},{"_id":"1007469","name":"Par","format":"","frictionlessType":"number","description":"

Photosynthetically active radiation Biospherical /Licor sensor

","units":{"_id":"","name":"µmol photon per meter squared per second (µmol photons/m2/sec)"},"type":{"_id":"913","name":"PAR","description":"

Photosynthetically Available [Active] Radiation; downwelling irradiance; units vary: often microEinsteins/meter^2/second, microEinsteins/centimeter^2/second, or micromoles photons/meter/second

"}},{"_id":"1007470","name":"Station","format":"","frictionlessType":"string","description":"

Station designation

","units":{"_id":"","name":"unitless"},"type":{"_id":"987","name":"station","description":"

Station identifier; a unique number or alphanumeric string designating a general geographic location at which one or more sampling activities may occur.

"}},{"_id":"1007471","name":"Air_Temp","format":"","frictionlessType":"number","description":"

Air temperature at time of deployment (source: Ship)

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"997","name":"temp_air","description":"

air temperature; see dataset for units of measurement, may be in degrees C or F

"}},{"_id":"1007472","name":"Surface_Temp","format":"","frictionlessType":"number","description":"

Surface temperature at time of deployment (source: Ship)

","units":{"_id":"","name":"degrees Celsius"},"type":{"_id":"998","name":"temp_ss","description":"

sea surface temperature, depth of temp sensor unknown or variable, degrees C.

"}},{"_id":"1007473","name":"Rosette","format":"","frictionlessType":"integer","description":"

Rosette configuration; 12 indicates a rosette equipped with 12 30-L Niskin bottles.

","units":{"_id":"","name":"unitless"},"type":{"_id":"1106","name":"cast_type","description":"

sampling activity code (e.g. where CTD means CTD rosette bottle cast; TM means Trace Metal free rosette bottle cast, etc.) or other indicator of type of cast

"}},{"_id":"1007474","name":"Observer","format":"","frictionlessType":"string","description":"

Person in charge of the log for that event

","units":{"_id":"","name":"unitless"},"type":{"_id":"1129","name":"person","description":"

scientist responsible for the data from a given sampling event

"}},{"_id":"1007475","name":"Notes","format":"","frictionlessType":"string","description":"

Event type, brief description of event

","units":{"_id":"","name":"unitless"},"type":{"_id":"778","name":"comment","description":"

free text comments, may only have meaning to submitting PI

"}}],"related_publications":[{"id":"954437","citation":"Sea-Bird Scientific (2017). SBE Data Processing (Version 7.26.7, released 2017-07-26). [SOFTWARE] https://software.seabird.com/","relation_type":["Software"],"relation_desc":""}],"related_datasets":[],"services":[{"grouping":"","items":[{"name":"View Data","description":"An in-browser view of the primary tabular data file","url":"https://www.bco-dmo.org/dataset/1005482/data/view","contentType":"text/html","actionType":"view"}]},{"grouping":"Metadata","items":[{"name":"HTML","description":"A simple HTML page of the dataset metadata","url":"https://www.bco-dmo.org/dataset/1005482/description","contentType":"text/html","actionType":"view"},{"name":"PDF","description":"A PDF of the HTML dataset metadata","url":"https://www.bco-dmo.org/dataset/1005482/Dataset_description.pdf","contentType":"application/pdf","actionType":"download"},{"name":"ISO 19115-2 (NOAA Profile)","description":"","url":"https://www.bco-dmo.org/dataset/1005482/iso","contentType":"application/xml","actionType":"download"}]}],"programs":[],"projects":[{"_id":"963459","name":"Nitrous Oxide Consumption in Surface Waters","acronym":"N2O Surface Ocean","description":"$18"}],"archives":[{"id_value":"10.26008/1912/bco-dmo.1005482.1","url":"https://doi.org/10.26008/1912/bco-dmo.1005482.1","date_assigned":"2026-09-21","version_date":"2026-09-21","archiver":"Woods Hole Oceanographic Institution (WHOI BCO-DMO)","archiver_id":"191"}],"license":{"name":"Creative Commons Attribution 4.0","id":"CC-BY-4.0","uri":"https://creativecommons.org/licenses/by/4.0/","spdxUri":"https://spdx.org/licenses/CC-BY-4.0"},"metrics":{"views":{"count":36},"downloads":{"count":37}}}}]