BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute NC_GLOBAL acquisition_description String Samples were collected during two deployment cycles (termed \\u201cdeployment\n1\\u201d and \\u201cdeployment 2\\u201d) occupied during the RRS Discovery cruise\nDY077 to the Porcupine Abyssal Plain Sustained Observatory (PAP-SO) Site in\nApril 2017. In each of the cycles, we conducted particle flux sampling method\nintercomparisons between fluxes derived from upper water column deficits of\n234Th vs. its parent isotope 238U, two types of neutrally buoyant sediment\ntraps (NBST and PELAGRA), and a surface tethered array of sediment traps\n(STT).  \n 234Th profiles were sampled at the beginning and end of each deployment,\ntriangulated 10 km apart around the drifting trap location (Figure 1). A total\nof 161 234Th samples were collected (Table 1). A 4-L sample was collected from\nCTD casts, a stable Th yield monitor was added and the pH was adjusted to\npromote the formation of a Mn precipitate that scavenges Th. This was then\nfiltered onto a 25-mm diameter quartz filter (Buesseler et al., 2009). The\nquartz filter was dried and mounted, then beta counted on board and again 6\nmonths post-cruise to determine the amount of interfering beta activity and\ndetector background that was not associated with 234Th in the sample.\n \nPorcupine Abyssal Plain Sustained Observatory (PAP-SO) site in the Northeast\nAtlantic Ocean (49\\u00b0N, 16.5\\u00b0W)
attribute NC_GLOBAL awards_0_award_nid String 762021
attribute NC_GLOBAL awards_0_award_number String OCE-1659995
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1659995 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Dr Simone Metz
attribute NC_GLOBAL awards_0_program_manager_nid String 51479
attribute NC_GLOBAL awards_1_award_nid String 762029
attribute NC_GLOBAL awards_1_award_number String OCE-1660012
attribute NC_GLOBAL awards_1_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1660012 (external link)
attribute NC_GLOBAL awards_1_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_1_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_1_funding_source_nid String 355
attribute NC_GLOBAL awards_1_program_manager String Dr Simone Metz
attribute NC_GLOBAL awards_1_program_manager_nid String 51479
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Water column Th-234 activities \n  PI: Kenneth Buesseler \n  Data version 1: 2019-05-02
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2019-04-29T16:38:17Z
attribute NC_GLOBAL date_modified String 2019-06-26T19:33:36Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.765859.1
attribute NC_GLOBAL Easternmost_Easting double -16.2624
attribute NC_GLOBAL geospatial_lat_max double 49.2009
attribute NC_GLOBAL geospatial_lat_min double 48.7487
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -16.2624
attribute NC_GLOBAL geospatial_lon_min double -16.78
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 415.0
attribute NC_GLOBAL geospatial_vertical_min double 5.0
attribute NC_GLOBAL geospatial_vertical_positive String down
attribute NC_GLOBAL geospatial_vertical_units String m
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/765859 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Niskin bottle
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 766183
attribute NC_GLOBAL instruments_0_description String 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.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Niskin bottle
attribute NC_GLOBAL instruments_0_instrument_nid String 413
attribute NC_GLOBAL instruments_1_acronym String CTD
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 766182
attribute NC_GLOBAL instruments_1_description String 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 and permits scientists observe the physical properties in real time via a conducting cable connecting the CTD to a deck unit and computer on the 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.  This instrument designation is used when specific make and model are not known.
attribute NC_GLOBAL instruments_1_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/130/ (external link)
attribute NC_GLOBAL instruments_1_instrument_name String CTD profiler
attribute NC_GLOBAL instruments_1_instrument_nid String 417
attribute NC_GLOBAL instruments_1_supplied_name String CTD Seabird 911plus
attribute NC_GLOBAL instruments_2_acronym String Riso Beta Counter
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 766184
attribute NC_GLOBAL instruments_2_description String Low-level beta detectors manufactured by Riso (now Nutech) in Denmark. These instruments accept samples that can be mounted on a 25mm filter holder. These detectors have very low backgrounds, 0.17 counts per minute, and can have counting efficiencies as high as 55%.\n\nSee:\nhttp://cafethorium.whoi.edu/website/about/services_radioanalytical_facility_equip.html\nand\nhttp://www.nutech.dtu.dk/Produkter/Dosimetri/NUK_instruments/GM_multicounter.aspx
attribute NC_GLOBAL instruments_2_instrument_name String Riso Laboratory Anti-coincidence Beta Counters
attribute NC_GLOBAL instruments_2_instrument_nid String 687
attribute NC_GLOBAL instruments_2_supplied_name String Riso Beta Counter
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, bottle, cast, chemical, data, dataset, date, deployment, depth, dmo, erddap, error, iso, latitude, longitude, management, oceanography, office, preliminary, station, th234, Th234_tot, Th234_tot_err, time, time2, tot, u238, U238_tot, U238_tot_err
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/765859/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/765859 (external link)
attribute NC_GLOBAL Northernmost_Northing double 49.2009
attribute NC_GLOBAL param_mapping String {'765859': {'lat': 'master - latitude', 'depth': 'master - depth', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/765859/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_0_affiliation_acronym String WHOI
attribute NC_GLOBAL people_0_person_name String Kenneth O. Buesseler
attribute NC_GLOBAL people_0_person_nid String 50522
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Skidmore College
attribute NC_GLOBAL people_1_person_name String Margaret L. Estapa
attribute NC_GLOBAL people_1_person_nid String 644830
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_2_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_2_person_name String Amber York
attribute NC_GLOBAL people_2_person_nid String 643627
attribute NC_GLOBAL people_2_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_2_role_type String related
attribute NC_GLOBAL project String Are Traps Equal
attribute NC_GLOBAL projects_0_acronym String Are Traps Equal
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:\nThere is considerable need to understand the biological and ecological processes that through net primary production fix dissolved carbon dioxide (CO2) into organic matter in the upper ocean, and the processes that subsequently transport this organic carbon in to the ocean's interior. Most of the particulate organic carbon flux to the deep ocean is thought to be mediated by sinking particles. Ultimately it is the deep organic carbon transport and its sequestration that define the impact of ocean biota on atmospheric CO2 levels and hence climate. Currently, various methods are available to measure the amount of particles in the ocean that sink over a specified period of time commonly referred to as particle flux. Unfortunately, all of these methods are used independently of each other with very little intercomparison, leaving some uncertainty as to which approach provides the most accurate estimates. This study seeks to be the first concerted effort to standardize particle flux measurements. Seeking to keep the cost modest, the researchers are taking advantage of a collaboration with scientists in the United Kingdom to participate in an already scheduled research cruise. The proposed research will have much greater impact that merely standardization of particle flux measurements because it will provide the science and modeling community the ability to quantify the transfer of carbon throughout the surface ocean. Also, this project provides a variety of mentoring and training opportunities for students. A PhD student at Woods Hole Oceanographic Institute will get their first sea-going experience and will learn all of the processing steps for the study of an isotope of thorium (234Th). Skidmore College will have an undergraduate participant in the research and the results from the cruise will also be an excellent additional component for undergraduate oceanography classes.\nResearchers from Woods Hole Oceanographic Institution and Skidmore College, in collaboration with a scientist from the National Oceanography Centre, Southampton will inter-compare direct, tracer, and optical-sensor methods used to determine sinking particle fluxes in the surface ocean. To do this, they will firstly conduct a comparison of two types of neutrally buoyant traps and one surface-tethered, drifting array. Secondly, measured trap fluxes will be compared to predicted 234Th fluxes from a 3D time-series of data. Lastly, optical sediment trap measurements will be compared to particle size distributions in the water column and gel traps, as well as size-fractionated particles on filters from large volume pumps. With this research, global ocean models, particularly carbon, will have greater accuracy and stronger conclusions will be able to be drawn from them.
attribute NC_GLOBAL projects_0_end_date String 2019-06
attribute NC_GLOBAL projects_0_geolocation String Porcupine Abyssal Plain Sustained Observatory (PAP-SO) site in the Northeast Atlantic Ocean (49°N, 16.5°W)
attribute NC_GLOBAL projects_0_name String Collaborative Research:   Are all traps created equal?  A multi-method assessment of the collection and detection of sinking particles in the ocean
attribute NC_GLOBAL projects_0_project_nid String 762022
attribute NC_GLOBAL projects_0_start_date String 2017-01
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 48.7487
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String U238_tot_err
attribute NC_GLOBAL summary String Water column Th-234 activities from 4-liter water samples at the Porcupine Abyssal Plain Sustained Observatory (PAP-SO) site in the Northeast Atlantic Ocean during RRS Discovery cruise DY077 in April of 2017.
attribute NC_GLOBAL time_coverage_end String 2017-04-28T10:50Z
attribute NC_GLOBAL time_coverage_start String 2017-04-19T09:00Z
attribute NC_GLOBAL title String [Water column Th-234 activities] - Water column Th-234 activities from 4-liter water samples at the Porcupine Abyssal Plain Sustained Observatory (PAP-SO) site in the Northeast Atlantic Ocean during RRS Discovery cruise DY077 in April of 2017 (Collaborative Research:   Are all traps created equal?  A multi-method assessment of the collection and detection of sinking particles in the ocean)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -16.78
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable deployment String
attribute deployment bcodmo_name String deploy
attribute deployment description String deployment cycle during cruise DY077
attribute deployment long_name String Deployment
attribute deployment units String unitless
variable station byte
attribute station _FillValue byte 127
attribute station actual_range byte 31, 106
attribute station bcodmo_name String station
attribute station description String station occupied during cruise DY077
attribute station long_name String Station
attribute station units String unitless
variable cast byte
attribute cast _FillValue byte 127
attribute cast actual_range byte 4, 23
attribute cast bcodmo_name String platform
attribute cast description String CTD cast number
attribute cast long_name String Cast
attribute cast units String unitless
variable bottle byte
attribute bottle _FillValue byte 127
attribute bottle actual_range byte 1, 20
attribute bottle bcodmo_name String bottle
attribute bottle description String rosette bottle number
attribute bottle long_name String Bottle
attribute bottle units String unitless
variable depth double
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 5.0, 415.0
attribute depth axis String Z
attribute depth bcodmo_name String depth
attribute depth colorBarMaximum double 8000.0
attribute depth colorBarMinimum double -8000.0
attribute depth colorBarPalette String TopographyDepth
attribute depth description String depth of water sample collection
attribute depth ioos_category String Location
attribute depth long_name String Depth
attribute depth nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/DEPH/ (external link)
attribute depth positive String down
attribute depth standard_name String depth
attribute depth units String m
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 48.7487, 49.2009
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String latitude of CTD cast
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -16.78, -16.2624
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String longitude of CTD cast
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable date String
attribute date bcodmo_name String date_utc
attribute date description String date of CTD cast (GMT) in ISO 8601 format yyyy-mm-dd
attribute date long_name String Date
attribute date time_precision String 1970-01-01
attribute date units String unitless
variable time2 String
attribute time2 bcodmo_name String time_utc
attribute time2 description String time of CTD cast (GMT) in ISO 8601 format hh:mm:ss
attribute time2 long_name String Time
attribute time2 units String unitless
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.4925924E9, 1.4933766E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String date time (UTC) in ISO 8601 format yyyy-mm-ddTHH:MMZ
attribute time ioos_category String Time
attribute time long_name String ISO Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String ISO_DateTime_UTC
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable U238_tot float
attribute U238_tot _FillValue float NaN
attribute U238_tot actual_range float 2.46, 2.48
attribute U238_tot bcodmo_name String U238
attribute U238_tot description String total uranium-238 activity calculated from CTD salinity as per Owens et al. 2011
attribute U238_tot long_name String U238 Tot
attribute U238_tot nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/GAU238BD/ (external link)
attribute U238_tot units String disintegration per minute per liter (dpm/L)
variable U238_tot_err float
attribute U238_tot_err _FillValue float NaN
attribute U238_tot_err actual_range float 0.05, 0.05
attribute U238_tot_err bcodmo_name String U238
attribute U238_tot_err description String total uranium-238 uncertainty, derived from the uncertainty in the relationship in Owens et al. 2011
attribute U238_tot_err long_name String U238 Tot Err
attribute U238_tot_err nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/GAU238BD/ (external link)
attribute U238_tot_err units String disintegration per minute per liter (dpm/L)
variable Th234_tot float
attribute Th234_tot _FillValue float NaN
attribute Th234_tot actual_range float 1.79, 2.82
attribute Th234_tot bcodmo_name String thorium-234
attribute Th234_tot description String total uranium-238 activity determined from 4-liter water samples
attribute Th234_tot long_name String Th234 Tot
attribute Th234_tot units String disintegration per minute per liter (dpm/L)
variable Th234_tot_err float
attribute Th234_tot_err _FillValue float NaN
attribute Th234_tot_err actual_range float 0.03, 0.1
attribute Th234_tot_err bcodmo_name String thorium-234
attribute Th234_tot_err description String total uranium-238 uncertainty, derived from counting statistics and error propagation for mass/volume measurements and ICP-MS recovery analysis
attribute Th234_tot_err long_name String Th234 Tot Err
attribute Th234_tot_err units String disintegration per minute per liter (dpm/L)

 
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