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 (Figure 1). In each of the cycles, we conducted particle flux\nsampling method intercomparisons between fluxes derived from upper water\ncolumn deficits of 234Th vs. its parent isotope 238U, two types of neutrally\nbuoyant sediment traps (NBST and PELAGRA), and a surface tethered array of\nsediment traps (STT). DY077 samples analyzed in US (WHOI and Skidmore College)\nare archived here; DY077 samples analyzed in the UK (NOC) are archived in the\nBritish Oceanographic Data Centre.\n \nTwo McLane in-situ battery powered pumps were deployed two times for the\ncollection of size fractionated particles. The water passes first through a\n51-micron screen followed by a nominal 1-micron quartz filter. Filter\ndiameters are both 142 mm and a baffled opening developed for the GEOTRACES\nprogram keeps particles from washing off the top screen during retrieval of\nthe pumps as they ascend on the wire. The pumps were programmed with a 1-hour\ndelay time before turning on at depths of 200 and 350 m. After a pumping time\nof 2 hours, the pumps shut off and were retrieved. After retrieval, volumes\nwere noted (measured by dual flow meters), any water that remained in the pump\nwas drained through the filters, and the screen was rinsed with prefiltered\nseawater onto a 1-\\u00b5m pore size silver filter (25-mm diameter).\n \nThe Ag filter and a 25-mm subsample from the QMA were dried at 45\\u00b0C,\nmounted, and immediately counted for low-level \\u03b2 emission onboard the\nship. At WHOI, a subset of samples was re-counted approximately one month\nlater on shore. Final background counts to measure non-234Th related \\u03b2\nemissions were conducted approximately six months later. At this point,\nfilters were unmounted, re-dried, and gravimetrically subdivided into four\nsections. One half of the filter was analyzed for total carbon and nitrogen\nafter high-temperature combustion on a Thermo Electron FlashEA 1112 C/N\nanalyzer. Coulometric analysis for PIC after sample acidification was\nperformed on a quarter of the filter (Johnson et al, 1985; Honjo et al, 2000).\nThe remainder of the filter was archived.\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 In-situ pump data \n  PI: Kenneth Buesseler \n  Data version 2: 2019-06-26
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 2019-04-29T16:37:46Z
attribute NC_GLOBAL date_modified String 2019-06-26T19:34:38Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.765850.2
attribute NC_GLOBAL Easternmost_Easting double -16.4953
attribute NC_GLOBAL geospatial_lat_max double 48.9835
attribute NC_GLOBAL geospatial_lat_min double 48.8656
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -16.4953
attribute NC_GLOBAL geospatial_lon_min double -16.5907
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 350.0
attribute NC_GLOBAL geospatial_vertical_min double 200.0
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/765850 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String CO2 coulometer
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 766332
attribute NC_GLOBAL instruments_0_description String A CO2 coulometer semi-automatically controls the sample handling and extraction of CO2 from seawater samples. Samples are acidified and the CO2 gas is bubbled into a titration cell where CO2 is converted to hydroxyethylcarbonic acid which is then automatically titrated with a coulometrically-generated base to a colorimetric endpoint.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB12 (external link)
attribute NC_GLOBAL instruments_0_instrument_name String CO2 Coulometer
attribute NC_GLOBAL instruments_0_instrument_nid String 507
attribute NC_GLOBAL instruments_0_supplied_name String Coulometer
attribute NC_GLOBAL instruments_1_acronym String McLane Pump
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 766329
attribute NC_GLOBAL instruments_1_description String McLane pumps sample large volumes of seawater at depth. They are attached to a wire and lowered to different depths in the ocean. As the water is pumped through the filter, particles suspended in the ocean are collected on the filters. The pumps are then retrieved and the contents of the filters are analyzed in a lab.
attribute NC_GLOBAL instruments_1_instrument_name String McLane Pump
attribute NC_GLOBAL instruments_1_instrument_nid String 627
attribute NC_GLOBAL instruments_2_acronym String Riso Beta Counter
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 766330
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 instruments_3_dataset_instrument_nid String 766331
attribute NC_GLOBAL instruments_3_description String Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material.
attribute NC_GLOBAL instruments_3_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB01/ (external link)
attribute NC_GLOBAL instruments_3_instrument_name String Elemental Analyzer
attribute NC_GLOBAL instruments_3_instrument_nid String 546339
attribute NC_GLOBAL instruments_3_supplied_name String Thermo Electron FlashEA 1112 C/N analyzer
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, carbon, chemical, data, dataset, date, date_end, date_start, deployment, depth, dmo, end, erddap, error, inorganic, iso, latitude, longitude, management, oceanography, office, organic, part, particulate, pic, PIC_err, poc, POC_err, pore, pore_size, preliminary, size, start, station, th234, Th234_part, Th234_part_err, time, time_end, time_start, tpc, TPC_err, tpn, TPN_err, volume
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/765850/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/765850 (external link)
attribute NC_GLOBAL Northernmost_Northing double 48.9835
attribute NC_GLOBAL param_mapping String {'765850': {'lat': 'master - latitude', 'depth': 'master - depth', 'lon': 'master - longitude', 'ISO_DateTime_start': 'flag - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/765850/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 48.8656
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String TPC, PIC, POC, TPN, and Th-234 from in-situ pumps 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 2017-04-26T09:15Z
attribute NC_GLOBAL time_coverage_start String 2017-04-19T15:17Z
attribute NC_GLOBAL title String [In-situ pump data] - TPC, PIC, POC, TPN, and Th-234 from in-situ pumps 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 2
attribute NC_GLOBAL Westernmost_Easting double -16.5907
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable deployment byte
attribute deployment _FillValue byte 127
attribute deployment actual_range byte 1, 2
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 38, 88
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 depth double
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 200.0, 350.0
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 pore_size byte
attribute pore_size _FillValue byte 127
attribute pore_size actual_range byte 1, 51
attribute pore_size bcodmo_name String sample_descrip
attribute pore_size description String nominal pore size of filter used to collect particles
attribute pore_size long_name String Pore Size
attribute pore_size units String micrometers (um)
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 48.8656, 48.9835
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 in-situ pump deployment
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 -16.5907, -16.4953
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 in-situ pump deployment
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_start String
attribute date_start bcodmo_name String date_utc
attribute date_start description String date sample collection began (GMT) in ISO 8601 format yyyy-mm-dd
attribute date_start long_name String Date Start
attribute date_start time_precision String 1970-01-01
attribute date_start units String unitless
variable time_start String
attribute time_start bcodmo_name String time_utc
attribute time_start description String time sample collection began (GMT) in ISO 8601 format hh:mm:ss
attribute time_start long_name String Time Start
attribute time_start units String unitless
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.49261502E9, 1.4931981E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date time sampling began (GMT) in format yyyy-mm-ddTHH:MMZ
attribute time ioos_category String Time
attribute time long_name String ISO Date Time Start
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String ISO_DateTime_start
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 date_end String
attribute date_end bcodmo_name String date_utc
attribute date_end description String date sample collection ended (GMT) in ISO 8601 format yyyy-mm-dd
attribute date_end long_name String Date End
attribute date_end time_precision String 1970-01-01
attribute date_end units String unitless
variable time_end String
attribute time_end bcodmo_name String time_utc
attribute time_end description String time sample collection ended (GMT) in ISO 8601 format hh:mm:ss
attribute time_end long_name String Time End
attribute time_end units String unitless
variable volume short
attribute volume _FillValue short 32767
attribute volume actual_range short 787, 894
attribute volume bcodmo_name String sample_descrip
attribute volume description String water volume filtered by in-situ pump
attribute volume long_name String Volume
attribute volume units String liters (L)
variable TPN float
attribute TPN _FillValue float NaN
attribute TPN actual_range float 0.005, 0.056
attribute TPN bcodmo_name String Total Particulate Nitrogen
attribute TPN description String total particulate nitrogen concentration
attribute TPN long_name String TPN
attribute TPN units String micromoles per liter (umol/L)
variable TPN_err float
attribute TPN_err _FillValue float NaN
attribute TPN_err actual_range float 0.004, 0.007
attribute TPN_err bcodmo_name String Total Particulate Nitrogen
attribute TPN_err description String total particulate nitrogen uncertainty. For 51-µm particles is unavailable because blanks were below the analytical detection limit.
attribute TPN_err long_name String TPN Err
attribute TPN_err units String micromoles per liter (umol/L)
variable TPC float
attribute TPC _FillValue float NaN
attribute TPC actual_range float 0.039, 0.38
attribute TPC bcodmo_name String TPC
attribute TPC description String total particulate carbon concentration
attribute TPC long_name String TPC
attribute TPC units String micromoles per liter (umol/L)
variable TPC_err float
attribute TPC_err _FillValue float NaN
attribute TPC_err actual_range float 0.006, 0.03
attribute TPC_err bcodmo_name String TPC
attribute TPC_err description String total particulate carbon uncertainty, determined as 3 x SD of blanks, scaled by the volume filtered and fraction of the filter area analyzed. See note in Processing Description regarding QMA punch-to-punch variability.
attribute TPC_err long_name String TPC Err
attribute TPC_err units String micromoles per liter (umol/L)
variable PIC float
attribute PIC _FillValue float NaN
attribute PIC actual_range float 0.108, 0.302
attribute PIC bcodmo_name String PIC
attribute PIC description String total particulate inorganic carbon concentration
attribute PIC long_name String Particulate Inorganic Carbon
attribute PIC units String micrograms per liter (ug/L)
variable PIC_err float
attribute PIC_err _FillValue float NaN
attribute PIC_err actual_range float 0.003, 0.008
attribute PIC_err bcodmo_name String PIC
attribute PIC_err description String total particulate inorganic carbon uncertainty, determined as 3 x SD of blanks, scaled by the volume filtered and fraction of the filter area analyzed. See note in Processing Description regarding QMA punch-to-punch variability.
attribute PIC_err long_name String PIC Err
attribute PIC_err units String micrograms per liter (ug/L)
variable POC float
attribute POC _FillValue float NaN
attribute POC actual_range float 0.03, 0.36
attribute POC bcodmo_name String POC
attribute POC description String total particulate organic carbon concentration, computed as the difference between TPC and PIC
attribute POC long_name String Particulate Organic Carbon
attribute POC nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/ (external link)
attribute POC units String micromoles per liter (umol/L)
variable POC_err float
attribute POC_err _FillValue float NaN
attribute POC_err actual_range float 0.006, 0.03
attribute POC_err bcodmo_name String POC
attribute POC_err description String total particulate organic carbon uncertainty, POC_err = (TPC_err2 + PIC_err2)1/2. See note in Processing Description regarding QMA punch-to-punch variability.
attribute POC_err long_name String POC Err
attribute POC_err nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/ (external link)
attribute POC_err units String micromoles per liter (umol/L)
variable Th234_part float
attribute Th234_part _FillValue float NaN
attribute Th234_part actual_range float 0.0117, 0.093
attribute Th234_part bcodmo_name String thorium-234
attribute Th234_part description String particulate thorium-234 activity
attribute Th234_part long_name String Th234 Part
attribute Th234_part units String disintegration per minute per liter (dpm/L)
variable Th234_part_err float
attribute Th234_part_err _FillValue float NaN
attribute Th234_part_err actual_range float 5.0E-4, 0.003
attribute Th234_part_err bcodmo_name String thorium-234
attribute Th234_part_err description String particulate thorium-234 uncertainty, propagated from counting statistics. See note in Processing Description regarding QMA punch-to-punch variability.
attribute Th234_part_err long_name String Th234 Part Err
attribute Th234_part_err units String disintegration per minute per liter (dpm/L)

 
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