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 4-L samples for analysis of water column 234Th concentrations were typically\ntaken at 12 depths spanning the upper 150 m on two casts per experimental\ncycle. On two cycles in the core of the CRD, an additional set of 8 samples\nwas taken to assess 234Th deficiency down to 500-m depth. Samples were\nanalyzed by standard small volume procedures (Benitez-Nelson et al. 2001,\nBuesseler et al. 2001, Pike et al. 2005). Immediately after collection,\nsamples were acidified to a pH < 2 with concentrated HNO3, spiked with 1 mL\n230Th tracer (0.17 Bq mL-1), shaken vigorously, and allowed to equilibrate for\n4-9 hours. Samples were then basified to a pH of 8-9 with NH4OH. 100 uL each\nof KMnO4 (7.5 g L-1) and MnCl2 (33 g L-1) were added and samples were shaken\nthen allowed to sit for >8 hours as Th co-precipitated with manganese oxide.\nSamples were then filtered at high pressure onto a quartz microfiber (QMA)\nfilter, dried in a drying oven, and mounted into RISO sample holders for beta\ncounting.\n \nSamples were beta counted at the University of South Carolina on a RISO low-\nlevel beta multi-counter within two months of the collection date. After an\nadditional 8 months, samples were recounted to determine background beta\nemissions. Detector efficiency was calibrated using four samples taken from\n2000-m depth (in water columns exceeding 3000-m depth), which were assumed to\nbe at equilibrium with respect to 234Th and 238U. After background counts\nyield analyses were conducted as follows. Manganese oxide precipitate was\ndissolved from filters in 10 mL 8M HNO3/10% H2O2. 1 mL of 229Th (1.66 Bq g-1)\ntracer was then added gravimetrically, and the sample was sonicated for 20\nminutes and allowed to sit for >6 hours. An aliquot of this solution was then\nfiltered through a 0.1-mm syringe filter and diluted with 2.2M HNO3/1%HF for\nmass spec analysis of the 229:230Th tracer ratio at the Woods Hole\nOceanographic Institution Analytical Facility.
attribute NC_GLOBAL awards_0_award_nid String 515386
attribute NC_GLOBAL awards_0_award_number String OCE-0826626
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward?AWD_ID=0826626 (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 David L. Garrison
attribute NC_GLOBAL awards_0_program_manager_nid String 50534
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String Th-234 activity \n  PI: Michael Landry (UCSD-SIO) \n  Contact: Michael Stukel (UMCES) \n  Version: 28 May 2014
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 2014-05-28T20:07:40Z
attribute NC_GLOBAL date_modified String 2019-12-11T19:31:49Z
attribute NC_GLOBAL defaultDataQuery String &amp;time&lt;now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.516062.1
attribute NC_GLOBAL Easternmost_Easting double -86.76
attribute NC_GLOBAL geospatial_lat_max double 10.33
attribute NC_GLOBAL geospatial_lat_min double 8.37
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -86.76
attribute NC_GLOBAL geospatial_lon_min double -92.92
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL geospatial_vertical_max double 2002.25
attribute NC_GLOBAL geospatial_vertical_min double 1.75
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/516062 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String Mass Spec
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Mass spec analysis of the 229:230Th tracer ratio took place at the Woods Hole Oceanographic Institution Analytical Facility.
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 516066
attribute NC_GLOBAL instruments_0_description String General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/LAB16/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String Mass Spectrometer
attribute NC_GLOBAL instruments_0_instrument_nid String 685
attribute NC_GLOBAL instruments_0_supplied_name String Mass Spec
attribute NC_GLOBAL instruments_1_acronym String Riso Beta Counter
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Samples were beta counted at the University of South Carolina on a RISO low-level beta multi-counter within two months of the collection date.
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 516065
attribute NC_GLOBAL instruments_1_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_1_instrument_name String Riso Laboratory Anti-coincidence Beta Counters
attribute NC_GLOBAL instruments_1_instrument_nid String 687
attribute NC_GLOBAL instruments_1_supplied_name String RISO low-level beta multi-counter
attribute NC_GLOBAL keywords String activity, altimetry, bco, bco-dmo, biological, cast, chemical, cycle, data, dataset, date, density, depth, dmo, erddap, event, iso, laboratory, latitude, longitude, management, niskin, oceanography, office, preliminary, sal, sample, satellite, th234, Th234_activity, time, u238, U238_activity, uncertainty
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/516062/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/516062 (external link)
attribute NC_GLOBAL Northernmost_Northing double 10.33
attribute NC_GLOBAL param_mapping String {'516062': {'lat': 'master - latitude', 'depth': 'flag - depth', 'lon': 'master - longitude', 'ISO_DateTime_UTC': 'master - time'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/516062/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of California-San Diego
attribute NC_GLOBAL people_0_affiliation_acronym String UCSD-SIO
attribute NC_GLOBAL people_0_person_name String Michael R. Landry
attribute NC_GLOBAL people_0_person_nid String 50545
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 University of Maryland Center for Environmental Science
attribute NC_GLOBAL people_1_affiliation_acronym String UMCES/HPL
attribute NC_GLOBAL people_1_person_name String Michael R Stukel
attribute NC_GLOBAL people_1_person_nid String 515983
attribute NC_GLOBAL people_1_role String Contact
attribute NC_GLOBAL people_1_role_type String related
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 Shannon Rauch
attribute NC_GLOBAL people_2_person_nid String 51498
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 CRD FLUZiE
attribute NC_GLOBAL projects_0_acronym String CRD FLUZiE
attribute NC_GLOBAL projects_0_description String Research was aimed at improved understanding of plankton dynamics, carbon and nutrient fluxes, and potential trace element limitation in the Costa Rica Dome region of the eastern tropical Pacific. The specific science objectives of the 2010 R/V Melville cruise (MV1008) were:\n1) to assess grazing and trace metal/nutrient controls on primary production and phytoplankton standing stocks;\n2) to quantify carbon and elemental fluxes and export rates from the euphotic zone; and\n3) to measure microbial population, processes, stable isotope abundances associated with the OMZ and nitrite maxima.\nAdditional information about MV1008 can be found in the cruise report (PDF).\nNOTE: The original proposal and award abstract are not relevant. The project was originally funded by NSF as experimental tests of phytoplankton controls in the Arabian Sea. Piracy concerns in the region led to the cancellation of the research cruise in 2009, and a Change of Scope request was approved to focus the project on related issues in the Costa Rica Dome (CRD).\nThough this project is not formally affiliated with any large program, it aligns with IMBER's emphasis on community ecology and biogeochemistry, and the OCB focus on carbon-based measurements of production, grazing and export processes.
attribute NC_GLOBAL projects_0_end_date String 2013-12
attribute NC_GLOBAL projects_0_geolocation String Costa Rica Dome, Eastern Tropical Pacific Ocean
attribute NC_GLOBAL projects_0_name String Costa Rica Dome FLUx and Zinc Experiments
attribute NC_GLOBAL projects_0_project_nid String 515387
attribute NC_GLOBAL projects_0_start_date String 2009-01
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 8.37
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL summary String Water column Thorium-234 and Uranium-238 measured on the MV1008 cruise in the Costa Rica Dome (CRD) region of the Eastern Tropical Pacific Ocean.
attribute NC_GLOBAL time_coverage_end String 2010-07-23T22:13:24Z
attribute NC_GLOBAL time_coverage_start String 2010-06-27T01:10:29Z
attribute NC_GLOBAL title String Water column Th-234 activity determined using a 4-L technique from samples collected on R/V Melville cruise MV1008 in the Costa Rica Dome in 2010 (CRD FLUZiE project)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -92.92
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable event short
attribute event _FillValue short 32767
attribute event actual_range short 110, 1098
attribute event bcodmo_name String event
attribute event description String Number referring to the particular deployment activity (event) on the FluZiE cruise.
attribute event long_name String Event
attribute event nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/EVTAGFL/ (external link)
attribute event units String integer
variable cast byte
attribute cast _FillValue byte 127
attribute cast actual_range byte 10, 84
attribute cast bcodmo_name String cast
attribute cast description String CTD Cast number from the FluZiE cruise.
attribute cast long_name String Cast
attribute cast units String integer
variable cycle byte
attribute cycle _FillValue byte 127
attribute cycle actual_range byte 1, 5
attribute cycle bcodmo_name String unknown
attribute cycle description String Refers to the 4-day Lagrangian experiment during which the sample was taken.
attribute cycle long_name String Cycle
attribute cycle units String integer
variable depth double
attribute depth _CoordinateAxisType String Height
attribute depth _CoordinateZisPositive String down
attribute depth _FillValue double NaN
attribute depth actual_range double 1.75, 2002.25
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 (in meters) that the sample was taken from as determined by CTD.
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 niskin byte
attribute niskin _FillValue byte 127
attribute niskin actual_range byte 1, 24
attribute niskin bcodmo_name String bot_Nis
attribute niskin description String Niskin bottle that the sample was taken from.
attribute niskin long_name String Niskin
attribute niskin units String integer
variable sample String
attribute sample bcodmo_name String sample
attribute sample description String Refers to a specific 234Th measurement.
attribute sample long_name String Sample
attribute sample nerc_identifier String https://vocab.nerc.ac.uk/collection/P02/current/ACYC/ (external link)
attribute sample units String unitless
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 8.37, 10.33
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 (in degrees North) where the sample was collected.
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 -92.92, -86.76
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 (in degrees East) where the sample was collected.
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 sal float
attribute sal _FillValue float NaN
attribute sal actual_range float 33.45, 34.94
attribute sal bcodmo_name String sal
attribute sal description String Salinity determined by CTD.
attribute sal long_name String Sal
attribute sal nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/ (external link)
attribute sal units String practical salinity units (PSU)
variable density float
attribute density _FillValue float NaN
attribute density actual_range float 1021.17, 1036.98
attribute density bcodmo_name String density
attribute density description String Density determined by CTD.
attribute density long_name String Density
attribute density units String kilograms per cubic meter (kg m-3)
variable U238_activity float
attribute U238_activity _FillValue float NaN
attribute U238_activity actual_range float 2.31, 2.43
attribute U238_activity bcodmo_name String unknown
attribute U238_activity description String The activity of Uranium-238 (238U) estimated from salinity using the equation of Owens et al. (2011).
attribute U238_activity long_name String U238 Activity
attribute U238_activity units String decays per minute per liter (dpm L-1)
variable Th234_activity float
attribute Th234_activity _FillValue float NaN
attribute Th234_activity actual_range float 0.68, 3.22
attribute Th234_activity bcodmo_name String thorium-234
attribute Th234_activity description String The activity of Thorium-234 (234Th).
attribute Th234_activity long_name String Th234 Activity
attribute Th234_activity units String decays per minute per liter (dpm L-1)
variable uncertainty float
attribute uncertainty _FillValue float NaN
attribute uncertainty actual_range float 0.05, 0.58
attribute uncertainty bcodmo_name String unknown
attribute uncertainty description String The uncertainty in 234Th activity determined by propagating our measurement uncertainty.
attribute uncertainty long_name String Uncertainty
attribute uncertainty units String decays per minute per liter (dpm L-1)
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.277601029E9, 1.279923204E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date and time (UTC) of CTD cast from which the water was drawn formatted to ISO 8601 standard. format: YYYY-mm-ddTHH:MM:SS.xx
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 1970-01-01T00:00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z

 
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