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Dataset Title:	[Doliolid diet: lab chlorophyll, carbon, nitrogen] - Doliolid abundance, carbon and nitrogen content, chlorophyll-a, temperature, salinity, and depth from CTD casts from 25 RV Savannah cruises at the South Atlantic Bight, 2015- 2017 (The cryptic diet of the globally significant pelagic tunicate Dolioletta gegenbauri (Uljanin, 1884.))
Institution:	BCO-DMO (Dataset ID: bcodmo_dataset_692279)
Range:	longitude = -81.1802 to -80.097°E, latitude = 29.9447 to 31.9298°N, depth = 5.0 to 45.9m
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  cruise_id {
    String bcodmo_name "cruise_id";
    String description "cruise identifier; official R2R designation";
    String long_name "Cruise Id";
    String units "unitless";
  }
  alt_cruise_id {
    String bcodmo_name "cruise_id";
    String description "alternate cruise identifier";
    String long_name "Alt Cruise Id";
    String units "unitless";
  }
  cast {
    String bcodmo_name "cast";
    String description "cast number";
    String long_name "Cast";
    String units "unitless";
  }
  date_local {
    String bcodmo_name "date_local";
    String description "local date formatted as yyyy-mm-dd";
    String long_name "Date Local";
    String source_name "date_local";
    String time_precision "1970-01-01";
    String units "unitless";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    Float64 actual_range 5.0, 45.9;
    String axis "Z";
    String bcodmo_name "depth";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String description "depth of sample";
    String ioos_category "Location";
    String long_name "Depth";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/DEPH/";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 29.9447, 31.9298;
    String axis "Y";
    String bcodmo_name "latitude";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "latitude; north is positive";
    String ioos_category "Location";
    String long_name "Latitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LATX/";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -81.1802, -80.097;
    String axis "X";
    String bcodmo_name "longitude";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "longitude; east is positive";
    String ioos_category "Location";
    String long_name "Longitude";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P09/current/LONX/";
    String standard_name "longitude";
    String units "degrees_east";
  }
  temp_surface {
    Float32 _FillValue NaN;
    Float32 actual_range 13.3, 29.8;
    String bcodmo_name "temperature";
    String description "Surface temperature; observed surface temperature recorded during a CTD cast.";
    String long_name "Temp Surface";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String units "degrees Celsius";
  }
  temp_bottom {
    Float32 _FillValue NaN;
    Float32 actual_range 13.28, 27.96;
    String bcodmo_name "temperature";
    String description "Bottom temperature; observed bottom (1-2 meters off the bottom) temperature recorded during a CTD cast.";
    String long_name "Temp Bottom";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/TEMPP901/";
    String units "degrees Celsius";
  }
  sal_surface {
    Float32 _FillValue NaN;
    Float32 actual_range 30.52, 37.39;
    String bcodmo_name "sal";
    String description "Surface salinity ; observed surface salinity recorded during a CTD cast.";
    String long_name "Sal Surface";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/";
    String units "Practical Salinity Units (PSU)";
  }
  sal_bottom {
    Float32 _FillValue NaN;
    Float32 actual_range 31.79, 37.46;
    String bcodmo_name "sal";
    String description "Bottom salinity; observed salinity near bottom (1-2 meters off the bottom) recorded during a CTD cast";
    String long_name "Sal Bottom";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/";
    String units "Practical Salinity Units (PSU)";
  }
  chla_surface_fluor {
    Float32 _FillValue NaN;
    Float32 actual_range 0.22, 6.7;
    String bcodmo_name "chlorophyll a";
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String description "Surface Chlorophyll a fluorescence; observed surface (1-5M) in situ fluorescence recorded during a CTD cast.";
    String long_name "Concentration Of Chlorophyll In Sea Water";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLHPP1/";
    String units "mg m-3";
  }
  chla_bottom_fluor {
    Float32 _FillValue NaN;
    Float32 actual_range 0.51, 9.79;
    String bcodmo_name "chlorophyll a";
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String description "Bottom Chlorophyll a fluorescence; observed bottom (1-2 meters off the bottom) in situ fluorescence recorded during a CTD cast.";
    String long_name "Concentration Of Chlorophyll In Sea Water";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLHPP1/";
    String units "mg m-3";
  }
  chla_nr_bot_extr {
    Float32 _FillValue NaN;
    Float32 actual_range 0.116, 3.264;
    String bcodmo_name "chlorophyll a";
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String description "Total Chlorophyll a (near bottom) chemical extracted mg m-3; Average of 3 samples of acetone extracted chlorophyll a collected at ~ depth of the chlorophyll maximum.";
    String long_name "Concentration Of Chlorophyll In Sea Water";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLHPP1/";
    String units "mg m-3";
  }
  phaeo_total_nr_bot_extr {
    Float32 _FillValue NaN;
    Float32 actual_range -0.038, 2.435;
    String bcodmo_name "phaeopigment";
    String description "Total Phaeophytin (near bottom) chemical extracted mg m-3; Average of 3 samples of acidified acetone extracted chlorophyll a collected at depth of the chlorophyll maximum.";
    String long_name "Phaeo Total Nr Bot Extr";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PHAEFMP1/";
    String units "mg m-3";
  }
  gt8uml_chla_nr_bot_extr {
    Float32 _FillValue NaN;
    Float32 actual_range 0.025, 2.293;
    String bcodmo_name "chlorophyll a";
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String description "Greater than 8 µm chlorophyll a fraction (near bottom) chemical extracted mg m-3; Average of 3 samples of acetone extracted chlorophyll a collected at depth of the chlorophyll maximum.";
    String long_name "Concentration Of Chlorophyll In Sea Water";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CPHLHPP1/";
    String units "mg m-3";
  }
  gt8uml_phaeo_nr_bot_extr {
    Float32 _FillValue NaN;
    Float32 actual_range -0.045, 1.45;
    String bcodmo_name "phaeopigment";
    String description "Greater than 8 µm phaeophytin (near bottom) chemical extracted mg m-3; Average of 3 samples of acidified acetone extracted chlorophyll a collected at depth of the chlorophyll maximum.";
    String long_name "Gt8uml Phaeo Nr Bot Extr";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/PHAEFMP1/";
    String units "mg m-3";
  }
  POC_ug {
    Float64 _FillValue NaN;
    Float64 actual_range 50.275, 680.825;
    String bcodmo_name "POC";
    String description "Water Total POC; Concentration of particulate organic carbon (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "POC Ug";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "ug C L-1";
  }
  POC_moles {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 5.67e-5;
    String bcodmo_name "POC";
    String description "Water Total POC; Concentration of particulate organic carbon (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "POC Moles";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "moles C L-1";
  }
  PON_ug {
    Float64 _FillValue NaN;
    Float64 actual_range 2.55, 410.7404083;
    String bcodmo_name "PON";
    String description "Water Total PON; Concentration of particulate organic nitrogen (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "PON Ug";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "ug N L-1";
  }
  PON_moles {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 4.95e-6;
    String bcodmo_name "PON";
    String description "Water Total PON; Concentration of particulate organic nitrogen (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "PON Moles";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "moles N L-1";
  }
  lt10um_POC_ug {
    Float64 _FillValue NaN;
    Float64 actual_range 61.783, 353.7;
    String bcodmo_name "POC";
    String description "Water";
    String long_name "Lt10um POC Ug";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "ug C L-1";
  }
  lt10um_POC_moles {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 2.95e-5;
    String bcodmo_name "POC";
    String description "Water < 10 um POC; Concentration of particulate organic carbon (near bottom) in less than 10 micron size fraction; Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "Lt10um POC Moles";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "moles C L-1";
  }
  lt10um_PON_ug {
    Float64 _FillValue NaN;
    Float64 actual_range 4.0, 363.78975;
    String bcodmo_name "PON";
    String description "Water < 10 um PON; Concentration of particulate organic nitrogen (near bottom) in less than 10 micron size fraction; Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "Lt10um PON Ug";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "ug N L-1";
  }
  lt10um_PON_moles {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 2.39e-6;
    String bcodmo_name "PON";
    String description "Water < 10 um PON; Concentration of particulate organic nitrogen (near bottom) in less than 10 micron size fraction ; Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "Lt10um PON Moles";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "moles N L-1";
  }
  POC_13C {
    Float64 _FillValue NaN;
    Float64 actual_range -31.0667, -17.257;
    String bcodmo_name "POC";
    String description "Water Total POC 13C; 13-Carbon isotopic fraction of total particulate organic carbon (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "POC 13 C";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "per mil vs PDB standard";
  }
  PON_15N {
    Float64 _FillValue NaN;
    Float64 actual_range 1.24, 15.70266667;
    String bcodmo_name "PON";
    String description "Water Total PON 15N; 15-Nitrogen isotopic fraction of total particulate organic nitrogen (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "PON 15 N";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "per mil vs air N2";
  }
  lt10um_POC_13C {
    Float64 _FillValue NaN;
    Float64 actual_range -35.941, -21.728;
    String bcodmo_name "POC";
    String description "Water < 10 um POC; 13-Carbon isotopic fraction of less than 10 micron fraction particulate organic carbon (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "Lt10um POC 13 C";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/CORGCAP1/";
    String units "per mil vs PDB standard";
  }
  lt10um_PON_15N {
    Float64 _FillValue NaN;
    Float64 actual_range 1.817333333, 15.172;
    String bcodmo_name "PON";
    String description "Water < 10 um PON 15N; 15-Nitrogen isotopic fraction of less than 10 micron fraction particulate organic nitrogen (near bottom); Average of 3 water samples collected at depth of the chlorophyll maximum.";
    String long_name "Lt10um PON 15 N";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/MDMAP013/";
    String units "per mil vs air N2";
  }
  D_geg_gonozooid_13C {
    Float64 _FillValue NaN;
    String bcodmo_name "delta13C";
    String description "D. gegenbauri (gonozooid); 13-Carbon isotopic fraction of wild caught Dolioletta gegenbauri gonozooids; Average of all animals captured per sample.";
    String long_name "D Geg Gonozooid 13 C";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/D13CMITX/";
    String units "per mil vs PDB standard";
  }
  D_geg_gonozooid_15N {
    Float64 _FillValue NaN;
    String bcodmo_name "d15N_bio";
    String description "D. gegenbauri (gonozooid); 15-Nitrogen isotopic fraction of wild caught Dolioletta gegenbauri gonozooids; Average of all animals captured per sample.";
    String long_name "D Geg Gonozooid 15 N";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/IRBO/";
    String units "per mil vs air N2";
  }
  D_geg_nurse_13C {
    Float32 _FillValue NaN;
    Float32 actual_range -20.1924, -20.1924;
    String bcodmo_name "delta13C";
    String description "D. gegenbauri (nurse); 13-Carbon isotopic fraction of wild caught Dolioletta gegenbauri nurses; Average of all animals captured per sample.";
    String long_name "D Geg Nurse 13 C";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/D13CMITX/";
    String units "per mil vs PDB standard";
  }
  D_geg_nurse_15N {
    Float32 _FillValue NaN;
    Float32 actual_range 4.4756, 4.4756;
    String bcodmo_name "d15N_bio";
    String description "D. gegenbauri (nurse). 15-Nitrogen isotopic fraction of wild caught Dolioletta gegenbauri gonozooids; Average of all animals captured per sample.";
    String long_name "D Geg Nurse 15 N";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/IRBO/";
    String units "per mil vs air N2";
  }
  D_geg_phorozooid_13C {
    Float64 _FillValue NaN;
    String bcodmo_name "delta13C";
    String description "D. gegenbauri (phorozooid); 13-Carbon isotopic fraction of wild caught Dolioletta gegenbauri phorozooids; Average of all animals captured per sample.";
    String long_name "D Geg Phorozooid 13 C";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P01/current/D13CMITX/";
    String units "per mil vs PDB standard";
  }
  D_geg_phorozooid_15N {
    Float64 _FillValue NaN;
    String bcodmo_name "d15N_bio";
    String description "D. gegenbauri (phorozooid). 15-Nitrogen isotopic fraction of wild caught Dolioletta gegenbauri phorozooids; Average of all animals captured per sample.";
    String long_name "D Geg Phorozooid 15 N";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P02/current/IRBO/";
    String units "per mil vs air N2";
  }
  D_geg_abund {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 16794.54;
    String bcodmo_name "abundance";
    String description "D. gegenbauri abundance; Average concentration of D. gegenbauri (all life phases) from 2 depth integrated oblique net tows.";
    String long_name "D Geg Abund";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "individuals M-3";
  }
  D_geg_abund_stdev {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 6964.96;
    String bcodmo_name "abundance";
    String description "D. gegenbauri abundance (Stdev); Standard deviation of D. gegenbauri (all life phases) from 2 depth integrated oblique net tows.";
    String long_name "D Geg Abund Stdev";
    String nerc_identifier "https://vocab.nerc.ac.uk/collection/P03/current/B070/";
    String units "individuals M-3";
  }
 }
  NC_GLOBAL {
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"Depth, temperature, salinity and in situ chlorophyll a salinity were recorded
during the cruise from the real-time CTD data feed, recorded in log books.
Complete CTD cast records are included as an independent dataset associated
with this deployment. Surface values were recorded during the period when the
CTD rosette entered the water and were logged once values had stabilized. Near
bottom values were logged when CTD had reached its maximum deployment depth
and values stabilized.
 
Extracted chlorophyll a and phaeophytin values were determined following
overnight extraction in 90% acetone essentially as described by Parsons et al.
(1984) after filtering 100 \\u2013 250 ml of water sample through either 0.2
microns (total) or 8 microns (> 8 microns) polycarbonate membrane filters.
Filtrations were conducted in a darkened room. Filtration times were kept to
less than 20 minutes per sample and less than 10 mm Hg vacuum. Following
filtration, filters were placed directly into clean extraction tubes and
stored frozen at -20\\u00baC. Filters were extracted and analyzed within one
week of collection. Fluorescence was measured using a 10AU Turner Designs
fluorometer that was calibrated regularly using a chlorophyll standard
solution (Sigma Chl std cat #C6144 \\u2013 1 mg). Standard curves were prepared
as a 12-point dilution series from 0.05 \\u2013 500 micrograms L-1.
 
Water particulate organic matter (POC and PON) concentrations and isotopic
composition were estimated from water samples (200 \\u2013 500 ml) filtered
through pre-combusted Whatman GF/F filters. Filters were dried and stored at
60 deg.C until analysis.
 
Organic matter (C and N) isotopic composition of animals was also estimated.
Individual animals were placed in 8x10 mm tin cups (Elemental Microanalysis)
with a minimum of fluid, and dried at 60\\u00baC for at least 48 hours prior to
analysis. Samples were stored in 48-well plates at 60\\u00baC prior to final
preparation.
 
Sample analysis for %C, % N, d13C and d15N were performed on a ThermoFisher
Delta V plus isotope ratio mass spectrometer interfaced to a Thermo Flash
Elemental analyzer (Fry 1992). Isotopic and elemental composition calibrations
were performed using commercially available powdered chitin (Sigma Chemical),
which in turn had been calibrated against a variety of international (USGS 40
Glutamic Acid) and commercial (Elemental Microanalysis B2151 and B2155)
isotopic and compositional standards. Chitin standards were run at the start
of each analysis across the range of C amounts anticipated to be present in
the samples, and every 10 samples as a drift check.";
    String awards_0_award_nid "641282";
    String awards_0_award_number "OCE-1459293";
    String awards_0_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1459293";
    String awards_0_funder_name "NSF Division of Ocean Sciences";
    String awards_0_funding_acronym "NSF OCE";
    String awards_0_funding_source_nid "355";
    String awards_0_program_manager "Michael E. Sieracki";
    String awards_0_program_manager_nid "50446";
    String awards_1_award_nid "641288";
    String awards_1_award_number "OCE-1459510";
    String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1459510";
    String awards_1_funder_name "NSF Division of Ocean Sciences";
    String awards_1_funding_acronym "NSF OCE";
    String awards_1_funding_source_nid "355";
    String awards_1_program_manager "Michael E. Sieracki";
    String awards_1_program_manager_nid "50446";
    String cdm_data_type "Other";
    String comment 
"Doliolid Diet lab experiments: carbon and nitrogen content from water and doliolids 
 \tRV/Savannah cruises 2015-2017 
 \tSouth Atlantic Bight, Mid-Continental Shelf 
   PI: M. Frischer (UGa), D. Gibson (Hampton U) 
   version: 2   
   version date: 2019-06-06 
          replaces version 1 [2017-04-25: 2015 data only]";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_email "info@bco-dmo.org";
    String creator_name "BCO-DMO";
    String creator_type "institution";
    String creator_url "https://www.bco-dmo.org/";
    String data_source "extract_data_as_tsv version 2.3  19 Dec 2019";
    String date_created "2017-04-25T20:01:16Z";
    String date_modified "2020-01-30T14:12:19Z";
    String defaultDataQuery "&amp;time&lt;now";
    String doi "10.1575/1912/bco-dmo.692279.2";
    Float64 Easternmost_Easting -80.097;
    Float64 geospatial_lat_max 31.9298;
    Float64 geospatial_lat_min 29.9447;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -80.097;
    Float64 geospatial_lon_min -81.1802;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 45.9;
    Float64 geospatial_vertical_min 5.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2024-11-08T06:10:10Z (local files)
2024-11-08T06:10:10Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_692279.das";
    String infoUrl "https://www.bco-dmo.org/dataset/692279";
    String institution "BCO-DMO";
    String instruments_0_acronym "Niskin bottle";
    String instruments_0_dataset_instrument_nid "692456";
    String instruments_0_description "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.";
    String instruments_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/";
    String instruments_0_instrument_name "Niskin bottle";
    String instruments_0_instrument_nid "413";
    String instruments_1_acronym "CTD";
    String instruments_1_dataset_instrument_nid "692365";
    String instruments_1_description "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.";
    String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String instruments_1_instrument_name "CTD profiler";
    String instruments_1_instrument_nid "417";
    String instruments_2_acronym "Turner Fluorometer -10AU";
    String instruments_2_dataset_instrument_nid "768819";
    String instruments_2_description "The Turner Designs 10-AU Field Fluorometer is used to measure Chlorophyll fluorescence.  The 10AU Fluorometer can be set up for continuous-flow monitoring or discrete sample analyses. A variety of compounds can be measured using application-specific optical filters available from the manufacturer. (read more from Turner Designs, turnerdesigns.com, Sunnyvale, CA, USA)";
    String instruments_2_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0393/";
    String instruments_2_instrument_name "Turner Designs Fluorometer -10-AU";
    String instruments_2_instrument_nid "464";
    String instruments_2_supplied_name "10AU Turner Designs fluorometer";
    String instruments_3_acronym "IR Mass Spec";
    String instruments_3_dataset_instrument_description "A ThermoFisher Delta V plus isotope ratio mass spectrometer interfaced to a Thermo Flash Elemental analyzer was used for isotope carbon and nitrogen analyses.";
    String instruments_3_dataset_instrument_nid "768820";
    String instruments_3_description "The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer).";
    String instruments_3_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB16/";
    String instruments_3_instrument_name "Isotope-ratio Mass Spectrometer";
    String instruments_3_instrument_nid "469";
    String instruments_3_supplied_name "ThermoFisher Delta V";
    String instruments_4_dataset_instrument_description "Sample analysis for %C, %N , d13C and d15N were performed on a ThermoFisher Delta V plus isotope ratio mass spectrometer interfaced to a Thermo Flash Elemental analyzer.";
    String instruments_4_dataset_instrument_nid "768821";
    String instruments_4_description "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.";
    String instruments_4_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/LAB01/";
    String instruments_4_instrument_name "Elemental Analyzer";
    String instruments_4_instrument_nid "546339";
    String instruments_4_supplied_name "Thermo Flash Elemental analyzer";
    String keywords "abund, alt_cruise_id, altimetry, bco, bco-dmo, biological, bot, bottom, cast, chemical, chemistry, chla_bottom_fluor, chla_nr_bot_extr, chla_surface_fluor, chlorophyll, concentration, concentration_of_chlorophyll_in_sea_water, cruise, cruise_id, D_geg_abund, D_geg_abund_stdev, D_geg_gonozooid_13C, D_geg_gonozooid_15N, D_geg_nurse_13C, D_geg_nurse_15N, D_geg_phorozooid_13C, D_geg_phorozooid_15N, data, dataset, date, depth, deviation, dmo, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, erddap, extr, geg, gonozooid, gt8uml, gt8uml_chla_nr_bot_extr, gt8uml_phaeo_nr_bot_extr, laboratory, latitude, local, longitude, lt10um, lt10um_POC_13C, lt10um_POC_moles, lt10um_POC_ug, lt10um_PON_15N, lt10um_PON_moles, lt10um_PON_ug, management, moles, nurse, ocean, oceanography, oceans, office, phaeo, phaeo_total_nr_bot_extr, phorozooid, poc, POC_13C, POC_moles, POC_ug, pon, PON_15N, PON_moles, PON_ug, preliminary, sal, sal_bottom, sal_surface, satellite, science, sea, seawater, standard, standard deviation, stdev, surface, temp_bottom, temp_surface, temperature, time, total, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "https://www.bco-dmo.org/dataset/692279/license";
    String metadata_source "https://www.bco-dmo.org/api/dataset/692279";
    Float64 Northernmost_Northing 31.9298;
    String param_mapping "{'692279': {'lat': 'flag - latitude', 'depth': 'flag - depth', 'lon': 'flag - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/692279/parameters";
    String people_0_affiliation "Skidaway Institute of Oceanography";
    String people_0_affiliation_acronym "SkIO";
    String people_0_person_name "Marc E. Frischer";
    String people_0_person_nid "51144";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Hampton University";
    String people_1_person_name "Dr Deidre M. Gibson";
    String people_1_person_nid "641291";
    String people_1_role "Co-Principal Investigator";
    String people_1_role_type "originator";
    String people_2_affiliation "Woods Hole Oceanographic Institution";
    String people_2_affiliation_acronym "WHOI BCO-DMO";
    String people_2_person_name "Nancy Copley";
    String people_2_person_nid "50396";
    String people_2_role "BCO-DMO Data Manager";
    String people_2_role_type "related";
    String project "Doliolid Diet";
    String projects_0_acronym "Doliolid Diet";
    String projects_0_description 
"Project description from NSF award abstract:
Gelatinous (soft-bodied) zooplankton can play a crucial role in food webs and in cycling of materials in the world's oceans, and it has been suggested that they may become even more important in the future. However, because they are so difficult to study, gelatinous species remain poorly understood. This is especially true for smaller filter feeding gelatinous animals such as pelagic tunicates (salps, larvaceans, and doliolids). For example, it remains unclear what and how much these abundant filter feeders eat in nature and who eats them. This project will address this large and significant knowledge gap by using a combination of new and traditional methods to investigate the diet of the gelatinous pelagic tunicate Dolioletti gegenbauri, a species common on productive continental shelves such as the South Atlantic Bight. This project will also help train the next generation of ocean scientists to be competent in classical biology, modern molecular biology, and ecosystem modeling. Training will also focus on increasing representation of African Americans in the future science, technology, engineering, and math (STEM) workforce.
This study will provide the first quantitative estimates of the in situ diet of a key continental shelf gelatinous zooplankton species, the doliolid Dolioletta gegenbauri. Large blooms of doliolids have the potential to control the trophic structure of shelf pelagic ecosystems by shunting primary production to the microbial food web and by limiting copepod production via the consumption of their eggs. The long-term objective is to understand the ecological role and significance of doliolids in continental shelf pelagic ecosystems, specifically the underlying processes that lead to their high level of spatial and temporal patchiness. The basic questions to be addressed here include: What do doliolids eat, in situ, at different life stages? Are early life stages of larger metazoans important components of their diets? Do doliolids act as trophic cascade agents promoting primary production and phytoplankton diversity? Because of methodological challenges, there have not yet been definitive studies addressing these fundamental questions. In this project, the investigators will conduct field-based studies that will combine state-of-the art molecular techniques with more traditional methods in zooplankton ecology to answer questions about trophic interactions. Monthly oceanographic expeditions in the South Atlantic Bight will allow the research team to study wild doliolids at different time points in their life cycle and under different plankton bloom conditions. Application of recently developed molecular diagnostic assays will enable the quantitative description of the diversity and quantity of prey consumed, unbiased by experimental manipulation. Additional experimental and theoretical modeling will allow the investigators to link these data with larger ecological significance and scale.";
    String projects_0_end_date "2018-02";
    String projects_0_geolocation "South Atlantic Bight";
    String projects_0_name "The cryptic diet of the globally significant pelagic tunicate Dolioletta gegenbauri (Uljanin, 1884.)";
    String projects_0_project_nid "641283";
    String projects_0_start_date "2015-03";
    String publisher_name "Biological and Chemical Oceanographic Data Management Office (BCO-DMO)";
    String publisher_type "institution";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 29.9447;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String subsetVariables "D_geg_gonozooid_13C,D_geg_gonozooid_15N,D_geg_phorozooid_13C,D_geg_phorozooid_15N";
    String summary "Doliolid abundance, carbon and nitrogen content, chlorophyll-a, temperature, salinity, and depth from CTD casts from 25 RV Savannah cruises at the South Atlantic Bight, 2015-2017.";
    String title "[Doliolid diet: lab chlorophyll, carbon, nitrogen] - Doliolid abundance, carbon and nitrogen content, chlorophyll-a, temperature, salinity, and depth from CTD casts from 25 RV Savannah cruises at the South Atlantic Bight, 2015-2017 (The cryptic diet of the globally significant pelagic tunicate Dolioletta gegenbauri (Uljanin, 1884.))";
    String version "2";
    Float64 Westernmost_Easting -81.1802;
    String xml_source "osprey2erddap.update_xml() v1.3";
  }
}
Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)
Data Access Protocol (DAP) (external link)
and its selection constraints (external link)
The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.
(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.
Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").
For details, see the tabledap Documentation.