Accessing BCO-DMO data
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Dataset Title:  CTD data from R/V Endeavor cruises EN321 and EN325 to Georges Bank, 1999   RSS
Institution:  BCO-DMO   (Dataset ID: bcodmo_dataset_2301)
Range: longitude = -70.7237 to -66.1997°E, latitude = 40.7873 to 42.2998°N
Information:  Summary ? | License ? | ISO 19115 | Metadata | Background (external link) | Subset | Data Access Form | Files
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  cruiseid {
    String description "Originator's cruise identification";
    String ioos_category "Unknown";
    String long_name "Cruiseid";
  year {
    Int16 _FillValue 32767;
    Int16 actual_range 1999, 1999;
    String description "4-digit year (i.e. 1995)";
    String ioos_category "Time";
    String long_name "Year";
  cast {
    String description "CTD cast number";
    String ioos_category "Unknown";
    String long_name "Cast";
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 40.7873, 42.2998;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String description "latitude, negative = south";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -70.7237, -66.1997;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String description "longitude, negative = west";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  month_gmt {
    String description "month of year";
    String ioos_category "Time";
    String long_name "Month Gmt";
    String units "GMT";
  day_gmt {
    String description "day of month";
    String ioos_category "Time";
    String long_name "Day Gmt";
    String units "GMT";
  time_gmt {
    String description "time in gmt, reported as hhmm.mm";
    String ioos_category "Time";
    String long_name "Time Gmt";
    String units "GMT";
  press {
    Float64 _FillValue NaN;
    Float64 actual_range 1.0, 266.0;
    String description "depth of s ample, reported as pressure";
    String ioos_category "Unknown";
    String long_name "Press";
    String units "decibars";
  cond {
    Float32 _FillValue NaN;
    Float32 actual_range 2.894709, 4.212124;
    String description "conductivity";
    String ioos_category "Unknown";
    String long_name "Cond";
    String units "seimens/meter";
  temp {
    Float32 _FillValue NaN;
    Float32 actual_range 3.0059, 16.8065;
    String description "temperature";
    String ioos_category "Temperature";
    String long_name "Temperature";
    String units "deg. C, ITS90";
  trans {
    Float32 _FillValue NaN;
    Float32 actual_range 64.56, 91.39;
    String description "light transmission";
    String ioos_category "Unknown";
    String long_name "Trans";
    String units "percent";
  par_v {
    Float32 _FillValue NaN;
    Float32 actual_range -0.03754, 117.3;
    String description "photosynthetically available radiation";
    String ioos_category "Optical Properties";
    String long_name "Par V";
    String units "volts";
  flvolt {
    Float32 _FillValue NaN;
    Float32 actual_range -0.006461, 10.03;
    String description "fluorescence";
    String ioos_category "Unknown";
    String long_name "Flvolt";
    String units "volts";
  sal {
    Float32 _FillValue NaN;
    Float32 actual_range 31.5793, 35.0881;
    String description "salinity";
    String ioos_category "Unknown";
    String long_name "Sal";
    String units "PSS-78";
  sigma_t {
    Float32 _FillValue NaN;
    Float32 actual_range 25.1395, 27.2963;
    String description "sigma-t";
    String ioos_category "Unknown";
    String long_name "Sigma T";
    String units "kg/m3-1000";
  o2 {
    Float32 _FillValue NaN;
    Float32 actual_range 3.64315, 9.73786;
    String description "dissolved oxygen";
    String ioos_category "Dissolved O2";
    String long_name "O2";
    String units "milliliters/liter";
  nbin {
    Float32 _FillValue NaN;
    Float32 actual_range 2.0, 160.0;
    String description "number of data cycles per press/bin average";
    String ioos_category "Unknown";
    String long_name "Nbin";
    String access_formats ".htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson";
    String acquisition_description 
"The data reported here are from the primary CTD sensors. However, this data
set also contains conductivity, temperature and related computed parameters
from secondary sensors.";
    String awards_0_award_nid "54626";
    String awards_0_award_number "unknown GB NOAA";
    String awards_0_funder_name "National Oceanic and Atmospheric Administration";
    String awards_0_funding_acronym "NOAA";
    String awards_0_funding_source_nid "352";
    String awards_1_award_nid "54663";
    String awards_1_award_number "OCE-9806375";
    String awards_1_data_url "http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=9806375";
    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 "Dr Phillip  R. Taylor";
    String awards_1_program_manager_nid "50451";
    String cdm_data_type "Other";
    String comment 
"CTD data from Dian Gifford's Georges Bank Cruises 
  See documentation for explanation of variables 
  CTDs 016 - 035 processed 24 Apr 03 - mda + lb";
    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 2.2d  13 Jun 2019";
    String date_created "2009-11-25T12:56:56Z";
    String date_modified "2019-01-30T16:03:53Z";
    String defaultDataQuery "&time";
    String doi "10.1575/1912/bco-dmo.2301.1";
    Float64 Easternmost_Easting -66.1997;
    Float64 geospatial_lat_max 42.2998;
    Float64 geospatial_lat_min 40.7873;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -66.1997;
    Float64 geospatial_lon_min -70.7237;
    String geospatial_lon_units "degrees_east";
    String history 
"2019-06-27T01:08:04Z (local files)
2019-06-27T01:08:04Z https://erddap.bco-dmo.org/tabledap/bcodmo_dataset_2301.das";
    String infoUrl "https://www.bco-dmo.org/dataset/2301";
    String institution "BCO-DMO";
    String instruments_0_acronym "CTD";
    String instruments_0_dataset_instrument_description "CTD measurements taken, CTD unit unidentified.";
    String instruments_0_dataset_instrument_nid "4100";
    String instruments_0_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_0_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String instruments_0_instrument_name "CTD profiler";
    String instruments_0_instrument_nid "417";
    String instruments_0_supplied_name "Conductivity, Temperature, Depth";
    String instruments_1_acronym "CTD Sea-Bird";
    String instruments_1_dataset_instrument_description "Sea Bird CTD, no specific unit identified. See also other SeaBird instruments listed under CTD.";
    String instruments_1_dataset_instrument_nid "4164";
    String instruments_1_description "Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.";
    String instruments_1_instrument_external_identifier "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String instruments_1_instrument_name "CTD Sea-Bird";
    String instruments_1_instrument_nid "447";
    String instruments_1_supplied_name "SeabirdCTD";
    String keywords "altimetry, available, bco, bco-dmo, biological, cast, chemical, cond, cruiseid, data, dataset, day, day_gmt, dissolved, dissolved o2, dmo, erddap, flvolt, laboratory, latitude, longitude, management, month, month_gmt, nbin, O2, oceanography, office, optical, optical properties, oxygen, par, par_v, photosynthetically, preliminary, press, properties, radiation, sal, satellite, sigma, sigma_t, temperature, time, time_gmt, trans, v, year";
    String license 
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
    String metadata_source "https://www.bco-dmo.org/api/dataset/2301";
    Float64 Northernmost_Northing 42.2998;
    String param_mapping "{'2301': {'lat': 'master - latitude', 'press': 'flag - depth', 'lon': 'master - longitude'}}";
    String parameter_source "https://www.bco-dmo.org/mapserver/dataset/2301/parameters";
    String people_0_affiliation "University of Rhode Island";
    String people_0_affiliation_acronym "URI-GSO";
    String people_0_person_name "Dr Dian  J. Gifford";
    String people_0_person_nid "50377";
    String people_0_role "Principal Investigator";
    String people_0_role_type "originator";
    String people_1_affiliation "Woods Hole Oceanographic Institution";
    String people_1_affiliation_acronym "WHOI BCO-DMO";
    String people_1_person_name "Ms Dicky Allison";
    String people_1_person_nid "50382";
    String people_1_role "BCO-DMO Data Manager";
    String people_1_role_type "related";
    String project "U.S. GLOBEC Georges Bank";
    String projects_0_acronym "GB";
    String projects_0_description 
"The U.S. GLOBEC Georges Bank Program is a large multi- disciplinary multi-year oceanographic effort. The proximate goal is to understand the population dynamics of key species on the Bank - Cod, Haddock, and two species of zooplankton (Calanus finmarchicus and Pseudocalanus) - in terms of their coupling to the physical environment and in terms of their predators and prey. The ultimate goal is to be able to predict changes in the distribution and abundance of these species as a result of changes in their physical and biotic environment as well as to anticipate how their populations might respond to climate change.
The effort is substantial, requiring broad-scale surveys of the entire Bank, and process studies which focus both on the links between the target species and their physical environment, and the determination of fundamental aspects of these species' life history (birth rates, growth rates, death rates, etc).
Equally important are the modelling efforts that are ongoing which seek to provide realistic predictions of the flow field and which utilize the life history information to produce an integrated view of the dynamics of the populations.
The U.S. GLOBEC Georges Bank Executive Committee (EXCO) provides program leadership and effective communication with the funding agencies.";
    String projects_0_geolocation "Georges Bank, Gulf of Maine, Northwest Atlantic Ocean";
    String projects_0_name "U.S. GLOBEC Georges Bank";
    String projects_0_project_nid "2037";
    String projects_0_project_website "http://globec.whoi.edu/globec_program.html";
    String projects_0_start_date "1991-01";
    String publisher_name "Ms Dicky Allison";
    String publisher_role "BCO-DMO Data Manager(s)";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 40.7873;
    String standard_name_vocabulary "CF Standard Name Table v29";
    String subsetVariables "year";
    String summary "CTD data from R/V Endeavor cruises EN321 and EN325 to Georges Bank, 1999";
    String title "CTD data from R/V Endeavor cruises EN321 and EN325 to Georges Bank, 1999";
    String version "1";
    Float64 Westernmost_Easting -70.7237;
    String xml_source "osprey2erddap.update_xml() v1.5-beta";


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.

Tabledap request URLs must be in the form
For example,
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.

ERDDAP, Version 1.82
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