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Dataset Title:  WCO - L4 CTD Data Subscribe RSS
Institution:  Plymouth Marine Laboratory   (Dataset ID: L4_6eaa_6254_2678)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Subset | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
   or a List of Values ?
   Maximum ?
 
 Cruise ?      
   - +  ?
 Station ?      
   - +  ?
 Type ?      
   - +  ?
 time (Date (UTC), UTC) ?          2002-01-07T12:00:00.000Z    2025-11-25T09:59:14.000Z
  < slider >
 latitude (degrees_north) ?          -19.61517    52.22815
  < slider >
 longitude (degrees_east) ?          -4.38115    1.63837
  < slider >
 depth (m) ?          0.25    56.5
  < slider >
 Temperature (degC) ?          -9.999    19.9001
 Transmission (%) ?          -999.0    100.2334
 PAR (uE/m2/s) ?          -999.0    6170.3
 Fluorescence (volts) ?          -999.0    389.1985
 Density (kg/m3) ?          -400.4028    1066.2969
 Oxygen (uM) ?          -999.0    612.265
 Salinity (PSU) ?          -13.6223    36.2767
 Turbidity (NTU) ?          -999.0    197.2547
 
Server-side Functions ?
 distinct() ?
? ("Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.Hover here to see a list of options. Click on an option to select it.")

File type: (more information)

(Documentation / Bypass this form ? )
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Cruise {
    String ioos_category "Unknown";
    String long_name "Cruise";
  }
  Station {
    String ioos_category "Identifier";
    String long_name "Station";
  }
  Type {
    String ioos_category "Unknown";
    String long_name "Type";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.0104048e+9, 1.764064754e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date (UTC)";
    String source_name "DateTime";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00.000Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range -19.61517, 52.22815;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -4.38115, 1.63837;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.25, 56.5;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  Temperature {
    Float32 actual_range -9.999, 19.9001;
    String ioos_category "Temperature";
    String long_name "Temperature";
    String units "degC";
  }
  Transmission {
    Float32 _FillValue NaN;
    Float32 actual_range -999.0, 100.2334;
    String ioos_category "Optical Properties";
    String long_name "Transmission";
    String units "%";
  }
  PAR {
    Float32 _FillValue NaN;
    Float32 actual_range -999.0, 6170.3;
    Float64 colorBarMaximum 70.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Optical Properties";
    String long_name "Downwelling Photosynthetic Photon Radiance In Sea Water";
    String standard_name "downwelling_photosynthetic_photon_radiance_in_sea_water";
    String units "uE/m2/s";
  }
  Fluorescence {
    Float32 _FillValue NaN;
    Float32 actual_range -999.0, 389.1985;
    String ioos_category "Optical Properties";
    String long_name "Fluorescence";
    String units "volts";
  }
  Density {
    Float64 actual_range -400.4028, 1066.2969;
    String ioos_category "Physical Oceanography";
    String long_name "Density";
    String units "kg/m3";
  }
  Oxygen {
    Float32 _FillValue NaN;
    Float32 actual_range -999.0, 612.265;
    String ioos_category "Dissolved O2";
    String long_name "Oxygen";
    String units "uM";
  }
  Salinity {
    Float32 actual_range -13.6223, 36.2767;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "Sea Water Practical Salinity";
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  Turbidity {
    Float32 _FillValue NaN;
    Float32 actual_range -999.0, 197.2547;
    String ioos_category "Unknown";
    String long_name "Turbidity";
    String units "NTU";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Plymouth Marine Laboratory";
    String creator_url "https://www.westernchannelobservatory.org.uk/l4_ctdf/index.php";
    Float64 Easternmost_Easting 1.63837;
    Float64 geospatial_lat_max 52.22815;
    Float64 geospatial_lat_min -19.61517;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 1.63837;
    Float64 geospatial_lon_min -4.38115;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 56.5;
    Float64 geospatial_vertical_min 0.25;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2025-12-06T04:34:39Z (local files)
2025-12-06T04:34:39Z https://erddap.eofrom.space/erddap/tabledap/L4_6eaa_6254_2678.html";
    String infoUrl "https://www.westernchannelobservatory.org.uk/l4_ctdf/index.php";
    String institution "Plymouth Marine Laboratory";
    String keywords "active, available, conductivity, cruise, ctd, data, date, DateTime, density, depth, dissolved, dissolved o2, downwelling, downwelling_photosynthetic_photon_radiance_in_sea_water, earth, Earth Science > Oceans > Ocean Optics > Photosynthetically Active Radiation, Earth Science > Oceans > Ocean Optics > Radiance, Earth Science > Oceans > Salinity/Density > Salinity, fluorescence, identifier, L4, laboratory, latitude, longitude, marine, O2, ocean, oceanography, oceans, optical, optical properties, optics, oxygen, par, photon, photosynthetic, photosynthetically, physical, physical oceanography, plymouth, practical, properties, radiance, radiation, salinity, science, sea, sea_water_practical_salinity, seawater, sonde, station, temperature, time, transmission, turbidity, type, water, wco";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "OGL - https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/";
    Float64 Northernmost_Northing 52.22815;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -19.61517;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "Cruise, Station, Type";
    String summary "WCO - L4 Conductivity, Temperature, Depth (CTD). These data are collected using sensors attached to our sampling rosette, by the R/V Plymouth Quest, at station L4 which is located 7 nautical miles south-south-west of Plymouth. The sensors include a SeaBird SBE 19+, a transmissometer, a Chelsea Photosynthetically Available Radiation (PAR) sensor, a fluorometer and an oxygen optode.";
    String time_coverage_end "2025-11-25T09:59:14.000Z";
    String time_coverage_start "2002-01-07T12:00:00.000Z";
    String title "WCO - L4 CTD Data";
    Float64 Westernmost_Easting -4.38115;
  }
}

 

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
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.


 
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