Commercial Fisheries Research Foundation
ERDDAP: Easier Access to Cooperative Fisheries Research Data

Make A Graph

Dataset Title:	Demersal Glider Observations
Institution:	IOOS (Dataset ID: demersal_gliders_aggregated)
Range:	longitude = -75.70187 to -65.62125°E, latitude = 34.62698 to 44.28031°N, depth = 9.58 to 1137.0m, time = 2012-10-25T19:58:56Z to 2026-02-03T20:01:04Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

To work correctly, this web page requires that JavaScript be enabled in your browser. Please:
1) Enable JavaScript in your browser:
      • Chrome: "Settings : Advanced : Privacy and security : Site Settings : JavaScript"
      • Firefox: (it should be always on!)"
      • Opera: "Settings : Websites : JavaScript"
      • Safari: "Safari : Preferences : Security : Enable JavaScript"
2) Reload this web page.

Graph Type:

X Axis:

Y Axis:

Color:

Constraints

Optional
Constraint #1

Optional
Constraint #2

Server-side Functions

distinct()

Hover here to see a list of options. Click on an option to select it.

Graph Settings

Marker Type:

Size:

Color:

Color Bar:

Continuity:

Scale:

Minimum:

Maximum:

N Sections:

Draw land mask:

Y Axis Minimum:

Maximum:

(Please be patient. It may take a while to get the data.)

Optional:
Then set the File Type: (File Type information)
and

or view the URL:
(Documentation / Bypass this form

)

Click on the map to specify a new center point.

Zoom:

Time range:

[The graph you specified. Please be patient.]

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:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.351195136e+9, 1.770148864e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  institution {
    String comment "Institution that collected the data";
    String coordinates "time, latitude, longitude";
    String long_name "Institution";
    String units "1";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 _FillValue NaN;
    Float32 actual_range 34.62698, 44.280308;
    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 _FillValue NaN;
    Float32 actual_range -75.70187, -65.62125;
    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 _FillValue NaN;
    Float32 actual_range 9.58, 1137.0;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String coordinates "time, latitude, longitude";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  bottom_depth {
    Float32 _FillValue NaN;
    Float32 actual_range 9.0, 1264.0;
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String comment "Bottom depth was calculated using the sample coordinates and GEBCO's gridded global bathymetry (https://download.gebco.net/)";
    String coordinates "time, latitude, longitude";
    String description "Depth of water column at the sampling location";
    String long_name "Bottom Depth";
    String standard_name "sea_floor_depth";
    String units "m";
  }
  dissolved_oxygen {
    Float32 _FillValue NaN;
    Float32 actual_range 0.0, 11.163;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "time, latitude, longitude";
    String description "Bottom DO is the median of the values within the deepest 1m of a glider profile, provided the sampling depth was no shallower than the bottom 20% of total water column depth.";
    String long_name "Bottom Dissolved Oxygen";
    Float32 missing_value NaN;
    String standard_name "mass_concentration_of_oxygen_in_sea_water";
    String units "mg L-1";
  }
  temperature {
    Float32 _FillValue NaN;
    Float32 actual_range 2.29, 28.63;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum -10.0;
    String coordinates "time, latitude, longitude";
    String description "Bottom temperature is the median of the values within the deepest 1m of a glider profile, provided the sampling depth was no shallower than the bottom 20% of total water column depth.";
    String long_name "Bottom Temperature";
    String units "degree_C";
  }
  salinity {
    Float32 _FillValue NaN;
    Float32 actual_range 20.989, 270.821;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String coordinates "time, latitude, longitude";
    String description "Bottom salinity is the median of the values within the deepest 1 m of a glider profile.";
    String long_name "Daily Average Bottom Salinity";
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  grid_id {
    UInt32 _ChunkSizes 272;
    Int32 _FillValue -999;
    Int32 actual_range 5385, 27202;
    String coordinates "lat lon";
    String description "FISHBOT Grid ID for identifier as fishbot precursor.";
    String long_name "FISHBOT Grid ID";
    Int32 missing_value -999;
    String units "1";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String comment "Synthesis of bottom water data (DO, temperature, salinity) from glider-based measurements downloaded from the IOOS Glider DAC https://gliders.ioos.us/erddap/index.html spatially limited to the U.S. Northeast Shelf.";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "data@cfrfoundation.org";
    String creator_name "IOOS";
    String creator_type "institution";
    String creator_url "https://ioos.noaa.gov/";
    String date_created "2026-02-03T22:07:55Z";
    String date_modified "2026-02-03T22:07:55Z";
    String deployment "whoi_406-20160902T1700";
    Float64 Easternmost_Easting -65.62125;
    String featureType "Point";
    Float64 geospatial_lat_max 44.28031;
    Float64 geospatial_lat_min 34.62698;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -65.62125;
    Float64 geospatial_lon_min -75.70187;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 1137.0;
    Float64 geospatial_vertical_min 9.58;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2026-02-06T03:46:35Z (local files)
2026-02-06T03:46:35Z https://erddap.ondeckdata.com/tabledap/demersal_gliders_aggregated.das";
    String infoUrl "https://gliders.ioos.us/erddap/info/index.html?page=1&itemsPerPage=1000";
    String institution "IOOS";
    String keywords "bathymetry, bottom, bottom_depth, chemistry, concentration, data, demersal, density, depth, dissolved, DO_bottom, earth, Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Salinity/Density > Salinity, fishbot, floor, glider, institution, integrated, ioos, latitude, longitude, mass, mass_concentration_of_oxygen_in_sea_water, O2, observations, observing, ocean, oceans, oxygen, practical, salinity, salinity_bottom, science, sea, sea_floor_depth, sea_water_practical_salinity, seafloor, seawater, system, temperature, temperature_bottom, time, topography, water";
    String keywords_vocabulary "GCMD Science Keywords";
    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.";
    Float64 Northernmost_Northing 44.28031;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 34.62698;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "institution, latitude, longitude, grid_id";
    String summary "Aggregated bottom data for salinity, temperature, and dissolved oxygen from gliders deplyoed in the MAB. This is a precursor dataset for FISHBOT";
    String time_coverage_end "2026-02-03T20:01:04Z";
    String time_coverage_start "2012-10-25T19:58:56Z";
    String title "Demersal Glider Observations";
    Float64 Westernmost_Easting -75.70187;
  }
}

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.

ERDDAP, Version 2.27.0
Disclaimers | Privacy Policy | Contact