Data Access Form

Dataset Title:	Current profiler data in the Raritan River.
Institution:	Institute of Marine and Coastal Science, Rutgers (Dataset ID: RARITAN_REALTIME_CURRENT_2017)
Information:	Summary \| License \| Metadata \| Background \| Make a graph

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Dimensions	Size	Spacing
time (UTC)	736098	2m 20s (uneven)

range (range from ADCP, m)	10	0.5555556 (even)

Grid Variables (which always also download all of the dimension variables)

u (eastward water velocity, cm s-1)

v (northward water velocity, cm s-1)

ru (cross channel velocity, cm s-1)

rv (along channel water velocity, cm s-1)

w (vertical water velocity, cm s-1)

a1 (beam 1 echo intensity, counts)

a2 (beam 2 echo intensity, counts)

a3 (beam 3 echo intensity, counts)

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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.49210208e+9, 1.595455077e+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";
  }
  range {
    Float64 actual_range 0.5, 5.5;
    String ioos_category "Location";
    String long_name "range from ADCP";
    String standard_name "depth";
    String units "m";
  }
  u {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum -50.0;
    String ioos_category "Currents";
    String long_name "eastward water velocity";
    String standard_name "eastward_sea_water_velocity";
    String units "cm s-1";
  }
  v {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum -50.0;
    String ioos_category "Currents";
    String long_name "northward water velocity";
    String standard_name "northward_sea_water_velocity";
    String units "cm s-1";
  }
  ru {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum -50.0;
    String comment "Positive Away From Boathouse";
    String ioos_category "Currents";
    String long_name "cross channel velocity";
    String standard_name "cross_channel_sea_water_velocity";
    String units "cm s-1";
  }
  rv {
    Float64 colorBarMaximum 50.0;
    Float64 colorBarMinimum -50.0;
    String comment "Positve in the direction of river flow";
    String ioos_category "Currents";
    String long_name "along channel water velocity";
    String standard_name "along_channel_sea_water_velocity";
    String units "cm s-1";
  }
  w {
    Float64 colorBarMaximum 5.0;
    Float64 colorBarMinimum -5.0;
    String ioos_category "Currents";
    String long_name "vertical water velocity";
    String standard_name "upward_sea_water_velocity";
    String units "cm s-1";
  }
  a1 {
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum 100.0;
    String ioos_category "Unknown";
    String long_name "beam 1 echo intensity";
    String units "counts";
  }
  a2 {
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum 100.0;
    String ioos_category "Unknown";
    String long_name "beam 2 echo intensity";
    String units "counts";
  }
  a3 {
    Float64 colorBarMaximum 200.0;
    Float64 colorBarMinimum 100.0;
    String ioos_category "Unknown";
    String long_name "beam 3 echo intensity";
    String units "counts";
  }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.6.2,hdf5=1.10.5";
    String cdm_data_type "Grid";
    String Conventions "CF-1.6, COARDS, ACDD-1.3";
    String defaultGraphQuery "u&.draw=surface&.vars=range,time,u";
    String History "File initialized on April 17, 2017 by EJH using process_argonaut.py";
    String history 
"2024-11-24T18:07:29Z (local files)
2024-11-24T18:07:29Z https://tds.marine.rutgers.edu/erddap/griddap/RARITAN_REALTIME_CURRENT_2017.das";
    String infoUrl "https://marine.rutgers.edu/main/";
    String institution "Institute of Marine and Coastal Science, Rutgers";
    String keywords "beam, circulation, currents, data, Earth Science > Oceans > Ocean Circulation > Ocean Currents, eastward, eastward_sea_water_velocity, echo, intensity, local, northward, northward_sea_water_velocity, ocean, oceans, range, sea, seawater, source, time, u, upward, upward_sea_water_velocity, v, velocity, vertical, w, water";
    String keywords_vocabulary "GCMD Science Keywords";
    Float64 Latitude 40.4887;
    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 Longitude -74.4337;
    String sourceUrl "(local files)";
    String standard_name_vocabulary "CF Standard Name Table v29";
    String summary "Data Collected from mooring deployed near the Rutgers Boathouse";
    String time_coverage_end "2020-07-22T21:57:57Z";
    String time_coverage_start "2017-04-13T16:48:00Z";
    String Title "Realtime ADCP measurements in Raritan River by Rutgers Boathouse";
    String title "Current profiler data in the Raritan River.";
  }
}

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its projection 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. It makes 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.

griddap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.

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