Data Access Form

Dataset Title:	Bottom Trawl Survey OW1 Tows
Institution:	Rutgers University (Dataset ID: bottom_trawl_survey_ow1_tows)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Files \| Make a graph

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Variable	Minimum	Maximum
index	0	79
time (Date, UTC)	2023-07-08T00:00:00Z	2023-09-14T00:00:00Z

cruise (cruise id)	"BT2301"	"BT2302"
station (station id)	"C01"	"I28"
latitude (degrees_north)	38.793223166666664	39.206035666666665

end_latitude (Latitude, degrees_north)	38.80146	39.20523816666667
longitude (degrees_east)	-74.56951033333333	-74.13821516666667

end_longitude (Longitude, degrees_east)	-74.57849316666666	-74.12344316666666

Server-side Functions

distinct()

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File type: (more information)

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  index {
    Float64 _FillValue 9223372036854775807;
    Float64 actual_range 0, 79;
    String ioos_category "Unknown";
    String long_name "Index";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6887744e+9, 1.6946496e+9;
    String axis "T";
    String calendar "proleptic_gregorian";
    String ioos_category "Time";
    String long_name "Date";
    String source_name "date";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  cruise {
    String description "unique identifier for cruise";
    String ioos_category "Identifier";
    String long_name "cruise id";
  }
  station {
    String comment "C/I- stands for Control and Impact and designates the type of station we are at, Control being the open sand bottom that won’t get turbines placed there, and Impact being the OW1 Wind Farm lease area.";
    String ioos_category "Identifier";
    String long_name "station id";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 38.793223166666664, 39.206035666666665;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "latitude coordinates entered at start of trawl";
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "start_latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  end_latitude {
    Float64 _FillValue NaN;
    Float64 actual_range 38.80146, 39.20523816666667;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "latitude coordinates entered at end of trawl";
    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 -74.56951033333333, -74.13821516666667;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String comment "longitude coordinates entered at start of trawl";
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "start_longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  end_longitude {
    Float64 _FillValue NaN;
    Float64 actual_range -74.57849316666666, -74.12344316666666;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String comment "longitude coordinates entered at end of trawl";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String acknowledgement "Funding provided by Orsted.";
    String cdm_data_type "Point";
    String comment "Survey performed aboard F/V Darana R with Captains Robert Rhule and James Rhule";
    String contributor_name "Jason Morson, Doug Zemeckis, Thomas Grothues, Joey O'Brien, Sam Chew Chin, Jamie Wilson, Helaina McKeon, Andre Ascura, Kaycee Coleman, Laura Nazzaro";
    String contributor_role "Project Co-Principal Investigator, Project Co-Principal Investigator, Project Lead Principal Investigator and Project Fisheries Scientist, Lab Manager, Fisheries Scientist, Fisheries Observer, Fisheries Observer, Technician, Project Management, Data Management";
    String Conventions "ACDD 1.3, COARDS, CF-1.6";
    String creator_email "ecosystemdata@marine.rutgers.edu";
    String creator_institution "Rutgers University";
    String creator_name "Rutgers Marine Ecosystem Data Team";
    String creator_type "group";
    String creator_url "https://marine.rutgers.edu/main/";
    Float64 Easternmost_Easting -74.13821516666667;
    String featureType "Point";
    String geospatial_bounds_crs "EPSG:6347";
    Float64 geospatial_lat_max 39.206035666666665;
    Float64 geospatial_lat_min 38.793223166666664;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -74.13821516666667;
    Float64 geospatial_lon_min -74.56951033333333;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_positive "up";
    String history 
"2025-06-21T21:15:45Z (local files)
2025-06-21T21:15:45Z https://rowlrs-data.marine.rutgers.edu/erddap/tabledap/bottom_trawl_survey_ow1_tows.html";
    String id "bottom_trawl_survey_ow1_tows";
    String infoUrl "https://rowlrs.marine.rutgers.edu/";
    String institution "Rutgers University";
    String keywords "bottom, cruise, data, date, end_latitude, end_longitude, identifier, index, latitude, longitude, ow1, rutgers, station, survey, time, tows, trawl, university";
    String license "see Data Use Agreement";
    Float64 Northernmost_Northing 39.206035666666665;
    String platform_name "F/V Darana R";
    String program "Ocean Wind 01 Fisheries Monitoring Plan";
    String project "Ocean Wind 01 Fisheries Monitoring Plan, Bottom Trawl";
    String publisher_email "ecosystemdata@marine.rutgers.edu";
    String publisher_institution "Rutgers University";
    String publisher_name "Rutgers Marine Ecosystem Data Team";
    String publisher_type "group";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 38.793223166666664;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Fisheries Monitoring in Ocean Wind 01. Two seasonal pre-construction surveys. Twenty tows conducted in the lease area and twenty in the control area each season (160/year total). Tows conducted at three knots for 20 minutes. Trawl data will inform relative biomass (kg/tow) by species, size frequency by species, condition index (length-weight) by species, community assemblage, and gut content of a subset of species.";
    String time_coverage_end "2023-09-14T00:00:00Z";
    String time_coverage_start "2023-07-08T00:00:00Z";
    String title "Bottom Trawl Survey OW1 Tows";
    Float64 Westernmost_Easting -74.56951033333333;
  }
}

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.