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Dataset Title:	Global Drifter Program - Nonlooper Trajectories
Institution:	NOAA/AOML   (Dataset ID: drifter_nonloopers)
Range:	longitude = -179.999 to 180.0°E, latitude = -78.305 to 89.984°N
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Data Access Form | Files

 

Graph Type:  lines linesAndMarkers markers sticks vectors X Axis:  drogue id latitude longitude omega persist radius t u v Y Axis:  drogue id latitude longitude omega persist radius t u v Color:  drogue id latitude longitude omega persist radius t u v   Constraints Optional Constraint #1 Optional Constraint #2 drogue id latitude longitude omega persist radius t u v     != =~ <= >= = < >     != =~ <= >= = < > drogue id latitude longitude omega persist radius t u v     != =~ <= >= = < >     != =~ <= >= = < > drogue id latitude longitude omega persist radius t u v     != =~ <= >= = < >     != =~ <= >= = < > drogue id latitude longitude omega persist radius t u v     != =~ <= >= = < >     != =~ <= >= = < > drogue id latitude longitude omega persist radius t u v     != =~ <= >= = < >     != =~ <= >= = < >   Server-side Functions  distinct() orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" drogue id latitude longitude omega persist radius t u v drogue id latitude longitude omega persist radius t u v drogue id latitude longitude omega persist radius t u v drogue id latitude longitude omega persist radius t u v ")   Graph Settings Marker Type:  None Plus X Dot Square Filled Square Circle Filled Circle Up Triangle Filled Up Triangle Borderless Filled Square Borderless Filled Circle Borderless Filled Up Triangle  Size:  3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Color:  Color Bar:  BlackBlueWhite BlackGreenWhite BlackRedWhite BlackWhite BlueWhiteRed BlueWideWhiteRed LightRainbow Ocean OceanDepth Rainbow Rainbow2 Rainfall ReverseRainbow RedWhiteBlue RedWhiteBlue2 RedWideWhiteBlue Spectrum Topography TopographyDepth WhiteBlueBlack WhiteGreenBlack WhiteRedBlack WhiteBlack YellowRed KT_algae KT_amp KT_balance KT_curl KT_deep KT_delta KT_dense KT_gray KT_haline KT_ice KT_matter KT_oxy KT_phase KT_solar KT_speed KT_tempo KT_thermal KT_turbid EK80  Continuity:  Continuous Discrete  Scale:  Linear Log    Minimum:   Maximum:   N Sections:  2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Draw land mask:  under over outline off Y Axis Minimum:   Maximum:    Ascending Descending Linear Log   Redraw the Graph (Please be patient. It may take a while to get the data.)   Optional: Then set the File Type: .asc .csv .csvp .csv0 .dataTable .das .dds .dods .esriCsv .fgdc .geoJson .graph .help .html .htmlTable .iso19115 .itx .json .jsonlCSV1 .jsonlCSV .jsonlKVP .mat .nc .ncHeader .ncCF .ncCFHeader .ncCFMA .ncCFMAHeader .nccsv .nccsvMetadata .ncoJson .odvTxt .parquet .parquetWMeta .subset .tsv .tsvp .tsv0 .wav .xhtml .kml .smallPdf .pdf .largePdf .smallPng .png .largePng .transparentPng (File Type information) and or view the URL: (Documentation / Bypass this form )

Click on the map to specify a new center point. Zoom:

 

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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:

• 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.
   

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  drogue {
    Float64 actual_range 0.0, 1.0;
    Float64 colorBarMaximum 1.5;
    Float64 colorBarMinimum 0.0;
    String long_name "drogue presence (1=drogued, 0=undrogued, .5=uncertain)";
    Float64 valid_max 1.0;
    Float64 valid_min 0.0;
  }
  id {
    Float64 actual_range 1831.0, 3.005340679025e+14;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String long_name "unique Global Drifter Program identification number";
    Float64 valid_max 3.005340679025e+14;
    Float64 valid_min 1831.0;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range -78.305, 89.984;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude (negative = south)";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 89.984;
    Float64 valid_min -78.305;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -179.999, 180.0;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude (negative = west)";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -179.999;
  }
  omega {
    Float64 actual_range -2.3873376766480199e-4, 2.092400608673687e-4;
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum -0.1;
    String long_name "spin omega";
    String standard_name "omega";
    String units "s^-1";
    Float64 valid_max 2.0924e-4;
    Float64 valid_min -2.3873e-4;
  }
  persist {
    Float64 actual_range 0.0, 126.25;
    Float64 colorBarMaximum 400.0;
    Float64 colorBarMinimum 0.0;
    String long_name "persistence of looping";
    String units "days";
    Float64 valid_max 126.25;
    Float64 valid_min 0.0;
  }
  radius {
    Float64 actual_range 17.78343516329514, 4.772509029339156e+9;
    Float64 colorBarMaximum 4.0e+9;
    Float64 colorBarMinimum 0.0;
    String long_name "orbital radius";
    String units "m";
    Float64 valid_max 4.7725090293392e+9;
    Float64 valid_min 17.7834;
  }
  t {
    Float64 actual_range 50.75, 16135.0;
    Float64 colorBarMaximum 20000.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Julian days since 12/31/1978";
    String units "m";
    Float64 valid_max 16135.0;
    Float64 valid_min 50.75;
  }
  u {
    Float64 actual_range -9.167175613947297, 211.16129164755287;
    Float64 colorBarMaximum 3.0;
    Float64 colorBarMinimum -3.0;
    String long_name "zonal velocity";
    String units "m/s";
    Float64 valid_max 211.1613;
    Float64 valid_min -9.1672;
  }
  v {
    Float64 actual_range -7.774243266340346, 175.99210730241188;
    Float64 colorBarMaximum 3.0;
    Float64 colorBarMinimum -3.0;
    String long_name "meridional velocity";
    String units "m/s";
    Float64 valid_max 175.9921;
    Float64 valid_min -7.7742;
  }
 }
  NC_GLOBAL {
    String author "Lumpkin (2016), J. Geophys. Res. Oceans, doi:10.1002/2015JC011435";
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "aoml.webmaster@noaa.gov";
    String creator_name "NOAA/AOML";
    String creator_type "institution";
    String creator_url "https://www.aoml.noaa.gov/";
    String datadate "Climatology uses data through 05-Mar-2023";
    String date2 "File created 15-Aug-2023 16:18:12";
    String description "Nonlooper trajectory segments in Global Drifter Program data base";
    Float64 Easternmost_Easting 180.0;
    Float64 geospatial_lat_max 89.984;
    Float64 geospatial_lat_min -78.305;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 180.0;
    Float64 geospatial_lon_min -179.999;
    String geospatial_lon_units "degrees_east";
    String history 
"2026-01-18T01:38:31Z (local files)
2026-01-18T01:38:31Z https://erddap.aoml.noaa.gov/gdp/tabledap/drifter_nonloopers.das";
    String infoUrl "https://www.aoml.noaa.gov/phod/gdp/loopers.php";
    String institution "NOAA/AOML";
    String keywords "1/1/1979, aoml, atlantic, correlation, data, days, drifter, drogue, drogued, function, global, identification, integral, julian, laboratory, latitude, longitude, looper, loopers, looping, meridional, meteorological, noaa, noaa/aoml, number, oceanographic, omega, orbital, perFit, period, persist, persistence, presence, program, radius, scale, since, spin, time, trajectories, u, uncertain, undrogued, unique, v, velocity, zonal";
    String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/) This study used data collected and made freely available by the NOAA Global Drifter Program (https://www.aoml.noaa.gov/phod/gdp/) accessed from https://erddap.aoml.noaa.gov/gdp/erddap/index.html";
    Float64 Northernmost_Northing 89.984;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing -78.305;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "Global Drifter Program product derived from drifting buoy data containing nonlooper trajectory segments";
    String title "Global Drifter Program - Nonlooper Trajectories";
    String version "2.4";
    Float64 Westernmost_Easting -179.999;
  }
}

 

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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 Data Access Protocol (DAP) and its selection constraints.

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.

 

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