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ERDDAP
Easier access to scientific data |
Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | "Trajectory - R4.x260.204.0001 - drifter_13_mainpass_channel_east - 0.0N, 88. 09W - 2015-04-09" 
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| Institution: | DISL (Dataset ID: R4_x260_204_0001_drifter_13_mainpass_channel_east) |
| Range: | longitude = -88.08623 to -88.04046°E, latitude = 5.03E-4 to 30.228325°N, time = 2015-04-09T11:36:51Z to 2015-04-09T15:59:59Z |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Data Access Form
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![[The graph you specified. Please be patient.]](https://erddap.griidc.org/erddap/tabledap/R4_x260_204_0001_drifter_13_mainpass_channel_east.png?longitude,latitude,trajectory&time%3E=2015-04-03T00%3A00%3A00Z&time%3C=2015-04-10T00%3A00%3A00Z&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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Attributes {
s {
trajectory {
Int16 _FillValue -32767;
String cf_role "trajectory_id";
String ioos_category "Identifier";
String long_name "Drifter 13 Mainpass Channel East";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.428579411e+9, 1.428595199e+9;
String axis "T";
String calendar "gregorian";
Float64 colorBarMaximum 1.4286e+9;
Float64 colorBarMinimum 1.428575e+9;
String coverage_content_type "physicalMeasurement";
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";
Float64 valid_max 1.428595199e+9;
Float64 valid_min 1.428579411e+9;
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue -999.99;
Float64 actual_range 5.03e-4, 30.228324;
String axis "Y";
String axis_name "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 30.228324;
Float64 valid_min 5.03e-4;
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue -999.99;
Float64 actual_range -88.086227, -88.040458;
String axis "X";
String axis_name "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max -88.040458;
Float64 valid_min -88.086227;
}
satelliteNumber {
Int16 actual_range 1, 243;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String coverage_content_type "referenceInformation";
String ioos_category "Identifier";
String long_name "satellite number";
String standard_name "satellite_number";
}
drifterSpeed {
Float64 _FillValue -999.99;
Float64 actual_range 0.05, 2.9;
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum 0.0;
String ioos_category "Currents";
String long_name "current speed";
String standard_name "sea_water_speed";
String units "knots";
Float64 valid_max 2.9;
Float64 valid_min 0.05;
}
temperature {
Float64 _FillValue -999.99;
Float64 actual_range 28.2, 29.43;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Temperature";
String long_name "Temperature";
String ncei_name "Temperature";
String platform "Drifter";
String source "in situ measuremnts";
String standard_name "sea_water_temperature";
String units "degree_C";
Float64 valid_max 29.43;
Float64 valid_min 28.2;
}
conductivity {
Float64 _FillValue -999.99;
Float64 actual_range 39700.0, 53550.0;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 30.0;
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Salinity";
String long_name "Conductivity";
String ncei_name "Conductivity";
String platform "Drifter";
String source "in situ measuremnts";
String standard_name "sea_water_electrical_conductivity";
String units "uS";
Float64 valid_max 53550.0;
Float64 valid_min 39700.0;
}
salinity {
Float64 _FillValue -999.99;
Float64 actual_range 25.31, 35.38;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Salinity";
String long_name "Salinity";
String ncei_name "Salinity";
String platform "Drifter";
String source "in situ measuremnts";
String standard_name "sea_water_practical_salinity";
String units "PSU";
Float64 valid_max 35.38;
Float64 valid_min 25.31;
}
TDM {
Float64 _FillValue -999.99;
Float64 actual_range 21441.0, 28918.0;
Float64 colorBarMaximum 30000.0;
Float64 colorBarMinimum 20000.0;
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Davis drifters";
String ioos_category "Unknown";
String long_name "Total Dissolved Matter(TDM) concentration";
String platform "Drifter";
String standard_name "mass_concentration_of_total_dissolved_matter";
String units "mg l-1";
Float64 valid_max 28918.0;
Float64 valid_min 21441.0;
}
specificGravity {
Float64 _FillValue -999.99;
Float64 actual_range 25.31, 35.38;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 25.0;
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Unknown";
String long_name "specific gravity";
String platform "Drifter";
String standard_name "specific_gravity";
Float64 valid_max 35.38;
Float64 valid_min 25.31;
}
platform {
String ioos_category "Unknown";
String long_name "Drifter";
String ncei_code "Drifter";
}
instrument {
String ioos_category "Unknown";
String long_name "Davis drifters";
}
crs {
Int32 _FillValue -2147483647;
String epsg_code "EPSG:4326";
String grid_mapping_name "latitude_longitude";
Float64 inverse_flattening 298.257223563;
String ioos_category "Unknown";
String long_name "CRS";
Float64 longitude_of_prime_meridian 0.0;
Float64 semi_major_axis 6378137.0;
}
}
NC_GLOBAL {
String cdm_data_type "Trajectory";
String cdm_trajectory_variables "time, latitude, longitude, satelliteNumber, drifterSpeed, temperature, conductivity, salinity, TDM, specificGravity";
String contributor_email "briandz@disl.org";
String contributor_institution "Dauphin Island Sea Lab (DISL)";
String contributor_name "Brian Dzwonkowski";
String contributor_phone "+1-251-861-2141 x7563";
String Conventions "CF-1.6, ACDD-1.3, COARDS";
String Country "USA";
String creator_email "j.davis@usm.edu";
String creator_institution "University of Southern Mississippi/ Department of Marine Science";
String creator_name "James Davis";
String creator_phone "+1-228-688-3177";
String creator_role "Applications Programmer";
String creator_type "person";
String creator_url "https://data.gulfresearchinitiative.org/data/R4.x260.204:0001";
String date_created "2020-01-15T16:15:25Z";
String date_issued "2020-01-15T16:15:25Z";
String date_metadata_modified "2020-01-15T16:15:25Z";
String date_modified "2020-01-15T16:15:25Z";
Float64 Easternmost_Easting -88.040458;
String featureType "Trajectory";
String geospatial_bounds "POLYGON ((30.260 -88.177, 30.250 -87.99, 30.09 -87.99, 30.09 -88.177, 30.260 -88.177))";
String geospatial_bounds_crs "EPSG:4326";
String geospatial_bounds_vertical_crs "EPSG:5831";
Float64 geospatial_lat_max 30.228324;
Float64 geospatial_lat_min 5.03e-4;
Float64 geospatial_lat_resolution -3.0843726235741845e-4;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -88.040458;
Float64 geospatial_lon_min -88.086227;
Float64 geospatial_lon_resolution -1.7402661596955453e-4;
String geospatial_lon_units "degrees_east";
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"datestr(now,30)
2025-11-13T02:03:31Z (local files)
2025-11-13T02:03:31Z https://erddap.griidc.org/tabledap/R4_x260_204_0001_drifter_13_mainpass_channel_east.das";
String id "Drifters_mainpass_20150904";
String infoUrl "https://data.gulfresearchinitiative.org/data/R4.x260.204:0001";
String institution "DISL";
String instrument "drifters";
String instrument_vocabulary "GCMD Science Keywords Version 8.6";
String keywords "0.0n, 2015-04-09, 2015/09/04, 88.09w, bay, channel, circulation, concentration, conductivity, crs, ctd data, current, currents, data, dauphin, davis, density, disl, dissolved, drifter, drifters, drifterSpeed, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, east, electrical, gravity, identifier, instrument, island, lab, latitude, longitude, main, main pass, mainpass, mass, mass_concentration_of_total_dissolved_matter, matter, mobile, number, ocean, oceans, pass, platform, practical, r4.x260.204.0001, release, salinity, satellite, satellite_number, satelliteNumber, science, sea, sea_water_electrical_conductivity, sea_water_practical_salinity, sea_water_speed, sea_water_temperature, seawater, specific, specific_gravity, specificGravity, speed, tdm, temperature, time, total, trajectory, velocity, water";
String keywords_vocabulary "GCMD Science Keywords";
String license "Freely Distributed";
String metadata_link "https://data.gulfresearchinitiative.org/data/R4.x260.204:0001";
Float64 Northernmost_Northing 30.228324;
String platform "Drifter";
String platform_vocabulary "GCMD Science Keywords Version 8.6";
String processing_level "Geophysical units from raw data";
String product_version "v.0";
String program "Gulf Of Mexico Reseach Initiative (GOMRI)";
String project "Consortium for Oil Spill Exposure Pathways in Coastal River-Dominated Ecosystems (CONCORDE)";
String publisher_email "griidc@gomri.org";
String publisher_institution "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
String publisher_name "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
String publisher_phone "+1-301-713-3277";
String publisher_type "institution";
String publisher_udi "R4.x260.204:0001";
String publisher_url "https://data.gulfresearchinitiative.org";
String references "data.gomri.org";
String sea_name "Gulf of Mexico, Mississippi Bight, Mobile Bay";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 5.03e-4;
String standard_name_vocabulary "CF Standard Name Table v55";
String subsetVariables "time, latitude, longitude, satelliteNumber, drifterSpeed, temperature, conductivity, salinity, TDM, specificGravity";
String summary "Drifter data at Main Pass, Mobile Bay Release 1 (2015/09/04). At the mouth of Mobile Bay (Main pass), a Lagrangian experiment was conducted using surface drifters on 09/04/2015. It quantified the flow patterns associated with the ebb tidal plume exiting from Mobile Bay.";
String time_coverage_duration "P0Y0M0DT4H23M7S";
String time_coverage_end "2015-04-09T15:59:59Z";
String time_coverage_start "2015-04-09T11:36:51Z";
String title "\"Trajectory - R4.x260.204.0001 - drifter_13_mainpass_channel_east - 0.0N, 88.09W - 2015-04-09\"";
Float64 Westernmost_Easting -88.086227;
}
}
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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.
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.