Easier access to scientific data
Brought to you by NOAA NMFS SWFSC ERD
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ERDDAP
Easier access to scientific data |
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Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | CTD data collected using RBR Maestro CTD mounted on DataXplorer Gen 2 autonomous surface vehicle. 
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| Institution: | OFI (Dataset ID: oor_ctd_data) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Files
| Make a graph
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Attributes {
s {
profile_id {
String cf_role "profile_id";
String comment "Unique string identifier for each CTD profile in this file.";
String ioos_category "Identifier";
String long_name "Profile identifier";
}
profile_direction {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 0, 1;
Float64 colorBarMaximum 1.5;
Float64 colorBarMinimum 0.0;
String comment "Direction of CTD motion during each observation. Down indicates increasing depth with time; up indicates decreasing depth with time.";
String flag_meanings "down up";
Float64 flag_values 0, 1;
String ioos_category "Other";
String long_name "Vertical profiling direction";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.755796863455091e+9, 1.758821305252935e+9;
String axis "T";
String calendar "gregorian";
String comment "Timestamp for each CTD sample; one value per observation.";
String ioos_category "Time";
String long_name "Time of observation";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 actual_range 44.6955196, 48.4188878;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Latitude of each CTD (conductivity–temperature–depth) observation.";
String ioos_category "Location";
String long_name "Latitude of observation";
String standard_name "latitude";
String units "degrees_north";
}
longitude {
String _CoordinateAxisType "Lon";
Float64 actual_range -123.3921627, -63.6244509;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Longitude of each CTD observation.";
String ioos_category "Location";
String long_name "Longitude of observation";
String standard_name "longitude";
String units "degrees_east";
}
conductivity {
Float64 actual_range 30.4546, 40.7485;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 30.0;
String comment "Electrical conductivity of sea water; recommended to store in SI units (S m-1).";
String ioos_category "Physical Oceanography";
String long_name "Sea water electrical conductivity";
String standard_name "sea_water_electrical_conductivity";
String units "S m-1";
}
temperature {
Float64 actual_range 5.4787, 18.127;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String comment "In-situ sea water temperature from the primary CTD temperature sensor.";
String ioos_category "Temperature";
String long_name "Sea water temperature";
String standard_name "sea_water_temperature";
String units "degree_Celsius";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float64 actual_range 0.13, 68.0792;
String axis "Z";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String comment "Depth of each CTD observation, measured positive downward.";
String ioos_category "Location";
String long_name "Depth below sea surface";
String positive "down";
String standard_name "depth";
String units "m";
}
pressure {
Float64 actual_range 10.2636, 78.7715;
String comment "Absolute pressure measured by the CTD; typically equals sea water pressure plus atmospheric pressure.";
String ioos_category "Pressure";
String long_name "Instrument absolute pressure";
String standard_name "pressure";
String units "dbar";
}
oxygen_concentration {
Float64 actual_range 121.7667, 349.4085;
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String comment "Dissolved molecular oxygen concentration in sea water as reported by the optical dissolved oxygen sensor.";
String long_name "Dissolved oxygen concentration";
String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
String units "umol L-1";
}
oxygen_saturation {
Float64 actual_range 42.0392, 141.2396;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String comment "Oxygen saturation relative to air-equilibrated sea water (100% = equilibrium).";
String long_name "Dissolved oxygen saturation";
String standard_name "fractional_saturation_of_oxygen_in_sea_water";
String units "percent";
}
ph {
Float64 actual_range 6.3578, 9.0292;
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 7.0;
String comment "In-situ sea water pH reported on the total hydrogen ion scale.";
String long_name "Sea water pH on total scale";
String standard_name "sea_water_ph_reported_on_total_scale";
String units "1";
}
turbidity {
Float64 actual_range -1.0315, 110.1687;
String comment "Turbidity from the Seapoint turbidity sensor, reported in Nephelometric Turbidity Units (NTU).";
String long_name "Sea water turbidity";
String standard_name "sea_water_turbidity";
String units "NTU";
}
sea_pressure {
Float64 actual_range 0.1311, 68.639;
Float64 colorBarMaximum 5000.0;
Float64 colorBarMinimum 0.0;
String comment "Sea water pressure relative to the sea surface (atmospheric pressure removed).";
String ioos_category "Pressure";
String long_name "Sea water pressure";
String standard_name "sea_water_pressure";
String units "dbar";
}
salinity {
Float64 actual_range 30.0, 32.4238;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String comment "Practical salinity (unitless) derived from conductivity, temperature, and pressure.";
String ioos_category "Salinity";
String long_name "Practical salinity";
String standard_name "sea_water_practical_salinity";
String units "1";
}
speed_of_sound {
Float64 actual_range 1468.2041, 1511.1226;
String comment "Speed of sound in sea water derived from CTD measurements.";
String ioos_category "Physical Oceanography";
String long_name "Speed of sound in sea water";
String standard_name "speed_of_sound_in_sea_water";
String units "m s-1";
}
specific_conductivity {
Float64 actual_range 46301.043, 49921.254;
String comment "Specific conductance (conductivity normalized to a reference temperature); recommended SI units (S m-1).";
String ioos_category "Physical Oceanography";
String long_name "Sea water specific conductance";
String standard_name "sea_water_specific_conductance";
String units "S m-1";
}
odo_temperature {
Float64 actual_range 5.5019, 18.0453;
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String comment "Temperature measured by the thermistor inside the oxygen sensor, used for temperature compensation of dissolved oxygen.";
String ioos_category "Temperature";
String long_name "Optical dissolved oxygen (ODO) sensor internal temperature";
String standard_name "temperature_of_sensor_for_oxygen_in_sea_water";
String units "degree_Celsius";
}
}
NC_GLOBAL {
String cdm_data_type "Profile";
String cdm_profile_variables "profile_id, profile_direction";
String Conventions "CF-1.13, ACDD-1.3, COARDS";
String creator_name "OFI";
String creator_type "institution";
String description "CTD data collected using RBR Maestro CTD mounted on DataXplorer Gen 2 autonomous surface vehicle.";
Float64 Easternmost_Easting -63.6244509;
String featureType "Profile";
String format_version "OFI OOR Processing V0.1";
Float64 geospatial_lat_max 48.4188878;
Float64 geospatial_lat_min 44.6955196;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -63.6244509;
Float64 geospatial_lon_min -123.3921627;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 68.0792;
Float64 geospatial_vertical_min 0.13;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String history
"Observational data from RBR Maestro CTD
2026-01-29T10:44:56Z (local files)
2026-01-29T10:44:56Z http://deverddap.ceotr.ca//erddap/tabledap/oor_ctd_data.html";
String infoUrl "???";
String institution "OFI";
String iso_3166_country_code "CA";
String keywords "absolute, acoustic, acoustics, autonomous, below, chemistry, collected, concentration, conductance, conductivity, ctd, data, dataxplorer, density, depth, direction, dissolved, earth, Earth Science > Oceans > Ocean Acoustics > Acoustic Velocity, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, electrical, fractional, fractional_saturation_of_oxygen_in_sea_water, gen, identifier, instrument, internal, latitude, longitude, maestro, mole, mole_concentration_of_dissolved_molecular_oxygen_in_sea_water, molecular, mounted, O2, observation, ocean, oceanography, oceans, odo, odo_temperature, ofi, optical, oxygen, oxygen_concentration, oxygen_saturation, physical, physical oceanography, practical, pressure, profile, profile_direction, profile_id, profiling, rbr, reported, salinity, saturation, scale, science, sea, sea_pressure, sea_water_electrical_conductivity, sea_water_ph_reported_on_total_scale, sea_water_practical_salinity, sea_water_pressure, sea_water_specific_conductance, sea_water_temperature, sea_water_turbidity, seawater, sensor, sonde, sound, specific, specific_conductivity, speed, speed_of_sound, speed_of_sound_in_sea_water, surface, temperature, temperature_of_sensor_for_oxygen_in_sea_water, time, total, turbidity, using, vehicle, velocity, vertical, water";
String keywords_vocabulary "GCMD Science Keywords";
String license "Creative Commons Attribution 4.0 Attribution https://creativecommons.org/licenses/by/4.0/";
Float64 Northernmost_Northing 48.4188878;
String odf_data_type "CTD";
String organization "Ocean Frontier Institute (OFI)";
String platform "Open Ocean Robotics DataXplorer Gen 2";
String platform_type "autonomous_surface_vehicle";
String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
String publisher_country "Canada";
String publisher_email "ceotr@dal.ca";
String publisher_institution "Ocean Frontier Institute (OFI)";
String source "Observational data from RBR Maestro CTD";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 44.6955196;
String standard_name_vocabulary "CF Standard Name Table v92";
String summary "Conductivity, Temperature, Depth (CTD) data collected using RBR Maestro CTD mounted on DataXplorer Gen 2 autonomous surface vehicle.";
String time_coverage_end "2025-09-25T17:28:25Z";
String time_coverage_start "2025-08-21T17:21:03Z";
String title "CTD data collected using RBR Maestro CTD mounted on DataXplorer Gen 2 autonomous surface vehicle.";
Float64 Westernmost_Easting -123.3921627;
}
}
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.
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.