Easier access to scientific data
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Voice of the Ocean ERDDAP™
Easier access to scientific data |
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| Dataset Title: | Trift56-20221126T0901
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| Institution: | Voice of the Ocean Foundation (Dataset ID: delayed_SEA056_M55) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Files
| Make a graph
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Attributes {
s {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.669453314521e+9, 1.670495319184e+9;
String axis "T";
String calendar "proleptic_gregorian";
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";
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue NaN;
Float64 actual_range 55.506649017333984, 55.68131637573242;
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Estimated between surface fixes";
String conversion "nmea2deg";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String ioos_category "Location";
String long_name "Latitude";
String observation_type "measured";
String platform "platform";
String references "WGS84";
String source "NAV_LATITUDE";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue NaN;
Float64 actual_range 15.743066787719727, 16.32386589050293;
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Estimated between surface fixes";
String conversion "nmea2deg";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String ioos_category "Location";
String long_name "Longitude";
String observation_type "measured";
String platform "platform";
String references "WGS84";
String source "NAV_LONGITUDE";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float64 _FillValue NaN;
String accuracy "1";
Float64 actual_range 0.2310855230999122, 63.10915839196099;
String axis "Z";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String comment "from science pressure and interpolated";
String instrument "instrument_ctd";
String ioos_category "Location";
String long_name "glider depth";
String observation_type "calulated";
String platform "platform";
String positive "down";
String precision "2";
String reference_datum "surface";
String source "pressure";
String standard_name "depth";
String units "m";
Float64 valid_max 2000.0;
Float64 valid_min 0.0;
}
adcp_AccelerometerX {
Float32 _FillValue NaN;
Float32 actual_range -1.068481, 0.8106079;
String description "Accelerometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Accelerometer X";
Float32 missing_value NaN;
String units "g";
}
adcp_AccelerometerY {
Float32 _FillValue NaN;
Float32 actual_range -0.8475952, 0.680603;
String description "Accelerometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Accelerometer Y";
Float32 missing_value NaN;
String units "g";
}
adcp_AccelerometerZ {
Float32 _FillValue NaN;
Float32 actual_range 0.03826904, 1.292053;
String description "Accelerometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Accelerometer Z";
Float32 missing_value NaN;
String units "g";
}
adcp_Ambiguity {
Float32 _FillValue NaN;
Float32 actual_range 4.822, 4.921;
String description "Ambiguity velocity corrected for sound velocity";
String ioos_category "Unknown";
String long_name "Adcp Ambiguity";
Float32 missing_value NaN;
String units "m/s";
}
adcp_Heading {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 359.98;
String ioos_category "Unknown";
String long_name "Adcp Heading";
Float32 missing_value NaN;
String units "Degrees";
}
adcp_MagnetometerTemperature {
Float32 _FillValue NaN;
Float32 actual_range -5.375, -3.875;
String description "Uncalibrated temperature reading from the magnetometer";
String ioos_category "Temperature";
String long_name "Adcp Magnetometer Temperature";
Float32 missing_value NaN;
String units "---";
}
adcp_MagnetometerX {
Float32 _FillValue NaN;
Float32 actual_range -492.0, 653.0;
String description "Magnetometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Magnetometer X";
Float32 missing_value NaN;
}
adcp_MagnetometerY {
Float32 _FillValue NaN;
Float32 actual_range -457.0, 593.0;
String description "Magnetometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Magnetometer Y";
Float32 missing_value NaN;
}
adcp_MagnetometerZ {
Float32 _FillValue NaN;
Float32 actual_range -616.0, 159.0;
String description "Magnetometer reading in last measurement interval";
String ioos_category "Location";
String long_name "Adcp Magnetometer Z";
Float32 missing_value NaN;
}
adcp_Pitch {
Float32 _FillValue NaN;
Float32 actual_range -87.32, 54.31;
String ioos_category "Unknown";
String long_name "Adcp Pitch";
Float32 missing_value NaN;
String units "Degrees";
}
adcp_Pressure {
Float32 _FillValue NaN;
Float32 actual_range 0.544, 64.30901;
String ioos_category "Pressure";
String long_name "Adcp Pressure";
Float32 missing_value NaN;
String units "dbar";
}
adcp_PressureSensorTemperature {
Float32 _FillValue NaN;
Float32 actual_range 6.6, 9.8;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -10.0;
String description "Pressure sensor temperature";
String ioos_category "Temperature";
String long_name "Adcp Pressure Sensor Temperature";
Float32 missing_value NaN;
String units "C";
}
adcp_RTCTemperature {
Float32 _FillValue NaN;
Float32 actual_range 7.5, 12.5;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -10.0;
String description "Real time clock temperature";
String ioos_category "Temperature";
String long_name "Adcp RTCTemperature";
Float32 missing_value NaN;
String units "C";
}
adcp_Roll {
Float32 _FillValue NaN;
Float32 actual_range -63.01, 48.53;
String ioos_category "Unknown";
String long_name "Adcp Roll";
Float32 missing_value NaN;
String units "Degrees";
}
adcp_SpeedOfSound {
Float32 _FillValue NaN;
Float32 actual_range 1427.5, 1456.5;
String ioos_category "Currents";
String long_name "Adcp Speed Of Sound";
Float32 missing_value NaN;
String units "m/s";
}
adcp_Status {
Float32 _FillValue NaN;
Float32 actual_range 6.7606938e+8, 6.7606938e+8;
String ioos_category "Unknown";
String long_name "Adcp Status";
Float32 missing_value NaN;
}
adcp_TransmitEnergy {
Float32 _FillValue NaN;
Float32 actual_range 442.0, 500.0;
String description "Transmit Energy";
String ioos_category "Unknown";
String long_name "Adcp Transmit Energy";
Float32 missing_value NaN;
}
adcp_WaterTemperature {
Float32 _FillValue NaN;
Float32 actual_range 5.16, 12.14;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String ioos_category "Temperature";
String long_name "Sea Water Temperature";
Float32 missing_value NaN;
String standard_name "sea_water_temperature";
String units "C";
}
adcp_time {
Float64 actual_range -9.223372036854776e+18, 1.670495309e+9;
String calendar "proleptic_gregorian";
String ioos_category "Time";
String long_name "AD2CP recorded time";
String platform "platform";
String source "AD2CP_TIME";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
altimeter {
Float64 _FillValue NaN;
Float64 actual_range -1.0, 44.99532000274658;
String ioos_category "Unknown";
String long_name "glider altimeter reading";
String platform "platform";
String source "Altitude";
String standard_name "glider_altimeter_reading";
}
angular_cmd {
Int16 _FillValue 32767;
Int16 actual_range -70, 70;
String ioos_category "Unknown";
String long_name "glider angular command";
String platform "platform";
String source "AngCmd";
String standard_name "angular_command";
String units "degrees";
}
angular_pos {
Float32 _FillValue NaN;
Float32 actual_range -70.79934, 70.8;
String ioos_category "Unknown";
String long_name "glider angular position";
String platform "platform";
String source "AngPos";
String standard_name "angular_position";
String units "degrees";
}
ballast_cmd {
Int16 _FillValue 32767;
Int16 actual_range -500, 500;
String ioos_category "Unknown";
String long_name "glider ballast command";
String platform "platform";
String source "BallastCmd";
String standard_name "ballast_command";
String units "ml";
}
ballast_pos {
Float32 _FillValue NaN;
Float32 actual_range -524.9665, 508.3993;
String ioos_category "Unknown";
String long_name "glider ballast position";
String platform "platform";
String source "BallastPos";
String standard_name "ballast_position";
String units "ml";
}
chlorophyll {
Float32 _FillValue NaN;
Float32 actual_range -2.0207, 3.7994;
Float64 colorBarMaximum 30.0;
Float64 colorBarMinimum 0.03;
String colorBarScale "Log";
String instrument "instrument_flourometer";
String ioos_category "Ocean Color";
String long_name "chlorophyll";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String sensitivity "0.025";
String source "FLNTU_CHL_SCALED";
String standard_name "concentration_of_chlorophyll_in_sea_water";
String units "mg m-3";
Float32 valid_max 50.0;
Float32 valid_min 0.0;
}
chlorophyll_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=chlorophyll function=qartod.gross_range_test(suspect_span=[0, 15], fail_span=[-1, 20])>, <Call stream_id=chlorophyll function=qartod.spike_test(suspect_threshold=1, fail_threshold=5)>, <Call stream_id=chlorophyll function=qartod.location_test(bbox=[10, 50, 25, 70])>].";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for chlorophyll";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "concentration_of_chlorophyll_in_sea_water_flag";
Byte valid_max 9;
Byte valid_min 1;
}
chlorophyll_raw {
Int16 _FillValue 32767;
Int16 actual_range -119, 362;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_flourometer";
String ioos_category "Statistics";
String long_name "raw chlorophyll";
String platform "platform";
String source "FLNTU_CHL_COUNT";
String standard_name "raw_chlorophyll_in_sea_water";
String units "counts";
}
conductivity {
Float32 _FillValue NaN;
String accuracy "0.003";
Float32 actual_range -0.005999997, 18.14025;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 30.0;
String comment "Corrected for pressure lag in post-processing.";
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "water conductivity";
Float32 missing_value NaN;
String observation_type "measured";
String platform "platform";
String source "LEGATO_CONDUCTIVITY";
String standard_name "sea_water_electrical_conductivity";
String units "mS cm-1";
Float32 valid_max 85.0;
Float32 valid_min 0.0;
}
conductivity_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=conductivity function=qartod.gross_range_test(suspect_span=[5, 42], fail_span=[2, 45])>, <Call stream_id=conductivity function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for water conductivity";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_electrical_conductivity_flag";
Byte valid_max 9;
Byte valid_min 1;
}
dead_reckoning {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 1.0;
String ioos_category "Unknown";
String long_name "dead reckoning";
String platform "platform";
String source "DeadReckoning";
String standard_name "dead_reckoning";
String units "None";
}
declination {
Float32 _FillValue NaN;
Float32 actual_range 6.0, 6.0;
String ioos_category "Unknown";
String long_name "declination";
String platform "platform";
String source "Declination";
String standard_name "declination";
String units "degrees";
}
density {
Float32 _FillValue NaN;
String accuracy "0.01";
Float32 actual_range 999.8427, 1011.886;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String comment "Corrected for pressure lag in post-processing.";
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "water salinity";
String method "get_derived_eos_raw";
Float32 missing_value NaN;
String observation_type "calulated";
String platform "platform";
String precision "0.01";
String sources "conductivity temperature pressure";
String standard_name "sea_water_practical_salinity";
String units "1e-3";
Float32 valid_max 40.0;
Float32 valid_min 0.0;
}
density_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=temperature function=qartod.gross_range_test(suspect_span=[0, 30], fail_span=[-2.5, 40])>, <Call stream_id=temperature function=qartod.spike_test(suspect_threshold=2.0, fail_threshold=6.0)>, <Call stream_id=temperature function=qartod.location_test(bbox=[10, 50, 25, 70])>, <Call stream_id=conductivity function=qartod.gross_range_test(suspect_span=[5, 42], fail_span=[2, 45])>, <Call stream_id=salinity function=qartod.gross_range_test(suspect_span=[5, 38], fail_span=[2, 41])>, <Call stream_id=salinity function=qartod.spike_test(suspect_threshold=0.3, fail_threshold=0.9)>, <Call stream_id=salinity function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for Density";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_density_flag";
Byte valid_max 9;
Byte valid_min 1;
}
desired_heading {
Int16 _FillValue 32767;
Int16 actual_range 0, 319;
String ioos_category "Unknown";
String long_name "glider desired heading angle";
String platform "platform";
String source "DesiredH";
String standard_name "platform_desired_orientation";
String units "degrees";
}
distance_over_ground {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 244.2808;
String ioos_category "Unknown";
String long_name "distance over ground flown since mission start";
String method "get_distance_over_ground";
String sources "latitude longitude";
String units "km";
}
dive_num {
Int16 _FillValue 32767;
Int16 actual_range 2, 957;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String ioos_category "Statistics";
String long_name "glider dive number from original SeaExplorer filename";
String platform "platform";
String source "fnum";
String standard_name "dive_number";
String units "None";
}
heading {
Float32 _FillValue NaN;
Float32 actual_range 0.01289, 359.9627;
String ioos_category "Unknown";
String long_name "glider heading angle";
String platform "platform";
String source "Heading";
String standard_name "platform_orientation";
String units "degrees";
}
internal_pressure {
Float32 _FillValue NaN;
Float32 actual_range 72149.1, 75137.31;
String ioos_category "Pressure";
String long_name "internal pressure";
String platform "platform";
String source "Pa";
String standard_name "internal_pressure";
String units "Pa";
}
internal_temperature {
Float32 _FillValue NaN;
Float32 actual_range 8.8, 13.8;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -10.0;
String ioos_category "Temperature";
String long_name "internal temperature";
String platform "platform";
String source "Temperature";
String standard_name "internal_temperature";
String units "Celsius";
}
linear_cmd {
Int16 _FillValue 32767;
Int16 actual_range 5, 100;
String ioos_category "Unknown";
String long_name "glider linear command";
String platform "platform";
String source "LinCmd";
String standard_name "linear_command";
String units "cm";
}
linear_pos {
Float32 _FillValue NaN;
Float32 actual_range 3.6, 101.2989;
String ioos_category "Unknown";
String long_name "glider linear position";
String platform "platform";
String source "LinPos";
String standard_name "linear_position";
String units "cm";
}
methane_concentration {
Float32 _FillValue NaN;
String accuracy "Nan";
Float32 actual_range 17.9, 996.9;
String instrument "Nan";
String ioos_category "Unknown";
String long_name "methane concentration";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String source "METS_METHANE_SCALED";
String standard_name "methane_concentration";
String units "mg m-3";
Float32 valid_max NaN;
Float32 valid_min NaN;
}
methane_raw_concentration {
Float32 _FillValue NaN;
String accuracy "Nan";
Float32 actual_range 1.3245, 3.6426;
String instrument "Nan";
String ioos_category "Unknown";
String long_name "methane raw concentration";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String source "METS_METHANE_VOLT";
String standard_name "methane_raw_concentration";
String units "V";
Float32 valid_max NaN;
Float32 valid_min NaN;
}
mets_raw_temperature {
Float32 _FillValue NaN;
String accuracy "Nan";
Float32 actual_range 0.4932, 0.7788;
String instrument "Nan";
String ioos_category "Temperature";
String long_name "mets sensor raw temperature";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String source "METS_TEMP_VOLT";
String standard_name "sensor_raw_temperature";
String units "V";
Float32 valid_max NaN;
Float32 valid_min NaN;
}
mets_temperature {
Float32 _FillValue NaN;
String accuracy "Nan";
Float32 actual_range 4.98, 11.19;
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -10.0;
String instrument "Nan";
String ioos_category "Temperature";
String long_name "mets sensor temperature";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String source "METS_TEMP_SCALED";
String standard_name "sensor_temperature";
String units "Celsius";
Float32 valid_max NaN;
Float32 valid_min NaN;
}
nav_resource {
Float32 _FillValue NaN;
Float32 actual_range 100.0, 119.0;
String ioos_category "Statistics";
String long_name "nav resource";
String platform "platform";
String source "NAV_RESOURCE";
String standard_name "nav_resource";
String units "None";
}
nav_state {
Int16 _FillValue 32767;
Int16 actual_range 100, 119;
String ioos_category "Statistics";
String long_name "seaexplorer navigation state";
String platform "platform";
String source "NAV_RESOURCE";
String standard_name "navigation_state";
String units "None";
}
oxygen_concentration {
Float32 _FillValue NaN;
String accuracy "2% or 2.0";
Float32 actual_range 0.0, 382.8473;
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String correct_oxygen "True";
String instrument "instrument_phosphorescence";
String ioos_category "Dissolved O2";
String long_name "oxygen concentration";
Float32 missing_value NaN;
String observation_type "calculated";
String oxygen_concentration_QC_RTQC_methodology "oxygen concentration corrected for salinity using gsw.O2sol_SP_pt withsalinity and potential temperature from dataset. Original oxygen concentration assumed to have been calculated using salinity = 0.0 PSU";
String platform "platform";
String reference_salinity "0";
String source "AROD_FT_DO";
String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
String units "mmol m-3";
Float32 valid_max 425.0;
Float32 valid_min 0.0;
}
oxygen_concentration_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 3;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=oxygen_concentration function=qartod.gross_range_test(suspect_span=[0, 350], fail_span=[0, 500])>, <Call stream_id=oxygen_concentration function=qartod.spike_test(suspect_threshold=10, fail_threshold=50)>, <Call stream_id=oxygen_concentration function=qartod.location_test(bbox=[10, 50, 25, 70])>].";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for oxygen concentration";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water_flag";
Byte valid_max 9;
Byte valid_min 1;
}
pitch {
Float32 _FillValue NaN;
Float32 actual_range -88.26783, 56.20361;
String ioos_category "Unknown";
String long_name "glider pitch angle";
String platform "platform";
String source "Pitch";
String standard_name "platform_pitch_angle";
String units "degrees";
}
potential_density {
Float32 _FillValue NaN;
String accuracy "0.01";
Float32 actual_range 999.8654, 1011.655;
Float64 colorBarMaximum 28.0;
Float64 colorBarMinimum 20.0;
String comment "raw, uncorrected salinity";
String instrument "instrument_ctd";
String ioos_category "Physical Oceanography";
String long_name "water potential density";
String method "get_derived_eos_raw";
Float32 missing_value NaN;
String observation_type "calulated";
String platform "platform";
String precision "0.01";
String sources "salinity temperature pressure";
String standard_name "sea_water_potential_density";
String units "kg m-3";
}
potential_density_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=temperature function=qartod.gross_range_test(suspect_span=[0, 30], fail_span=[-2.5, 40])>, <Call stream_id=temperature function=qartod.spike_test(suspect_threshold=2.0, fail_threshold=6.0)>, <Call stream_id=temperature function=qartod.location_test(bbox=[10, 50, 25, 70])>, <Call stream_id=conductivity function=qartod.gross_range_test(suspect_span=[5, 42], fail_span=[2, 45])>, <Call stream_id=salinity function=qartod.gross_range_test(suspect_span=[5, 38], fail_span=[2, 41])>, <Call stream_id=salinity function=qartod.spike_test(suspect_threshold=0.3, fail_threshold=0.9)>, <Call stream_id=salinity function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for water potential density";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_potential_density_flag";
Byte valid_max 9;
Byte valid_min 1;
}
potential_temperature {
Float32 _FillValue NaN;
String accuracy "0.002";
Float32 actual_range 3.558201, 12.58471;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String comment "raw, uncorrected salinity";
String instrument "instrument_ctd";
String ioos_category "Temperature";
String long_name "water potential temperature";
String method "get_derived_eos_raw";
Float32 missing_value NaN;
String observation_type "calulated";
String platform "platform";
String precision "0.001";
String sources "salinity temperature pressure";
String standard_name "sea_water_potential_temperature";
String units "Celsius";
}
potential_temperature_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=temperature function=qartod.gross_range_test(suspect_span=[0, 30], fail_span=[-2.5, 40])>, <Call stream_id=temperature function=qartod.spike_test(suspect_threshold=2.0, fail_threshold=6.0)>, <Call stream_id=temperature function=qartod.location_test(bbox=[10, 50, 25, 70])>, <Call stream_id=conductivity function=qartod.gross_range_test(suspect_span=[5, 42], fail_span=[2, 45])>, <Call stream_id=salinity function=qartod.gross_range_test(suspect_span=[5, 38], fail_span=[2, 41])>, <Call stream_id=salinity function=qartod.spike_test(suspect_threshold=0.3, fail_threshold=0.9)>, <Call stream_id=salinity function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for water potential temperature";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_potential_temperature_flag";
Byte valid_max 9;
Byte valid_min 1;
}
pressure {
Float32 _FillValue NaN;
String accuracy "0.5";
Float32 actual_range 0.2332, 63.6967;
Float64 colorBarMaximum 5000.0;
Float64 colorBarMinimum 0.0;
String comment "ctd pressure sensor";
String instrument "instrument_ctd";
String ioos_category "Pressure";
String long_name "water pressure";
Float32 missing_value NaN;
String observation_type "measured";
String platform "platform";
String positive "down";
String reference_datum "sea-surface";
String source "LEGATO_PRESSURE";
String standard_name "sea_water_pressure";
String units "dbar";
Float32 valid_max 1000.0;
Float32 valid_min 0.0;
}
profile_direction {
Int16 _FillValue 32767;
Int16 actual_range -1, 1;
Float64 colorBarMaximum 360.0;
Float64 colorBarMinimum 0.0;
String comment "-1 = ascending, 1 = descending";
String ioos_category "Currents";
String long_name "profile direction";
String sources "pressure, time, dive_num";
String units "1";
}
profile_index {
Int16 _FillValue 32767;
Int16 actual_range 1, 1912;
String cf_role "timeseries_id";
String coordinates "depth latitude longitude";
String ioos_category "Identifier";
String long_name "Profile Index";
String sources "pressure, time, dive_num";
String units "1";
}
profile_num {
Int16 _FillValue 32767;
Int16 actual_range 1, 1912;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String ioos_category "Statistics";
String long_name "profile number";
String sources "pressure, time, dive_num";
String units "1";
}
roll {
Float32 _FillValue NaN;
Float32 actual_range -79.60195, 42.4045;
String ioos_category "Unknown";
String long_name "glider roll angle";
String platform "platform";
String source "Roll";
String standard_name "platform_roll_angle";
String units "degrees";
}
salinity {
Float32 _FillValue NaN;
String accuracy "0.01";
Float32 actual_range 0.0, 15.22804;
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String comment "Corrected for pressure lag in post-processing. Corrected following Thermal lag from Thermal Inertia of Conductivity Cells: Observations with a Sea-Bird Cell Rolf G. Lueck and James J. Picklo https://doi.org/10.1175/1520-0426(1990)007<0756:TIOCCO>2.0.CO;2 as implemented by Dever M., Owens B., Richards C., Wijffels S., Wong A., Shkvorets I., Halverson M., and Jonhson G. (accepted). Static and dynamic performance of the RBRargo3 CTD. Journal of Atmospheric and Oceanic Technology.";
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "water salinity";
String method "get_derived_eos_raw";
Float32 missing_value NaN;
String observation_type "calulated";
String platform "platform";
String precision "0.01";
String sources "conductivity temperature pressure";
String standard_name "sea_water_practical_salinity";
String units "1e-3";
Float32 valid_max 40.0;
Float32 valid_min 0.0;
}
salinity_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 4;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=conductivity function=qartod.gross_range_test(suspect_span=[5, 42], fail_span=[2, 45])>, <Call stream_id=salinity function=qartod.gross_range_test(suspect_span=[5, 38], fail_span=[2, 41])>, <Call stream_id=salinity function=qartod.spike_test(suspect_threshold=0.3, fail_threshold=0.9)>, <Call stream_id=salinity function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for water salinity";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_practical_salinity_flag";
Byte valid_max 9;
Byte valid_min 1;
}
security_level {
Float32 _FillValue NaN;
Float32 actual_range 0.0, 524288.0;
String ioos_category "Unknown";
String long_name "security level";
String platform "platform";
String source "SecurityLevel";
String standard_name "security_level";
String units "None";
}
temperature {
Float32 _FillValue NaN;
String accuracy "0.002";
Float32 actual_range 3.56272, 12.58472;
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String comment "Corrected following Thermal lag from Thermal Inertia of Conductivity Cells: Observations with a Sea-Bird Cell Rolf G. Lueck and James J. Picklo https://doi.org/10.1175/1520-0426(1990)007<0756:TIOCCO>2.0.CO;2 as implemented by Dever M., Owens B., Richards C., Wijffels S., Wong A., Shkvorets I., Halverson M., and Jonhson G. (accepted). Static and dynamic performance of the RBRargo3 CTD. Journal of Atmospheric and Oceanic Technology.";
String instrument "instrument_ctd";
String ioos_category "Temperature";
String long_name "water temperature";
Float32 missing_value NaN;
String observation_type "measured";
String platform "platform";
String source "LEGATO_TEMPERATURE";
String standard_name "sea_water_temperature";
String units "Celsius";
Float32 valid_max 42.0;
Float32 valid_min -5.0;
}
temperature_oxygen {
Float32 _FillValue NaN;
String accuracy "0.01";
Float32 actual_range 4.866, 12.508;
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_thermistor";
String ioos_category "Temperature";
String long_name "oxygen sensor temperature";
Float32 missing_value NaN;
String observation_type "measured";
String platform "platform";
String source "AROD_FT_TEMP";
String standard_name "temperature_of_sensor_for_oxygen_in_sea_water";
String units "Celsius";
Float32 valid_max 45.0;
Float32 valid_min -3.0;
}
temperature_qc {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 1, 1;
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0. Using config: [<Call stream_id=temperature function=qartod.gross_range_test(suspect_span=[0, 30], fail_span=[-2.5, 40])>, <Call stream_id=temperature function=qartod.spike_test(suspect_threshold=2.0, fail_threshold=6.0)>, <Call stream_id=temperature function=qartod.location_test(bbox=[10, 50, 25, 70])>]. Threshold values from EuroGOOS DATA-MEQ Working Group (2010) Recommendations for in-situ data Near Real Time Quality Control [Version 1.2]. EuroGOOS, 23pp. DOI https://dx.doi.org/10.25607/OBP-214.";
String flag_meanings "GOOD, UNKNOWN, SUSPECT, FAIL, MISSING";
Float64 flag_values 1, 2, 3, 4, 9;
String ioos_category "Quality";
String ioos_qc_module "qartod";
String long_name "quality control flags for water temperature";
String quality_control_conventions "IOOS QARTOD standard flags";
Float64 quality_control_set 1;
String standard_name "sea_water_temperature_flag";
Byte valid_max 9;
Byte valid_min 1;
}
turbidity {
Float32 _FillValue NaN;
Float32 actual_range -1.3359, 24.8941;
Float64 colorBarMaximum 30.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_turbidity_meter";
String ioos_category "Unknown";
String long_name "turbidity";
Float32 missing_value NaN;
String observation_type "calculated";
String platform "platform";
String sensitivity "0.01";
String source "FLNTU_NTU_SCALED";
String standard_name "turbidity_in_sea_water";
String units "NTU";
Float32 valid_max 25.0;
Float32 valid_min 0.0;
}
turbidity_raw {
Int16 _FillValue 32767;
Int16 actual_range -170, 4130;
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_flourometer";
String ioos_category "Statistics";
String long_name "raw turbidity";
String platform "platform";
String source "FLNTU_NTU_COUNT";
String standard_name "raw_turbidity_in_sea_water";
String units "counts";
}
vertical_distance_to_seafloor {
Float32 _FillValue NaN;
Float32 actual_range 0.001590218, 44.93404;
String comment "Distance to the seafloor is calculated from the glider altimeter (see altimeter variable), which is oriented at 20 degrees from the vertical such that it is vertical when the glider is pitched downwards at 20 degrees.";
String ioos_category "Unknown";
String long_name "vertical distance from glider to seafloor";
Float32 missing_value NaN;
String platform "platform";
String source "Altitude";
String standard_name "vertical_distance_to_seafloor";
String units "m";
}
voltage {
Float32 _FillValue NaN;
Float32 actual_range 17.6315, 29.19991;
String ioos_category "Unknown";
String long_name "glider voltage";
String platform "platform";
String source "Voltage";
String standard_name "platform_voltage";
String units "V";
}
}
NC_GLOBAL {
String acknowledgement "This study used data collected and made freely available by Voice of the Ocean Foundation (https://voiceoftheocean.org) accessed from https://erddap.observations.voiceoftheocean.org/erddap/index.html";
String AD2CP "{'calibration_date': '2022-03-17', 'factory_calibrated': 'Yes', 'long_name': 'Nortek Glider1000 AD2CP', 'make': 'Nortek', 'make_model': 'Nortek AD2CP', 'model': 'AD2CP', 'serial': '103355'}";
String altimeter "{'make': 'UNKNOWN', 'model': 'UNKNOWN', 'serial': '37'}";
String basin "Bornholm Basin";
String cdm_data_type "TimeSeries";
String cdm_timeseries_variables "profile_index";
String comment "Max diving depth set to 60 and then 57m to avoid sampling in anoxic waters as it damages the methane sensor. Zt/zs set to 2m for the entire mission duration and altitude set to 5m but the glider was flying well above the seabed due to the shallow max diving depth (zb)";
String contributor_name "Callum Rollo, Louise Biddle, Olle Petersson, Aleksandra Mazur, Marcus Melin, Gunnar Johnsson, Chiara Monforte";
String contributor_role "Data Processor, PI, Head of Operations, Glider Technician, Glider Technician, Glider Technician, Glider Pilot";
String Conventions "CF-1.10, COARDS, ACDD-1.3";
String creator_email "callum.rollo@voiceoftheocean.org";
String creator_name "Callum Rollo";
String creator_type "person";
String creator_url "https://observations.voiceoftheocean.org";
String ctd "{'calibration_date': '2020-07-21', 'factory_calibrated': 'Yes', 'long_name': 'RBR legato CTD', 'make': 'RBR', 'make_model': 'RBR legato CTD', 'model': 'legato', 'serial': '205046'}";
String dataset_id "delayed_SEA056_M55";
String date_created "2024-07-18T16:20:07Z";
String date_issued "2024-07-18T16:20:07Z";
String deployment_end "2022-12-08T10:28:39.184000000";
String deployment_id "55";
String deployment_name "NS_Bornholm";
String deployment_start "2022-11-26T09:01:54.521000000";
String disclaimer "Data, products and services from VOTO are provided 'as is' without any warranty as to fitness for a particular purpose.";
Float64 Easternmost_Easting 16.32386589050293;
String featureType "TimeSeries";
String format_version "IOOS_Glider_NetCDF_v2.0.nc";
Float64 geospatial_lat_max 55.68131637573242;
Float64 geospatial_lat_min 55.506649017333984;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 16.32386589050293;
Float64 geospatial_lon_min 15.743066787719727;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 63.10915839196099;
Float64 geospatial_vertical_min 0.2310855230999122;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String glider_instrument_name "seaexplorer";
String glider_model "SeaExplorer";
String glider_name "Trift";
String glider_serial "56";
String history
"CPROOF glider toolbox version: pre-tag
2024-10-30T01:59:26Z (local files)
2024-10-30T01:59:26Z https://erddap.observations.voiceoftheocean.org/erddap/tabledap/delayed_SEA056_M55.html";
String id "Trift56-20221126T0901";
String infoUrl "https://cfconventions.org/cf-conventions/v1.6.0/cf-conventions.html";
String institution "Voice of the Ocean Foundation";
String keywords "20221126t0901, accelerometer, acoustic, ad2cp, adcp, adcp_AccelerometerX, adcp_AccelerometerY, adcp_AccelerometerZ, adcp_Ambiguity, adcp_Heading, adcp_MagnetometerTemperature, adcp_MagnetometerX, adcp_MagnetometerY, adcp_MagnetometerZ, adcp_Pitch, adcp_Pressure, adcp_PressureSensorTemperature, adcp_Roll, adcp_RTCTemperature, adcp_SpeedOfSound, adcp_Status, adcp_time, adcp_TransmitEnergy, adcp_WaterTemperature, altimeter, ambiguity, angle, angular, angular_cmd, angular_command, angular_pos, angular_position, autonomous underwater vehicles, auvs, ballast, ballast_cmd, ballast_command, ballast_pos, ballast_position, chemistry, chlorophyll, chlorophyll_qc, chlorophyll_raw, color, command, concentration, concentration_of_chlorophyll_in_sea_water, concentration_of_chlorophyll_in_sea_water_flag, conductivity, conductivity_qc, control, current, currents, data, dead, dead_reckoning, declination, density, density_qc, depth, desired, desired_heading, direction, dissolved, dissolved o2, distance, distance_over_ground, dive, dive_num, dive_number, doppler, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Oxygen, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Potential Temperature, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Potential Density, Earth Science > Oceans > Salinity/Density > Salinity, electrical, energy, filename, flag, flags, flown, foundation, glider, glider_altimeter_reading, ground, heading, index, internal, internal_pressure, internal_temperature, latitude, level, linear, linear_cmd, linear_command, linear_pos, linear_position, longitude, magnetometer, methane, methane_concentration, methane_raw_concentration, mets, mets_raw_temperature, mets_temperature, mission, mole, mole_concentration_of_dissolved_molecular_oxygen_in_sea_water, mole_concentration_of_dissolved_molecular_oxygen_in_sea_water_flag, molecular, nav, nav_resource, nav_state, navigation, navigation_state, number, O2, ocean, ocean color, ocean pressure, ocean temperature, oceanography, oceans, orientation, original, over, oxygen, oxygen_concentration, oxygen_concentration_qc, physical, physical oceanography, pitch, platform, platform_desired_orientation, platform_orientation, platform_pitch_angle, platform_roll_angle, platform_voltage, position, potential, potential_density, potential_density_qc, potential_temperature, potential_temperature_qc, practical, pressure, profile, profile_direction, profile_index, profile_num, profiler, quality, raw, raw_chlorophyll_in_sea_water, raw_turbidity_in_sea_water, reading, reckoning, recorded, resource, roll, rtctemperature, salinity, salinity/density, salinity_qc, science, sea, sea_water_density_flag, sea_water_electrical_conductivity, sea_water_electrical_conductivity_flag, sea_water_potential_density, sea_water_potential_density_flag, sea_water_potential_temperature, sea_water_potential_temperature_flag, sea_water_practical_salinity, sea_water_practical_salinity_flag, sea_water_pressure, sea_water_temperature, sea_water_temperature_flag, seaexplorer, seafloor, seawater, security, security_level, sensor, sensor_raw_temperature, sensor_temperature, since, sound, speed, start, state, statistics, status, temperature, temperature_of_sensor_for_oxygen_in_sea_water, temperature_oxygen, temperature_qc, time, transmit, trift56, trift56-20221126t0901, turbidity, turbidity_in_sea_water, turbidity_raw, velocity, vertical, vertical_distance_to_seafloor, voice, voltage, water, water pressure, water temperature";
String keywords_vocabulary "GCMD Science Keywords";
String license "Creative Commons Attribution 4.0 (https://creativecommons.org/licenses/by/4.0/) This study used data collected and made freely available by Voice of the Ocean Foundation (https://voiceoftheocean.org) accessed from https://erddap.observations.voiceoftheocean.org/erddap/index.html";
String metadata_link "https://cfconventions.org/cf-conventions/v1.6.0/cf-conventions.html";
String methane "{'calibration_date': '2022-07-01', 'factory_calibrated': 'Yes', 'long_name': 'Franatech METS', 'make': 'Franatech', 'make_model': 'Franatech METS', 'model': 'METS', 'serial': '2117'}";
String naming_authority "Voice of the Ocean Foundation";
String netcdf_version "4.0";
Float64 Northernmost_Northing 55.68131637573242;
String optics "{'calibration_date': '2020-02-06', 'calibration_parameters': {'Chl_DarkCounts': 48, 'Chl_SF': 0.0121, 'NTU_DarkCounts': 49, 'NTU_SF': 0.0061}, 'factory_calibrated': 'Yes', 'long_name': 'Wetlabs ECO Puck FLNTU', 'make': 'Wetlabs', 'make_model': 'Wetlabs FLNTU', 'model': 'FLNTU', 'serial': '6134'}";
String oxygen "{'calibration_date': '2022-03-19', 'factory_calibrated': 'Yes', 'long_name': 'JFE Advantech RINKO-FT', 'make': 'JFE Advantech', 'make_model': 'JFE Advantech AROD_FT', 'model': 'AROD-FT', 'serial': '0050'}";
String platform "SeaExplorer Glider";
String processing_level "L1. Quality control flags from IOOS QC QARTOD https://github.com/ioos/ioos_qc Version: 2.1.0";
String project "NS_Bornholm";
String project_url "https://voiceoftheocean.org/";
String publisher_email "callum.rollo@voiceoftheocean.org";
String publisher_name "Callum Rollo";
String publisher_type "person";
String publisher_url "https://voiceoftheocean.org";
String references "created with pyglider https://github.com/c-proof/pyglider";
String sea_name "Baltic";
String source "Observational data from a profiling glider.";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 55.506649017333984;
String standard_name_vocabulary "CF Standard Name Table v70";
String subsetVariables "profile_index";
String summary "Part of NS_Bornholm continuous monitoring";
String time_coverage_end "2022-12-08T10:28:39Z";
String time_coverage_start "2022-11-26T09:01:54Z";
String title "Trift56-20221126T0901";
Float64 total_dives 956;
String transmission_system "IRIDIUM";
String variables
"time
latitude
longitude
nav_state
heading
pitch
roll
dive_num
security_level
declination
internal_temperature
internal_pressure
desired_heading
ballast_cmd
ballast_pos
linear_cmd
linear_pos
angular_cmd
angular_pos
voltage
altimeter
dead_reckoning
nav_resource
conductivity
temperature
pressure
salinity
chlorophyll
chlorophyll_raw
turbidity
turbidity_raw
oxygen_concentration
temperature_oxygen
methane_raw_concentration
methane_concentration
mets_raw_temperature
mets_temperature
ad2cp_heading
ad2cp_pitch
ad2cp_roll
ad2cp_pressure
ad2cp_time
ad2cp_beam1_cell_number1
ad2cp_beam2_cell_number1
ad2cp_beam3_cell_number1
ad2cp_beam4_cell_number1";
Float64 Westernmost_Easting 15.743066787719727;
String wmo_id "6801675";
}
}
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.