![]() |
ERDDAP
Easier access to scientific data |
Brought to you by NOAA NMFS SWFSC ERD |
| Dataset Title: | ng288-20250815T0000
|
| Institution: | Naval Oceanographic Office (Dataset ID: ng288-20250815T0000) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Files
| Make a graph
|
Attributes {
s {
trajectory {
String cf_role "trajectory_id";
String comment "A trajectory is one deployment of a glider.";
String ioos_category "Identifier";
String long_name "Trajectory Name";
}
wmo_id {
String ioos_category "Identifier";
String long_name "WMO ID";
}
profile_id {
Int32 _FillValue -999;
Int32 actual_range 19200001, 19902272;
String cf_role "profile_id";
String comment "Sequential profile number within the trajectory. This value is unique in each file that is part of a single trajectory/deployment.";
String ioos_category "Identifier";
String long_name "Profile ID";
Int32 valid_max 2147483647;
Int32 valid_min 1;
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.755277828e+9, 1.762717475e+9;
String axis "T";
String calendar "gregorian";
String comment "Timestamp corresponding to the mid-point of the profile.";
String ioos_category "Time";
String long_name "Profile Time";
String observation_type "calculated";
String platform "platform";
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 -999.0;
Float64 actual_range 29.763232266158738, 31.606423192095626;
String ancillary_variables "qartod_location_test_flag";
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Value is interpolated to provide an estimate of the latitude at the mid-point of the profile.";
String ioos_category "Location";
String long_name "Profile Latitude";
String observation_type "calculated";
String platform "platform";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue -999.0;
Float64 actual_range -79.5417206655574, -75.12610813953488;
String ancillary_variables "qartod_location_test_flag";
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Value is interpolated to provide an estimate of the longitude at the mid-point of the profile.";
String ioos_category "Location";
String long_name "Profile Longitude";
String observation_type "calculated";
String platform "platform";
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";
Float32 _FillValue -999.0;
Float32 actual_range -0.1590063, 956.4066;
String ancillary_variables "depth_qc";
String axis "Z";
Float64 colorBarMaximum 2000.0;
Float64 colorBarMinimum 0.0;
String colorBarPalette "OceanDepth";
String instrument "instrument_ctd";
String ioos_category "Location";
String long_name "Depth";
String observation_type "calculated";
String platform "platform";
String positive "down";
String reference_datum "sea-surface";
String standard_name "depth";
String units "m";
Float32 valid_max 2000.0;
Float32 valid_min 0.0;
}
conductivity {
Float32 _FillValue -999.0;
Float32 actual_range 35.4985, 61.497402;
String ancillary_variables "conductivity_qc qartod_conductivity_flat_line_flag qartod_conductivity_gross_range_flag qartod_conductivity_rate_of_change_flag qartod_conductivity_spike_flag qartod_conductivity_primary_flag";
Float64 colorBarMaximum 9.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "Sea Water Electrical Conductivity";
String observation_type "measured";
String platform "platform";
String standard_name "sea_water_electrical_conductivity";
String units "S m-1";
Float32 valid_max 10.0;
Float32 valid_min 0.0;
}
conductivity_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "conductivity Quality flag";
String standard_name "sea_water_electrical_conductivity status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
density {
Float32 _FillValue -999.0;
Float32 actual_range 1021.78644, 1031.9352;
String ancillary_variables "density_qc qartod_density_flat_line_flag qartod_density_gross_range_flag qartod_density_rate_of_change_flag qartod_density_spike_flag qartod_density_primary_flag";
Float64 colorBarMaximum 1032.0;
Float64 colorBarMinimum 1020.0;
String instrument "instrument_ctd";
String ioos_category "Other";
String long_name "Sea Water Density";
String observation_type "calculated";
String platform "platform";
String standard_name "sea_water_density";
String units "kg m-3";
Float32 valid_max 1040.0;
Float32 valid_min 1015.0;
}
density_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "density Quality flag";
String standard_name "sea_water_density status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
depth_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "depth Quality flag";
String standard_name "depth status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
instrument_ctd {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 0, 0;
String comment "pumped CTD";
String ioos_category "Identifier";
String long_name "CTD Metadata";
String plaform "platform";
String type "platform";
String units "1";
}
lat_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "latitude Quality flag";
String standard_name "latitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
lat_uv {
Float64 _FillValue -999.0;
Float64 actual_range 29.752365, 31.607500833333333;
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String ioos_category "Location";
String long_name "Depth-averaged Latitude";
String observation_type "calculated";
String platform "platform";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
lat_uv_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "lat_uv Quality flag";
String standard_name "latitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
lon_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "longitude Quality flag";
String standard_name "longitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
lon_uv {
Float64 _FillValue -999.0;
Float64 actual_range -79.304405, -75.12923;
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String ioos_category "Location";
String long_name "Depth-averaged Longitude";
String observation_type "calculated";
String platform "platform";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
lon_uv_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "lon_uv Quality flag";
String standard_name "longitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
platform {
Byte _FillValue 127;
String _Unsigned "false";
Byte actual_range 0, 0;
String comment "Slocum Glider NG288";
String id "NG288";
String instrument "instrument_ctd";
String ioos_category "Identifier";
String long_name "Platform Metadata";
String type "platform";
String units "1";
String wmo_id "8901153";
}
precise_lat {
Float64 _FillValue -999.0;
Float64 actual_range 29.762640018520095, 31.610065000569755;
String ancillary_variables "lat_qc";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "Interpolated latitude at each point in the time-series";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String ioos_category "Location";
String long_name "Precise Latitude";
String observation_type "measured";
String platform "platform";
String reference "WGS84";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 90.0;
Float64 valid_min -90.0;
}
precise_lon {
Float64 _FillValue -999.0;
Float64 actual_range -79.55105, -75.12527;
String ancillary_variables "lon_qc";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "Interpolated longitude at each point in the time-series";
String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
String ioos_category "Location";
String long_name "Precise Longitude";
String observation_type "measured";
String platform "platform";
String reference "WGS84";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max 180.0;
Float64 valid_min -180.0;
}
precise_time {
Float64 actual_range 1.755276552e+9, 1.762720195e+9;
String ancillary_variables "time_qc";
String calendar "gregorian";
String comment "Timestamp at each point in the time-series";
String ioos_category "Time";
String long_name "Precise Time";
String observation_type "measured";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
pressure {
Float32 _FillValue -999.0;
Float32 actual_range -0.16000001, 964.15;
String ancillary_variables "pressure_qc qartod_pressure_flat_line_flag qartod_pressure_gross_range_flag qartod_pressure_rate_of_change_flag qartod_pressure_spike_flag qartod_pressure_primary_flag";
Float64 colorBarMaximum 2000.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_ctd";
String ioos_category "Pressure";
String long_name "Sea Water Pressure";
String observation_type "measured";
String platform "platform";
String positive "down";
String reference_datum "sea-surface";
String standard_name "sea_water_pressure";
String units "dbar";
Float32 valid_max 2000.0;
Float32 valid_min 0.0;
}
pressure_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "pressure Quality flag";
String standard_name "sea_water_pressure status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
profile_lat_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "profile_lat Quality flag";
String standard_name "latitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
profile_lon_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "profile_lon Quality flag";
String standard_name "longitude status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
profile_time_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 1;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "profile_time Quality flag";
String standard_name "time status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
qartod_conductivity_flat_line_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 2, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_electrical_conductivity";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "flat_line_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_conductivity_gross_range_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 2, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_electrical_conductivity";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "gross_range_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_conductivity_primary_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 2, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_electrical_conductivity";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "aggregate_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_conductivity_rate_of_change_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 2, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_electrical_conductivity";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "rate_of_change_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_conductivity_spike_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 2, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_electrical_conductivity";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "spike_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_density_flat_line_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_density";
String qartod_config "{\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "flat_line_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "flat_line_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_density_gross_range_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_density";
String qartod_config "{\"fail_span\": [1000, 1100], \"suspect_span\": null}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "gross_range_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "gross_range_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_density_primary_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 3;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_density";
String qartod_config "{\"gross_range_test\": {\"fail_span\": [1000, 1100], \"suspect_span\": null}, \"spike_test\": {\"suspect_threshold\": 1.8475330176065181, \"fail_threshold\": 3.6950660352130362}, \"rate_of_change_test\": {\"threshold\": 0.0073401739729693615}, \"flat_line_test\": {\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rollup_qc";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "aggregate_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_density_rate_of_change_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 3;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_density";
String qartod_config "{\"threshold\": 0.0073401739729693615}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rate_of_change_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "rate_of_change_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_density_spike_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_density";
String qartod_config "{\"suspect_threshold\": 1.8475330176065181, \"fail_threshold\": 3.6950660352130362}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "spike_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "spike_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_location_test_flag {
Byte _FillValue 2;
String _Unsigned "false";
Byte actual_range 1, 4;
String dac_comment "The FAIL flag is applied if the profile_(lat, lon) value exceeds 3 standard deviations above the mean of the average lat/lon arrays";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Location Flag for the profile_(lat, lon) variables";
String qartod_module "The GDAC location test does not use the algorithm from https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py (location_test) but instead relies on the statistical median of the lat/lon arrays";
String references "The GDAC uses a modified version of the location test described in https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf";
String standard_name "location_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_pressure_flat_line_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 9;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_pressure";
String qartod_config "{\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "flat_line_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "flat_line_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_pressure_gross_range_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 9;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_pressure";
String qartod_config "{\"suspect_span\": [0, 1000], \"fail_span\": [0, 6000]}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "gross_range_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "gross_range_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_pressure_primary_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 9;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_pressure";
String qartod_config "{\"gross_range_test\": {\"suspect_span\": [0, 1000], \"fail_span\": [0, 6000]}, \"spike_test\": {\"suspect_threshold\": 231.40776064842092, \"fail_threshold\": 462.81552129684184}, \"rate_of_change_test\": {\"threshold\": 0.3483327229817708}, \"flat_line_test\": {\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rollup_qc";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "aggregate_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_pressure_rate_of_change_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 9;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_pressure";
String qartod_config "{\"threshold\": 0.3483327229817708}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rate_of_change_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "rate_of_change_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_pressure_spike_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 9;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_pressure";
String qartod_config "{\"suspect_threshold\": 231.40776064842092, \"fail_threshold\": 462.81552129684184}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "spike_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "spike_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_salinity_flat_line_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_practical_salinity";
String qartod_config "{\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "flat_line_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "flat_line_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_salinity_gross_range_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_practical_salinity";
String qartod_config "{\"fail_span\": [0, 42], \"suspect_span\": [10, 38]}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "gross_range_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "gross_range_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_salinity_primary_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 4;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_practical_salinity";
String qartod_config "{\"gross_range_test\": {\"fail_span\": [0, 42], \"suspect_span\": [10, 38]}, \"spike_test\": {\"suspect_threshold\": 0.550608775236069, \"fail_threshold\": 1.101217550472138}, \"rate_of_change_test\": {\"threshold\": 0.008537972374566851}, \"flat_line_test\": {\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rollup_qc";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "aggregate_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_salinity_rate_of_change_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 3;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_practical_salinity";
String qartod_config "{\"threshold\": 0.008537972374566851}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rate_of_change_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "rate_of_change_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_salinity_spike_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 4;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_practical_salinity";
String qartod_config "{\"suspect_threshold\": 0.550608775236069, \"fail_threshold\": 1.101217550472138}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "spike_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "spike_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_temperature_flat_line_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Flat Line Test for sea_water_temperature";
String qartod_config "{\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "flat_line_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "flat_line_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_temperature_gross_range_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 1;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Gross Range Test for sea_water_temperature";
String qartod_config "{\"suspect_span\": [0, 35], \"fail_span\": [-2, 40]}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "gross_range_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "gross_range_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_temperature_primary_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 3;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Primary Flag for sea_water_temperature";
String qartod_config "{\"gross_range_test\": {\"suspect_span\": [0, 35], \"fail_span\": [-2, 40]}, \"spike_test\": {\"suspect_threshold\": 4.963803915854777, \"fail_threshold\": 9.927607831709555}, \"rate_of_change_test\": {\"threshold\": 0.020214080810546875}, \"flat_line_test\": {\"tolerance\": 0.001, \"suspect_threshold\": 3000, \"fail_threshold\": 5000}}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rollup_qc";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "aggregate_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_temperature_rate_of_change_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 3;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Rate of Change Test for sea_water_temperature";
String qartod_config "{\"threshold\": 0.020214080810546875}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "rate_of_change_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "rate_of_change_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
qartod_temperature_spike_flag {
Byte _FillValue 25;
String _Unsigned "false";
Byte actual_range 1, 2;
String dac_comment "QARTOD TEST RUN";
String flag_meanings "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
Byte flag_values 1, 2, 3, 4, 9;
String ioos_category "Other";
String long_name "QARTOD Spike Test for sea_water_temperature";
String qartod_config "{\"suspect_threshold\": 4.963803915854777, \"fail_threshold\": 9.927607831709555}";
String qartod_package "https://github.com/ioos/ioos_qc/blob/main/ioos_qc/qartod.py";
String qartod_test "spike_test";
String references "https://gliders.ioos.us/files/Manual-for-QC-of-Glider-Data_05_09_16.pdf ";
String standard_name "spike_test_quality_flag";
String units "1";
Byte valid_max 9;
Byte valid_min 1;
}
salinity {
Float32 _FillValue -999.0;
Float32 actual_range 34.354805, 37.104736;
String ancillary_variables "salinity_qc qartod_salinity_flat_line_flag qartod_salinity_gross_range_flag qartod_salinity_rate_of_change_flag qartod_salinity_spike_flag qartod_salinity_primary_flag";
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 30.0;
String instrument "instrument_ctd";
String ioos_category "Salinity";
String long_name "Sea Water Practical Salinity";
String observation_type "calculated";
String platform "platform";
String standard_name "sea_water_practical_salinity";
String units "1";
Float32 valid_max 40.0;
Float32 valid_min 0.0;
}
salinity_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "salinity Quality flag";
String standard_name "sea_water_salinity status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
temperature {
Float32 _FillValue -999.0;
Float32 actual_range 6.6544, 30.9539;
String ancillary_variables "temperature_qc qartod_temperature_flat_line_flag qartod_temperature_gross_range_flag qartod_temperature_rate_of_change_flag qartod_temperature_spike_flag qartod_temperature_primary_flag";
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String instrument "instrument_ctd";
String ioos_category "Temperature";
String long_name "Sea Water Temperature";
String observation_type "measured";
String platform "platform";
String standard_name "sea_water_temperature";
String units "degrees_C";
Float32 valid_max 40.0;
Float32 valid_min -5.0;
}
temperature_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 4;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "temperature Quality flag";
String standard_name "sea_water_temperature status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
time_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 1;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "Time Quality flag";
String standard_name "time status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
time_uv {
Float64 actual_range 1.755298755e+9, 1.762704271e+9;
String calendar "gregorian";
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String ioos_category "Time";
String long_name "Depth-averaged Time";
String observation_type "calculated";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
time_uv_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 1, 1;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "time_uv Quality flag";
String standard_name "time status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
u {
Float64 _FillValue -999.0;
Float64 actual_range -0.4860333800315857, 1.2059086561203003;
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String coordinates "lon_uv lat_uv time_uv";
String ioos_category "Currents";
String long_name "Depth-averaged Eastward Sea Water Velocity";
String observation_type "calculated";
String platform "platform";
String standard_name "eastward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
u_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "u Quality flag";
String standard_name "eastward_sea_water_velocity status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
v {
Float64 _FillValue -999.0;
Float64 actual_range -0.43705931305885315, 0.8674860000610352;
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String comment "The depth-averaged current is an estimate of the net current measured while the glider is underwater. The value is calculated over the entire underwater segment, which may consist of 1 or more dives.";
String coordinates "lon_uv lat_uv time_uv";
String ioos_category "Currents";
String long_name "Depth-averaged Northward Sea Water Velocity";
String observation_type "calculated";
String platform "platform";
String standard_name "northward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
v_qc {
Byte _FillValue -127;
String _Unsigned "false";
Byte actual_range 8, 8;
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed not_used not_used interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String ioos_category "Other";
String long_name "v Quality flag";
String standard_name "northward_sea_water_velocity status_flag";
Byte valid_max 9;
Byte valid_min 0;
}
}
NC_GLOBAL {
String _NCProperties "version=2,netcdf=4.7.0,hdf5=1.10.5,";
String cdm_data_type "TrajectoryProfile";
String cdm_profile_variables "time_uv,lat_uv,lon_uv,u,v,profile_id,time,latitude,longitude";
String cdm_trajectory_variables "trajectory,wmo_id";
String Conventions "Unidata Dataset Discovery v1.0, COARDS, CF-1.6";
String creator_email "glider@ocean.navo.navy.mil";
String creator_name "Glider Operations Center";
String dac_qc_comment "ng288-20250815T0000 (ng288_20251109T202900.nc: conductivity is an array of NaNs)";
String date_created "2025-11-09T20:46:37Z";
String date_issued "2025-11-09T20:46:37Z";
Float64 Easternmost_Easting -75.12610813953488;
String featureType "TrajectoryProfile";
String format_version "IOOS_Glider_NetCDF_v2.0.nc";
Float64 geospatial_lat_max 31.606423192095626;
Float64 geospatial_lat_min 29.763232266158738;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -75.12610813953488;
Float64 geospatial_lon_min -79.5417206655574;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 956.4066;
Float64 geospatial_vertical_min -0.1590063;
String geospatial_vertical_positive "down";
String geospatial_vertical_units "m";
String gts_ingest "true";
String history
"2025-11-09T20:46:37Z Processing/QC using SPECTRE3
2025-11-10T01:36:02Z (local files)
2025-11-10T01:36:02Z http://gliders.ioos.us/erddap/tabledap/ng288-20250815T0000.html";
String id "NG288-20250815T0000";
String infoUrl "https://gliders.ioos.us/erddap/";
String institution "Naval Oceanographic Office";
String ioos_dac_checksum "d41d8cd98f00b204e9800998ecf8427e";
String ioos_dac_completed "False";
String keywords "AUVS > Autonomous Underwater Vehicles, 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 > Density, Earth Science > Oceans > Salinity/Density > Salinity, glider, In Situ Ocean-based platforms > Seaglider, Slocum, Spray, trajectory, underwater glider, water, wmo";
String keywords_vocabularity "GCMD Science Keywords";
String keywords_vocabulary "GCMD Science Keywords";
String license
"*** UNCLASSIFIED PUBLIC DOMAIN *** DISTRIBUTION STATEMENT A: APPROVED FOR PUBLIC RELEASE;
DISTRIBUTION IS UNLIMITED.";
String Metadata_Conventions "Unidata Dataset Discovery v1.0, COARDS, CF-1.6";
String naming_authority "mil.navy.navo";
Float64 Northernmost_Northing 31.606423192095626;
String platform_type "Slocum Glider";
String processing_level "Data QC'd by SPECTRE using Argo QC methodology";
String project "NAVOCEANO";
String publisher_email "glider@ocean.navo.navy.mil";
String publisher_name "Glider Operations Center";
String sea_name "North Atlantic Ocean";
String source "Observational data from a profiling glider";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 29.763232266158738;
String standard_name_vocabulary "Standard Name Table (v73, 23 June 2020)";
String subsetVariables "wmo_id,trajectory,profile_id,time,latitude,longitude";
String summary "Slocum Glider data collected by Naval Oceanographic Office for public release purposes.";
String time_coverage_end "2025-11-09T19:44:35Z";
String time_coverage_start "2025-08-15T17:10:28Z";
String title "ng288-20250815T0000";
Float64 Westernmost_Easting -79.5417206655574;
}
}
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.