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| Dataset Title: | HFR - NRT Surface Ocean Radial Velocity by HFR_Ibiza - 2018-present
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| Institution: | SOCIB - Balearic Islands Coastal Observing and forecasting System (Dataset ID: HFR_IBIZA_Total) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Data Access Form
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Zoom: ![[The graph you specified. Please be patient.]](https://erddap.emodnet-physics.eu/erddap/griddap/HFR_IBIZA_Total.png?EWCT%5B(2023-05-30T16:00:00Z)%5D%5B(0.0)%5D%5B(38.32299):(39.1067)%5D%5B(0.5038552):(1.400685)%5D&.draw=surface&.vars=longitude%7Clatitude%7CEWCT&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff)
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Attributes {
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.5428016e+9, 1.6854624e+9;
String ancillary_variables "TIME_QC";
String axis "T";
String calendar "standard";
String ioos_category "Time";
String long_name "Time";
String sdn_P02_urn "SDN:P02::AYMD";
String sdn_parameter_name "Elapsed time (since 1950-01-01T00:00:00Z)";
String sdn_parameter_urn "SDN:P01::ELTJLD01";
String sdn_uom_name "Days";
String sdn_uom_urn "SDN:P06::UTAA";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Int16 actual_range 0, 0;
String axis "Z";
String ioos_category "Location";
String long_name "Depth";
String positive "down";
String standard_name "depth";
String units "m";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range 38.32299, 39.1067;
String ancillary_variables "POSITION_QC";
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String sdn_P02_urn "SDN:P02::ALAT";
String sdn_parameter_name "Latitude north";
String sdn_parameter_urn "SDN:P01::ALATZZ01";
String sdn_uom_name "Degrees north";
String sdn_uom_urn "SDN:P06::DEGN";
String standard_name "latitude";
String units "degrees_north";
Float32 valid_max 90.0;
Float32 valid_min -90.0;
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range 0.5038552, 1.400685;
String ancillary_variables "POSITION_QC";
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String sdn_P02_urn "SDN:P02::ALAT";
String sdn_parameter_name "Longitude east";
String sdn_parameter_urn "SDN:P01::ALONZZ01";
String sdn_uom_name "Degrees east";
String sdn_uom_urn "SDN:P06::DEGE";
String standard_name "longitude";
String units "degrees_east";
Float32 valid_max 180.0;
Float32 valid_min -180.0;
}
EWCT {
Float64 _FillValue -32.767;
String ancillary_variables "QCflag, VART_QC, CSPD_QC, DDNS_QC, GDOP_QC";
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String coordsys "geographic";
String data_mode "R";
String ioos_category "Currents";
String long_name "West-east current component";
String sdn_P02_urn "SDN:P02::RFVL";
String sdn_parameter_name "Eastward current velocity in the water body";
String sdn_parameter_urn "SDN:P01::LCEWZZ01";
String sdn_uom_name "Metres per second";
String sdn_uom_urn "SDN:P06::UVAA";
String standard_name "eastward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
NSCT {
Float64 _FillValue -32.767;
String ancillary_variables "QCflag, VART_QC, CSPD_QC, DDNS_QC, GDOP_QC";
Float64 colorBarMaximum 0.5;
Float64 colorBarMinimum -0.5;
String coordsys "geographic";
String data_mode "R";
String ioos_category "Currents";
String long_name "South-north current component";
String sdn_P02_urn "SDN:P02::RFVL";
String sdn_parameter_name "Northward current velocity in the water body";
String sdn_parameter_urn "SDN:P01::LCNSZZ01";
String sdn_uom_name "Metres per second";
String sdn_uom_urn "SDN:P06::UVAA";
String standard_name "northward_sea_water_velocity";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
EWCS {
Float64 _FillValue -32.767;
String ancillary_variables "QCflag, VART_QC";
Float64 colorBarMaximum 0.1;
Float64 colorBarMinimum 0.0;
String data_mode "R";
String long_name "Standard deviation of surface eastward sea water velocity";
String sdn_P02_urn "SDN:P02::RFVL";
String sdn_parameter_name "Eastward current velocity standard deviation in the water body";
String sdn_parameter_urn "SDN:P01::SDEWZZZZ";
String sdn_uom_name "Metres per second";
String sdn_uom_urn "SDN:P06::UVAA";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
NSCS {
Float64 _FillValue -32.767;
String ancillary_variables "QCflag, VART_QC";
Float64 colorBarMaximum 0.1;
Float64 colorBarMinimum 0.0;
String data_mode "R";
String long_name "Standard deviation of surface northward sea water velocity";
String sdn_P02_urn "SDN:P02::RFVL";
String sdn_parameter_name "Northward current velocity standard deviation in the water body";
String sdn_parameter_urn "SDN:P01::SDNSZZZZ";
String sdn_uom_name "Metres per second";
String sdn_uom_urn "SDN:P06::UVAA";
String units "m s-1";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
CCOV {
Float64 _FillValue -2147.483647;
String ancillary_variables "QCflag";
Float64 colorBarMaximum 50.0;
Float64 colorBarMinimum 0.0;
String data_mode "R";
String long_name "Covariance of surface sea water velocity";
String sdn_uom_name "Square metres per second squared";
String sdn_uom_urn "SDN:P06::SQM2";
String units "m2 s-2";
Float64 valid_max 10.0;
Float64 valid_min -10.0;
}
GDOP {
Float64 _FillValue -32.767;
String ancillary_variables "QCflag, GDOP_QC";
Float64 colorBarMaximum 0.1;
Float64 colorBarMinimum 0.0;
String comment "The Geometric Dilution of Precision (GDOP) is the coefficient of the uncertainty, which relates the uncertainties in radial and velocity vectors. The GDOP is a unit-less coefficient, which characterizes the effect that radar station geometry has on the measurement and position determination errors. A low GDOP corresponds to an optimal geometric configuration of radar stations, and results in accurate surface current data. Essentially, GDOP is a quantitative way to relate the radial and velocity vector uncertainties. Setting a threshold on GDOP for total combination avoids the combination of radials with an intersection angle below a certain value. GDOP is a useful metric for filtering errant velocities due to poor geometry.";
String data_mode "R";
String long_name "Geometrical dilution of precision";
String sdn_uom_name "Dimensionless";
String sdn_uom_urn "SDN:P06::UUUU";
String units "1";
Float64 valid_max 20.0;
Float64 valid_min -20.0;
}
POSITION_QC {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for position coordinates.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "Position quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
QCflag {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for all QC tests.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "Overall quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
VART_QC {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for variance threshold QC test. Test not applicable to Direction Finding systems. The Temporal Derivative test is applied.Threshold set to 1 m/s.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "Variance threshold quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
GDOP_QC {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for GDOP threshold QC test. Threshold set to 2.83.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "GDOP threshold quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
DDNS_QC {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for Data density threshold QC test. Threshold set to 3 radials.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "Data density threshold quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
CSPD_QC {
Byte _FillValue -127;
String _Unsigned "false";
Float64 colorBarMaximum 10.0;
Float64 colorBarMinimum 0.0;
String comment "OceanSITES quality flagging for Velocity threshold QC test. Threshold set to 0.7 m/s.";
String conventions "Copernicus Marine In Situ reference table 2";
String flag_meanings "no_qc_performed good_data probably_good_data bad_data_that_are_potentially_correctable bad_data value_changed value_below_detection nominal_value interpolated_value missing_value";
Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
String long_name "Velocity threshold quality flag";
String units "1";
Byte valid_max 9;
Byte valid_min 0;
}
NC_GLOBAL {
String acknowledgement "Ministerio de ciencia e innovacion (http://www.ciencia.gob.es/portal/site/MICINN/). Govern de les Illes Balears (http://www.caib.es/). The network has been designed, implemented and managed through the efforts of SOCIB. The collection of this datasets was partially supported by the Jerico Next (H2020) and CMEMS-SE and INCREASE projects.";
String area "Ibiza Channel";
String calibration_link "FORM: ereyes@socib.es; GALF: ereyes@socib.es";
String calibration_type "FORM: APM; GALF: APM";
String cdm_data_type "Grid";
String citation "These data were collected and made freely available by the Copernicus project and the programs that contribute to it. These data are collected and processed by SOCIB (Balearic Island Coastal and Observing Forecasting System) with the support of different projects: Jerico-Next, INCREASE, CMEMS-INSTAC phase II and IBISAR";
String comment "HFR is nowadays the unique land-based remote sensing technology providing continuous maps of near-real surface currents (0.9m) over wide areas (out of about 85 km from near shore) whit high-spatial (3 km) and temporal resolution (hourly). Two or mode HFR sites are needed for computing the map of total surface current vectors in the overlapping coverage area. Total velocities are derived using least square fit that maps radial velocities measured from individual sites onto a cartesian grid. The final product is a map of the horizontal components of the ocean currents on a regular grid in the area of overlap of two or more radar stations.";
String contact "euhfrnode@azti.es";
String contributor_email "ereyes@socib.es; glopez@socib.es";
String contributor_name "Emma Reyes; Guiomar Lopez";
String contributor_role "HFR expert; HFR expert";
String Conventions "CF-1.6 Copernicus-InSituTAC-FormatManual-1.42 Copernicus-InSituTAC-SRD-1.5 Copernicus-InSituTAC-ParametersList-3.2.1, COARDS, ACDD-1.3";
String creator_name "EUHFRNODE";
String data_assembly_center "European HFR Node";
String data_assembly_center_email "euhfrnode@azti.es";
String data_character_set "utf8";
String data_language "eng";
String data_type "HF radar total data";
String distribution_statement "These data follow Copernicus standards; they are public and free of charge. User assumes all risk for use of data. User must display citation in any publication or product using data. User must contact PI prior to any commercial use of data.";
String DoA_estimation_method "FORM: Direction Finding; GALF: Direction Finding";
Float64 Easternmost_Easting 1.400685;
String feature_type "surface";
Float64 geospatial_lat_max 39.1067;
Float64 geospatial_lat_min 38.32299;
Float64 geospatial_lat_resolution 0.027024482758620662;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 1.400685;
Float64 geospatial_lon_min 0.5038552;
Float64 geospatial_lon_resolution 0.03449345384615385;
String geospatial_lon_units "degrees_east";
String grid_mapping_epsg_code "EPSG:4326";
Float64 grid_mapping_inverse_flattening 298.257223563;
String grid_mapping_name "latitude_longitude";
Float64 grid_mapping_semi_major_axis 6378137.0;
String grid_resolution "3";
String history
"2023-05-30T18:07:40Z https://thredds.hfrnode.eu:8443/thredds/dodsC/EUHFR_NRTcurrent_HFR-Ibiza-Total_v2.2
2023-05-30T18:07:40Z https://erddap.emodnet-physics.eu/griddap/HFR_IBIZA_Total.das";
String infoUrl "https://www.socib.es/";
String institution "SOCIB - Balearic Islands Coastal Observing and forecasting System";
String institution_edmo_code "3410";
String institution_references "https://www.socib.es/";
String keywords "balearic, CCOV, circulation, coastal, component, covariance, CSPD_QC, current, currents, data, DDNS_QC, density, depth, deviation, dilution, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, east, eastward, eastward_sea_water_velocity, EWCS, EWCT, flag, forecasting, frequency, gdop, GDOP_QC, geometrical, HF, hf radar, hfr, hfradar, high, ibiza, islands, latitude, longitude, near, near real time, north, northward, northward_sea_water_velocity, NSCS, NSCT, observing, ocean, ocean currents, oceans, overall, position, POSITION_QC, precision, QCflag, quality, radar, radial, real, science, scr-hf, sea, seawater, socib, south, south-north, standard, surface, surface water, system, threshold, time, variance, VART_QC, velocity, water, west, west-east";
String keywords_vocabulary "GCMD Science Keywords";
String license "HF radar sea surface current velocity dataset by SOCIB is licensed under a Creative Commons Attribution 4.0 International License. You should have received a copy of the license along with this work. If not, see https://creativecommons.org/licenses/by/4.0/.";
String metadata_character_set "utf8";
String metadata_contact "lorenzo.corgnati@sp.ismar.cnr.it";
String metadata_language "eng";
String netcdf_format "netcdf4_classic";
String network "HFR_Ibiza";
Float64 Northernmost_Northing 39.1067;
String owner "SOCIB - Balearic Islands Coastal Observing and forecasting System";
String platform_code "HFR-Ibiza-Total";
String processing_level "3B";
String project "Jerico-Next; INCREASE; CMEMS-INSTAC phase2";
String qc_manual "Recommendation Report 2 on improved common procedures for HFR QC analysis https://dx.doi.org/10.25607/OBP-944";
String reference_system "EPSG:4806";
String references "http://marine.copernicus.eu http://www.marineinsitu.eu http://www.marineinsitu.eu/wp-content/uploads/2018/02/HFR_Data_Model_Reference_Card_v1.pdf";
String sensor "CODAR SeaSonde";
String site_code "HFR-Ibiza";
String sourceUrl "https://thredds.hfrnode.eu:8443/thredds/dodsC/EUHFR_NRTcurrent_HFR-Ibiza-Total_v2.2";
Float64 Southernmost_Northing 38.32299;
String standard_name_vocabulary "CF Standard Name Table v70";
String summary "The data set consists of real-time continuous coastal ocean surface current maps in the Ibiza Channel (Western Mediterranean) averaged over a time interval of 1 hour around the cardinal hour, measured by the coastal High-Frequency Radars installed. Surface ocean velocities estimated by HF Radar are representative of the upper 0.9 meters of the ocean for a central frequency of 13.5 MHz.";
String testOutOfDate "now-1day";
String time_coverage_duration "PT1H";
String time_coverage_end "2023-05-30T16:00:00Z";
String time_coverage_resolution "PT1H";
String time_coverage_start "2018-11-21T12:00:00Z";
String title "HFR - NRT Surface Ocean Radial Velocity by HFR_Ibiza - 2018-present";
String vocablaries "SDN_P01";
Float64 Westernmost_Easting 0.5038552;
}
}
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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.
griddap request URLs must be in the form
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For example,
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