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Dataset Title:  Near Real Time Surface Ocean Velocity by South HF Radar network Subscribe RSS
Institution:  Instituto Hidrografico   (Dataset ID: HFR_South_590_IHOC_PL019)
Information:  Summary ? | License ? | Metadata | Background (external link) | Make a graph
 
Dimensions ? Start ? Stride ? Stop ?  Size ?    Spacing ?
 time (UTC) ?      9074    1h 1m 46s (uneven)
  < slider >
 depth (m) ?      1    (just one value)
  < slider >
 BEAR (degree_true) ?      72    5.0 (even)
  < slider >
 RNGE (km) ?      90    1.5112 (even)
  < slider >
 
Grid Variables (which always also download all of the dimension variables)
 RDVA (Radial Sea Water Velocity Away From Instrument, m s-1) ?
 DRVA (Direction of Radial Vector Away From Instrument, degree_true) ?
 EWCT (West-east current component, m s-1) ?
 NSCT (South-north current component, m s-1) ?
 ESPC (Radial Standard Deviation of Current Velocity over the Scatter Patch, m s-1) ?
 ETMP (Radial Standard Deviation of Current Velocity over Coverage Period, m s-1) ?
 MAXV (Radial Sea Water Velocity Away From Instrument Maximum, m s-1) ?
 MINV (Radial Sea Water Velocity Away From Instrument Minimum, m s-1) ?
 ERSC (Radial Sea Water Velocity Spatial Quality Count, 1) ?
 ERTC (Radial Sea Water Velocity Temporal Quality Count, 1) ?
 SPRC (Radial Sea Water Velocity Cross Spectra Range Cell, 1) ?
 POSITION_QC (Position Quality Flags, 1) ?
 QCflag (Overall Quality Flags, 1) ?
 OWTR_QC (Over-water Quality Flags, 1) ?
 MDFL_QC (Median Filter Quality Flags, 1) ?
 VART_QC (Variance Threshold Quality Flags, 1) ?
 CSPD_QC (Velocity Threshold Quality Flags, 1) ?

File type: (more info)

(Documentation / Bypass this form) ?
 
(Please be patient. It may take a while to get the data.)


 

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.569708e+9, 1.6033356e+9;
    String ancillary_variables "TIME_QC";
    String axis "T";
    String calendar "Gregorian";
    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";
  }
  BEAR {
    Float32 actual_range 3.0, 358.0;
    String ancillary_variables "POSITION_QC";
    String axis "X";
    String long_name "Bearing away from instrument";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Bearing";
    String sdn_parameter_urn "SDN:P01::BEARRFTR";
    String sdn_uom_name "Degrees true";
    String sdn_uom_urn "SDN:P06::UABB";
    String units "degree_true";
  }
  RNGE {
    Float32 actual_range 0.0, 134.4968;
    String ancillary_variables "POSITION_QC";
    String axis "Y";
    String long_name "Range away from instrument";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Range (from fixed reference point) by unspecified GPS system";
    String sdn_parameter_urn "SDN:P01::RIFNAX01";
    String sdn_uom_name "Kilometres";
    String sdn_uom_urn "SDN:P06::ULKM";
    String units "km";
  }
  RDVA {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, OWTR_QC, MDFL_QC, CSPD_QC, RDCT_QC";
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    String long_name "Radial Sea Water Velocity Away From Instrument";
    String sdn_P02_urn "SDN:P02::RFVL";
    String sdn_parameter_name "Current speed (Eulerian) in the water body by directional range-gated radar";
    String sdn_parameter_urn "SDN:P01::LCSAWVRD";
    String sdn_uom_name "Metres per second";
    String sdn_uom_urn "SDN:P06::UVAA";
    String standard_name "radial_sea_water_velocity_away_from_instrument";
    String units "m s-1";
    Float32 valid_max 10.0;
    Float32 valid_min -10.0;
  }
  DRVA {
    Float32 _FillValue -2147483.8;
    String ancillary_variables "QCflag, OWTR_QC, MDFL_QC, AVRB_QC, RDCT_QC";
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Direction of Radial Vector Away From Instrument";
    String sdn_P02_urn "SDN:P02::RFVL";
    String sdn_parameter_name "Current direction (Eulerian) in the water body by directional range-gated radar";
    String sdn_parameter_urn "SDN:P01::LCDAWVRD";
    String sdn_uom_name "Degrees True";
    String sdn_uom_urn "SDN:P06::UABB";
    String standard_name "direction_of_radial_vector_away_from_instrument";
    String units "degree_true";
    Float32 valid_max 360.0;
    Float32 valid_min 0.0;
  }
  EWCT {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, OWTR_QC, MDFL_QC, CSPD_QC, VART_QC, AVRB_QC, RDCT_QC";
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    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";
    Float32 valid_max 10.0;
    Float32 valid_min -10.0;
  }
  NSCT {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, OWTR_QC, MDFL_QC, CSPD_QC, VART_QC, AVRB_QC, RDCT_QC";
    Float64 colorBarMaximum 0.5;
    Float64 colorBarMinimum -0.5;
    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";
    Float32 valid_max 10.0;
    Float32 valid_min -10.0;
  }
  ESPC {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, VART_QC";
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String long_name "Radial Standard Deviation of Current Velocity over the Scatter Patch";
    String sdn_uom_name "Metres per second";
    String sdn_uom_urn "SDN:P06::UVAA";
    String units "m s-1";
    Float32 valid_max 32.0;
    Float32 valid_min -32.0;
  }
  ETMP {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, VART_QC";
    Float64 colorBarMaximum 0.1;
    Float64 colorBarMinimum 0.0;
    String long_name "Radial Standard Deviation of Current Velocity over Coverage Period";
    String sdn_uom_name "Metres per second";
    String sdn_uom_urn "SDN:P06::UVAA";
    String units "m s-1";
    Float32 valid_max 32.0;
    Float32 valid_min -32.0;
  }
  MAXV {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, MDFL_QC, CSPD_QC, VART_QC";
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String long_name "Radial Sea Water Velocity Away From Instrument Maximum";
    String sdn_P02_urn "SDN:P02::RFVL";
    String sdn_parameter_name "Current speed (Eulerian) in the water body by directional range-gated radar";
    String sdn_parameter_urn "SDN:P01::LCSAWVRD";
    String sdn_uom_name "Metres per second";
    String sdn_uom_urn "SDN:P06::UVAA";
    String units "m s-1";
    Float32 valid_max 10.0;
    Float32 valid_min -10.0;
  }
  MINV {
    Float32 _FillValue -32.767;
    String ancillary_variables "QCflag, MDFL_QC, CSPD_QC, VART_QC";
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum -15.0;
    String long_name "Radial Sea Water Velocity Away From Instrument Minimum";
    String sdn_P02_urn "SDN:P02::RFVL";
    String sdn_parameter_name "Current speed (Eulerian) in the water body by directional range-gated radar";
    String sdn_parameter_urn "SDN:P01::LCSAWVRD";
    String sdn_uom_name "Metres per second";
    String sdn_uom_urn "SDN:P06::UVAA";
    String units "m s-1";
    Float32 valid_max 10.0;
    Float32 valid_min -10.0;
  }
  ERSC {
    Int16 _FillValue -32767;
    String ancillary_variables "QCflag";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Radial Sea Water Velocity Spatial Quality Count";
    String sdn_uom_name "Dimensionless";
    String sdn_uom_urn "SDN:P06::UUUU";
    String units "1";
    Int16 valid_max 127;
    Int16 valid_min 0;
  }
  ERTC {
    Int16 _FillValue -32767;
    String ancillary_variables "QCflag";
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Radial Sea Water Velocity Temporal Quality Count";
    String sdn_uom_name "Dimensionless";
    String sdn_uom_urn "SDN:P06::UUUU";
    String units "1";
    Int16 valid_max 127;
    Int16 valid_min 0;
  }
  SPRC {
    Int16 _FillValue -32767;
    String ancillary_variables "QCflag, OWTR_QC, MDFL_QC, CSPD_QC, VART_QC";
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String long_name "Radial Sea Water Velocity Cross Spectra Range Cell";
    String sdn_uom_name "Dimensionless";
    String sdn_uom_urn "SDN:P06::UUUU";
    String units "1";
    Int16 valid_max 127;
    Int16 valid_min 0;
  }
  POSITION_QC {
    Byte _FillValue -127;
    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 not_used nominal_value interpolated_value missing_value";
    Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
    String long_name "Position Quality Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  QCflag {
    Byte _FillValue -127;
    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 not_used nominal_value interpolated_value missing_value";
    Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
    String long_name "Overall Quality Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  OWTR_QC {
    Byte _FillValue -127;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String comment "OceanSITES quality flagging for Over-water QC test.";
    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 not_used nominal_value interpolated_value missing_value";
    Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
    String long_name "Over-water Quality Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  MDFL_QC {
    Byte _FillValue -127;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String comment "OceanSITES quality flagging for Median Filter QC test. Threshold set to 5 km, 30 deg, 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 not_used nominal_value interpolated_value missing_value";
    Byte flag_values 0, 1, 2, 3, 4, 5, 6, 7, 8, 9;
    String long_name "Median Filter Quality Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  VART_QC {
    Byte _FillValue -127;
    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 not_used 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 Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  CSPD_QC {
    Byte _FillValue -127;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String comment "OceanSITES quality flagging for Velocity Threshold QC test. Threshold set to 1.2 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 not_used 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 Flags";
    String units "1";
    Byte valid_max 9;
    Byte valid_min 0;
  }
  NC_GLOBAL {
    String acknowledgement "Instituto Hidrografico and Puertos del Estado";
    String AngularResolution "5 Deg";
    String area "North Atlantic Ocean";
    String BraggHasSecondOrder "1";
    String calibration_link "margarida.alves@hidrografico.pt";
    String calibration_type "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. Data collected by Instituto Hidrografico and Puertos del Estado and processed by CNR-ISMAR under the EU HFR network.";
    String comment "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 contributor_email "ih.snig.metadados@hidrografico.pt";
    String contributor_name "Instituto Hidrografico";
    String contributor_role "data originator";
    String Conventions "CF-1.6 Jerico-Next-deliverable-D5.14 Copernicus-InSituTAC-Manual-1.0 Copernicus-InSituTAC-SRD-1.4 Copernicus-InSituTAC-ParametersList-3.1.0, COARDS, ACDD-1.3";
    String creator_name "Instituto Hidrografico";
    String creator_type "person";
    String data_assembly_center "European HFR Node";
    String data_character_set "utf8";
    String data_language "eng";
    String data_mode "R";
    String data_type "HF radar radial data";
    String date_created "2020-09-06T10:50:53Z";
    String date_issued "2020-09-06T10:50:53Z";
    String date_modified "2020-10-04T15:43:31Z";
    String date_update "2020-10-04T15:43:31Z";
    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 "Direction Finding";
    String feature_type "surface";
    String format_version "1.2";
    String history 
"2020-09-01T00:00:00Z data collected. 2020-09-06T10:50:53Z netCDF file created and sent to European HFR Node
2020-10-24T23:07:43Z (local files)
2020-10-24T23:07:43Z https://erddap.emodnet-physics.eu/erddap/griddap/HFR_South_590_IHOC_PL019.das";
    String id "GL_RV_HF_HFR-South-590-IHOC-PL019_202009";
    String infoUrl "???";
    String institution "Instituto Hidrografico";
    String institution_edmo_code "590";
    String institution_reference "http://www.hidrografico.pt";
    String keywords "away, BEAR, cell, circulation, component, count, coverage, cross, CSPD_QC, current, currents, data, DEPTH, deviation, direction, direction_of_radial_vector_away_from_instrument, DRVA, earth, Earth Science > Oceans > Ocean Circulation > Ocean Currents, east, eastward, eastward_sea_water_velocity, ERSC, ERTC, ESPC, ETMP, EWCT, filter, flags, frequency, HF, hf radar, hfradar, hidrografico, high, instituto, instrument, maximum, MAXV, MDFL_QC, median, minimum, MINV, near, near real time, network, north, northward, northward_sea_water_velocity, NSCT, ocean, ocean currents, oceans, over, over-water, overall, OWTR_QC, patch, period, position, POSITION_QC, QCflag, quality, radar, radial, radial_sea_water_velocity_away_from_instrument, range, RDVA, real, RNGE, scatter, science, scr-hf, sea, seawater, south, south-north, spatial, spectra, SPRC, standard, surface, surface water, temporal, threshold, time, variance, VART_QC, vector, velocity, water, west, west-east";
    String keywords_vocabulary "GCMD Science Keywords";
    String last_calibration_date "2013-12-09T00:00:00Z";
    String license "License Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)";
    String manufacturer "CODAR Ocean Sensors. SeaSonde";
    String MergeMethod "1 MedianVectors";
    String metadata_character_set "utf8";
    String metadata_contact "lorenzo.corgnati@sp.ismar.cnr.it";
    String metadata_date_stamp "2020-09-06T10:50:53Z";
    String metadata_language "eng";
    String naming_authority "eu.eurogoos";
    String netcdf_format "netcdf4_classic";
    String netcdf_version "4.3.3.1";
    String network "South Portugal HF Radar network";
    String PatternMethod "1 PatternVectors";
    String PatternResolution "1.0 deg";
    String platform_code "HFR-South-590-IHOC-PL019";
    String processing_level "2B";
    String project "MONIZEE; MyCoast; OCASO";
    String publisher_email "euhfrnode@azti.es";
    String publisher_name "European HFR Node";
    String publisher_type "institution";
    String publisher_url "http://eurogoos.eu/";
    String reference_system "EPSG:4806";
    String ReferenceBearing "0 True";
    String references "High Frequency Radar European common data and metadata model Reference Card: all you need to know about High Frequency Radar (HFR) data harmonization at a glance. http://www.marineinsitu.eu/wp-content/uploads/2018/02/HFR_Data_Model_Reference_Card_v1.pdf";
    String sensor "CODAR SeaSonde";
    String site_code "HFR-South";
    String software_name "HFR_Combiner";
    String software_version "v3.3";
    String source "coastal structure";
    String source_platform_category_code "17";
    String sourceUrl "(local files)";
    String SpatialResolution "5 Deg";
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "The data set consists of maps of radial velocity of the sea water surface current collected at Vila Real de Santo Antonio (VATR) site in Southern Portugal. Data are averaged over a time interval of 1 hour around the cardinal hour. High Frequency (HF)-RADAR measurements of ocean velocity are radial in direction relative to the radar location and representative of the upper 0.3-2.5 meters of the ocean.";
    String testOutOfDate "now-3days";
    String time_coverage_duration "PT1H";
    String time_coverage_end "2020-10-22T03:00:00Z";
    String time_coverage_resolution "PT1H";
    String time_coverage_start "2019-09-28T22:00:00Z";
    String title "Near Real Time Surface Ocean Velocity by South HF Radar network";
    String topic_category "oceans";
    String update_interval "void";
  }
}

 

Using griddap to Request Data and Graphs from Gridded Datasets

griddap lets you request a data subset, graph, or map from a gridded dataset (for example, sea surface temperature data from a satellite), via a specially formed URL. griddap uses the OPeNDAP (external link) Data Access Protocol (DAP) (external link) and its projection constraints (external link).

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
https://coastwatch.pfeg.noaa.gov/erddap/griddap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/griddap/jplMURSST41.htmlTable?analysed_sst[(2002-06-01T09:00:00Z)][(-89.99):1000:(89.99)][(-179.99):1000:(180.0)]
Thus, the query is often a data variable name (e.g., analysed_sst), followed by [(start):stride:(stop)] (or a shorter variation of that) for each of the variable's dimensions (for example, [time][latitude][longitude]).

For details, see the griddap Documentation.


 
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