ERDDAP > info > HFRADAR_grid_copernicus

Grid DAP Data	Sub- set	Table DAP Data	Make A Graph	W M S	Source Data Files	Acces- sible	Title	Sum- mary	FGDC, ISO, Metadata	Back- ground Info	RSS	E mail	Institution	Dataset ID
data			graph	M		public	Global Ocean, near-surface zonal and meridional raw velocities measured by High Frequency radars		F   I   M	background			MIO	HFRADAR_grid_copernicus

The Dataset's Variables and Attributes

Row Type	Variable Name	Attribute Name	Data Type	Value
attribute	NC_GLOBAL	area	String	Mediterranean Sea
attribute	NC_GLOBAL	calibration_link	String	Dylan Dumas, Charles-Antoine Guerin, Self-calibration and antenna grouping for bistatic oceanographic High-Frequency Radars,2020, https://arxiv.org/abs/2005.10528
attribute	NC_GLOBAL	calibration_type	String	POB: internal; PEY: internal
attribute	NC_GLOBAL	cdm_data_type	String	Grid
attribute	NC_GLOBAL	citation	String	These data were collated within the Copernicus Marine Service (In Situ) and EMODnet collaboration framework. Data is made freely available by the Copernicus Marine Service and the programs that contribute to it.
attribute	NC_GLOBAL	comment	String	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 stationsradials data are processing with hybrid BD/DF method with ...
attribute	NC_GLOBAL	Conventions	String	CF-1.11, Copernicus-InSituTAC-FormatManual-2.0.0, Copernicus-InSituTAC-ParametersList-3.3.0, Copernicus-InSituTAC-AttributesList-1.0.0, COARDS, ACDD-1.3
attribute	NC_GLOBAL	creator_name	String	MIO UMR7294 / OSU Pytheas
attribute	NC_GLOBAL	creator_type	String	institution
attribute	NC_GLOBAL	creator_url	String	http://marine.copernicus.eu
attribute	NC_GLOBAL	data_mode	String	R
attribute	NC_GLOBAL	date_created	String	2024-06-04T16:42:32Z
attribute	NC_GLOBAL	date_modified	String	2024-06-04T16:42:32Z
attribute	NC_GLOBAL	doa_estimation_method	String	Direction Finding
attribute	NC_GLOBAL	Easternmost_Easting	double	6.805672
attribute	NC_GLOBAL	format_version	String	2.0
attribute	NC_GLOBAL	geospatial_lat_max	double	43.05414
attribute	NC_GLOBAL	geospatial_lat_min	double	42.1
attribute	NC_GLOBAL	geospatial_lat_resolution	double	0.009001320754716937
attribute	NC_GLOBAL	geospatial_lat_units	String	degrees_north
attribute	NC_GLOBAL	geospatial_lon_max	double	6.805672
attribute	NC_GLOBAL	geospatial_lon_min	double	5.7
attribute	NC_GLOBAL	geospatial_lon_resolution	double	0.012285244444444447
attribute	NC_GLOBAL	geospatial_lon_units	String	degrees_east
attribute	NC_GLOBAL	history	String	2022-06-16T23:00:00Z data collected. 2024-06-04T16:42:32Z netCDF file created and sent to OSU Pytheas datasets
attribute	NC_GLOBAL	id	String	GL_TV_HF_HFR-MedTln-Total_20220615
attribute	NC_GLOBAL	infoUrl	String	http://marine.copernicus.eu
attribute	NC_GLOBAL	institution	String	MIO
attribute	NC_GLOBAL	institution_country	String	France
attribute	NC_GLOBAL	institution_edmo_code	String	3078
attribute	NC_GLOBAL	institution_references	String	https://www.mio.osupytheas.fr/
attribute	NC_GLOBAL	keywords	String	accuracy, active, atlantic, based, circulation, component, CSPD_QC, current, currents, data, DDNS_QC, density, depth, dilution, driven, earth, Earth Remote Sensing Instruments > Active Remote Sensing > Imaging Radars, Earth Science > Oceans > Ocean Circulation > Ocean Currents, Earth Science > Oceans > Ocean Circulation > Oceean Currents, Earth Science > Oceans > Ocean Circulation > Wind-Driven Circulation, east, eastward, eastward_sea_water_velocity, EWCT, flag, frequency, gdop, GDOP_QC, geometrical, global, HF, hf radar, hf radio, hfr, hfradar, hfradio, high, imaging, In Situ Land-based Platforms > Observatories, In Situ Land-based Platforms > Radio transmitters, instruments, land, land-based, latitude, longitude, measured, mediterranean, meridional, mio, near, near-surface, north, northward, northward_sea_water_velocity, NSCT, observatories, ocean, OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > MEDITERRANEAN SEA, ocean > sea_surface_skin, oceans, oceean, overall, platforms, position, POSITION_QC, precision, QCflag, quality, radar, radars, radio, raw, remote, science, sea, seawater, sensing, situ, skin, south, south-north, statistics, surface, threshold, time, transmitters, UACC, VACC, variance, VART_QC, velocities, velocity, water, west, west-east, wind, wind-driven, zonal
attribute	NC_GLOBAL	keywords_vocabulary	String	GCMD Science Keywords
attribute	NC_GLOBAL	last_calibration_date	String	2022-06-16T23:00:00Z
attribute	NC_GLOBAL	license	String	https://marine.copernicus.eu/user-corner/service-commitments-and-licence
attribute	NC_GLOBAL	naming_authority	String	Copernicus Marine In Situ
attribute	NC_GLOBAL	netcdf_version	String	netCDF-4 classic model
attribute	NC_GLOBAL	Northernmost_Northing	double	43.05414
attribute	NC_GLOBAL	platform_code	String	HFR-MedTln-Total
attribute	NC_GLOBAL	platform_name	String	HFR-MedTln-Total
attribute	NC_GLOBAL	processing_level	String	3A
attribute	NC_GLOBAL	project	String	SINAPSI (13668), SICOMAR PLUS(12402), IMPACT(12271), MOOSE(11574), and JERICO NEXT(12227)
attribute	NC_GLOBAL	publisher_email	String	cmems-service at ifremer.fr
attribute	NC_GLOBAL	publisher_institution	String	European HFR Node
attribute	NC_GLOBAL	publisher_name	String	Copernicus Marine Service
attribute	NC_GLOBAL	publisher_url	String	https://dataset.osupytheas.fr/
attribute	NC_GLOBAL	references	String	http://marine.copernicus.eu http://www.marineinsitu.eu http://www.marineinsitu.eu/wp-content/uploads/2018/02/HFR_Data_Model_Reference_Card_v1.pdf
attribute	NC_GLOBAL	site_code	String	HFR-MedTln
attribute	NC_GLOBAL	source	String	coastal structure
attribute	NC_GLOBAL	source_platform_category_code	String	17
attribute	NC_GLOBAL	sourceUrl	String	(local files)
attribute	NC_GLOBAL	Southernmost_Northing	double	42.1
attribute	NC_GLOBAL	standard_name_vocabulary	String	CF Standard Name Table v70
attribute	NC_GLOBAL	summary	String	Global Ocean - near-surface zonal and meridional raw velocities measured by High Frequency radars. Sea surface currents recorded by High Frequency (HF) radar in the north-western Mediterranean Sea. The network has been in situ on the French Riviera since 2012 and is operated by MIO - the Mediterranean Institute of Oceanography (UMR Aix Marseille Universite, CNRS, IRD, Universite de Toulon).
attribute	NC_GLOBAL	time_coverage_end	String	2022-06-15T23:00:56Z
attribute	NC_GLOBAL	time_coverage_start	String	2022-06-15T00:00:00Z
attribute	NC_GLOBAL	title	String	Global Ocean, near-surface zonal and meridional raw velocities measured by High Frequency radars
attribute	NC_GLOBAL	update_interval	String	void
attribute	NC_GLOBAL	Westernmost_Easting	double	5.7
dimension	time		double	nValues=24, evenlySpaced=false, averageSpacing=1h 0m 2s
attribute	time	_CoordinateAxisType	String	Time
attribute	time	actual_range	double	1.6552512E9, 1.65533405625E9
attribute	time	ancillary_variables	String	TIME_QC
attribute	time	axis	String	T
attribute	time	calendar	String	standard
attribute	time	ioos_category	String	Time
attribute	time	long_name	String	Time
attribute	time	sdn_P02_urn	String	SDN:P02::AYMD
attribute	time	sdn_parameter_name	String	Elapsed time (since 1950-01-01T00:00:00Z)
attribute	time	sdn_parameter_urn	String	SDN:P01::ELTJLD01
attribute	time	sdn_uom_name	String	Days
attribute	time	sdn_uom_urn	String	SDN:P06::UTAA
attribute	time	standard_name	String	time
attribute	time	time_origin	String	01-JAN-1970 00:00:00
attribute	time	units	String	seconds since 1970-01-01T00:00:00Z
attribute	time	valid_max	double	90000.0
attribute	time	valid_min	double	-90000.0
dimension	depth		short	nValues=1, onlyValue=0.0
attribute	depth	_CoordinateAxisType	String	Height
attribute	depth	_CoordinateZisPositive	String	down
attribute	depth	actual_range	short	0, 0
attribute	depth	axis	String	Z
attribute	depth	ioos_category	String	Location
attribute	depth	long_name	String	Depth
attribute	depth	positive	String	down
attribute	depth	standard_name	String	depth
attribute	depth	units	String	m
dimension	latitude		float	nValues=107, evenlySpaced=true, averageSpacing=0.009001320754716937
attribute	latitude	_CoordinateAxisType	String	Lat
attribute	latitude	actual_range	float	42.1, 43.05414
attribute	latitude	ancillary_variables	String	POSITION_QC
attribute	latitude	axis	String	Y
attribute	latitude	ioos_category	String	Location
attribute	latitude	long_name	String	Latitude
attribute	latitude	sdn_P02_urn	String	SDN:P02::ALAT
attribute	latitude	sdn_parameter_name	String	Latitude north
attribute	latitude	sdn_parameter_urn	String	SDN:P01::ALATZZ01
attribute	latitude	sdn_uom_name	String	Degrees north
attribute	latitude	sdn_uom_urn	String	SDN:P06::DEGN
attribute	latitude	standard_name	String	latitude
attribute	latitude	units	String	degrees_north
attribute	latitude	valid_max	float	90.0
attribute	latitude	valid_min	float	-90.0
dimension	longitude		float	nValues=91, evenlySpaced=true, averageSpacing=0.012285244444444447
attribute	longitude	_CoordinateAxisType	String	Lon
attribute	longitude	actual_range	float	5.7, 6.805672
attribute	longitude	ancillary_variables	String	POSITION_QC
attribute	longitude	axis	String	X
attribute	longitude	ioos_category	String	Location
attribute	longitude	long_name	String	Longitude
attribute	longitude	sdn_P02_urn	String	SDN:P02::ALAT
attribute	longitude	sdn_parameter_name	String	Longitude east
attribute	longitude	sdn_parameter_urn	String	SDN:P01::ALONZZ01
attribute	longitude	sdn_uom_name	String	Degrees east
attribute	longitude	sdn_uom_urn	String	SDN:P06::DEGE
attribute	longitude	standard_name	String	longitude
attribute	longitude	units	String	degrees_east
attribute	longitude	valid_max	float	180.0
attribute	longitude	valid_min	float	-180.0
variable	EWCT		double	time, depth, latitude, longitude
attribute	EWCT	_FillValue	double	-32.767
attribute	EWCT	ancillary_variables	String	QCflag VART_QC CSPD_QC DDNS_QC GDOP_QC
attribute	EWCT	colorBarMaximum	double	0.5
attribute	EWCT	colorBarMinimum	double	-0.5
attribute	EWCT	data_mode	String	R
attribute	EWCT	ioos_category	String	Currents
attribute	EWCT	long_name	String	West-east current component
attribute	EWCT	sdn_P02_urn	String	SDN:P02::RFVL
attribute	EWCT	sdn_parameter_name	String	Eastward current velocity in the water body
attribute	EWCT	sdn_parameter_urn	String	SDN:P01::LCEWZZ01
attribute	EWCT	sdn_uom_name	String	Metres per second
attribute	EWCT	sdn_uom_urn	String	SDN:P06::UVAA
attribute	EWCT	standard_name	String	eastward_sea_water_velocity
attribute	EWCT	units	String	m s-1
attribute	EWCT	valid_max	double	10.0
attribute	EWCT	valid_min	double	-10.0
variable	NSCT		double	time, depth, latitude, longitude
attribute	NSCT	_FillValue	double	-32.767
attribute	NSCT	ancillary_variables	String	QCflag VART_QC CSPD_QC DDNS_QC GDOP_QC
attribute	NSCT	colorBarMaximum	double	0.5
attribute	NSCT	colorBarMinimum	double	-0.5
attribute	NSCT	data_mode	String	R
attribute	NSCT	ioos_category	String	Currents
attribute	NSCT	long_name	String	South-north current component
attribute	NSCT	sdn_P02_urn	String	SDN:P02::RFVL
attribute	NSCT	sdn_parameter_name	String	Northward current velocity in the water body
attribute	NSCT	sdn_parameter_urn	String	SDN:P01::LCNSZZ01
attribute	NSCT	sdn_uom_name	String	Metres per second
attribute	NSCT	sdn_uom_urn	String	SDN:P06::UVAA
attribute	NSCT	standard_name	String	northward_sea_water_velocity
attribute	NSCT	units	String	m s-1
attribute	NSCT	valid_max	double	10.0
attribute	NSCT	valid_min	double	-10.0
variable	UACC		double	time, depth, latitude, longitude
attribute	UACC	_FillValue	double	-32.767
attribute	UACC	ancillary_variables	String	QCflag VART_QC
attribute	UACC	colorBarMaximum	double	0.5
attribute	UACC	colorBarMinimum	double	-0.5
attribute	UACC	data_mode	String	R
attribute	UACC	ioos_category	String	Currents
attribute	UACC	long_name	String	Accuracy of surface eastward sea water velocity
attribute	UACC	sdn_uom_name	String	Metres per second
attribute	UACC	sdn_uom_urn	String	SDN:P06::UVAA
attribute	UACC	standard_name	String	eastward_sea_water_velocity
attribute	UACC	units	String	m s-1
attribute	UACC	valid_max	double	10.0
attribute	UACC	valid_min	double	-10.0
variable	VACC		double	time, depth, latitude, longitude
attribute	VACC	_FillValue	double	-32.767
attribute	VACC	ancillary_variables	String	QCflag VART_QC
attribute	VACC	colorBarMaximum	double	0.5
attribute	VACC	colorBarMinimum	double	-0.5
attribute	VACC	data_mode	String	R
attribute	VACC	ioos_category	String	Currents
attribute	VACC	long_name	String	Accuracy of surface northward sea water velocity
attribute	VACC	sdn_uom_name	String	Metres per second
attribute	VACC	sdn_uom_urn	String	SDN:P06::UVAA
attribute	VACC	standard_name	String	northward_sea_water_velocity
attribute	VACC	units	String	m s-1
attribute	VACC	valid_max	double	10.0
attribute	VACC	valid_min	double	-10.0
variable	GDOP		double	time, depth, latitude, longitude
attribute	GDOP	_FillValue	double	-32.767
attribute	GDOP	ancillary_variables	String	QCflag GDOP_QC
attribute	GDOP	colorBarMaximum	double	0.1
attribute	GDOP	colorBarMinimum	double	0.0
attribute	GDOP	comment	String	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.
attribute	GDOP	data_mode	String	R
attribute	GDOP	ioos_category	String	Statistics
attribute	GDOP	long_name	String	Geometrical dilution of precision
attribute	GDOP	sdn_uom_name	String	Dimensionless
attribute	GDOP	sdn_uom_urn	String	SDN:P06::UUUU
attribute	GDOP	units	String	1
attribute	GDOP	valid_max	double	20.0
attribute	GDOP	valid_min	double	-20.0
variable	POSITION_QC		byte	time, depth, latitude, longitude
attribute	POSITION_QC	_FillValue	byte	-127
attribute	POSITION_QC	colorBarMaximum	double	10.0
attribute	POSITION_QC	colorBarMinimum	double	0.0
attribute	POSITION_QC	comment	String	OceanSITES quality flagging for position coordinates.
attribute	POSITION_QC	flag_meanings	String	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
attribute	POSITION_QC	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	POSITION_QC	ioos_category	String	Quality
attribute	POSITION_QC	long_name	String	Position quality flag
attribute	POSITION_QC	units	String	1
attribute	POSITION_QC	valid_max	byte	9
attribute	POSITION_QC	valid_min	byte	0
variable	QCflag		byte	time, depth, latitude, longitude
attribute	QCflag	_FillValue	byte	-127
attribute	QCflag	colorBarMaximum	double	10.0
attribute	QCflag	colorBarMinimum	double	0.0
attribute	QCflag	comment	String	OceanSITES quality flagging for all QC tests.
attribute	QCflag	flag_meanings	String	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
attribute	QCflag	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	QCflag	ioos_category	String	Quality
attribute	QCflag	long_name	String	Overall quality flag
attribute	QCflag	units	String	1
attribute	QCflag	valid_max	byte	9
attribute	QCflag	valid_min	byte	0
variable	VART_QC		byte	time, depth, latitude, longitude
attribute	VART_QC	_FillValue	byte	-127
attribute	VART_QC	colorBarMaximum	double	10.0
attribute	VART_QC	colorBarMinimum	double	0.0
attribute	VART_QC	comment	String	OceanSITES quality flagging for variance threshold QC test. Threshold set to 5 m2/s2.
attribute	VART_QC	flag_meanings	String	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
attribute	VART_QC	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	VART_QC	ioos_category	String	Statistics
attribute	VART_QC	long_name	String	Variance threshold quality flag
attribute	VART_QC	units	String	1
attribute	VART_QC	valid_max	byte	9
attribute	VART_QC	valid_min	byte	0
variable	GDOP_QC		byte	time, depth, latitude, longitude
attribute	GDOP_QC	_FillValue	byte	-127
attribute	GDOP_QC	colorBarMaximum	double	10.0
attribute	GDOP_QC	colorBarMinimum	double	0.0
attribute	GDOP_QC	comment	String	OceanSITES quality flagging for GDOP threshold QC test. Threshold set to 5.
attribute	GDOP_QC	flag_meanings	String	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
attribute	GDOP_QC	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	GDOP_QC	ioos_category	String	Quality
attribute	GDOP_QC	long_name	String	GDOP threshold quality flag
attribute	GDOP_QC	units	String	1
attribute	GDOP_QC	valid_max	byte	9
attribute	GDOP_QC	valid_min	byte	0
variable	DDNS_QC		byte	time, depth, latitude, longitude
attribute	DDNS_QC	_FillValue	byte	-127
attribute	DDNS_QC	colorBarMaximum	double	10.0
attribute	DDNS_QC	colorBarMinimum	double	0.0
attribute	DDNS_QC	comment	String	OceanSITES quality flagging for Data density threshold QC test. Threshold set to 2 radials.
attribute	DDNS_QC	flag_meanings	String	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
attribute	DDNS_QC	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	DDNS_QC	ioos_category	String	Quality
attribute	DDNS_QC	long_name	String	Data density threshold quality flag
attribute	DDNS_QC	units	String	1
attribute	DDNS_QC	valid_max	byte	9
attribute	DDNS_QC	valid_min	byte	0
variable	CSPD_QC		byte	time, depth, latitude, longitude
attribute	CSPD_QC	_FillValue	byte	-127
attribute	CSPD_QC	colorBarMaximum	double	10.0
attribute	CSPD_QC	colorBarMinimum	double	0.0
attribute	CSPD_QC	comment	String	OceanSITES quality flagging for Velocity threshold QC test. Threshold set to 1.5 m/s.
attribute	CSPD_QC	flag_meanings	String	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
attribute	CSPD_QC	flag_values	byte	0, 1, 2, 3, 4, 5, 6, 7, 8, 9
attribute	CSPD_QC	ioos_category	String	Quality
attribute	CSPD_QC	long_name	String	Velocity threshold quality flag
attribute	CSPD_QC	units	String	1
attribute	CSPD_QC	valid_max	byte	9
attribute	CSPD_QC	valid_min	byte	0

The information in the table above is also available in other file formats (.csv, .htmlTable, .itx, .json, .jsonlCSV1, .jsonlCSV, .jsonlKVP, .mat, .nc, .nccsv, .tsv, .xhtml) via a RESTful web service.