Ocean surface radial velocities obtained by High Frequency (HF) radar in coastal waters of Gulf of Alaska and eastern US/Gulf of Mexico during November 2006 (NCEI Accession 0176603)

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The National Data Buoy Center in collaboration with the Scripps Institution of Oceanography assembles the data from the Integrated Ocean Observing System Data Assembly Center's Data Stewardship Program and submits the data on a monthly basis to NCEI. Radial velocity files contain metadata in a key-value format while the measured velocities and associated ancillary data are reported in a tab-delimited format.

Remote sensing of ocean surface velocity from shore-based HF radar sites bridges an operational observational gap between point samples obtained from in-situ sampling and synoptic scale relatively low resolution data obtained from satellites by providing continuous mesoscale coverage at relatively high resolution near the coast. HF radar systems measure the speed of ocean surface currents in directions radial to the antenna in near real time. Radial measurements of ocean velocity may be used directly in some applications such as model assimilation but are commonly used in combination with overlapping sites to estimate the total vector ocean velocity. Radial velocities alone are a measurement of surface ocean velocity projected along the direction radial to the antenna.

Systems operate continuously in all weather conditions and are installed near the coastline. Range resolution of measured currents is determined by the radar transmit bandwidth used. Bandwidth is controlled by radio frequency licenses and translates to range resolutions of 0.5 to 6 kilometers. Maximum ranges of current measurements also depend on radar transmit frequency and vary from about 40 km offshore to about 200 km offshore. Velocities are measured in the upper 0.3 - 2.5 meters of the ocean depending on the operating frequency and vertical velocity shear profile.
  • Cite as: Hervey, Rex V.; US DOC/NOAA/NWS > National Data Buoy Center (2018). Ocean surface radial velocities obtained by High Frequency (HF) radar in coastal waters of Gulf of Alaska and eastern US/Gulf of Mexico during November 2006 (NCEI Accession 0176603). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/0176603. Accessed [date].
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Distribution Formats
  • LLUV (Version: 1.12)
    • File Specification: http://support.codar.com/Technicians_Information_Page_for_SeaSondes/Docs/GuidesToFileFormats/File_LonLatUV_RDL_TOT_ELP.pdf
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Distributor DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact Information Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
301-713-3277
NCEI.Info@noaa.gov
Time Period 2006-11-12 to 2006-11-30
Spatial Bounding Box Coordinates
N: 59.765333
S: 27.587583
E: -97.217883
W: -151.923533
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2018-10-29
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Documents about processing HF radar data and other related information are archived in NCEI accession 0126755 (see http://accession.nodc.noaa.gov/0126755)
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Hervey, Rex V.; US DOC/NOAA/NWS > National Data Buoy Center (2018). Ocean surface radial velocities obtained by High Frequency (HF) radar in coastal waters of Gulf of Alaska and eastern US/Gulf of Mexico during November 2006 (NCEI Accession 0176603). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/0176603. Accessed [date].
Cited Authors
Contributors
Resource Providers
Publishers
Theme keywords NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Originator Keywords
  • current radial u-component
  • current radial v-component
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NWS/NDBC > National Data Buoy Center, National Weather Service, NOAA, U.S. Department of Commerce
NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
  • OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO
HF Radar Site Code and Name
  • ANCH - Anchor Point, AK
  • KING - Briscoe King Pavilion, TX
  • NANW - Nanwalek, AK
Project keywords NODC PROJECT NAMES THESAURUS Global Change Master Directory (GCMD) Project Keywords
  • IOOS > Integrated Ocean Observing System
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Hervey, Rex V.; US DOC/NOAA/NWS > National Data Buoy Center (2018). Ocean surface radial velocities obtained by High Frequency (HF) radar in coastal waters of Gulf of Alaska and eastern US/Gulf of Mexico during November 2006 (NCEI Accession 0176603). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://accession.nodc.noaa.gov/0176603. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2018-10-29T20:25:37Z - NCEI Accession 0176603 v1.1 was published.
Output Datasets
Acquisition Information (collection)
Instrument
  • radar - high frequency oceanographic
Last Modified: 2019-08-07T16:21:25Z
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