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    • Near-Real Time Surface Ocean Velocity, Hawaii, 1 km Resolution

    Metadata Updated: November 11, 2023

    Surface ocean velocities estimated from HF-Radar (HFR) are representative of the upper 0.3 - 2.5 meters of the ocean. The main objective of near-real time processing is to produce the best product from available data at the time of processing. Radial velocity measurements are obtained from individual radar sites through the U.S. HF-Radar Network. Hourly radial data are processed by unweighted least-squares on a 1 km resolution grid of Hawaii to produce near real-time surface current maps.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date April 19, 2022
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 11, 2023
    Reference Date(s) January 1, 2012 (creation), January 1, 2012 (issued), June 16, 2020 (revision)
    Frequency Of Update

    Metadata Source

    Harvested from ioos

    Other Data Resources

    Graphic Preview

    Sample image.

    Additional Metadata

    Resource Type Dataset
    Metadata Date April 19, 2022
    Metadata Created Date November 12, 2020
    Metadata Updated Date November 11, 2023
    Reference Date(s) January 1, 2012 (creation), January 1, 2012 (issued), June 16, 2020 (revision)
    Responsible Party U.S. Integrated Ocean Observing System (IOOS) High Frequency Radar Network (HFRNet) (Point of Contact)
    Contact Email
    Guid HFRADAR_USHI_hourly_RTV_1km
    Access Constraints
    Bbox East Long -151.9564971923828
    Bbox North Lat 24.916879653930664
    Bbox South Lat 16.220399856567383
    Bbox West Long -163.14439392089844
    Coupled Resource [{"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}, {"title": [], "href": ["#DataIdentification"], "uuid": []}]
    Frequency Of Update
    Graphic Preview Description Sample image.
    Graphic Preview File http://pacioos.org/metadata/browse/HFRADAR_USHI_hourly_RTV_1km.png
    Harvest Object Id 1f77b4e4-0af7-4acc-963b-198bbcaff19c
    Harvest Source Id 54e15a6e-6dde-4c9c-a8f0-345cc0dfccfb
    Harvest Source Title ioos
    Licence
    Lineage 2009-07-08T00:00:00Z UH/SOEST (P. Flament) deployed HFR array at Koko Head, Oahu (KOK): 21.2608, -157.7028. 2009-12-11T00:00:00Z UH/SOEST (P. Flament) deployed HFR array at Kakaako (Waikiki), Oahu (KAK): 21.2918, -157.8631. 2010-07-28T22:00:00Z IOOS HFRNet (CORDC/UCSD) begins generating Hawaii surface currents from radial velocities. 2010-09-08T06:45:00Z UH/SOEST (P. Flament) deployed HFR array at Kalaeloa (Barbers Point), Oahu (KAL): 21.2975, -158.0836. 2013-03-26T22:30:00Z UH/SOEST (P. Flament) deployed HFR array at Kaena Point, Oahu (KNA): 21.5749, -158.2819. 2013-12-17T06:40:00Z UH/SOEST (P. Flament) deployed HFR array at Keaukaha, Hawaii Island (KKH): 19.7320, -155.0480. 2015-05-05T07:00:00Z UH/SOEST (P. Flament) deployed HFR array at Pepeekeo, Hawaii Island (PPK): 19.8472, -155.0828. 2015-09-14T19:00:00Z UH/SOEST (P. Flament) deployed HFR array at Kapolei, Oahu (KAP): 21.3114, -158.1169. 2020-06-16T00:00:00Z Exclude invalid Kaena Point, Oahu (KNA) data prior to 2019-11-30T16:00:00Z. 2021-04-19T06:19:00Z To comply with new ITU rules and frequency allocations, changed KAK range resolution from 600 m to 750 m (250 kHz to 200 kHz) and PPK from 666 m to 750 m (224 kHz to 200 kHz). Changed KAL, KOK, and KNA frequency to 16.150 MHz with 100 kHz bandwidth (1.5 km), which does not impact their range or resolution.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-163.14439392089844, 16.220399856567383], [-151.9564971923828, 16.220399856567383], [-151.9564971923828, 24.916879653930664], [-163.14439392089844, 24.916879653930664], [-163.14439392089844, 16.220399856567383]]]}
    Progress
    Spatial Data Service Type THREDDS OPeNDAP
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2012-01-01T00:00:00Z
    Temporal Extent End now

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