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OAS accession Detail for 0177836
| << previous | |revision: 5 |
| accessions_id: | 0177836 | archive |
|---|---|
| Title: | Ocean surface radial velocities obtained by High Frequency (HF) radar in coastal waters of Gulf of Alaska, eastern US/Gulf of Mexico, and western US during June 2007 (NCEI Accession 0177836) |
| Abstract: | 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. |
| Date received: | 20181031 |
| Start date: | 20070601 |
| End date: | 20070630 |
| Seanames: | Channel Islands National Marine Sanctuary, Coastal Waters of Florida, Coastal Waters of Texas, Gulf of Mexico, North Atlantic Ocean, North Pacific Ocean |
| West boundary: | -151.923533 |
| East boundary: | -66.211433 |
| North boundary: | 59.765333 |
| South boundary: | 26.16215 |
| Observation types: | current measurements - surface currents, physical |
| Instrument types: | radar - high frequency oceanographic |
| Datatypes: | CURRENT SPEED - EAST/WEST COMPONENT (U), CURRENT SPEED - NORTH/SOUTH COMPONENT (V) |
| Submitter: | Hervey, Rex V. |
| Submitting institution: | US DOC; NOAA; NWS; National Data Buoy Center |
| Collecting institutions: | California Polytechnic State University - San Luis Obispo, CODAR Ocean Sensors, Ltd., Old Dominion University, Oregon State University, Rutgers, The State University of New Jersey, San Francisco State University, Stevens Institute of Technology, Texas A&M University, The University of Rhode Island, University of Alaska Fairbanks, University of California - Davis; Bodega Marine Laboratory, University of California - San Diego; Scripps Institution of Oceanography, University of California - Santa Barbara, University of Delaware, University of Maine, University of North Carolina - Chapel Hill, University of Southern California, University of South Florida, US DOC; NOAA; National Ocean Service, US Navy; Naval Postgraduate School |
| Contributing projects: | Integrated Ocean Observing System Data Assembly Centers Data Stewardship Program, IOOS |
| Platforms: | |
| Number of observations: | |
| Supplementary information: | Documents about processing HF radar data and other related information are archived in NCEI accession 0126755. |
| Availability date: | |
| Metadata version: | 5 |
| Keydate: | 2018-10-31 16:07:57+00 |
| Editdate: | 2024-03-26 12:14:40+00 |