Currents, HF Radar, US East Coast and Gulf of Mexico, RTV, Near-Real Time, 2012-present, Hourly, 6km

Surface ocean velocities estimated from HF-Radar are representative
of the upper 2.4 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 6km resolution grid of the U.S. East and Gulf
Coast to produce near real-time surface current maps.
_CoordSysBuilder=ucar.nc2.dataset.conv.CF1Convention
cdm_data_type=Grid
Conventions=COARDS, CF-1.6, ACDD-1.3
defaultGraphQuery=&.draw=vectors&.color=0x0000FF
Easternmost_Easting=-57.23121
format_version=1.1.00
geospatial_lat_max=46.49442
geospatial_lat_min=21.73596
geospatial_lat_resolution=0.05394
geospatial_lat_units=degrees_north
geospatial_lon_max=-57.23121
geospatial_lon_min=-97.88385
geospatial_lon_resolution=0.0580752
geospatial_lon_units=degrees_east
history=2024-09-30T19:24:46Z hfrnet rtvMergeData: Saving 1223 new solutions
2024-09-30T20:24:22Z hfrnet rtvMergeData: Saving 6024 solutions; 5696
new or updated, 328 unmodified from previous run(s)
2024-09-30T20:24:22Z hfrnet rtvSaveNetcdf: Removed 914 solutions
exceeding HDOP threshold of 1.25 ;
FMRC Best Dataset
id=202409301800siohfruwlsrtvusegc6km
infoUrl=https://cordc.ucsd.edu/projects/mapping/
institution=Coastal Observing Research and Development Center, Scripps Institution of Oceanography
instrument=Earth Remote Sensing Instruments, Active Remote Sensing,
Profilers/Sounders, Radar Sounders, Doppler RADAR
instrument_vocabulary=Global Change Master Directory (GCMD) Keywords, Version 8.6
keywords_vocabulary=GCMD Science Keywords
location=Proto fmrc:HFRADAR_US_East_and_Gulf_Coast_6km_Resolution_Hourly_RTV
naming_authority=edu.ucsd.cordc
Northernmost_Northing=46.49442
processing_level=Near real-time dataset with automated data acquisition and processing
quality control
program=Integrated Ocean Observing System (IOOS)
references=Terrill, E. et al., 2006. Data Management and Real-time Distribution
in the HF-Radar National Network. Proceedings of the MTS/IEEE Oceans
2006 Conference, Boston MA, September 2006.
source=surface ocean velocity field from hf-radar
sourceUrl=https://hfrnet-tds.ucsd.edu/thredds/dodsC/HFR/USEGC/6km/hourly/RTV/HFRADAR_US_East_and_Gulf_Coast_6km_Resolution_Hourly_RTV_best.ncd
Southernmost_Northing=21.73596
standard_name_vocabulary=CF Standard Name Table v70
testOutOfDate=now-1day
time_coverage_end=2024-12-01T15:00:00Z
time_coverage_start=2012-01-01T00:00:00Z
Westernmost_Easting=-97.88385

由高频雷达估算的表观海洋流速，能够准确反映海洋表层2.4米内的流速状况。近实时的数据处理目标在于，基于当时可用的数据，生成最优的产品。径向速度的测量数据通过美国高频雷达网络从各个雷达站点获取。每小时径向数据在6公里分辨率的网格上，通过对美国东海岸和墨西哥湾沿岸的加权最小二乘法进行处理，以生成近实时的海面流速图。
CoordSysBuilder=ucar.nc2.dataset.conv.CF1Convention
cdm_data_type=Grid
Conventions=COARDS, CF-1.6, ACDD-1.3
defaultGraphQuery=&.draw=vectors&.color=0x0000FF
Easternmost_Easting=-57.23121
format_version=1.1.00
geospatial_lat_max=46.49442
geospatial_lat_min=21.73596
geospatial_lat_resolution=0.05394
geospatial_lat_units=degrees_north
geospatial_lon_max=-57.23121
geospatial_lon_min=-97.88385
geospatial_lon_resolution=0.0580752
geospatial_lon_units=degrees_east
history=2024-09-30T19:24:46Z hfrnet rtvMergeData: Saving 1223 new solutions
2024-09-30T20:24:22Z hfrnet rtvMergeData: Saving 6024 solutions; 5696 new or updated, 328 unmodified from previous run(s)
2024-09-30T20:24:22Z hfrnet rtvSaveNetcdf: Removed 914 solutions exceeding HDOP threshold of 1.25
FMRC Best Dataset
id=202409301800siohfruwlsrtvusegc6km
infoUrl=https://cordc.ucsd.edu/projects/mapping/
institution=Coastal Observing Research and Development Center, Scripps Institution of Oceanography
instrument=Earth Remote Sensing Instruments, Active Remote Sensing, Profilers/Sounders, Radar Sounders, Doppler RADAR
instrument_vocabulary=Global Change Master Directory (GCMD) Keywords, Version 8.6
keywords_vocabulary=GCMD Science Keywords
location=Proto fmrc:HFRADAR_US_East_and_Gulf_Coast_6km_Resolution_Hourly_RTV
naming_authority=edu.ucsd.cordc
Northernmost_Northing=46.49442
processing_level=Near real-time dataset with automated data acquisition and processing quality control
program=Integrated Ocean Observing System (IOOS)
references=Terrill, E. et al., 2006. Data Management and Real-time Distribution in the HF-Radar National Network. Proceedings of the MTS/IEEE Oceans 2006 Conference, Boston MA, September 2006.
source=surface ocean velocity field from hf-radar
sourceUrl=https://hfrnet-tds.ucsd.edu/thredds/dodsC/HFR/USEGC/6km/hourly/RTV/HFRADAR_US_East_and_Gulf_Coast_6km_Resolution_Hourly_RTV_best.ncd
Southernmost_Northing=21.73596
standard_name_vocabulary=CF Standard Name Table v70
testOutOfDate=now-1day
time_coverage_end=2024-12-01T15:00:00Z
time_coverage_start=2012-01-01T00:00:00Z
Westernmost_Easting=-97.88385