NOAA high resolution sea surface winds data from Synthetic Aperture Radar (SAR) on the RADARSAT-2 satellite

Metadata Updated: February 27, 2019

Synthetic Aperture Radar (SAR)-derived high resolution wind products are calculated from high resolution SAR images of normalized radar cross section (NRCS) of the Earth's surface. Backscattered microwave radar returns from the ocean surface are strongly dependent on wind speed and direction. When no wind is present, the surface of the water is smooth, almost glass-like. Radar energy will largely be reflected away and the radar cross section will be low. As the wind begins to blow, the surface roughens and surface waves begin to develop. As the wind continues to blow more strongly, the amplitude of the wave increases, thus, roughening the surface more. As the surface roughness increases, more energy is backscattered and NRCS increases. Moreover, careful examination of the wind-generated waves reveals that these surface wave crests are generally aligned perpendicular to the prevailing wind direction, suggesting a dependence of backscatter on the relative direction between the incident radar energy and the wind direction. This data set consists of high resolution sea surface winds data derived from SAR on-board RADARSAT-2 satellite. The basic archive file is a NetCDF4 file containing SAR wind, a land mask, and time and earth location information. Also archived are the maps of the SAR wind in GeoTiFF format. The product utilizes the CoastWatch product format and covers the geographic extent of the SAR image frame from which it was derived.

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Dates

Metadata Date February 5, 2019
Metadata Created Date October 3, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) May 7, 2015 (publication), February 5, 2019 (revision)
Frequency Of Update asNeeded

Metadata Source

Harvested from NOAA CSW Harvest Source

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Additional Metadata

Resource Type Series
Metadata Date February 5, 2019
Metadata Created Date October 3, 2016
Metadata Updated Date February 27, 2019
Reference Date(s) May 7, 2015 (publication), February 5, 2019 (revision)
Responsible Party (Point of Contact)
Contact Email
Access Constraints Cite as: Pichel, William G.; Monaldo, Francis M.; Jackson, Christopher R.; Sapper, John; Hatteberg, Rachel (2015). NOAA high resolution sea surface winds data from Synthetic Aperture Radar (SAR) on the RADARSAT-2 satellite. NOAA National Centers for Environmental Information. Dataset. doi:10.7289/V5M906NS [access date], 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.
Bbox East Long 180
Bbox North Lat 90
Bbox South Lat -90
Bbox West Long -180
Coupled Resource
Frequency Of Update asNeeded
Graphic Preview Description Preview graphic
Graphic Preview File https://data.nodc.noaa.gov/cgi-bin/gfx?id=gov.noaa.nodc:SAR-WINDS-RSAT2
Graphic Preview Type PNG
Guid gov.noaa.nodc:SAR-WINDS-RSAT2
Harvest Object Id 504a190a-7588-4b1b-8796-d85a2f4aac6c
Harvest Source Id 2aed8e29-fc5b-4cde-aa66-fb1118fd705e
Harvest Source Title NOAA CSW Harvest Source
Licence accessLevel: Public
Metadata Language eng
Metadata Type geospatial
Progress onGoing
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 2014-05-02

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