@article{,
title= {noaa-ncei-sar-winds},
journal= {},
author= {},
year= {},
url= {https://www.ncei.noaa.gov/products/sar-wind-data-quality-monitoring},
abstract= {The NOAA Center for Satellite Applications and Research (STAR) and Office of Satellite Research (OSPO) produce Level-2, high-resolution sea surface wind products based on data captured by Synthetic Aperture Radar (SAR) on board RADARSAT-2, RADARSAT Constellation Mission (RCM), Sentinel-1A and Sentinel-1B satellites. These products have been archived at NCEI to support delayed mode applications including coastal climatologies, synoptic weather study, and wind measurement validation, while also supplying near real-time measurements via NOAA CoastWatch and OSPO.

Contains three separate datasets:

NOAA high resolution sea surface winds data from Synthetic Aperture Radar (SAR) on the RADARSAT Constellation Mission (RCM) satellites

This dataset consists of high-resolution sea surface winds data produced from Synthetic Aperture Radar (SAR) on board the RADARSAT Constellation Mission (RCM) satellites. The basic archive file is a netCDF-4 file containing SAR wind, land mask, and time and earth location information. Images of the SAR wind data in GeoTIFF format are also included. The product covers the geographic extent of the SAR image frame from which it was derived.

These 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. 


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

This dataset consists of high resolution sea surface winds data produced from Synthetic Aperture Radar (SAR) on board the RADARSAT-2 satellite. The basic archive file is a netCDF-4 file containing SAR wind, a land mask, and time and earth location information. Maps of the SAR wind data in GeoTIFF format are also included. The product covers the geographic extent of the SAR image frame from which it was derived.

These 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. 


NOAA high resolution sea surface winds data from Synthetic Aperture Radar (SAR) on the Sentinel-1 satellites

This dataset consists of high resolution sea surface winds data produced from Synthetic Aperture Radar (SAR) on board Sentinel-1A and Sentinel-1B satellites. The basic archive file is a netCDF-4 file containing SAR wind, land mask, and time and earth location information. Also included are maps of the SAR winds in GeoTIFF format. The product covers the geographic extent of the SAR image frame from which it was derived.

These 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. },
keywords= {},
terms= {},
license= {},
superseded= {}
}