Data · collection
NOAA high resolution sea surface winds data from Synthetic Aperture Radar (SAR) on the Sentinel-1 satellites
Listed in NASA Earthdata CMR
This data set consists of high resolution sea surface winds data produced from Synthetic Aperture Radar (SAR) on board Sentinel-1A and Sentinel-1B satellites.
Description
This product utilizes the CoastWatch product format and the basic archive file is a netCDF-3 file containing SAR wind, land mask, and time and earth location information. Also archived 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.
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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.
Links
Get the data
- DOI doi.org/10.7289/v54q7s2n ↗
Navigate directly to the URL for a descriptive web page with download links.
DOI / persistent id · download · from NASA CMR
- ncei.noaa.gov /data/oceans/sar-winds/sentinel1 ↗
Navigate directly to the URL for data access and direct download.
download · from NASA CMR
- ftp-oceans.ncei.noaa.gov /pub/data.nodc/sar-winds/sentinel1 ↗
These data are available through the File Transfer Protocol (FTP). You may use any FTP client to download these data.
download · from NASA CMR
- ncei.noaa.gov /thredds-ocean/catalog/sar-winds/sentinel1/catalog.html ↗
These data are available through a variety of services via a THREDDS (Thematic Real-time Environmental Distributed Data Services) Data Server (TDS). Depending on the dataset, the TDS can provide WMS,
download · from NASA CMR
Documentation and papers
- Institution web page noaa.gov ↗
documentation · from NASA CMR
- Journal article doi.org/10.1029/2015eo034581 ↗
documentation · from NASA CMR
- Journal article doi.org/10.1109/igarss.2015.7325993 ↗
documentation · from NASA CMR
- coralreefwatch.noaa.gov /satellite/software/cw_cdat/cwf_3_3_0_b54/cw_cf_metadata.pdf ↗
This document is intended to be used by CoastWatch data providers to create NetCDF datasets that conform to the Climate Forecast (CF) 1.4 metadata specifications and contain equivalent information to
documentation · from NASA CMR
- Institution web page nesdis.noaa.gov ↗
documentation · from NASA CMR
- Journal article doi.org/10.1109/igarss.2015.7326934 ↗
documentation · from NASA CMR
- Preview graphic ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc%3ASAR-WI… ↗
preview image · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2089393300-NOAA_NCEI.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2089393300-NOAA_NCEI.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Not provided · SENTINEL-1A · SENTINEL-1B · Synthetic Aperture Radar · Wind Speed
- Inferred from text
- Image 75%
Provenance · 1 source records, 14 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2089393300-NOAA_NCEI | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:sar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/atmosphere/atmospheric-winds/surface-winds/wind-speed | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[modality].local:modality:image | enrichment · NASA CMR | keyword-concept-rules@1.0.0 | title+description (75%) |
| concepts[platform].gcmd_platform:not-provided | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:sentinel-1a | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:sentinel-1b | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| updated_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |