Data · collection
NASA Scatterometer (NSCAT)-derived sea ice extent images 1996-1997
Listed in NASA Earthdata CMR
This NASA Scatterometer (NSCAT) data set consists of enhanced resolution radar backscatter (sigma0) images of the Earth's polar regions which have been masked based on the extent of sea ice in the scatterometer images.
Description
Images are generated on polar stereographic and Lambert equal area grids at a pixel resolution of 4.45 km. Images are made using the Scatterometer Image Reconstruction w/filtering (SIRF)algorithm and the scatterometer sea ice extent algorithm of Remund and Long (Q.P. Remund and D.G. Long, Sea Ice Extent Mapping Using Ku-Band Scatterometer Data, Journal of Geophysical Research, Vol. 104, No. C5, pp. 11515-11527, 1999).
For highest possible spatial resolution as well as to ensure full coverage over the images, multiple orbit passes are combined. Images of sigma0 at 40 deg incidence angle (A) in dB and the slope of sigma0 versus incidence angle (B) in dB/deg, along with auxilary parameters, are available. Originally developed to measure winds over the ocean from space, scatterometer data has proved to be very useful in a variety of studies including polar ice and tropical vegetation.
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In particular, scatterometer measurements have demonstrated utility in monitoring melting in Greenland, a leading indicator of global warming. Because the scatterometer radar signal can penetrate the surface, a scatterometer can resolve subsurface limate related features in snow pack. For more information link to the Scatterometer Climate Record Pathfinder (SCP) at URL "scp.byu.edu/" With their rapid global coverage, day or night and all-weather operation, scatterometers offer a unique tools for long-term climate studies.
The goal of the SCP is to provide scatterometer-based datasets to researchers involved in climate studies.
Links
Get the data
- ftp.scp.byu.edu ↗
Scatterometer Climate Record Pathfinder data FTP site.
download · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214608959-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214608959-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Advanced Earth Observing Satellite-I · Ice Extent · NASA Scatterometer · SCATTEROMETERS
- Inferred from text
- Image 75%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214608959-SCIOPS | 14 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:nscat | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:scatterometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice/ice-extent | 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:adeos-i | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |