Data · collection · 2021
Backscatter-derived Antarctic sea ice roughness proxy from ASCAT
Listed in NASA Earthdata CMR
A primary determinant of microwave backscatter is the Rayleigh-scale roughness.
Description
For instruments observing at C-band and at oblique angles, this corresponds to a roughness scale of ~ 1 cm. Using ASCAT, a C-band scatterometer in polar orbit, we can determine the backscatter (and hence cm-scale roughness) of the sea ice cover on the ocean.
This dataset uses a complex parameterisation of multi-day (5-day) backscatter measurements to parameterise the backscatter into several parameters. For more details on the backscatter parameterisation, see Fraser et al., 2014 (ieeexplore.ieee.org/document/6527913). This dataset consists of 5-daily maps of all backscatter parameters spanning the time period from March 2007 to December 2017.
Read the rest (1 more)
Each map is presented as unformatted binary, and is provided in the NSIDC polar stereographic projection (12.5 km resolution, southern hemisphere, 632*664 px, 32-bit floating point - see nsidc.org/data/polar-stereo/ps_grids.html).
Links
Get the data
- Download the dataset. data.aad.gov.au/eds/5033/download ↗
download · from NASA CMR
Where it is published
- DOI doi.org/10.26179/5dd60df7469e2 ↗
DOI / persistent id · from NASA CMR
Documentation and papers
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=AAS_4301_ASCAT_backscatter… ↗
Citation reference for this metadata record and dataset.
documentation · from NASA CMR
- Public information for AAS project AAS_4301 secure3.aad.gov.au/proms/public/projects/report_project_public.cfm?project_no=AAS… ↗
project · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1667374282-AU_AADC.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1667374282-AU_AADC.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Advanced Scatterometer · Ice Roughness · Meteorological Operational Satellite - A · Sea Ice
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1667374282-AU_AADC | 8 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:ascat | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/cryosphere/sea-ice/ice-roughness | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:metop-a | 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 | |
| publication_date | 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |