Data · collection
Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230)
Listed in NASA Earthdata CMR
The surface roughness is derived from Airborne Topographic Mapper (ATM) lidar elevation data acquired during annual, low-altitude NASA Operation IceBridge airborne surveys over Arctic sea ice between the months of March and May.
Description
Surface roughness is defined as the standard deviation of elevation per unit area. Due to the conical scanning geometry of the ATM lidar, across-track sampling is non-uniform, with sampling density greatest at the swath edges.
To account for the variation in sample density, ATM elevation data are gridded. Each grid cell has an along-track dimension of 30 m and an across-track dimension that is inversely proportional to the across-track sampling density. The grid configuration optimizes ATM sample density providing high-resolution measurements of sea ice surface roughness while still containing enough point measurements for robust statistical calculations.
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Statistics are computed on the distribution of sea ice surface roughness for 10 km along-track segments, for each aircraft flight line.
Links
Get the data
- DOI doi.org/10.25921/mp9c-y528 ↗
Navigate directly to the URL for a descriptive web page with download links.
DOI / persistent id · download · from NASA CMR
- ncei.noaa.gov /archive/accession/download/209230 ↗
Navigate directly to the URL for data access and direct download.
download · from NASA CMR
- ftp-oceans.ncei.noaa.gov /nodc/archive/arc0153/0209230 ↗
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 /archive/accession/oas/209230 ↗
Navigate directly to the URL for a descriptive web page with download links.
download · from NASA CMR
Documentation and papers
- Preview graphic ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc%3A0209230 ↗
preview image · from NASA CMR
Catalogue records · 2
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C2089378737-NOAA_NCEI.umm_json ↗
metadata API · from NASA CMR
- CMR record cmr.earthdata.nasa.gov/search/concepts/C2089378737-NOAA_NCEI.html ↗
catalogue entry · from NASA CMR
Topics
- Stated by source
- Global Positioning System · Light Detection and Ranging · Not provided · Sea Ice
- Inferred from text
- Oceanography 70%
Provenance · 1 source records, 12 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C2089378737-NOAA_NCEI | 13 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[field].anzsrc:group:3708 | enrichment · NASA CMR | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[instrument].gcmd_instrument:gps | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:lidar | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/oceans/sea-ice | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:not-provided | 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 |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |