Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230)
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. 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. Statistics are computed on the distribution of sea ice surface roughness for 10 km along-track segments, for each aircraft flight line.
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA National Centers for Environmental Information",
"@type": "vcard:Contact",
"hasEmail": "mailto:ncei.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | 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. 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. Statistics are computed on the distribution of sea ice surface roughness for 10 km along-track segments, for each aircraft flight line. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "NCEI Dataset Landing Page",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for a descriptive web page with download links.",
"downloadURL": "https://doi.org/10.25921/mp9c-y528",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Descriptive Information",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for a descriptive web page with download links.",
"downloadURL": "https://www.ncei.noaa.gov/archive/accession/oas/209230",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "HTTPS",
"mediaType": "placeholder/value",
"description": "Navigate directly to the URL for data access and direct download.",
"downloadURL": "https://www.ncei.noaa.gov/archive/accession/download/209230",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "FTP",
"mediaType": "placeholder/value",
"description": "These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).",
"downloadURL": "ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0153/0209230/",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"mediaType": "placeholder/value",
"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NCEI Contact Information",
"mediaType": "placeholder/value",
"description": "Information for contacts at NCEI.",
"downloadURL": "https://www.ncei.noaa.gov/contact",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nodc:0209230 |
| issued | 2020-03-09T00:00:00.000+00:00 |
| keyword |
[
"0209230",
"ICE",
"ICE - CHARACTERISTICS",
"LATITUDE",
"LONGITUDE",
"GPS",
"LIDAR",
"model output",
"University of Maryland, College Park",
"Arctic Ocean",
"Baffin Bay",
"Beaufort Sea",
"Chukchi Sea",
"Greenland Sea (including Iceland Sea and North Greenland Sea)",
"Kara Sea",
"Lincoln Sea",
"Northwestern Passages",
"oceanography",
"EARTH SCIENCE > OCEANS > SEA ICE",
"Maximum Surface Roughness",
"Mean Surface Roughness",
"Surface Roughness 25th Percentile",
"Surface Roughness 5th Percentile",
"Surface Roughness 75th Percentile",
"Surface Roughness 95th Percentile",
"Surface Roughness 99th Percentile",
"Time",
"ATM > Airborne Topographic Mapper",
"GPS RECEIVERS > GPS RECEIVERS",
"LIDAR > Light Detection and Ranging",
"Airborne Topographic Mapper (ATM)",
"OCEAN > ARCTIC OCEAN",
"OCEAN > ARCTIC OCEAN > BEAUFORT SEA",
"OCEAN > ARCTIC OCEAN > CHUKCHI SEA",
"WFEL0U"
]
|
| landingPage | https://www.ncei.noaa.gov/contact |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2020-03-27T00:00:00.000+00:00 |
| publisher |
{
"name": "NOAA National Centers for Environmental Information",
"@type": "org:Organization"
}
|
| rights | otherRestrictions |
| spatial | 180.0,67.0,-180.0,90.0 |
| temporal | 2009-03-31T00:00:00+00:00/2018-04-16T00:00:00+00:00 |
| title | Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230) |
