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    • Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230)

    Metadata Updated: March 6, 2026

    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.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date 2025-05-16T15:45:06Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 6, 2026
    Reference Date(s) March 27, 2020 (publication), March 9, 2020 (creation)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

    Graphic Preview

    Preview graphic

    Additional Metadata

    Resource Type Model
    Metadata Date 2025-05-16T15:45:06Z
    Metadata Created Date December 4, 2020
    Metadata Updated Date March 6, 2026
    Reference Date(s) March 27, 2020 (publication), March 9, 2020 (creation)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0209230
    Access Constraints Cite as: Connor, Laurence; Duncan, Kyle; Farrell, Sinead (2020). Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/mp9c-y528. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long 180
    Bbox North Lat 90
    Bbox South Lat 67
    Bbox West Long -180
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0209230
    Graphic Preview Type PNG
    Harvest Object Id a8056170-f768-456f-aeb6-ec6f0953c18e
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-180.0, 67.0], [180.0, 67.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, 67.0]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2009-03-31
    Temporal Extent End 2018-04-16

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