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OAS accession Detail for 0209230
| accessions_id: |
0209230 | archive
|
| Title: |
Sea Ice Surface Roughness derived from Airborne Topographic Mapper (ATM) lidar elevation data, Arctic, 2009-2018 (NCEI Accession 0209230) |
| Abstract: |
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. |
| Date received: |
20200211 |
| Start date: |
20090331 |
| End date: |
20180416 |
| Seanames: |
Arctic Ocean, Baffin Bay, Beaufort Sea, Chukchi Sea, Greenland Sea (including Iceland Sea and North Greenland Sea), Kara Sea, Lincoln Sea, Northwestern Passages
|
| West boundary: |
-180 |
| East boundary: |
180 |
| North boundary: |
90 |
| South boundary: |
67 |
| Observation types: |
model output |
| Instrument types: |
GPS, LIDAR
|
| Datatypes: |
ICE, ICE - CHARACTERISTICS, LATITUDE, LONGITUDE
|
| Submitter: |
Duncan, Senior Faculty Specialist Kyle |
| Submitting institution: |
University of Maryland |
| Collecting institutions: |
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| Contributing projects: |
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| Platforms: |
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| Number of observations: |
|
| Supplementary information: |
Submission Package ID: WFEL0U |
| Availability date: |
|
| Metadata version: |
7 |
| Keydate: |
2020-03-09 17:30:49+00 |
| Editdate: |
2024-05-26 04:41:22+00 |