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Description

ATL10 contains along-track sea ice freeboard calculated for 10 km swath segments. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the ICESat-2 observatory.

Version Description

-Introduced interpolation of reference surface heights when computing freeboard heights. In previous releases, a static value of the 10 km reference surface was used to compute freeboard heights. In v7, reference surface heights are interpolated (if neighboring reference surfaces are available) to the freeboard height location before freeboard height computation. -Introduced option to include heights computed using a lognormal distribution when available. -Fix oc_depth parameter. Previously, oc_depth only had values of 0.0.

Product Summary

Platforms
ICESat-2
Instruments
ATLAS
Spatial Extent

N: 88 S: -88 E: 180 W: -180

Spatial Reference System(s)
WGS 84 (EPSG:4326)
Location
NORTHERN HEMISPHERE ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2018-10-14 to Present
Temporal Resolution
91 Day
Concept ID
C3565574246-NSIDC_CPRD
Data State
ACTIVE
Number of Files/Granules
65074
Processing Level
3
Published
Science Keywords
Freeboard

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Kwok, R., Petty, A., Cunningham, G., Markus, T., Hancock, D., Ivanoff, A., Wimert, J., Bagnardi, M., Kurtz, N., & the ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Freeboard, Version 7 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10.007 Date Accessed: 2026-07-30

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