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Description

This data set (ATL10) contains estimates of sea ice freeboard, calculated using three different approaches. Sea ice leads used to establish the reference sea surface and descriptive statistics used in the height estimates are also provided. The data were acquired by the Advanced Topographic Laser Altimeter System (ATLAS) instrument on board the Ice, Cloud and land Elevation Satellite-2 (ICESat-2) observatory.

Version Description

Added additional freeboard browse images to allow for better qualitative assessment of the product; Fixed a bug that was producing not-a-number (NaN) freeboard values in ATL10 products; Implemented a flag to identify which designated sea surface height (SSH) segments were used to compute reference surfaces; Improved the description of freeboard height in the file metadata; Added a filter prior to sea ice processing that sets upper and lower limits before determining the reference surface. This approach removes outliers that are unreasonable, relative to sea surface height. Separate bounds are used for the Arctic and Antarctic to account for geographic and seasonal dependencies.

Product Summary

Platforms
ICESat-2
Instruments
ATLAS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Spatial Reference System(s)
WGS 84 (EPSG:4326)
Location
NORTHERN HEMISPHERE ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
ORBIT
Temporal Extent
2018-10-14 to 2020-11-11
Temporal Resolution
91 Day
Concept ID
C4115899486-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
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., Cunningham, G., Markus, T., Hancock, D., Morison, J., Palm, S., Farrell, S., Ivanoff, A., Wimert, J., & the ICESat-2 Science Team. (2020). ATLAS/ICESat-2 L3A Sea Ice Freeboard, Version 3 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10.003 Date Accessed: 2026-09-14

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Publications Citing This Dataset

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Title Year Author Topic
Recent Variability in Fracture Characteristics and Ice Flow of Thwaites Wang, Shujie, Alexander, Patrick M., Alley, Richard B., Huang, Zhengrui, Parizek, Byron R., Willet, Amanda G., Anandakrishnan, Sridhar Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Terrain Elevation, Grounding Line, Freeboard, RADAR IMAGERY, Sea Ice Elevation, Sea Ice Elevation, Bathymetry, Bed Elevation, Firn Air Content, Glacier/Ice Sheet Thickness
Refining the sea surface identification approach for determining freeboards in the ICESat-2 sea ice products Kwok, Ron, Petty, Alek A., Bagnardi, Marco, Kurtz, Nathan T., Cunningham, Glenn F., Ivanoff, Alvaro, Kacimi, Sahra VISIBLE IMAGERY, Freeboard
Deriving Antarctic SeaIce Thickness From Satellite Altimetry and Estimating Consistency for NASA's ICESat/ICESat2 Missions Xu, Yue, Li, Huan, Liu, Baojian, Xie, Hongjie, OzsoyCicek, Burcu Ice Roughness, Ice Roughness, Reflectance, Sea Ice Elevation, Sea Ice Elevation, Freeboard
On the physical settings of ice bridge formation in Nares Strait Kirillov, S., Babb, D. G., Komarov, A. S., Dmitrenko, I., Ehn, J. K., Worden, E., Candlish, L., Rysgaard, S., Barber, D. G. Freeboard
Sizes and shapes of sea ice floes broken by wavesa case study from the East Antarctic coast Herman, Agnieszka, Wenta, Marta, Cheng, Sukun Freeboard
Assessing CryoSat2 Antarctic Snow Freeboard Retrievals Using Data From ICESat2 Fons, S. W., Kurtz, N. T., Bagnardi, M., Petty, A. A., Tilling, R. L. Sea Ice Concentration, Freeboard
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