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Description

The data set (ATL07) contains along-track heights for sea ice and open water leads (at varying length scales) relative to the WGS84 ellipsoid (ITRF2014 reference frame) after adjustment for geoidal and tidal variations, and inverted barometer effects. Height statistics and apparent reflectance 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

Changes for Version 6 include:
<ul>
<li>Added new uncorrected sea ice segment height parameter</li>
<li>Added AMSR2 sea ice concentration data</li>
<li>Implemented land filtering</li>
<li>Added ANC10 ancillary file to read in sea level pressure</li>
<li>Added YAPC parameters</li>
<li>Introduced interpolation and extrapolation routines for ocean tides and mean sea surface (MSS)</li>
<li>Updated the PODPPD_flag filter so that a processing option is available for every flag value</li>
<li>Implemented dynamic inverted barometer for processing; read/interpolate sea level pressure directly from ANC10</li>
<li>Added lineage information to the metadata</li>
<li>Updated the MSS variables description, added mentions of the source of the MSS, and clarified the use of the tide free system</li>
</ul>

Product Summary

Platforms
ICESat-2
Instruments
ATLAS
Spatial Extent

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

Geographic Region
NORTHERN HEMISPHERE ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
ORBIT
Temporal Extent
2018-10-14 to 2025-03-02
Concept ID
C2713030505-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
61503
Processing Level
3
Published
Science Keywords
Sea Ice Elevation

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., & Team, T. I. C. E. S.-2 S. (2023). ATLAS/ICESat-2 L3A Sea Ice Height, Version 6 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL07.006 Date Accessed: 2026-01-08

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