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Description

ATL10QL is the quick look version of ATL10 and is based on the same algorithms that generate the ATL10 final data products. Once final ATL10 files are available, the corresponding ATL10QL files are removed. 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. -Fixed 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

Location
NORTHERN HEMISPHERE ,
SOUTHERN HEMISPHERE
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2025-06-08 to Present
Concept ID
C3566183646-NSIDC_CPRD
Data State
ACTIVE
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., A. A. Petty, G. Cunningham, T. Markus, D. Hancock, A. Ivanoff, J. Wimert, M. Bagnardi, N. Kurtz, & ICESat-2 Science Team. (2025). ATLAS/ICESat-2 L3A Sea Ice Freeboard Quick Look, Version 7 [Data set]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL10QL.007 Date Accessed: 2026-01-24

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