Skip to main content

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 this version include:
  • The ATL07 QA check (atl07_qa_mod) for insufficient output failure has been updated to only check for valid sea ice segments. Previously, total number of sea ice segments written (valid and invalid) were counted.
  • The description of height_segment_confidence was updated so that it agrees with the coded procedure.
  • A max_incidence_angle filter was implemented and added as a controllable override. If the beam incidence angle exceeds max_incidence_angle, the surface type will be set to -1.
  • A contrast filter has been implemented, but turned off by default. Two new controllable parameters have been added.
  • The podppd flag has been added to the ATL07 product and is used to filter heights and segment surface type.
  • A new parameter height_segment_n_pulse_seg_used has been added to the ATL07 product. This parameter excludes the number of specular returns filtered out of processing, unlike height_segment_n_pulse_seg.
  • The description of photon_rate has been updated so that it is clear how the parameter is computed.
  • Modified the integration test scripts to generate browse products and check for the presence of default1 and default2 plots.
  • Updated the ANC31 sea ice concentration interface to read either v1 or v2 of the sea ice concentration files.
  • New parameters of mean ocean sea level pressure and dynamic inverted barometer effect are calculated in ATL07. These are not currently applied to the heights but could be in future releases. The new parameters are: /ancillary_data/sea_ice /mean_ocean_slp: Mean ocean sea level pressure computed in ATL07 and /gtx/sea_ice_segments/geophysical/height_segment_dynib: Dynamic inverted barometer.

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 2022-10-12
Temporal Resolution
91 Day
Concept ID
C2153574585-NSIDC_CPRD
Data State
DEPRECATED
Number of Files/Granules
0
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., & the ICESat-2 Science Team. (2021). ATLAS/ICESat-2 L3A Sea Ice Height, Version 5 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/ATLAS/ATL07.005 Date Accessed: 2026-09-14

Documents

No Results

QUESTIONS & SUPPORT

Have a question?

Get help with NASA Earth science data, datasets, tools, services, and metadata on the Earthdata Forum. Experienced staff in the data user community review and answer questions.

Get help on Earthdata Forum
Earthdata
Forum

Publications Citing This Dataset

Filters
Title Year Author Topic
Towards a framework for oil classification during oil spills in Arctic open water using microwave remote sensing Desmond, Durell S., Mayvan, Mahdi Zabihi, Chorfa, Nasima, Duong, Nhu, Komarov, Alexander S., Diaz, Aura, Wang, Feiyue, Ehn, Jens, Stern, Gary A., Isleifson, Dustin Sea Ice Elevation
Assessment of the Ice, Cloud, and Land Elevation Satellite-2 Performance Magruder, Lori A., Neumann, Tom, Kurtz, Nathan, Sutterley, Tyler C., Hancock, David, Vornberger, Patricia, Robbins, John, Smith, Benjamin Glacier Elevation/Ice Sheet Elevation, Freeboard, Sea Ice Elevation, Terrain Elevation, Sea Surface Height
Finely resolved along-track wave attenuation estimates in the Antarctic marginal ice zone from ICESat-2 Voermans, Joey J., Fraser, Alexander D., Brouwer, Jill, Meylan, Michael H., Liu, Qingxiang, Babanin, Alexander V. Sea Ice Elevation
Merging Recent Mean Sea Surface Into a 2023 Hybrid Model (From Scripps, DTU, CLS, and CNES) Laloue, A., Schaeffer, P., Pujol, M.I., Veillard, P., Andersen, O., Sandwell, D., Delepoulle, A., Dibarboure, G., Faugere, Y. Sea Ice Elevation
Sea surface wind speed retrieval based on ICESat-2 ocean signal vertical Xu, Jinghong, Liu, Qun, Liu, Chong, Chen, Yatong, Xu, Peituo, Ma, Yue, Chen, Yifu, Zhou, Yudi, Zhang, Han, Sun, Wenbo, Yang, Suhui, Lv, Weige, Wu, Lan, Liu, Dong Sea Ice Elevation, Terrain Elevation, Cloud Properties, Lidar Backscatter
Arctic and Southern Ocean polar sea level maps and along-tracks from multi-mission satellite altimetry from 2011 to 2021 Veillard, Pierre, Prandi, Pierre, Pujol, Marie-Isabelle, Daguze, Jean-Alexis, Piras, Fanny, Dibarboure, Gerald, Faugere, Yannice Sea Ice Elevation
A 12-year climate record of wintertime wave-affected marginal ice zones in the Atlantic Arctic based on CryoSat-2 Zhu, Weixin, Liu, Siqi, Xu, Shiming, Zhou, Lu Sea Ice Elevation
New estimates of pan-Arctic sea ice-atmosphere neutral drag coefficients from ICESat-2 elevation data Mchedlishvili, Alexander, Lupkes, Christof, Petty, Alek, Tsamados, Michel, Spreen, Gunnar Glacier Elevation/Ice Sheet Elevation, Sea Ice Elevation
Observing the evolution of summer melt on multiyear sea icewith ICESat-2 Buckley, Ellen M., Farrell, Sinead L., Herzfeld, Ute C., Webster, Melinda A., Trantow, Thomas, Baney, Oliwia N., Duncan, Kyle A., Han, Huilin, Lawson, Matthew Reflectance, Sea Ice Elevation, Terrain Elevation
Linking scales of sea ice surface topography: evaluation of ICESat-2 measurements with coincident helicopter laser scanning during MOSAiC Ricker, Robert, Fons, Steven, Jutila, Arttu, Hutter, Nils, Duncan, Kyle, Farrell, Sinead L., Kurtz, Nathan T., Fredensborg Hansen, Renee Mie Sea Ice Elevation, Terrain Elevation
Automated Detection and Depth Determination of Melt Ponds on Sea Ice in ICESat-2 ATLAS DataThe Density-Dimension Algorithm for Bifurcating Sea-Ice ... Herzfeld, Ute Christina, Trantow, Thomas M., Han, Huilin, Buckley, Ellen, Farrell, Sinead Louise, Lawson, Matthew Sea Ice Elevation, Terrain Elevation, Freeboard
Adaptive Clustering-based Method for ICESat-2 Sea ice Retrieval Liu, Wenxuan, Jin, Taoyong, Li, Jiancheng, Jiang, Weiping Sea Ice Elevation
ICESat-2 Mission: Contributions of a spaceborne lidar to ocean science Neumann, Thomas, Magruder, Lori, Kurtz, Nathan Sea Ice Elevation, Terrain Elevation, Freeboard, Sea Surface Height, Ice Depth/Thickness, Snow Depth
Windwave attenuation in Arctic sea ice: A DISCUSSION OF REMOTE SENSING CAPABILITIES Collard, Fabrice, Marie, Louis, Nouguier, Frederic, Kleinherenbrink, Marcel, Ehlers, Frithjof, Ardhuin, Fabrice Sea Ice Elevation
Altimetric observation of wave attenuation through the Antarctic marginal ice zone using ICESat-2 Brouwer, Jill, Fraser, Alexander D., Murphy, Damian J., Wongpan, Pat, Alberello, Alberto, Kohout, Alison, Horvat, Christopher, Wotherspoon, Simon, Massom, Robert A., Cartwright, Jessica, Williams, Guy D. Sea Ice Elevation
You're viewing 15 of 15