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Data Set ID: 
ATL21

ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 2

This data set contains daily and monthly gridded polar sea surface height (SSH) anomalies, derived from the along-track ATLAS/ICESat-2 L3A Sea Ice Height product (ATL10, V4). The ATL10 product identifies leads in sea ice and establishes a reference sea surface used to estimate SSH in 10 km along-track segments. ATL21 aggregates the ATL10 along-track SSH estimates and computes daily and monthly gridded SSH anomaly in NSIDC Polar Stereographic Northern and Southern Hemisphere 25 km grids.

This is the most recent version of these data.

Version Summary: 

There were no changes in the ATL20 algorithm for this version. The changes in this version stem from the changes in the underlying ATL10, V5 data. See the corresponding ALT10 landing page for details.

COMPREHENSIVE Level of Service

Data: Data integrity and usability verified; data customization services available for select data

Documentation: Key metadata and comprehensive user guide available

User Support: Assistance with data access and usage; guidance on use of data in tools and data customization services

See All Level of Service Details

Parameter(s):
  • SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT > SEA SURFACE HEIGHT > SEA SURFACE HEIGHT ANOMALY _SSHA_
Data Format(s):
  • HDF5
Spatial Coverage:
N: 90, 
S: -90, 
E: 180, 
W: -180
Platform(s):ICESat-2
Spatial Resolution:
  • 25 km x 25 km
Sensor(s):ATLAS
Temporal Coverage:
  • 14 October 2018
Version(s):V2
Temporal Resolution1 month, 1 dayMetadata XML:View Metadata Record
Data Contributor(s):Petty, A. A., R. Kwok, M. Bagnardi, N. Kurtz, J. Wimert, J. Lee, and D. Hancock.

Geographic Coverage

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As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Petty, A. A., R. Kwok, M. Bagnardi, N. Kurtz, J. Wimert, J. Lee, and D. Hancock. 2021. ATLAS/ICESat-2 L3B Daily and Monthly Gridded Polar Sea Surface Height Anomaly, Version 2. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: https://doi.org/10.5067/ATLAS/ATL21.002. [Date Accessed].

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FAQ

What subsetting and reformatting services are available for ICESat-2 data?
The following table describes the subsetting and reformatting services that are currently available for ICESat-2 data via the NASA Earthdata Search tool, along with ... read more