For a list of known issues with this product, see the Known Issues document under the Technical References tab.
Data Set ID: 

ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 2

This data set (ATL20) contains daily and monthly gridded estimates of sea ice freeboard, derived from along-track freeboard estimates in the ATLAS/ICESat-2 L3A Sea Ice Freeboard product (ATL10). Data are gridded at 25 km using the SSM/I Polar Stereographic Projection.

There is a more recent version of these data.

Version Summary: 

Changes for this version include:

  • Changed input data from ATL10 Version 3 to ATL10 Version 4.
Data Format(s):
  • HDF5
Spatial Coverage:
N: 90, 
S: -90, 
E: 180, 
W: -180
Spatial Resolution:
  • 25 km x 25 km
Temporal Coverage:
  • 1 November 2018 to 1 July 2021
Temporal Resolution1 month, 1 dayMetadata XML:View Metadata Record
Data Contributor(s):Alek Petty, Ron Kwok, Marco Bagnardi, Alvaro Ivanoff, Nathan Kurtz, Jeff Lee, Jesse Wimert, David Hancock

Geographic Coverage

No access options.

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, A. Ivanoff, N. Kurtz, J. Lee, J. Wimert, and D. Hancock. 2021. ATLAS/ICESat-2 L3B Daily and Monthly Gridded Sea Ice Freeboard, Version 2. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: [Date Accessed].

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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