Data Set ID: 

ATLAS/ICESat-2 L3B Monthly Gridded Dynamic Ocean Topography, Version 2

This data set contains monthly gridded dynamic ocean topography (DOT), derived from along-track ATLAS/ICESat-2 L3A Ocean Surface Height product (ATL12, V5). Monthly gridded sea surface height (SSH) can be calculated by adding the mean DOT and the weighted average geoid height also provided in this data set. Both single beam and all-beam gridded averages are available in this data set. Single beam averages are useful to identify biases among the beams and the all-beam averages are advised to use for physical oceanography.

This is the most recent version of these data.

Version Summary: 

Changes for this version include:

  • Added average ice concentrations parameter derived from the ice concentration in ATL12 Version 5

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

Data Format(s):
  • HDF5
Spatial Coverage:
N: 88, 
S: -88, 
E: 180, 
W: -180
Spatial Resolution:
  • 25 km x 25 km
Temporal Coverage:
  • 13 October 2018
Temporal Resolution1 monthMetadata XML:View Metadata Record
Data Contributor(s):Morison, J. H., D. Hancock, S. Dickinson, J. Robbins, and L. Roberts.

Geographic Coverage

Other Access Options

Other 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.

Morison, J. H., D. Hancock, S. Dickinson, J. Robbins, and L. Roberts. 2022. ATLAS/ICESat-2 L3B Monthly Gridded Dynamic Ocean Topography, 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