ATLAS/ICESat-2 L3B Monthly 3-Month Gridded Dynamic Ocean Topography, Version 1
Data set id:
ATL23
DOI: 10.5067/ATLAS/ATL23.001
This is the most recent version of these data.
Version Summary
Version Summary
Initial release
Overview
This data set contains 3-month gridded averages of dynamic ocean topography (DOT) over midlatitude, north-polar, and south-polar grids derived from the along-track ATLAS/ICESat-2 L3A Ocean Surface Height product (ATL12). Monthly gridded sea surface height (SSH) can be calculated by adding the mean DOT and the weighted average geoid height also provided. Both single beam and all-beam gridded averages are available. Simple averages, degree-of-freedom averages, and averages interpolated to the center of grid cells are included, as well as uncertainty estimates.
Parameter(s):
SEA SURFACE HEIGHT
Platform(s):
ICESat-2
Sensor(s):
ATLAS
Data Format(s):
HDF5
Temporal Coverage:
13 October 2018 to present
Temporal Resolution:
- 3 month
Spatial Resolution:
- 25 km
- 25 km
Spatial Reference System(s):
NSIDC Sea Ice Polar Stereographic North
EPSG:3411
NSIDC Sea Ice Polar Stereographic South
EPSG:3412
WGS 84
EPSG:4326
Spatial Coverage:
N:
88
S:
-88
E:
180
W:
-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
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Sample Data Image
Image
The movie at this link: https://www.youtube.com/watch?v=9wV9WKh2kRg shows monthly gridded (ATL19) and monthly 3-month gridded averages (ATL23) of dynamic ocean topography (DOT) over mid latitudes.
Additional movies such as DOT uncertainty, ice concentration and significant wave height for mid latitude, north-polar and south-polar grids can be downloaded from: https://github.com/suzanne64/ICESat-2_Ocean/tree/main/movies.
Movie credit: Suzanne Dickinson, Applied Physics Laboratory, University of Washington.
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