ATLAS/ICESat-2 L3A Along Track Coastal and Nearshore Bathymetry, Version 3 is now available at the NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC). This data set contains global along-track coastal and nearshore bathymetry, consisting of refraction-corrected seafloor and sea surface heights (orthometric and ellipsoidal heights and instantaneous depths), as well as associated uncertainties. This version represents new processing for identifying bathymetry photons, with the introduction of new photon classifier algorithms, and redesigned final classification logic and blunder detection. The new photon classification “ground” was added to “sea surface”, “bathymetry”, and “other” classifications. In addition, new algorithms and their resultant parameters were added for Kd and surface roughness. Please see the Version Summary on the data set web page for more details.
The previous version of these data will be retired from the NSIDC DAAC on 12 May 2027. Upon retirement, data will no longer be accessible, but all related documentation will remain available on the data set web page for future reference.
Data set DOI: https://doi.org/10.5067/ATLAS/ATL24.003