Refining the sea surface identification approach for determining freeboards in the ICESat-2 sea ice products

• Published in: The cryosphere Vol. 15; no. 2; pp. 821 - 833
• Main Authors: Kwok, Ron, Petty, Alek A, Bagnardi, Marco, Kurtz, Nathan T, Cunningham, Glenn F, Ivanoff, Alvaro, Kacimi, Sahra
• Format: Journal Article
• Language: English
• Published: Katlenburg-Lindau Copernicus GmbH 18.02.2021; Copernicus Publications
• Subjects: Algorithms; Atmospheric data; Clouds; Computer centers; Digital cameras; Estimates; Freeboard; Oceans; Polar environments; Reflectance; Sea ice; Sea level; Sea surface; Segments; Topography; Arctic region

In Release 001 and 002 of the ICESat-2 sea ice products, candidate height segments used to estimate the reference sea surface height for freeboard calculations included two surface types: specular and smooth dark leads. We found that the uncorrected photon rates, used as proxies of surface reflectan...