The ICESat-2 Inland Water Height Data Product: Overview and Evaluation Using High Altitude Lidar Observations
Event: 2017 Ocean Surface Topography Science Team Meeting
Session: Science IV: 25 years of satellite altimetry for Cryosphere and Hydrology: from experimental to emerging operational applications
Presentation type: Type Oral
In advance of the mission, the ICESat-2 Inland Water Height algorithm was tested using high altitude airborne Multiple Beam Altimeter Lidar Experimental Lidar (MABEL) observations over wide range of water targets. The current analysis examines several MABEL inland and near coast targets during 2012 to 2015, focusing on the retrieval of surface water height statistics under a range of atmospheric and water conditions. Sites include lakes within the continental U.S. and Alaska, the Chesapeake Bay, and the near shore Atlantic coast.
Overall, the analyses of the MABEL observations have demonstrated an excellent feasibility for the ICESat-2 Inland Water Height algorithm to meet its objective of providing quantifiable surface water height statistics, depending on atmospheric conditions and water states. Future ICESat-2 observations are expected to offer higher elevation precision than is possible from current radar altimeters, thereby offering improved understanding of lake, river and near shore dynamics. Nonetheless, there is continuing need to coordinate ICESat-2 and future radar altimeter observations for improved CAL/VAL.