An airborne ATLAS simulator called the Multiple Altimeter Beam Experimental Lidar (MABEL) has been developed for: 1) the development of ATLAS geophysical algorithms; 2) detailed ATLAS error analysis; and 3) ATLAS model validation. MABEL has recently been deployed over the continental United States and in the Arctic. We will present examples demonstrating the capabilities of MABEL photon-counting data over the Greenland Ice-Sheet and the Arctic sea-ice pack.
Finally we discuss how ICESat-2 data can contribute to research areas beyond the cryosphere including vegetation science, hydrology, ocean surface topography, and atmospheric sciences. The ICESat-2 mission development phase incorporates an applications program so as to ensure the highest possible impact is attained from the mission. The ICESat-2 applications group seek to exploit innovative uses of mission data products in decision-making activities for societal benefit. We will discuss how the ICESat-2 applications group are engaging with the user-community (including NOAA, the National Ice Center, and USGS), via an Early Adopters Program, to explore the feasibility of using ICESat-2 developmental products in operational settings.