Validation of ICESat-2 Derived Data Products on Freshwater Lakes: Bathymetry, Diffuse Attenuation Coefficient for Downwelling Irradiance (<i>K_d </i>), and Particulate Backscatter Coefficient (<i>b</i> _bp)

Monitoring large bodies of water, such as the Laurentian Great Lakes in North America, can be challenging and costly. The bathymetry, diffuse attenuation coefficient for downwelling irradiance ( Kd ), particulate backscattering xmlns:xlink="http://www.w3.org/1999/xlink">bbp ) are important metrics monitoring water quality lakes have typically been measured two ways: 1) via situ sampling campaigns, which expensive, time-consuming, low spatial resolution, 2) passive optical imagery, errors excess 50%. Recently, ICESat-2, an active LiDAR-based satellite, has proven effective deriving , global oceans. However, validation never done on satellite flyovers taken same day measurements. Likewise, studies freshwater environments limited. Here, we compare data sampled from Lake Michigan Big Glen between August 13th 14th, 2021, results derived ICESat-2 flyover region 2021.We find excellent agreement values satellite-derived all three metrics. This suggests that other future satellites will powerful tools lakes.