Validation of High Spatial Resolution Surface Reflectance using a Camera System (CAMSIS).

We present the validation of surface reflectance from Sentinel-2 (S2) produced by LaSRC (Land Surface Reflectance Code) using an automated camera system (CAMSIS). The system is composed of four cameras (470, 550, 650, and 850nm wavelengths), and a motorized reference (50% reflectance) calibration target. CAMSIS is installed 120m above ground on a TV tower (WLEF) near Park Falls, Wisconsin, and captures data every 15 minutes. Surface reflectance and NDVI computed from CAMSIS calibrated data show good agreement when compared to observations from Sentinel-2. These results show good performance of LaSRC atmospheric correction.