Simultaneous modeling of water-leaving reflectance and sun and sky glint contributions from imaging spectroscopy measurements

Remote imaging spectroscopy, with its ability to quantify phytoplankton pigments, is a powerful tool for monitoring aquatic ecosystems, giving valuable insights into environmental processes. However, the accuracy of these retrievals is impacted by specular glint at the air-water interface. Current imaging spectrometer missions either ignore glint-contaminated pixels or apply <i>post hoc</i> corrections, which can introduce substantial uncertainties in reflectance estimates. To address this challenge, we present an approach that simultaneously models water-leaving reflectance and sun and sky glint contributions from imaging spectroscopy measurements. We reveal the accurate performance of our model by utilizing measurements and derived chlorophyll-a products from the PRISM airborne imaging spectrometer during the SubMesoscale Ocean Dynamics Experiment campaign.