Data Availability
All observational data, including the spectrophotometer data, are published in the Environmental Data Initiative repository (Carey et al. 2022a, Carey et al. 2022b, Carey et al. 2022c, Schreiber et al. 2022, Hammond et al. 2022). All code used to analyze the spectrophotometer data with PLSR and generate the figures is available in the Zenodo repository (Hammond 2022).