Aquatic Remote Sensing - Example spectra of water, water with algae, and water with sediment

Example spectra of water, water with algae, and water with sediment. The x-axis is wavelengths of light. For remote sensing of water, we are only interested in the visible range (400 nm – 700 nm) and a little bit of the ultra violet and infrared. The y-axis is the amount of light in each wavelength. Here, it is in units of Remote sensing reflectance (R_rs, sr^-1). (See section on “Image and Data Processing” for more information on data units).