Measurements taken at the TF0271 station. Panels A, B and C show EF of FDOM in the SML, salinity (in both the SML and bulk water) and photosynthetic yield (F_v/F_m), respectively. Symbols represent one-minute averages; error bars indicate ± standard deviation (n = 923). Panel D shows wind speed and solar radiation measured in five-minute intervals. DOI: https://doi.org/10.1525/elementa.242.f4