Fig. 4

Surface distributions of (a,b) river water fraction and (c,d) terrestrial-derived FDOM (C2) (R.U) during the summers of 2019 (left panels) and 2022 (right panels).
Surface distributions of (a,b) river water fraction and (c,d) terrestrial-derived FDOM (C2) (R.U) during the summers of 2019 (left panels) and 2022 (right panels).