Fig. 1.

Effects on coastal eutrophication in the SCB. (A–C) Four-year averages (January 1997 to December 2000) of surface chlorophyll concentration (mg Chl ${\mathrm{m}}^{-3}$) from remote sensing and in situ data (A; filled circles are CalCOFI and POTW agency observations, and color contours satellite data) and from the ANTH and CTRL simulations respectively (B and C). (D) Simulated monthly climatology of surface phytoplankton biomass concentration (mmol C ${\mathrm{m}}^{-3}$) in the 0- to 15-km coastal band of the Los Angeles and Orange County regions. The anthropogenic simulation (ANTH) is shown in red, and the control simulation with no terrestrial inputs (CTRL) in blue. Percent values on top of the bars show the change caused by anthropogenically enhanced inputs; pink numbers show the absolute difference between the two simulations. (E) Simulated (ANTH in red and CTRL in blue) and observed (green) probability distribution function of daily surface chlorophyll in the same area as A–C at 10-m depth.