Spatial and diurnal dynamics of dissolved organic matter (DOM) fluorescence and H_2O_2 and the photochemical oxygen demand of surface water DOM across the Subtropical Atlantic Ocean

摘要

Diurnal dynamics of dissolved organic matter (DOM) fluorescence and hydrogen peroxide (H_2O_2) concentrations were followed in the upper 100 m of the water column at five stations across the subtropical Atlantic Ocean in July and August 1996. The 10/100 levels of surface solar radiation for the ultraviolet (UV) B range (at 305- and 320 - nm wavelengths) were at 16 and 23 m in depth and for the UVA range (at 340- and 380-nm wavelengths) were at 35 and 63 m in depth, respectively.