Abstract

Abstract The distribution of dissolved Mn (dMn) was studied in the Tropical and Equatorial Pacific along a meridional transect beginning at station ALOHA (22.45°N, 158°W) extending southwards to 7°S along 158°W. Results show that in the surface ocean ( 6000 km) from the continents, which suggests that dMn in the deep open ocean is strongly affected by remineralization. The dMn:AOU linear relationship (n = 37, R = 0.87) that we found in this work is consistent with culture studies and can be applied to Mn models to reproduce the observed open-ocean Mn concentrations in deep waters.

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