Jose, Yonss S. , Dietze, Heiner and Oschlies, Andreas (2017) Linking diverse nutrient patterns to different water masses within anticyclonic eddies in the upwelling system off Peru. Biogeosciences (BG), 14 (6). pp. 1349-1364. DOI 10.5194/bg-14-1349-2017.

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Abstract

Ocean eddies can both trigger mixing (during their formation and decay) and effectively shield water encompassed from being exchanged with ambient water (throughout their lifetimes). These antagonistic effects of eddies complicate the interpretation of synoptic snapshots typically obtained by ship-based oceanographic measurement campaigns. Here we use a coupled physical–biogeochemical model to explore biogeochemical dynamics within anticyclonic eddies in the eastern tropical South Pacific Ocean. The goal is to understand the diverse biogeochemical patterns that have been observed at the subsurface layers of the anticyclonic eddies in this region. Our model results suggest that the diverse subsurface nutrient patterns within eddies are associated with the presence of water masses of different origins at different depths.

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