This section presents the GEOTRACES scientific activities.
A new and more quantitative atlas of the deep-sea burial fluxes of major and trace elements
Among other findings, authors find that the new opal flux is roughly a factor of two increase over previous estimates having important implications for the global silicon cycle.
Updated compilation of the global continental and marine lithogenic neodymium isotopic measurements
This new compilation and gridded datasets offer a concrete way forward to improve the application of neodymium isotopes as a useful tracer of ocean circulation.
Neodymium concentrations and isotopes help disentangling Siberian river influences on the Arctic Ocean
Paffrath and co-autors followed the relative contributions of the main Siberian rivers to the waters of the Transpolar Drift using neodymium parameters.
Variable dissolution rates and fates of lithogenic tracers at the air-sea interface
Roy-Barman and co-authors established the dissolution rates from Saharan dust reaching Mediterranean seawater.
When lateral advective transport explains between 80 and 100% of the dissolved aluminium distribution
The results evidence that the effect of advection cannot be neglected in areas where a conjunction of significant horizontal dissolved aluminium gradients and significant horizontal currents is found.
Manganese: a surprising co-limiting factor of phytoplankton growth in the Southern Ocean
One of the main consequences of this work is that manganese should be included in ocean-climate models, more particularly to improve the accuracy of their predictions in this area.
Deep sea lithogenic weathering a source of iron colloids for the ocean
Homoky and co-workers determined the isotope composition of dissolved iron profiles in shallow surface sediments of the South Atlantic Uruguayan margin…
Adding external sources allow a better simulation of the oceanic rare earth elements cycles
Oka and colleagues demonstrate that the global distribution of REE can be reproduced by considering the internal cycle associated with reversible scavenging and external REEs inputs around continental regions.
First direct measurements of luxury iron uptake in natural phytoplankton communities: surprising results!
This study demonstrates the importance of biology and ecology to understanding iron biogeochemistry.
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