Contribution of sandy beaches to the oceanic silica cycle
This paper calls into question the commonly accepted idea of an oceanic silicon cycle in equilibrium.
Global Scale
Deep-sea mining, dewatering waste, accidental plumes and their potential consequences on trace metal fates in the North Pacific Ocean
Xiang and his colleagues conducted laboratory incubation experiments that simulate mining discharge into anoxic waters…
Intrigued by Rare Earth Elements and neodymium isotopes? A review for the curious
Vanessa Hatje and a group of Rare Earth Element (REE) specialists propose an exhaustive review on the behaviour of REE.
MOTES: a new facility designed for trace element sampling in seawater
Zhang and a group of engineers and researchers from Shanghai and Qingdao are presenting a modular trace element sampling facility.
New algorithm unclogs major bottleneck in ocean geochemical and biogeochemical modelling
Numerical models are some of the principal tools for understanding the cycling of geochemical and biogeochemical tracers in the ocean…
North-South radium-228 section in the Pacific Ocean
Moore and colleagues present results from radium-228 along the U.S. GEOTRACES Pacific Meridional Transect (GP15).
Breaking down disciplinary silos in marine sciences, a key to climate forecasting
Alessandro Tagliabue exposes how ocean modelling must evolve to take the biological complexity of the surface ocean into account.
Using machine learning to accurately simulate the oceanic barium distribution
Mete and colleagues used machine learning to predict the global distribution of oceanic barium…
Solid-solution distribution of the cosmogenic beryllium-7 in the water column
This work questions the validity and limits of the hypothesis that particulate beryllium-7 can be neglected in the oceanographic applications of this tracer.
Exhaustive modelling study of the oceanic neodymium parameters
The conclusion of this study reinforces the important role of the solid particles in driving the neodymium oceanic cycle.
Do you want to know more about iron and its isotopes? This review is for you!
Authors present a comprehensive review of iron and iron isotope sources, internal cycling, and sinks in the ocean.
Debate on the dissolved nickel bioavailibility in surface waters
John and co-authors tackle one of the known paradoxes regarding trace metal cycles in the ocean…
Dust deposition rates extracted from a data-assimilation model of the aluminium oceanic cycle
Xu and Weber developed a data-assimilation model of the aluminum oceanic cycle.
Quantifying the weathered fluxes to the ocean is far from over: the overlooked role of rock coast erosion
This study reveals that cliff derived sediment supply is only three times less than the solid discharge of rivers for Europe.
Mercury stable isotopes constrain atmospheric pathways to the ocean
The study’s results hold promise that the implementation of anti-pollution measures under the Minamata Convention will likely result in a faster decrease of oceanic mercury levels than previously thought.
Controls of cadmium-phosphate systematic unraveled by Neural Networks and Ocean Circulation Inverse Model
Roshan and DeVries explore the similarities and contrasts between oceanic cadmium and phosphate cycles using an Artificial Neural Network mapping technique and Ocean Circulation Inverse Model.
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.
Compilation of dissolved organic matter (DOM) data obtained from global ocean observations from 1994 to 2020
This compilation consists of measurements of dissolved organic matter (DOM) and other chemical and hydrographic parameters obtained during the global ocean observations from 1994-01-01 to 2019-12-31.
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.
Constraining Oceanic Copper Cycling through Artificial Intelligence and Ocean Circulation Inverse Model
Using available observations of dissolved copper, artificial neural networks, and an ocean circulation inverse model, authors calculated a global estimate of the 3-dimensional distribution and cycling of dissolved copper in the ocean.
When GEOTRACES‐based synthesis efforts improve global iron-cycling understanding
Using historical (1987-2007) and recent GEOTRACES data, authors compiled an impressive data set comprising dissolved, filtered and trap-collected particulate iron
Estimating Atmospheric Trace Element Deposition Over the Global Ocean
A recently developed method based on the natural radionuclide beryllium-7 has provided a means to estimate the bulk atmospheric trace element deposition velocity
Who produces methylmercury in the global ocean?
The UNEP Minamata Convention was ratified in August 2017 and aims to protect human health from mercury exposure by reducing anthropogenic, inorganic, mercury emissions. The most toxic and biomagnifying mercury […]
Can phytoplankton help us determine the bioavailability of iron in the world ocean?
Joint Science Highlight with US Ocean Carbon and Biogeochemistry (OCB). Iron (Fe) is a key element to life but in seawater it is present at extremely low concentrations. The scarcity […]
Neural network as tools to replace oceanic data deficiencies
The importance of the cycle and speciation of nitrate and its isotopes (δ15N) in the ocean does not have to be demonstrated anymore. In an attempt to overcome the difficulty […]
New BioGEOTRACES data sets: Connecting pieces of the microbial biogeochemical puzzle
Microorganisms play a central role in the transfer of matter and energy in the marine food web. Microbes depend on micronutrients (e.g. iron, cobalt, zinc, and a host of other […]
More realistic oceanic particle field improved the thorium-230 and protactinium-231 modeling
Thorium-230 (230Th) and protactinium-231 (231Pa) are two geochemical tracers extensively used for investigating particle transport in the ocean and reconstructing past ocean circulation. A key feature in reproducing their distributions by […]
Ever wonder how long your favourite element remains in the ocean before it’s gone again?
This timeframe, sometimes called a residence time, ranges from decades for the most reactive trace elements to millions of years for the most unreactive elements such as the major components […]
52 years of Benthic Nepheloid Layer data!
A data base of 2412 profiles collected using the Lamont Thorndike nephelometer from 1964 to 1984 is used to globally map turbid nepheloid layers by Gardner and co-workers (2018, see […]