Irradiance-normalized non-photochemical quenching (NPQ): a new proxy of iron stress for phytoplankton
Ryan-Keogh and his colleagues used NPQ to fingerprint the photo-physiological response of phytoplankton to their environment.
Science Highlights
Some recent GEOTRACES science findings are reported below.
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.
Dissolved manganese distribution in the Arabian Sea reveals many variable triggers
Analysis of dissolved manganese on samples collected on GEOTRACES cruises allowed Singh and colleagues to establish its basin-wide distribution in the Arabian Sea.
Dissolved iron II deep concentrations re-estimated considering oxidation kinetic effets
Gonzalez-Santana and his collaborators demonstrated that the oxidation kinetic of the samples combined with analysis of triplicate subsamples led iron (II) concentrations to decrease with time.
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.
Actinium-227 distribution traces at least three processes in the North Atlantic Ocean
Le Roy and colleagues report an oceanic section of Actinium-227 in the North Atlantic Ocean.
Transient tracers, water mass ages and mixing time scales in the Arctic Ocean
Smith and colleagues determined iodine-129, chlorofluorocarbons and sulfur hexafluoride during three GEOTRACES cruises in the Arctic Ocean.
Terrestrial iron inputs and reverse weathering in the Amazon mouth
Understanding the key processes that condition the net input of chemical species to the ocean is an important challenge…
Tracing dust deposition with aluminium and silicate at a resolution never reached before
Benaltabet and his colleagues propose a study of the dissolved aluminium and silicate fate in the Gulf of Aqaba (Red Sea).