Sulfur isotope homogeneity of oceanic DMSP and DMS

Sulfur isotope variability of oceanic DMSP generation and its contributions to marine biogenic sulfur emissions.

Oceanic dimethylsulfoniopropionate (DMSP) is the precursor to dimethylsulfide (DMS), which plays a role in climate regulation through transformation to methanesulfonic acid (MSA) and non-seasalt sulfate (NSS-SO(4)(2-)) aerosols. Here, we report measurements of the abundance and sulfur isotope compositions of DMSP from one phytoplankton species (Prorocentrum minimum) and five intertidal macroalg...

A meta-analysis of oceanic DMS and DMSP cycling processes: Disentangling the summer paradox

The biogenic volatile compound dimethylsulfide (DMS) is produced in the ocean mainly from the ubiquitous phytoplankton osmolyte dimethylsulfoniopropionate (DMSP). In the upper mixed layer, DMS concentration and the daily averaged solar irradiance are roughly proportional across latitudes and seasons. This translates into a seasonal mismatch between DMS and phytoplankton biomass at low latitudes...

DMSP and DMS dynamics under different CO2 conditions

Dynamics of dimethylsulphoniopropionate and dimethylsulphide under different CO2 concentrations during a mesocosm experiment M. Vogt, M. Steinke, S. Turner, A. Paulino, M. Meyerhöfer, U. Riebesell, C. LeQuéré, and P. Liss Max-Planck-Institut für Biogeochemie, Postfach 100164, 07701 Jena, Germany Laboratory for Global Marine and Atmospheric Chemistry, School of Environmental Sciences, University...

A dynamic model of oceanic sulfur (DMOS) applied to the Sargasso Sea: Simulating the dimethylsulfide (DMS) summer paradox

Multiple sulfur isotope evidence for massive oceanic sulfate depletion in the aftermath of Snowball Earth

The terminal Neoproterozoic Era (850-542 Ma) is characterized by the most pronounced positive sulfur isotope ((34)S/(32)S) excursions in Earth's history, with strong variability and maximum values averaging δ(34)S∼+38‰. These excursions have been mostly interpreted in the framework of steady-state models, in which ocean sulfate concentrations do not fluctuate (that is, sulfate input equals sulf...