News

Development of a high-resolution marine ecosystem model for predicting the combined impacts of ocean acidification and deoxygenation

Abstract.

"An approach was developed to help evaluate and predict the combined effects of ocean acidification and deoxygenation on calcifying organisms along the coast of Japan. The Coastal and Regional Ocean COmmunity (CROCO) modeling system was set up to couple the Regional Ocean Modeling System (ROMS) to the Pelagic Interaction Scheme for Carbon and Ecosystem Studies (PISCES) biogeochemical model and used to reproduce physical and biochemical processes in the area around Miyako Bay, Iwate Prefecture, Japan. [...]".

 

Source: Frontiers in Marine Science
Authors: Lawrence Patrick C. Bernardo et al.
DOI: https://doi.org/10.3389/fmars.2023.1174892

Read the full article here.


Monsoon-driven seasonal hypoxia along the northern coast of Oman

Abstract.

"Dissolved oxygen and current observations from a cabled ocean observatory in the Sea of Oman show that the annual recurrence of coastal hypoxia, defined as dissolved oxygen concentrations ≤63 μM, is associated with the seasonal cycle of local monsoon winds. The observations represent the first long-term (5+ years) continuous moored observations off the northern Omani coast. During the summer/fall southwest (SW) monsoon season (Jun-Nov), winds in the Sea of Oman generate ocean currents that result in coastal upwelling of subsurface waters with low dissolved oxygen concentrations. [...]".

 

Source: Frontiers in Marine Science
Authors: Steven F. DiMarco et al.
DOI: https://doi.org/10.3389/fmars.2023.1248005

Read the full article here.


Deglacial volcanism and reoxygenation in the aftermath of the Sturtian Snowball Earth

Abstract.

"The Cryogenian Sturtian and Marinoan Snowball Earth glaciations bracket a nonglacial interval during which Demosponge and green-algal biomarkers first appear. To understand the relationships between environmental perturbations and early animal evolution, we measured sulfur and mercury isotopes from the Datangpo Formation from South China. Hg enrichment with positive Δ199Hg excursion suggests enhanced volcanism, potentially due to depressurization of terrestrial magma chambers during deglaciation. [...]".

 

Source: Science Advances
Authors: Menghan Li et al.
DOI: 10.1126/sciadv.adh9502

Read the full article here.


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