The Spatiotemporal Distribution of Dissolved Inorganic Carbon in the Global Ocean Interior: Reconstructed through Machine Learning

How well is surface ocean carbon represented in observations and ocean models?

We introduce a general framework for quantifying the information content and representation quality of complex geophysical datasets based on the intrinsic dimension and differentiable information imbalance of data manifolds. We use it to derive and compare optimal representations of surface ocean carbon in the SOCAT da...

Climate Change on marine Ecosystems monitored by radioisotopes: The REMO/ClimOcean project at SPES/LNL RIB facility

Almost one quarter of human-caused carbon dioxide (CO 2 ) emissions are absorbed by oceans, resulting in ocean acidification, i.e. a decrease in the ocean water pH. The large amount of CO 2 molecules was released to the atmosphere during industrial revolution, starting from 170-280 parts per million in the XIX ce...

Systematic Ocean Ventilation Biases in Climate Models Indicated by Chlorofluorocarbon‐12

An accurate representation of ocean ventilation in models is crucial for simulating ocean uptake of heat and carbon, as well as the ocean's supply of oxygen. Using the Inverse Gaussian Transit Time Distribution technique, we assessed ocean ventilation in current climate models via comparing water ages —defined as t...

Climate Change Induced Seasonal Amplification of the Indian Ocean CO 2 Sink

This study investigates changes in the mean and seasonal states of oceanic carbon uptake across the Indian Ocean (IO) using an improved, high‐resolution, observationally constrained long‐term (1980–2019) surface ocean data product. The Arabian Sea shows a ∼14% decline in flux amplitude along with reduced mean source...

Reversed marine phosphorus gradient in the Ediacaran Ocean

The Ediacaran Period (635–539 Ma) witnessed the emergence of early animals, rapid oceanic oxygenation, and rising oceanic P availability. However, the relationships among these developments remain intensely debated. Here, we present high-resolution carbonate-associated phosphate (CAP) data from seven Ediacaran sections...

A warm stagnant ocean leads to deep-ocean deoxygenation without widespread anoxia - by Anthonisz et al.