Ocean Carbon & Biogeochemistry

GLODAPv3 – A new version release

On behalf of the GLODAP Reference Group and hundreds of seagoing oceanographers who have tirelessly collected data all over the ocean for several decades, it is our pleasure to announce the release of the new Global Ocean Data Analysis Project version 3, GLODAPv3! Use this link for direct access: GLODAPv3 OCADS landing page and check […]

Celebrating 20 years of OCB + OCB2027 dates

2026 marks 20 years since the OCB Project Office began in 2006 to support science, community, and connection across a globally distributed network of scientists! To celebrate all the accomplishments of the community across these two decades, OCB is convening a one-day virtual symposium on November 18, 2026. The symposium will highlight scientific discoveries, game-changing […]

Save the Date: OCB Workshop on Marine Viruses

OCB WORKSHOP From single cells to ecosystems: Quantifying the role of marine viruses in carbon transport models February 8-10, Grand Galvez Hotel, Galveston, Texas (hybrid) Viruses are a ubiquitous and integral component of Earth’s ecosystems, including marine microbial communities. Virally mediated mechanisms play a central role in carbon cycling and export processes. Despite their known […]

Register for the 7th DMS(P) Symposium: Sulfur Carbon Nexus in the SOLAS Sphere

A joint workshop with SCOR, SOLAS, and Schmidt Sciences: Climate October 12-15, 2026 in person at Bigelow Laboratory (Boothbay Harbor, Maine) and online. The organosulfur compound dimethylsulfoniopropionate (DMSP) ignited an entire subfield of biogeochemistry to investigate the precursor of the “anti-greenhouse gas” dimethylsulfide (DMS). Since then, decades of research have unveiled the importance of DMS(P), […]

New OCSIF Subcommittee

This new OCSIF OCB subcommittee focused on identifying and addressing uncertainties in the seawater carbonate system and increasing measurement inter-comparability, now has a full membership – see the new members and more info here.

Benthic Models & Data Synthesis

New OCB Sediment Biogeochemistry Model Intercomparison Project (SedMIP) Working Group seeking input Do you use and/or build benthic models? With the goal of designing a MIP for benthic models, OCB’s SedMIP WG is conducting an inventory of existing benthic models and would benefit from your feedback on model applications, components, and inputs/outputs to inform our […]

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Recent Science Highlights

The North Atlantic’s microscopic carbon traffic controllers

Each year, as the North Atlantic transitions from turbulent spring mixing to layered summer stratification, a key question emerges: How do these seasonal changes reshape bacterial host-virus interactions and control carbon flux? In a recent study published in Microorganisms, researchers show that seasonal stratification regulates viral activity by modulating encounter rates between viruses and distinct […]

Impacts of warming and circulation slowdown on future ocean carbon cycle feedback

The ocean has absorbed a quarter of anthropogenic CO2 emissions, mitigating changes. However, predicting the future fate of this ‘sink’ is challenging as marine carbon is regulated by a complex set of interacting processes that respond differently to warming. Our recent study teases apart these interactions with a novel mechanistic carbon decomposition and attribution framework […]

Do ecological feedbacks matter in a changing world?

Interactions among organisms shape ecological dynamics, while exchanges with the environment alter physical and chemical conditions. Examples of these include predator-prey dynamics (biotic interaction), the release of nutrients through excretion (chemical changes), or the development of coral reefs (physical changes). Together, these processes can generate feedback loops, which may amplify or buffer the impacts of […]

Beyond carbonate chemistry: Biogenic silica dissolution may weaken carbon sequestration under ocean alkalinity enhancement

Ocean alkalinity enhancement (OAE) is a promising carbon dioxide removal strategy, yet evaluating its net carbon removal potential requires understanding not only seawater carbonate chemistry, but also biological feedbacks that may influence long-term carbon sequestration. While most OAE studies focus on resolving immediate responses during biomass production, much less attention is paid to processes occurring […]

BGC-Argo floats reveal shifting nitrogen cycling in the Eastern Tropical North Pacific

Oxygen-deficient zones are regions of the ocean where microbes consume nitrate in lieu of oxygen. This drives major losses of biologically available nitrogen. In a recent study, we used a BGC-Argo float in the Eastern Tropical North Pacific to remotely observe these processes over nearly three years. Using a new method to extract nitrite from […]

Phytoplankton respond more consistently to nutrient pulses than marine heat waves

How do phytoplankton respond to short-term changes in temperature and nutrient availability, and how does this response vary under different baseline conditions? A recent study perturbed a summer plankton community by manipulating nutrient concentrations and temperature (±4°C) in short-term controlled microcosms to assess the relative impacts of each factor on phytoplankton physiology and community structure. […]

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