Kenneth S. Johnson

SOCCOM and GO-BGC float data - Snapshot 2026-07-01. In Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) and Global Ocean Biogeochemistry (GO-BGC) Biogeochemical-Argo Float Data Archive

Kenneth S. Johnson, Andrea Fassbender, Alison Gray, David Nicholson et autres

This .zip archive contains Quality Controlled float data for biogeochemical profiling floats deployed by the Southern Ocean Carbon and Climate Observation and Modeling (SOCCOM) and Global Ocean Biogeochemistry Array (GO-BGC) projects. Additional University of Washington/MBARI floats deployed outside of these programs have …

SOCCOM and GO-BGC float data - Snapshot 2025-12-21. In Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) and Global Ocean Biogeochemistry (GO-BGC) Biogeochemical-Argo Float Data Archive

Kenneth S. Johnson, Andrea Fassbender, Alison Gray, David Nicholson et autres

This .zip archive contains Quality Controlled float data for biogeochemical profiling floats deployed by the Southern Ocean Carbon and Climate Observation and Modeling (SOCCOM) and Global Ocean Biogeochemistry Array (GO-BGC) projects. Additional University of Washington/MBARI floats deployed outside of these programs have …

BGC-Argo float reveals regime shifts in nitrogen-carbon cycling in an oxygen-deficient zone

Mariana B. Bif, Colette L. Kelly, Mark A. Altabet, Annie Bourbonnais et autres

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Marine heatwaves modulate food webs and carbon transport processes

Mariana B. Bif, Colleen T. E. Kellogg, Yibin Huang, Julia Anstett et autres

Marine heatwave (MHW) impacts on ecosystem functions and services remain poorly constrained due to limited time-resolved datasets integrating physical, chemical, and biological parameters at relevant scales. Here we show that combining over a decade of autonomous Biogeochemical (BGC)-Argo float measurements with water-column …

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BGC‐Argo Floats Reveal Nitrite and Thiosulfate Dynamics in the Oceans With High Spatiotemporal Resolution

Mariana B. Bif, Kenneth S. Johnson

Abstract Marine oxygen deficient zones (ODZs) play a major role in the Earth's biogeochemical cycles and are responsible for nitrogen and sulfur removal from the oceans. Microbial‐reducing reaction processes generate nitrite (NO 2 − ) and sulfur compounds as intermediaries that may …

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Two Decades of Increase in Southern Ocean Net Community Production Revealed by BGC‐Argo Floats

Guillaume Liniger, Jonathan D. Sharp, Yuichiro Takeshita, Kenneth S. Johnson

Abstract Nitrate is an essential nutrient for phytoplankton growth and is a primary component of ocean carbon cycling. In this study, we developed a neural network constrained by the high spatial and temporal coverage of BGC‐Argo floats to predict nitrate in a …

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Author response for "The status of domestic wastewater treatment in the Arctic"

Pernille Erland Jensen, Pekka M. Rossi, Maria Velmitskaya, Ida Beathe Øverjordet et autres

Advancing ocean monitoring and knowledge for societal benefit: the urgency to expand Argo to OneArgo by 2030

Virginie Thierry, Hervé Claustre, Orens Pasqueron de Fommervault, Nathalie Zilberman et autres

The ocean plays an essential role in regulating Earth’s climate, influencing weather conditions, providing sustenance for large populations, moderating anthropogenic climate change, encompassing massive biodiversity, and sustaining the global economy. Human activities are changing the oceans, stressing ocean health, threatening the critical …

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BGC-Argo: Advancing Biogeochemical Ocean Observations to Address Global Challenges

Orens Pasqueron de Fommervault, Kenneth S. Johnson, Hervé Claustre

The world’s oceans are undergoing continuous transformation, driven not only by natural fluctuations but increasingly by human impact. In this context, understanding the ocean through in-situ observations has never been more urgent. Since the 1990s, the Global Ocean Observing System has brought …

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Marine Heatwaves Modulate Food Webs and Carbon Transport Processes

Mariana B. Bif, Colleen T. E. Kellogg, Yibin Huang, Julia Anstett et autres

The impact of marine heatwaves (MHWs) on ecosystem functions and services remains poorly constrained due in part to the limited availability of time-resolved datasets integrating physical, chemical and biological parameters at relevant operating scales. Here we paired over a decade of autonomous …

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Processing BGC-Argo pH data at the DAC level

Kenneth S. Johnson, Joshua N. Plant, Tanya L. Maurer

Seawater proton concentration is a master variable that controls the air-sea gas exchange of CO2, the ability of organisms to produce calcium carbonate shells, and that tracks the production and respiration of organic carbon as CO2 is removed or added to water …

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The status of domestic wastewater treatment in the Arctic

Pekka M. Rossi, Maria Velmitskaya, Ida Beathe Øverjordet, Hrund Ólöf Andradóttir et autres

This paper provides a Panarctic review of the regulations, loads, and treatment of wastewater (WW) discharged in the Arctic region.

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