Biogeochemical Argo
Where Is Oxygen Found in the Ocean? Why It Changes With Depth
Learn why dissolved oxygen is often high near the surface, lower at intermediate depths, and sometimes higher again in deep water—and how to read an oxygen profile.
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Biogeochemical Argo
Read oxygen and other biogeochemical observations in their physical context.
Biogeochemical Argo
Dissolved Oxygen Profiles in BGC Argo Explained
Learn how to interpret dissolved oxygen profiles from BGC Argo, including ventilation, subsurface maxima, and links to physical structure.
Biogeochemical Argo
Dissolved Oxygen Units in Ocean Data: µmol/kg, mL/L, and mg/L
Convert between dissolved oxygen units correctly, understand why µmol/kg needs seawater density, and keep concentration separate from saturation.
Biogeochemical Argo
What Does BGC Argo Measure? Oxygen, Chlorophyll, Nitrate, pH, and Optical Variables
Learn what BGC Argo adds to Core Argo, how its six variable groups are measured, and what each profile can and cannot reveal.
Biogeochemical Argo
How Does Chlorophyll Change With Depth? Deep Chlorophyll Maxima Explained
Learn how to read BGC Argo chlorophyll profiles, recognize a deep chlorophyll maximum, and distinguish pigment changes from biomass changes.