Editing Marine dissolved oxygen concentration (section)

== Boundary Conditions ==
Boundary inclusions for this signal encompass all dissolved molecular oxygen present in marine waters, including surface, midwater, and benthic zones, measured in situ or inferred through validated remote sensing proxies. The signal excludes oxygen bound within biological tissues, [https://en.wikipedia.org/wiki/Particulates particulate matter], or chemically combined forms not freely dissolved. Measurements are confined to marine environments and do not include freshwater or terrestrial oxygen concentrations. Temporal boundaries focus on frequent sampling intervals sufficient to resolve short-term variability but exclude instantaneous or single-point measurements lacking temporal context.