Editing Ocean Heat Content (0–2000m) (Global) (section)

== Monitoring and Measurement ==
Ocean heat content is monitored through a combination of in situ observations and remote sensing technologies. The primary data sources include autonomous profiling floats, such as those deployed by the Argo program, which measure temperature and salinity profiles down to 2000 meters depth. Ship-based hydrographic surveys and moored instruments provide complementary measurements. Satellite observations contribute surface temperature data and support model assimilation. These datasets are integrated to estimate global ocean heat content on monthly timescales using standardized oceanographic methods and quality control protocols. Scientific institutions such as [https://en.wikipedia.org/wiki/National_Oceanic_and_Atmospheric_Administration NOAA], [https://en.wikipedia.org/wiki/National_Aeronautics_and_Space_Administration NASA], and international programs coordinate monitoring efforts.

Within the SIGNAL system, this phenomenon is treated as a defined environmental signal whose boundaries and measurement conventions are described below.