Editing Soil moisture (volumetric) (section)

== Boundary Conditions ==
Boundary inclusions for this signal encompass all soil moisture contained within the root zone and near-surface soil layers that influence land-atmosphere interactions. It includes moisture in various soil textures and organic matter compositions across terrestrial ecosystems. Boundary exclusions involve soil water beyond the root zone depth that does not directly affect surface processes, as well as moisture contained in frozen or permafrost soils where liquid water content is negligible. Additionally, soil moisture in urban impervious surfaces and water bodies is excluded to maintain focus on terrestrial soil systems.