authority: gcos
slug: soil-moisture
name: Soil Moisture
domain: land
subdomain: hydrosphere
authority_id: gcos:soil-moisture
external_ids:
  nvs_uri: null
  cf_standard_name: moisture_content_of_soil_layer
  iadopt_concepts:
    property: water-content
    entity: soil
canonical_units: m3 m-3
gcos_requirement_tier:
  threshold: null
  breakthrough: null
  goal: null
description: |
  Volumetric water content of the surface and root-zone soil from L-band
  radiometry (SMOS, SMAP), C-band scatterometry/SAR (ASCAT, Sentinel-1)
  and ISMN in-situ networks. Controls evapotranspiration and drought.
theme: soil
demos:
  - id: "@folia/demos/soil-moisture-calval"
    version: "0.1"
    path: "demos/soil-moisture-calval/folia.yaml"
    fulfills: ["greqs:rs-calval"]
    networks: ["USCRN", "ISMN-REMEDHUS"]
    satellite: "@nasa/nasa-smap-spl3smp-e-005"
status: documented
sources:
  - https://gcos.wmo.int/site/global-climate-observing-system-gcos/essential-climate-variables/soil-moisture