WMO OSCAR | Details for Variable: Soil moisture at surface

Variable: Soil moisture at surface

Definition

Full name	Soil moisture at surface
Definition	Fractional content of water in a volume of wet soil. Surface layer (upper few centimetres)
Measuring Units	m³ /m³	Uncertainty Units	m³ /m³
Horizontal Res Units	km	Vertical Res Units
Stability Units	m^3 /m^3 (Stability /decade)

Comment:
Last modified:
Applied in OSCAR/Space Gap Analysis:	Yes

Classification

Domain: Terrestrial
- Sub-domain: Land surface
  - Variable: Soil moisture at surface
    - Measured in Layers:
      - Land surface

Cross-cutting themes:

Earth System Application Categories and its related Application Areas:
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
Unknown:
- GEWEX (deprecated)
- Climate-TOPC (deprecated)

Requirements defined for Soil moisture at surface (8)

This tables shows all related requirements. For more operations/filtering, please consult the full list of Requirements
Note: In reading the values, goal is marked blue, breakthrough green, threshold orange
Application-dependent Technical Priority (ATP) Magenta and Relative priority of the attributes Red

Id	Variable	Layer	App Area	Uncertainty	Hor Res	Obs Cyc	Timeliness	Coverage	Conf Level	Val Date	Source	General Comment
49	Soil moisture at surface	Land surface	2.9 Agricultural Meteorology	0.01 m³ /m³ 0.017 m³ /m³ 0.05 m³ /m³	0.1 km 0.215 km 1 km	24 h 46 h 7 d	24 h 41 h 5 d	Global land	reasonable	2003-10-20	ET ODRRGOS	Crop state and productivity estimation
222	Soil moisture at surface	Land surface	GEWEX (deprecated)	0.01 m³ /m³ 0.02 m³ /m³ 0.05 m³ /m³	15 km 50 km 250 km	24 h 3 d 10 d	10 d 15 d 30 d	Global land	tentative	1998-10-29	WCRP
301	Soil moisture at surface	Land surface	2.1 Global Numerical Weather Prediction and Real-time Monitoring	0.02 m³ /m³ 0.04 m³ /m³ 0.08 m³ /m³	5 km 15 km 100 km	3 h 24 h 5 d	3 h 24 h 5 d	Global land	reasonable	2013-01-22	Erik Andersson
377	Soil moisture at surface	Land surface	2.2 High-Resolution Numerical Weather Prediction	0.02 m³ /m³ 0.04 m³ /m³ 0.08 m³ /m³	1 km 5 km 40 km	60 min 3 h 6 h	30 min 60 min 6 h	Global land	reasonable	2011-07-29	JF Mahfouf
447	Soil moisture at surface	Land surface	2.3 Nowcasting / Very Short-Range Forecasting	0.01 m³ /m³ 0.02 m³ /m³ 0.05 m³ /m³	5 km 10 km 50 km	60 min 6 h 24 h	60 min 6 h 24 h	Global land	reasonable	2013-04-03	P. Ambrosetti	for forest fire indices calculation
678	Soil moisture at surface	Land surface	Climate-TOPC (deprecated)	0.005 m³ /m³ 0.007 m³ /m³ 0.01 m³ /m³	50 km 60 km 100 km	7 d 11 d 30 d	360 d 1 y 2 y	Global land	speculative	2007-07-19	TOPC
759	Soil moisture at surface		2.4 Sub-Seasonal to Longer Predictions	0.01 m³ /m³ 0.02 m³ /m³ 0.05 m³ /m³	50 km 100 km 500 km	24 h 2 d 7 d	24 h 2 d 7 d	Global land	reasonable	2009-01-19	Laura Ferranti
823	Soil moisture at surface	Land surface	2.5 Atmospheric Climate Monitoring	0.04 m³ /m³	1 km 25 km	24 h		Global	reasonable	2019-09-30	GCOS-200: The Global Observing System for Climate: Implementation Needs (Published 2016)	Requirements in the GCOS-200 IP, Annex A, are only specified at the goal level. Requirements for stability in the GCOS IP are specified in different units than in OSCAR/requirement.