WMO OSCAR | Details for Variable: Snow water equivalent

Variable: Snow water equivalent

Definition

Full name	Snow water equivalent
Definition	Vertical depth of the water that would be obtained by melting a snow layer. Linked to snow depth through the density of the snow layer.
Measuring Units	mm	Uncertainty Units	mm
Horizontal Res Units	km	Vertical Res Units
Stability Units	mm (Stability /decade)

Comment:
Last modified:	2011-07-05
Applied in OSCAR/Space Gap Analysis:	Yes

Classification

Domain: Terrestrial
- Sub-domain: Land surface
  - Variable: Snow water equivalent
    - Measured in Layers:
      - Land surface

Cross-cutting themes:
- Cryosphere

Earth System Application Categories and its related Application Areas:
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
- 2. Atmospheric Applications
Unknown:

Requirements defined for Snow water equivalent (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	Stability / decade	Hor Res	Obs Cyc	Timeliness	Coverage	Conf Level	Val Date	Source	General Comment
13	Snow water equivalent	Land surface	CLIC (deprecated)	5 mm 8 mm 20 mm		10 km 13.6 km 25 km	24 h 41 h 5 d	7 d 11 d 30 d	Global land	tentative	1998-10-29	WCRP
48	Snow water equivalent	Land surface	2.9 Agricultural Meteorology	5 mm 23.2 mm 500 mm		30 km 2.2 km 10 km	7 d 11 d 30 d	24 h 46 h 7 d	Global land	reasonable	2003-10-20	ET ODRRGOS	Evaluation of soil water storage in spring
109	Snow water equivalent	Land surface	Climate-AOPC (deprecated)	5 mm 6.5 mm 10 mm		100 km 200 km 500 km	24 h 2 d 7 d	6 h 12 h 24 h	Global land	firm	2007-07-19	AOPC
221	Snow water equivalent	Land surface	GEWEX (deprecated)	5 mm 10 mm 20 mm		15 km 50 km 250 km	12 h 24 h 7 d	30 d 45 d 90 d	Global land	tentative	1998-10-29	WCRP
300	Snow water equivalent	Land surface	2.1 Global Numerical Weather Prediction and Real-time Monitoring	2 mm 10 mm 20 mm		5 km 15 km 100 km	3 h 24 h 5 d	3 h 24 h 5 d	Global land	reasonable	2009-02-10	John Eyre
376	Snow water equivalent	Land surface	2.2 High-Resolution Numerical Weather Prediction	5 mm 8 mm 20 mm		0.5 km 2 km 20 km	60 min 3 h 6 h	60 min 3 h 24 h	Global land	tentative	2010-02-01	JF Mahfouf
758	Snow water equivalent		2.4 Sub-Seasonal to Longer Predictions	5 mm 10 mm 20 mm		50 km 100 km 500 km	24 h 2 d 7 d	24 h 2 d 7 d	Global land	tentative	2009-01-19	Laura Ferranti
825	Snow water equivalent	Land surface	2.5 Atmospheric Climate Monitoring	10 mm	10 mm	1 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.