BackForward Variable: Snow cover

Definition
Full name Snow cover
Definition Fraction of a given area which is covered by snow
Measuring Units % Uncertainty Units %
Horizontal Res Units km Vertical Res Units
Stability Units % (Stability /decade)

 

Comment:
Last modified: 2014-12-18
Applied in OSCAR/Space Gap Analysis: Yes
Classification
  • Domain: Terrestrial
    • Sub-domain: Land surface
      • Variable: Snow cover
        • Measured in Layers:
          • Land surface

Requirements defined for Snow cover  (9)

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 ATP Uncertainty Layer/s Quality Coverage Quality Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source General Comment Application Area Comment Horizontal Coverage Comment Observation Comment Performance Comment
12 Snow cover Land surface CLIC (deprecated) 10 %
13 %
20 % 		1 km
2.9 km
25 km 		24 h
41 h
5 d 		7 d
11 d
30 d 		Global land reasonable 1998-10-29 WCRP
47 Snow cover Land surface 2.9 Agricultural Meteorology 2 %
4 %
10 % 		1 km
2.2 km
10 km 		5 d
6 d
7 d 		24 h
44 h
6 d 		Global land reasonable 2003-10-20 ET ODRRGOS Evaluation of crop wintering
108 Snow cover Land surface Climate-AOPC (deprecated) 10 %
13 %
20 % 		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 For model assimilation. Decadal changes may be of order 5% (N. Nicholls et al. 1996 Observed Climate Variability and Change. Chapter 2 of Climate Change 1995 (IPCC Second Assessment).)
220 Snow cover Land surface GEWEX (deprecated) 10 %
20 %
50 % 		15 km
50 km
250 km 		24 h
2 d
7 d 		30 d
45 d
90 d 		Global land reasonable 1998-10-29 WCRP
299 Snow cover Land surface 2.1 Global Numerical Weather Prediction and Real-time Monitoring 10 %
20 %
50 % 		5 km
15 km
100 km 		3 h
24 h
5 d 		3 h
24 h
5 d 		Global land firm 2009-02-10 John Eyre
375 Snow cover Land surface 2.2 High-Resolution Numerical Weather Prediction 5 %
15 %
20 % 		1 km
5 km
20 km 		60 min
3 h
12 h 		60 min
3 h
12 h 		Global land reasonable 2010-02-01 JF Mahfouf
446 Snow cover Land surface 2.3 Nowcasting / Very Short-Range Forecasting 10 %
13 %
20 % 		5 km
10 km
50 km 		60 min
6 h
24 h 		60 min
2 h
6 h 		Global land reasonable 2013-04-03 P. Ambrosetti
677 Snow cover Land surface Climate-TOPC (deprecated) 5 %
7 %
10 % 		0.1 km
0.45 km
10 km 		24 h
3 d
30 d 		30 h
3 d
15 d 		Global land firm 2007-07-19 TOPC For impact and hydrological cycle studies. Snow cover area
824 Snow cover Land surface 2.5 Atmospheric Climate Monitoring 5 % 4 % 0.1 km
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.