BackForward Variable: Air specific humidity (near surface)

Definition
Full name Air specific humidity (near surface)
Definition Air specific humidity  at a known height  above surface, with the height specified in the metadata. Specific  humidity is the ratio of the mass of water vapour and the mass of moist air.
Measuring Units g/kg Uncertainty Units %
Horizontal Res Units km Vertical Res Units
Stability Units % (Stability /decade)

 

Comment:
Last modified: 2019-10-15
Applied in OSCAR/Space Gap Analysis: No
Classification
  • Domain: Atmosphere
    • Sub-domain: Basic atmospheric
      • Variable: Air specific humidity (near surface)
        • Measured in Layers:
          • Near Surface
  • Cross-cutting themes:

Requirements defined for Air specific humidity (near surface)  (7)

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 and threshold orange

Id Variable Layer App Area Uncertainty Stability / decade Hor Res Ver Res Obs Cyc Timeliness Coverage Conf Level Val Date Source
489 Air specific humidity (near surface) Near Surface Ocean Applications 0.5 %
1 %
3 % 		1 km
5 km
25 km 		30 min
60 min
3 h 		30 min
60 min
6 h 		Global ocean firm 2011-03-07 JCOMM (Ali Mafimbo)
722 Air specific humidity (near surface) Near Surface Aeronautical Meteorology 1 %
2 %
5 % 		30 min
60 min
2 h 		5 min
10 min
30 min 		Point firm 2014-03-27 J van der Meulen
252 Air specific humidity (near surface) Near Surface Global NWP 2 %
5 %
10 % 		15 km
50 km
250 km 		60 min
3 h
12 h 		6 min
30 min
6 h 		Global reasonable 2009-02-10 John Eyre
337 Air specific humidity (near surface) Near Surface High Res NWP 2 %
5 %
10 % 		1 km
5 km
20 km 		10 min
30 min
2 h 		10 min
30 min
2 h 		Global reasonable 2019-12-04 JF Mahfouf
1 Air specific humidity (near surface) Near Surface CLIC (deprecated) 10 %
12 %
20 % 		100 km
200 km
500 km 		12 h
18 h
24 h 		24 h
36 h
2 d 		Global tentative 1998-10-29 WCRP
69 Air specific humidity (near surface) Near Surface Climate-AOPC (deprecated) 1 %
1.3 %
2 % 		25 km
50 km
100 km 		3 h
4 h
6 h 		24 h
2 d
3 d 		Global speculative 2007-07-19 AOPC