EC: HOAR_FROST
Status:
STD 2005/06/07
Code:
527
Concept definition:
A deposit of <
ICE
> (hoar crystals) that generally assumes the form of scales, needles, feathers, or fans and that forms on <
OBJECT
>s the <
SURFACE
>s of which are sufficiently cooled, usually by nocturnal radiation, to bring about deposition of the water vapour contained in the ambient <
AIR
>; hoar frost.
Reference type:
PR
Reference:
[
WMO182
, H0630, "hoar frost"]
Supplemental references:
Group membership:
ICE
MATERIAL
SURFACE_MATERIAL
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