IEVref:
845-09-90
ID:
Language:
en
Status:
Obsolete
Term:
CIE standard overcast sky
Synonym1:
Synonym2:
Synonym3:
Symbol:
Definition:
completely overcast sky for which the ratio of its luminance
L
γ
in the direction at an angle
γ
above the horizon to its luminance
L
z
at the zenith is given by the relation
L
γ
=
L
z
(1 + 2 sin
γ
)/3
Publication
date
:
1987
Source
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5:
completely overcast sky for which the ratio of its luminance
L
γ
in the direction at an angle
γ
above the horizon to its luminance
L
z
at the zenith is given by the relation
L
γ
=
L
z
(1 + 2 sin
γ
)/3