Environmental Engineering Reference
In-Depth Information
Table 1 Cloud genera
Cloud type
Abbreviation
Height level
Cloud base (m)
Tropical
Temperate
Polar
Stratiform (layered)
Cirrus
Ci
Cirrostratus
Cs
High
6000-
18,000
5000-
13,000
3000-
8000
Cirrocumulus
Cc
Altostratus
As
Medium
2000-
8000
2000-
7000
2000-
4000
Altocumulus
Ac
Stratus
St
Stratocumulus
Sc
Low
Ground
to 2000
Ground
to 2000
Ground
to 2000
Nimbostratus
Nb
Cumuliform (vertical development)
Cumulus
Cu
Variable
Variable
Variable
Variable
Cumulonimbus
Cb
