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Cloud Atlas ->
Stratus Stratus (St)
Description:
Evenly grey, low
layer cloud, which causes fog or fine
precipitation and is sometimes frazzled.
Origin:
-
By cooling of the lower air
layers, in particular by thermal radiation at the upper limit of
deep-seated inversions (low Stratus).
-
By turbulence in the
near-surface air layer, if it is enriched by precipitation with humidity
(pannus forms).
-
From other clouds: From
Stratocumulus, whose bottom side drops; from fog.
Possible cloud
species, subspecies and special forms:
|
species |
|
name |
shortcut |
meaning |
|
Stratus nebulosus |
St neb |
Nebular, rather
monotonous and grey layer cloud. |
|
Stratus fractus |
St fra |
Into several parts
of different size and brightness layer, which
changes its form rapidly. |
|
subspecies |
|
name |
shortcut |
meaning |
|
Stratus undulatus |
St un |
wavelike |
|
Stratus translucidus |
St tr |
Thinly, more
veil-like; Outlines of sun or moon clearly
recognizably. |
|
Stratus opacus |
St op |
Closely, sun or
moon completely covered. |
|
special forms |
|
name |
shortcut |
meaning |
|
Stratus praecipitatio |
St pra |
With precipitation
in the form of drizzles, snow grains or ice
prisms. |
photos of Stratus:
 |
 |
 |
 |
|
Stratus nebulosus |
Stratus nebulosus |
Stratus
fractus |
Stratus
fractus |
other Stratus
clouds: [1][2] |
