最終更新日：2025/11/21
(meteorology) According to the World Meteorological Organization, a mid-level, principal cloud type, generally formless and dark grey in colour, which forms from altostratus occurring in layers at the middle altitude of the troposphere (usually above 2400 metres). Nimbostratus usually brings precipitation as the mid-level clouds thicken and subside into the low level of the troposphere. Frontal or cyclonic lift can also carry the top of a deep nimbostratus layer into the high levels of the troposphere. Also classified or characterized as multi-level; abbreviated Ns.
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nimbostratus
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nimbostratus
名詞
(meteorology)
According
to
the
World
Meteorological
Organization,
a
mid-level,
principal
cloud
type,
generally
formless
and
dark
grey
in
colour,
which
forms
from
altostratus
occurring
in
layers
at
the
middle
altitude
of
the
troposphere
(usually
above
2400
metres).
Nimbostratus
usually
brings
precipitation
as
the
mid-level
clouds
thicken
and
subside
into
the
low
level
of
the
troposphere.
Frontal
or
cyclonic
lift
can
also
carry
the
top
of
a
deep
nimbostratus
layer
into
the
high
levels
of
the
troposphere.
Also
classified
or
characterized
as
multi-level;
abbreviated
Ns.
日本語の意味
（気象学）中層に位置する主要な雲の一種で、形が不明瞭で暗灰色を呈し、通常は積乱雲から形成され、降水をもたらす層状の雲。
意味（1）
(meteorology)
According
to
the
World
Meteorological
Organization,
a
mid-level,
principal
cloud
type,
generally
formless
and
dark
grey
in
colour,
which
forms
from
altostratus
occurring
in
layers
at
the
middle
altitude
of
the
troposphere
(usually
above
2400
metres).
Nimbostratus
usually
brings
precipitation
as
the
mid-level
clouds
thicken
and
subside
into
the
low
level
of
the
troposphere.
Frontal
or
cyclonic
lift
can
also
carry
the
top
of
a
deep
nimbostratus
layer
into
the
high
levels
of
the
troposphere.
Also
classified
or
characterized
as
multi-level;
abbreviated
Ns.
（ plural ）
