Last Updated
：2025/11/21
geostrophic wind
Noun
Japanese Meaning
地衡風：水平な気圧勾配力と地球の自転による力（北半球では左、南半球では右）との釣り合いにより、その方向と速度が決定される風のこと。
Sense（1）
Sense（2）
(meteorology)
That
horizontal
wind
velocity
for
which
the
Coriolis
force
exactly
balances
the
horizontal
pressure
gradient
force.
The
geostrophic
wind
is
thus
directed
along
the
contour
lines
on
a
constant-pressure
surface
(or
along
the
isobars
in
a
geopotential
surface)
with
low
elevations
(or
low
pressure)
to
the
left
in
the
northern
hemisphere
and
to
the
right
in
the
southern
hemisphere.
（ plural ）
Quizzes for review
(meteorology) A wind whose direction and speed are determined by a balance of the horizontal pressure gradient force and the force due to the earth's rotation to the left in the northern hemisphere and to the right in the southern hemisphere.
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geostrophic wind
Meteorologists often model the large-scale geostrophic wind to estimate upper-atmosphere circulation because its direction and speed result from a balance between the horizontal pressure-gradient force and the Coriolis force.
See correct answer
Meteorologists often model the large-scale geostrophic wind to estimate upper-atmosphere circulation because its direction and speed result from a balance between the horizontal pressure-gradient force and the Coriolis force.
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