Re: [轉錄][請益] 幾題自然與生活科技的問題
可以幫解釋一下嗎 謝謝 我想我可以好好跟學生說明風了 ：）
摘自維基百科
http://en.wikipedia.org/wiki/Wind
裡面有提到風的定義
但有很多關鍵字：Geostrophic wind , Thermal wind , Gradient wind
Winds defined by an equilibrium of physical forces are used in the decompositi
on and analysis of wind profiles.
They are useful for simplifying the atmospheric equations of motion and for making qualitative arguments about the horizon
tal and vertical distribution of winds.
The geostrophic wind component is the result of the balance between Coriolis force and pressure gradient force. It f
lows parallel to isobars and approximates the flow above the atmospheric bound
ary layer in the midlatitudes.
The thermal wind is the difference in the geostrophic wind between two levels in the atmosphere. It exists only in an atm
osphere with horizontal temperature gradients.
The ageostrophic wind component is the difference between actual and geostrophic wind, which is responsib
le for air "filling up" cyclones over time.
The gradient wind is similar to the geostrophic wind but also includes centrifugal force (or centripetal acc
eleration).
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推
06/20 10:34, , 1F
06/20 10:34, 1F
→
06/20 10:35, , 2F
06/20 10:35, 2F
→
06/20 10:35, , 3F
06/20 10:35, 3F
→
06/20 10:36, , 4F
06/20 10:36, 4F
→
06/20 10:36, , 5F
06/20 10:36, 5F
→
06/20 10:36, , 6F
06/20 10:36, 6F
→
06/20 10:37, , 7F
06/20 10:37, 7F
→
06/20 10:37, , 8F
06/20 10:37, 8F
推
06/20 10:40, , 9F
06/20 10:40, 9F
→
06/20 10:40, , 10F
06/20 10:40, 10F
→
06/20 10:41, , 11F
06/20 10:41, 11F
→
06/20 10:42, , 12F
06/20 10:42, 12F
→
06/20 10:42, , 13F
06/20 10:42, 13F
→
06/20 10:52, , 14F
06/20 10:52, 14F
→
06/20 10:52, , 15F
06/20 10:52, 15F
→
06/20 10:58, , 16F
06/20 10:58, 16F
→
07/28 12:51, , 17F
07/28 12:51, 17F
→
11/11 17:11, , 18F
11/11 17:11, 18F
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