空气在大气中有摩擦,由于地球的旋转?

Question

大气中的空气遭受摩擦只在某种程度上由于地球自转?

Answer 1

简短的回答是肯定的。

当流体移动与其他经验摩擦,这是一个流体动力学的函数。

大气是一种弱粘性流体,但摩擦是很重要的无论速度梯度很大。摩擦效应因此强大至少在地球表面的一层。这一层被称为边界层。

摩擦大气中经历的数量取决于地球的粗糙度。在平坦的地形,将经验不如在崎岖的地形,如摩擦山脉,森林或高层建筑。

的行星边界层(PBL)或大气边界层的大气与地球表面的接触。

由于表面摩擦,在上面的PBL通常低于风,吹向低压领域。

Answer 2

因为你说“仅仅由于地球自转”,最好的答案可能是“不”。的大气rotates as a body with the planet. The interplanetary medium is so diffuse there is essentially no friction between it and the atmosphere. Whenever there is a pressure difference between one location on the earth's surface and another nearby place, there is a force tending to cause wind from the higher pressure to the lower pressure location, and a friction force resisting that. But the planet's rotation does not apply any sideways force on the atmosphere, since the atmosphere is already rotating too. So there is no force for friction to resist, and therefore no friction caused solely by the earth's rotation.