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气候对地球没有轴向倾斜

的前提

地球绕着自己的轴自转,倾斜约23度。我想象的情况下这样的一个轴倾角不存在。

从一般的阅读,似乎最大的消除轴倾角会影响季节性变化在某种意义上,不会有任何变化。每个纬度带自己一年四季季节,与一些最小的变化取决于地球离太阳的距离在其轨道上(包括基本上相比,从1月份的9140万英里到9150万英里——7月小于1%)。

这个问题

的含义是什么雨周期如果地球没有轴向倾斜?在我看来,雨水携带云搬到风吹到一个区域的规定有不同的空气压力。如果我们的地球没有轴向倾斜,赤道会一年四季极热,导致水蒸发和北或南转向寒冷地区——至少这是我的理解。

地球将获得哪些部分最降雨如果发生这样的变化?

回答

只是把一些人认为在这个问题上,我很容易理解,有一个大泵把大量的水从一个磁极相反的一年,在北半球夏季的北极的冰融化和混合大海;同时水开始沉淀越来越多的南极洲,冰雪堆积。在泵恢复,其他六个月流水从南极到北极。在这个假设的情况下该泵的行为会有所不同。从大海的水会蒸发,加速向两极。雨在中途杆将提供植被生活,侵蚀,所有的雨水。水在北极和南极就没有原因,原则上,融化和重新插入在海洋中。如果雨开始下跌主要在高纬度地区,赤道周围的地区可能会更多的暴露和逃兵,增加热量,蒸发,空气的对流速度高。可能非常强烈的风吹来,云快速移动,蒸汽高纬度地区,会下雨。总之,大气温度应该增加的损失较轻的气体空间由于动能增加,减少了大气压力渐渐地变成热。 In this loss there could be even some water vapor. Then I think that in the long run the water would tend to move all the way to the poles draining drastically the remaining of the planet. If we think of an ocean as salty (3.5%) as ours, possibly there would be deposition of large layers of salt, most of it sodium chloride. I don't really know if there would be a "life zone" around some high latitude. Certainly tropic would have no meaning in this configuration. That is the "big picture", but not all the story. We have different wind flow in atmosphere and water flow in the oceans due to others factors. One of those being the tides that move water in waves half circumference of the planet. The main component being that from the moon, but we have other of smaller intensities like the solar influence. Other factors are the convection due difference temperatures and pressures, and Coriolis force making it go round in its trip across latitudes. Another factor is that we have a non homogeneous distribution of mass on planet surface, the removal of large amount of water, moved to the poles, possibly would increase the amount of wobbling, then the precession ( https://en.wikipedia.org/wiki/Axial_precession) of the planet. Perhaps this wobbling would be responsible to a certain amount of melting at the poles, keeping the pumping working longer and, who knows, preserving some life in the planet. A hotter atmosphere could increase the amount of clouds, if it covers all the planet we could have a very long freezing of the planet. If we think on a dry planet with water moved to poles as ice, we could perhaps include sublimation of ice in the figure, adding the loss of water to space due to heating of the atmosphere. I don't think we would become a Mars, our gravity is about three times Mar's gravity. HTH

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