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Atmosphere
Finally we add the atmosphere: clouds, storms, and even smog! When
we look at Earth from space, we usually see lots of clouds. Rain
and snow are often falling underneath the clouds, but you need radar
to see them.
Some places on Earth,
like the poles and the Equator, are almost always covered by clouds.
If you look at the globe, you can see the line of clouds across
the middle that closely follows the equator. Today there are also
clouds over the jungles of Brazil, and lines of clouds along the
leading edges of storms can be seen in the north and south Pacific
and over North America. Other places, like the deserts in the American
Southwest, are almost cloud-free.
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