storminess

An increase of storminess seems to be the key to the whole situation.

With the change in storminess there naturally goes a change in rainfall.

Not all parts of the world, however, have increased storminess and more abundant rainfall when sunspots are numerous.

The net result is that when sunspots are numerous the earth's storminess increases, and the atmosphere is thrown into commotion.

As a matter of fact the storminess is notably greatest when the edges of the solar disk are most disturbed.