The summer sky, the cloudiness is always less, even often clear sky weather
Winter Sky, cloud cover is always more, the weather is full of clouds, is often the thing
Seasonal alternating, often accompanied by rain, especially spring summer, or autumn winter stage,
Warm and cold front meet, change the local weather, climate, temperature, rain and stormy
The seasons in the northern and southern hemisphere are reversed, presumably due to the fact that the northern hemisphere is in winter with more cloudiness than the southern hemisphere.
When the Northern hemisphere is in summer, its cloudiness is less than that of the southern hemisphere
It is speculated that the cloud cover of the Earth's air layer is a dynamic stable amount
Dynamic, because the Earth every year there are always alternating seasons, from the local observation, every day, every season the sky cloud cover is changed
And from the overall point of view of the Earth, what will be the cloud cover, which may require the use of satellites and other astronomical instruments
Temporary inspiration, wind horse a family grinding test for a long time, so it published on the website
Whether the cloud cover of the sky is dynamic and stable