Astrocast

Why do we have weather?
Thermal gradients are the main key. The difference in tempurature and dense pressure around the globe as well as humidity causes conflicting winds causing weather. The sun determines these thermal gradients, causing certain parts of the Earth to be warmer was well as have seasons as we relolve around it. The jet stream is located between the poles and the subtropics, which is where weather, like hurricanes, are generated. Why doesn't snow melt even if its above freezing temperature? The snow keeps the land below it cold as well as the air above it, making it hard to get snow to melt away quickly. Even different foliage, such as new farms can have an effect on local weather. Though we know the Earths alignment to the sun almost exactly and how the sun effects us, it is impossible to correctly predict the weather far into the future. Little changes in wind, or tempurature can cause tropic storms.The sun and moon control the weather and tides of the Earth.