Causes of sunsdog The most common nebulosity occurs on either side of the Sun, with an angle of 22° centered on the observer between the Sun and the nebulosity. When the Sun is on the horizon, the angle is 22°, but as the Sun’s elevation angle increases to 60°, the angle between the Sun and …
The aurora borealis is a glowing phenomenon caused by charged particles entering the Earth from space and colliding with gases in the upper atmosphere. Charged particles (mainly electrons) falling into the atmosphere along the Earth’s magnetic lines of force collide with atoms or molecules in the atmosphere, causing them to become excited, and the excited …
Overview A mesocyclone is a powerful vortex column (usually appearing as a funnel cloud) that arises from the surface of the water. Some occur with cumulus congestus clouds, some with cumulonimbus clouds, and some with cumulonimbus clouds. They are generally tornadoes, not supercell thunderstorms, which occur at the surface. They are usually weaker than tornadoes …