Clouds PSP Wallpaper

Here is a nice clouds wallpaper for your download. I hope you enjoy these free PSP wallpapers. Here is some info on clouds.

Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals. This can happen in three ways:

1. The air is cooled below its saturation point. This happens when the air comes in contact with a cold surface or a surface that is cooling by radiation, or the air is cooled by adiabatic expansion (rising). This can happen:

along warm and cold fronts (frontal lift)
where air flows up the side of a mountain and cools as it rises higher into the atmosphere (orographic lift)
by the convection caused by the warming of a surface by insolation (diurnal heating)
when warm air blows over a colder surface such as a cool body of water.
2. Clouds can be formed when two air masses below saturation point mix. Examples are breath on a cold day, aircraft contrails and Arctic sea smoke.

3. The air stays the same temperature but absorbs more water vapor into it until it reaches saturation.
from Wikipedia.