The global atmospheric warming and circulation pattern is high precipitation in the tropics that is produced by high evaporation rates and subsequent concentration of water vapor in ascending air masses. Energy from the sun heats the earth but unfortunately does not distribute it evenly over the earth's surface. The tropics receive more heat radiation than they produce, the Arctic or the polar region produce more radiation than they receive. The clouds thus formed produce the heavy precipitation typical of the tropics. The high precipitation mechanism in temperate latitudes occurs when warm, moisture-rich subtropical air meets cold polar air, which forces condensation of water vapor in the subtropical air mass. Precipitation mostly has to do with air temperature. The higher the air temperature, the more moisture it can hold and vice versa. Because the tropics are warmer, the air holds more moisture and does not lose it until it interacts with colder air, which is usually found in the mountains as the cold air is pushed towards the warm air by the warm air. ...