Wind is a fascinating weather phenomenon. It is a variable constantly trying to find a perfect balance on a planetary scale. Wind only exists because there are differences in air pressure between two or more points. It's like a balloon - if you squeeze it, the air moves or circulates from high to low pressure. If Earth were perfectly flat and smooth, wind would be nearly nonexistent. The sun would heat up the planet almost uniformly, and the global temperature differences would be residual. However, due to the presence of multiple surfaces (water and land), elevations (mountains, buildings, etc.) and depressions, and numerous organic materials (grass, soil, sand, rock, etc.), solar heating's interaction with the Earth is randomly dispersed. Some zones will be warmer than others. Thus, columns of air will rise asymmetrically across the globe. If you stick a needle through a balloon, the highly compressed air inside will quickly move toward the area with less pressure. ...