DECATUR, Ill. (WAND) - Wind comes from differences in atmospheric pressure. The greater the change in atmospheric pressure, the greater the wind. So, the question now becomes, what makes the atmospheric pressure change? Â
There are actually several factors that change pressure. In no particular order:Â
Altitude: As altitude increases, atmospheric pressure decreases because the density of air molecules decreases with height.
Temperature: Warm air is less dense and tends to rise, leading to lower pressure at the surface. Conversely, cold air is denser and can increase pressure near the surface.
Weather Systems: High-pressure systems (anticyclones) are associated with sinking air and fair weather, while low-pressure systems (cyclones) involve rising air and often bring storms and precipitation.
Humidity: Increased moisture content in the air decreases its overall density, which can lead to a reduction in atmospheric pressure.
Local Conditions: Factors like mountains, temperature inversions and local heating can also cause fluctuations in atmospheric pressure.
So, if your trash can is tipped over Friday, it's due to several factors.
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