Weather Dynamics Introduction

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Weather DynamicsIntroduction
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Think about this.

1. Why are five-day weather forecasts often wrong?
2. Why do you think the weather is warm in summer
   and cold in winter?
3. Why do you think scientists predict that climate
   changes will lead to more severe weather?

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What is weather?

• Weather is a result of what happens to the suns
  energy when it enters the atmosphere
• Weather is the physical conditions (or
  properties) of the atmosphere at any given time
  and location
• These conditions include
• Precipitation
• Temperature
• Humidity
• Wind speed and direction
• Sky cover
• Atmospheric Pressure

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Physical Conditions

• Temperature how warm or cold something is
• Precipitation water in a liquid or solid state
  that falls to earth from the atmosphere
• Atmospheric Pressure the force of the atmosphere
  on the earths surface.

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Physical Conditions

• Sky Cover The portion of the sky that is covered
  by clouds
• Humidity The amount of water vapour in the
  atmosphere
• Wind Speed and Direction how fast the air is
  moving and in what direction it comes from