4dmanns

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4dmanns

  1. 1. Dan Manns
  2. 2. Adiabatic temperature changes and expansion and cooling  When temperature changes even though there has been no changes to the heat.  It happens because air gets compressed and is allowed to expand.
  3. 3. Orographic lifting  Orographic lifting is when elevated land, like mountains, act like a barrier to air flow.
  4. 4. Frontal wedging  Frontal wedging is when cooler, denser air acts as a barrier over which the warmer less dense air rises.
  5. 5. Convergence  Convergence is whenever air in the lower atmosphere flows together lifting results.
  6. 6. Localized convective lifting  Pockets of air being warmed more than the surrounding air.
  7. 7. Stability  If a volume of air was forced to rise, its temperature would drop because of expansion.  If this volume of air was cooler than the surrounding environment, it would be denser, and if allowed to do so, it would sink to its original position.
  8. 8. Condensation  When water vapor in the air changes to a liquid.
  9. 9. Types of clouds  Types of clouds are based on their shape and height  Cirrus  Cumulus  Stratus
  10. 10. High clouds  There are three high cloud types:  Cirrus  Cirrostratus  cirrocumulus
  11. 11. Middle clouds  Middle clouds are about 2,000-6,000  All middle clouds have alto before their name.
  12. 12. Low clouds  Stratus clouds are the clouds that usually cover most of the sky. Sometimes they produce precipitation.  Nimbostratus create most of the precipitation.
  13. 13. Clouds of vertical development  Clouds of vertical development have low bases but extend upward.
  14. 14. Fog  Fog is physically the same as a cloud.  Fog is the result of radiation cooling or the movement of air over a cold surface.  Fog is on the ground.
  15. 15. Cold cloud precipitation (Bergeron process)  The Bergeron process relies on supercooling and supersaturation.  Water that is below o degrees Celsius is supercooled.  When air is saturated it is supersaturated.
  16. 16. Warm cloud precipitation  In warm clouds, clouds are formed by the collision-coalescence process.  Some water absorbing particles can remove water vapor from the air when it is not saturated.
  17. 17. Rain and snow  Rain is a drop of water that falls from a cloud and has a diameter of at least 0.5 mm.  When the temperature is low, snow is made up of six sided ice crystals.
  18. 18. Sleet, glaze, and hail  Sleet is particles falling of clear ice.  Glaze happens when raindrops become supercold.  Hail is smalls ice pellets.

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