Presentation3
- 1. Clouds
- 2. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Clouds Clouds consist of water droplets, ice crystals, or both Condensation nucleus : a tiny bit of solid matter (aerosol) in the atmosphere, on which water vapor condenses to form a tiny water droplet
- 3. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Clouds Cloud Families: High clouds, middle clouds, low clouds, clouds of vertical development
- 4. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Cumulus Clouds Cumuliform clouds: globular masses of cloud, associated with parcels of rising air Clouds
- 5. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Clouds Image ID: wea02050, NOAA's National Weather Service (NWS) Collection Photographer: Ralph F. Kresge http://www.photolib.noaa.gov/htmls/wea02050.htm Stratus Clouds Stratiform clouds: blanket-like, cover large areas
- 6. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Cirrus Clouds Cirrus clouds: high, thin, wispy clouds composed of ice crystals Clouds
- 7. Visualizing Physical Geography Copyright © 2008 John Wiley and Sons Publishers Inc. Clouds Image ID: wea03250, NOAA's National Weather Service (NWS) Collection Photographer: LCDR Mark Wetzler, NOAA Corps http://www.photolib.noaa.gov/htmls/wea03250.htm Radiation fog : formed when temperature of the air at ground level falls below dew point Advection fog : forms when warm moist air moves over a cold surface Common over oceans (“sea fog”) Fog is a cloud layer at or close to Earth’s surface