The Study of the Atmosphere By: Meghan Kohut

WEATHERCLIMATE  Weather is over a short period of time.  Constantly changing.  Weather occurs due to density (temperature and moisture) differences between one place to another.  Refers to current activity.  Climate is over a long period of time.  Generalized, composite of weather.  Climate includes the temp, humidity, rainfall, atmospheric particle count and other factors in a given region over long periods of time. “Climate is what you expect and Weather is what you get”

CIRRUS STRATUS  High  White  Thin  High  White  Thin  Sheets or layers that cover much of the sky CUMULUS  Globular cloud masses often associated with fair weather.

 Features  Cumulonimbus Clouds  Heavy Rainfall  Lightening  Occasional Hail  100,000 per year in the U.S.  Thunderstorms Require:  Warm air  Moist air  Instability (lifting)  High surface Temperature  Most common in the afternoon and early evening

 Features  Violent windstorm  Rotating column of air that extends down from a cumulonimbus clouds  Low pressure causes air to rush into the tornado  Winds approach 480 km per hour  Occurrence and Developments  Average of 1200 each year in the U.S.  Most frequent from April through June  Exact cause of tornadoes is unknown  Occur most often along a cold front  During the spring  Associated with huge thunderstorms called super cells  Most move toward the Northeast

 Features  Most violent storms on Earth  To be a hurricane : wind speed in excess of 119 km per hour and rotary cyclonic circulation  Form between the latitudes of 5 degrees and 20 degrees  North Pacific has the greatest number per year  Wind speeds can reach 300 km/hr  Can generate 50 foot waves at sea  Formation and Decay  Form in all tropical waters except the: South Atlantic and Eastern South Pacific  Develop most often in late summer when warm water temperatures provide energy and moisture  Initial stage is not well understood:  Tropical Depression ( winds do not exceed 61 km per hour)  Tropical Storm (winds between km per hour)  Diminish to intensity whenever:  They move to cooler ocean water  Move onto land

 "Climate." Wikipedia, The Free Encyclopedia. 20 Nov 2008, 22:05 UTC. 22 Nov Climate&oldid=  "Weather." Wikipedia, The Free Encyclopedia. 21 Nov 2008, 11:23 UTC. 22 Nov Weather&oldid=  Tarbuck, Edward J. and Frederick K. Lutgens. Earth Science Twelfth Edition. New Jersey. Pearson Education Inc,. 2006