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Weather BellRinger. Old wise tail says, “My bones are aching, so it’s about to rain.” What would you say could make this true, what type of system which effect the weather?. Atmosphere and Weather. Composition and Layers of the Atmosphere. Review. Fronts
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Weather BellRinger • Old wise tail says, “My bones are aching, so it’s about to rain.” • What would you say could make this true, what type of system which effect the weather?
Atmosphere and Weather Composition and Layers of the Atmosphere
Review • Fronts http://glencoe.mcgraw-hill.com/olcweb/cgi/pluginpop.cgi?it=swf::430::356::/sites/dl/free/0078617871/164155/515_Fig_11.swf::Fronts Note carefully what is taking place
Review • Storm safety • Hurricanes • http://oceanexplorer.noaa.gov/edu/learning/player/lesson14.html • http://oceantoday.noaa.gov/hurricanehunters/ • Homework sheet of storm labeling
Defining Winds • High pressure systems try to fill and balance with a low pressure system, creating winds. • Model pressure difference with balloon rocket. • More dense cool air and less dense warm air also contributes to winds. • Uneven heating of Earth’s surface causes a difference in temperature causing winds and a rotation of winds known as convection. • http://www.youtube.com/watch?v=7xWWowXtuvA
Winds measured • Direction • Velocity • Beaufort Wind Scale (handout)
Heating of the Atmosphere • Heat transfer from the sun rays contacting Earth’s surface, water, and other items creates uneven heating. • Heat is transferred into the Earth’s atmosphere by radiation, conduction, and convection.
Winds • Coriolis Effect • The Earth’s rotation causes moving air and water to turn right in the Northern Hemisphere and turn left in the Southern. Affecting other weather systems. (Page 456-457 Book) • Global Winds • These winds are huge systems which carry across the entire globe and have a typical pattern according to the region.
Jetstream • www.srh.noaa.gov/jetstream • A narrow belt of strong winds in the upper troposphere. • In the winter the temperature difference is greater causing the Jetstream to move faster. • Jet airplanes take advantage of the Jetstream, like the ocean stream in “Finding Nemo”.
Current Weather • http://www.wral.com/weather/video/1076424/ • NOTICE what the current conditions are and tell me something you know about them.
Writing Summary • A paragraph each. • List different atmospheric conditions which will change weather. • Different careers within weather forecasting and careers which depend upon the accuracy of forecasts.