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Grab a book!

Grab a book! . Do Now. What’s the difference between a cumulus, stratus, and cirrus cloud? What colors represented these clouds on infrared satellite images? Why do you think it is important that we know cloud height? . Announcements . Multiple choice and vocab test next Wednesday

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Grab a book!

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  1. Grab a book!

  2. Do Now What’s the difference between a cumulus, stratus, and cirrus cloud? What colors represented these clouds on infrared satellite images? Why do you think it is important that we know cloud height?

  3. Announcements • Multiple choice and vocab test next Wednesday • Chess Club begins MONDAY Oct 15.  • Students must sign up in the lunchroom on the sheet posted on the back wall, and plan to be in room 519 right at dismissal on Monday, October 15.  • Parents must pick players up at 6:00 in front of the school. • Only the first 20 to sign up may attend

  4. Agenda • Infrared imagery and weather forecasting • Doppler Radar • Cloud article

  5. What is it? • Infrared satellite imagery senses surface and cloud top temperatures by measuring the wavelength of electromagnetic radiation emitted from these objects. This energy is called "infrared". • High clouds, very cold, appear white • Mid-level clouds, somewhat warmer appear light gray. • Low cloud are warmer, appear as a dark shade of gray or black. • Often, low clouds are the same temperature as the surrounding terrain and cannot be distinguished at all.. (National Weather Service)

  6. Infrared satellite imagery • Satellites record long-wave infrared radiation with wavelengths in the atmosphere emitted by cloud tops, land masses, oceans, ice and snow. • Most things on Earth emit long-wave infrared radiation (warmer objects emit more than colder ones. Hence, the relative amounts of infrared radiation emitted by cloud tops, land, oceans and snow/ice give information about their relative temperatures

  7. What is Doppler Radar? • http://www.youtube.com/watch?v=lEBdXO4VPW0

  8. Doppler Imagery • A radar tracking system using the Doppler effect to determine the location and velocity of a storm, clouds, precipitation, etc. • It does this by beaming a microwave signal towards a target and listening for its reflection, then analyzing how the frequency of the returned signal has been altered by the object's motion. • This variation gives direct and highly accurate measurements of the radial component of a target's velocity relative to the radar.

  9. Cloud article • Read the article that I have passed out. • We’re moving to clouds tomorrow and will be spending vast majority of the next few days doing labs.

  10. Cloud article finished • Answer the following questions: • Why do some people say that wind is a paradox? • What time of radar system would we use to determine wind speed? • What is the primary mover of air? • Wind blows from areas of _____________ to areas of __________________. • Which way does the Coriolis Effect deflect air?

  11. Ted talk • 7.E.1.6 • http://www.ted.com/talks/vicki_arroyo_let_s_prepare_for_our_new_climate.html

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