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2009+1F91+-+Ch+3+-+The+Global+Energy+System+-+DONE[1]

2009+1F91+-+Ch+3+-+The+Global+Energy+System+-+DONE[1] -...

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The Global Energy System GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected] Chapter 3 Part 1
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Announcements GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected] Keep up with your readings. Lectures serve to highlight specifics you NEED­TO­KNOW from the textbook Just because it was not covered in lecture does not mean that it will not appear on a test. I will get you copies of the lectures eventually
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Announcements GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected] Week of Topic Readings Laboratory September 14 Course Introduction Chapter 1 No Labs this week September 21 Introducing Physical Geography Chapter 1 / 2 Lab 1 (odd) September 28 Earth as Rotating Planet Chapter 2 / 3 Lab 1 (even) October 5 Global Energy System Chapter 3 / 4 Lab 2 (odd) October 12 Temperature Cycles Chapter 4 No Labs this week October 19 Winds and Circulation Chapter 5 Lab 2 (even) October 26 Moisture and Precipitation / Quiz Chapter 6 Lab 3 (odd) November 2 Weather Systems Chapter 7 Lab 3 (even) November 9 Scope of Climate Chapter 8 Lab 4 (odd) November 16 Low­Latitude Climate Chapter 9 Lab 4 (even) November 23 Mid & High­Latitude Climate Chapter 10 Lab 5 ( ALL ) November 30 Review Review
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Introduction GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected]
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Introduction Constant flow of energy from the sun Drives nearly all natural earth shaping processes § wind § waves § rivers § ocean currents Spherical shape of Earth means: § radiation not received uniformly § leads to regional variation in energy flow rates § drives the global wind system, and ocean currents Energy balance such that flows and fluxes reaching the Earth are the same as those returned to space (equilibrium on global scale) GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected]
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Electromagnetic Radiation Electromagnetic (EM) radiation consists of electric and magnetic waves that oscillate together, at right angles to each other. EM waves travel in a direction perpendicular to the direction of their oscillation (see figure 3.1 in text) GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected]
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Electromagnetic Radiation The distance between successive peaks, or troughs is the wavelength (λ) . Usually measured in micrometers (µm), or nanometers (nm) at shorter lengths, up to centimeters or even meters for much longer wavelengths GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected] λ
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Electromagnetic Radiation Electromagnetic radiation is a self­propagating composite of an electric field plus a magnetic field Changing electric field produces Changing magnetic field produces GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected]
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Electromagnetic Radiation Light and Heat are 2 familiar forms of EM Radiation GEOG 1F91 – Principles of Physical Geography– The Global Energy System [email protected] Shorter wavelengths Longer wavelengths
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