4-Rad Sp09 - Todays Outline Earths Radiation Budget A Incoming Energy reflection albedo scattering absorption B Outgoing Energy terrestrial

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Todays Outline: Earth’s Radiation Budget A. Incoming Energy reflection & albedo scattering absorption B. Outgoing Energy terrestrial radiation heat energy transfer processes: Evapotranspiration / latent heat Conduction Convection / Advection C. The system as a whole & latitudinal variations D. Urban Heat Islands E. Volcanism, nuclear winter, Dino extinctions
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Review: What is the relationship between altitude and pressure? As Altitude Pressure
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Review of Electromagnetic Radiation: Which substances emit EMR? Hot or Cold? Which emit longwave radiation? Hot or Cold?
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Why does temperature rise in the … Ozone absorption of insolation Intense solar radiation excites molecules Stratosphere? Thermosphere?
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Review: Tilt and “Axial Parallelism”: As earth orbits the sun, axis stays tilted in the same direction
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Review: Why do we have glacial / interglacial cycles?
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Changes in Earth-Sun Relationships Milankovitch Cycles” A mathematical explanation of climate change
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Earth-Sun Geometry sample exam question: You are planning a backpacking trip to Wrangel Island off the coast of Russia at 71 ° N Which 6-day time period would give you the longest days for hiking? 1. March 20-25 2. Dec 20-25 3. June 1-6
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1. Reflection: by ATM and Surface back to space as shortwaves 3 Possibilities
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Reflection and Albedo Albedo – % of insolation (short waves) reflected by a surface What kind of surfaces reflect best and have the highest albedos?
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Various Albedo Values
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What type of earth surface would have a high albedo?
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This note was uploaded on 04/09/2010 for the course GEOG 1104 at Virginia Tech.

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4-Rad Sp09 - Todays Outline Earths Radiation Budget A Incoming Energy reflection albedo scattering absorption B Outgoing Energy terrestrial

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