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BGSU - GEOG 1250 - Topic 3 Notes - Class Notes

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BGSU - GEOG 1250 - Topic 3 Notes - Class Notes

School: Bowling Green State University
Department: Geography
Course: Weather and Climate
Professor: Marius Paulikas
Term: Summer 2015
Tags:
Name: Topic 3 Notes
Description: Topic 3 Notes - Jan 22 - Jan 26
Uploaded: 01/27/2018
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background image Topic 3
Solar Radiation and Seasons
The sun provides ENERGY, or the ability to do WORK WORK = object of mass able to change its speed or direction of movement over a set  distance Conduction / Convection Conduction o Energy being transferred through direct physical contact o EX: person hold metal rod into fire Heat flow along rod by conduction Hot rod burns hand by conduction Convection o Energy transferred in a fluid like motion o EX: warm air rises, cold air sinks Radiation Radiation – electromagnetic waves, does not require a molecular medium (does not need  solid, liquid, or gas) The shorter the radiation wavelength, the greater the amount of energy present Earth = long wave  Sun = short wave – visible spectrum Hotter vs Colder Objects Stefan­Boltzman Law o The higher an objects temp, the greater total amount of energy that is emitted  Wien’s Law o The higher an objects temperature, the shorter the wavelength of the primary  emitted radiation  Solar Radiation Isolation – solar energy 1367 Watts/m 2  = Solar Constant Energy Transfer Reflection o Energy redirected while maintaining its intensity
background image o EX: look into mirror Albedo o Reflective rates of a given object o EX: cloud cover Absorption o Energy being consumed  o Energy typical tends to go up Scattering o Energy strikes an object and the breaks down and is disbursed in multiple  directions Transmission o Energy passing through a given object and the energy is unaltered in its intensity  and direction of travel o EX: light waves Greenhouse Effect Short wave radiation will pass through greenhouse gases Long wave radiation is absorbed  The Sun and Seasons Perihelion – day when earth is closest to sun (Jan 3) Aphelion – day when earth is furthest from sun (July 4) Earth in Space Plane of Ecliptic – imaginary flat surface in outer space where earth and sun are on Angle of Inclination – 23.5 angular tilt Lines of Latitude Range from 0 o ­90 o  N and 0 o ­90 o  S 5 significant lines of latitude  o Tropic of Capricorn 23.5 o  from equator December 21 ­ winter o Equator  0 o September 21, March 21 – Fall, Spring  Equinox days  o Tropic of cancer 23.5 0  from equator June 21 ­ summer o Antarctic Circle

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School: Bowling Green State University
Department: Geography
Course: Weather and Climate
Professor: Marius Paulikas
Term: Summer 2015
Tags:
Name: Topic 3 Notes
Description: Topic 3 Notes - Jan 22 - Jan 26
Uploaded: 01/27/2018
3 Pages 30 Views 24 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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