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BGSU - GEOG 1250 - GEOG 1250 Week 3 Class Notes - Class Notes

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BGSU - GEOG 1250 - GEOG 1250 Week 3 Class Notes - Class Notes

School: Bowling Green State University
Department: Geography
Course: Weather and Climate
Professor: Marius Paulikas
Term: Summer 2015
Tags: geography and GEOG
Name: GEOG 1250 Week 3 Class Notes
Description: These notes cover topics from week 3 such as solar radiation, the seasons, lines of latitude, etc.
Uploaded: 01/28/2018
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background image GEOG 1250 Week 3 Notes Yellow = term             pink = important      Winter Weather:
Watch ­ be prepared, events are likely possible
Warning ­ expected, imminent, happening 
These two are for more extreme weather conditions o ex. For hurricanes, tornadoes, severe weather, heavy snow Advisory ­ be on the lookout; be cautious SOLAR RADIATION AND SEASONS The sun provides energy, which is the ability to do WORK The ability of air to change direction come from energy provided by the sun. Conduction ­  Energy being transferred by direct physical contact o Ex. Surface can be hot, and the air directly surrounding it will be hot too Greater energy transfers to items with lesser energy Convection ­  Energy transferring in the fluid­like motion o Ex. Hot air rising, cool air sinking o Results in higher energy content in the heat areas Radiation ­  Electromagnetic waves that do not require a molecular medium o Can travel through empty space; doesn’t need a solid, liquid, or gas o How we receive energy from the sun The shorter the radiation wavelength, the greater the amount of the energy present. Energy admitted by the Earth are considered Longwaves (aka: Terrestrial) Energy admitted by the Sun are considered Shortwaves (aka: Solar) o The earth has a net gain of energy during the day, and a net loss during the night HOTTER VS. COLDER OBJECTS 1. Stefan Boltzman Law ­ the higher an object's temperature, the greater the total amount  of energy will be admitted. 2. Wien’s Law ­ the higher and objects temperature, the shorter the wavelength of the  primary emitted radiation. 1. AKA: shorter/more condensed wavelengths carry more energy SOLAR RADIATION Insolation ­ solar energy 1367 Watts/m^2   >>>   known as the solar constant.
background image Net Gains ­ typically happen in summer months Net Losses ­ typically winter months up until the end of January, then it starts to reverse ENERGY TRANSFER Reflection ­ corresponds to energy that’s being redirected while maintaining its 
intensity/not broken down at all
o Ex. looking in a mirror Albedo ­ the reflectivity rate of a given object o Ex. snow and cloud cover = a lot of light reflected back into space o Doesn’t allow as stark warming Absorption ­ energy being consumed; temperature of a given object will go up; 
synonymous with energy consumption
Scattering ­ pertains to where energy strikes a given object, breaks down and disperses Transmission ­ energy passing through an object, without altering the energy in its 
intensity or direction of travel
o Ex. lightwaves travelling down to the Earth ENERGY INTERACTIONS The Greenhouse Effect ­ gases that can absorb Radiation (then readmit it back out to 
space)
o Ex. sun rays heating the interior of your car to hotter than it is outside o Shortwave radiation is going to pass through greenhouse gases, the 
outgoing/longwaves are the ones that get absorbed or “trapped”
THE SUN AND THE SEASONS We are closest to the sun on Jan 3 and furthest on July 4, but distance from the sun 
does not determine warmth of the Earth
o Axis of the sun determines temperature/energy amount, so if we are facing the 
sun, which we do in summer, then it’s warmer
Summer ­ June 21 Winter ­ December 21 Spring ­ March 21 ( equinox date  ­ 12 hours of daylight everywhere) Fall ­ September 21 ( equinox date  ­ 12 hours of daylight everywhere) The Earth in Space ­  o Axis Angle of Inclination = 23.5° o Plane of Ecliptic: imaginary flat surface/plane that represents the Earth’s orbit Lines of Latitude ­  o Can identify overhead sun patterns, seasonal dates (equinoxes and solstices) 5 significant lines of Latitude ­  Arctic Circle ­ 66.5° N Tropic of Cancer ­ 23.5° N (hits on june 21)

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School: Bowling Green State University
Department: Geography
Course: Weather and Climate
Professor: Marius Paulikas
Term: Summer 2015
Tags: geography and GEOG
Name: GEOG 1250 Week 3 Class Notes
Description: These notes cover topics from week 3 such as solar radiation, the seasons, lines of latitude, etc.
Uploaded: 01/28/2018
3 Pages 25 Views 20 Unlocks
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  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
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