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GY101 Latitude and Sun Angles

by: Michelle Azar

GY101 Latitude and Sun Angles GY101

Marketplace > University of Alabama - Tuscaloosa > Art > GY101 > GY101 Latitude and Sun Angles
Michelle Azar
GPA 3.6
Jason C. Senkbeil

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About this Document

Class Notes from the week of August 21 2015
Jason C. Senkbeil
Class Notes
25 ?




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This 2 page Class Notes was uploaded by Michelle Azar on Saturday August 29, 2015. The Class Notes belongs to GY101 at University of Alabama - Tuscaloosa taught by Jason C. Senkbeil in Summer 2015. Since its upload, it has received 24 views. For similar materials see Geography in Art at University of Alabama - Tuscaloosa.


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Date Created: 08/29/15
GY101 8241582620158282015 Latitude 1 Affects the amount of isolation received at Earths Surface 2 47 Degrees Latitude a our latitude is 33 degrees north we do not get direct sun rays 3 80 degrees is the highest sun angle we can get here 4 most control over climate 5 we are on the northern edge of the subtropics a 3 seasons hot cool and comfortable Perihelion vs Aphelion 1 Aphelion July 4th 2 Perihelion January 3rd Milankovitch Cycles 1 Accounts for periodic glaciation of Earth 2 On a 100000 year cycle our orbit shifts from more elliptical to less elliptical a Currently on less elliptical cycle SUN ANGLES 1 Impact amount of isolation 2 Daylight hours a Seasonal b AprilSeptember i Lowsun c Octobermarch i highsun 3 Solar declination a Latitude where sun is directly overhead 90degrees i Sub solar point 4 Zenith angle Sun angle 90 degrees 5 Step 1determine declination of sun for that date 6 Step 2 nd noon sun angle a Difference in degrees between locations latitude and SS point then subtract 90 7 So a What is tuscaloosas sun angle on june 21 8 The analemma a How we nd where the direct rays of the sun are and the noon sun angle i Today the declination of the sun is 11 degrees north ii 3311 22 iii 902268 iv 33942 v 904248 so the sun angle on February 5th is 48 degrees in tuscaloosa Solar intensity 1 intensity Sin A a sinsine b A sun angle 2 90 100 intensity 3 80 98 4 4571 5 2034 6 On the june solstice who is getting more intense solar radiation Us or equator Us lnsolation by latitude 1 lnsolation de nition interected solar radiation 2 We get more solar radiation but 9060 degree locations get more total radiation during the june solstice Those locations get more prolonged sunlight Atmospheric composition Major components of the troposphere 1 Oxygen 20946 2 Nitrogen 78084 a Nitrogen cycle b Makes up majority of atmosphere 3 Carbon Dioxide 0036 4 Argon 934 5 Small percent of trace gases ln earths history are we currently at the highest co2 levels it has ever been FALSE


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