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UC - GEOG 1001 - Class Notes - Week 5

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UC - GEOG 1001 - Class Notes - Week 5

School: University of Cincinnati
Department: Geography
Course: Introduction to Physical Geography
Professor: Nicholas Dunning
Term: Summer 2016
Tags: climate change, global warming, and greenhouse gases
Name: GEOG 1001 9.19.16
Description: Class notes from 9.19.16. Include the possible test/quiz questions.
Uploaded: 09/19/2016
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background image Introduction to Physical 
Geography
9.19.16 Climate Change The Greenhouse Effect CO2 amount and rate of increase now at unprecedented levels; CO2 30-40% 
more, CH4 2.5 times preindustrial level
QUIZ QUESTION #23: Which of the following is NOT a significant Greenhouse Gas? Nitrogen Globally, the ten warmest years on record have occurred in the past 15 years Mean global air temperature has increased 0.6⁰C (1.1⁰F) since 1900 
(removing urban impact) due to humans 
Each of the last three decades have been progressively warmest since 1850; 
new records annually 
Many of last 20 yrs. are hottest since 1880; 2012, 2009, 2005, 2006, 1999--
1998 and 2010 tied as warmest.  2014 hottest year ever in the contiguous 
US. 
Since 1900: Sea levels have increased 18 cm (2/3 thermal expansion, >90% 
heat storage) and pH decreased (6% more acidic)
Permafrost has warmed 2-4⁰C since 1900  Arctic sea ice extent decreasing 7%/ decade, thinning  Alpine glaciers melting in mid- and high latitudes (Greenland)  Snow cover less extensive, thinner and of shorter duration Increased 
frequency in extreme weather
QUIZ QUESTION #24: Which of the following is a predicted consequence of global 
warming?
Flooding of low – lying coastal areas, spreading of tropical diseases (Malaria  and Zika), change in species compositions, and the disruption of many international 
trade agreements (most likely dealing with food)
CFCs break down Ozone in the Stratosphere Ozone in the Stratosphere shields the Earth’s surface from solar UV radiation.
Most life forms are not adapted to tolerate increased exposure to UV radiation
Effects of an increase in UV Radiation o Humans: skin burns, cancer, cataracts 10% ozone, increase nonmelanoma 26% –  UV index (NWS, EPA) and burn time based on skin prototypes  Sunscreen, uv sunglasses  o Harmful to other animals (especially amphibians) 
o Increase in photochemical smog 
o Crops and forest productivity decrease 

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School: University of Cincinnati
Department: Geography
Course: Introduction to Physical Geography
Professor: Nicholas Dunning
Term: Summer 2016
Tags: climate change, global warming, and greenhouse gases
Name: GEOG 1001 9.19.16
Description: Class notes from 9.19.16. Include the possible test/quiz questions.
Uploaded: 09/19/2016
2 Pages 10 Views 8 Unlocks
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  • 24/7 Homework help
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