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GEOG 1001 9.19.16

by: Melanie Basinger

GEOG 1001 9.19.16 Geog 1001

Melanie Basinger

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About this Document

Class notes from 9.19.16. Include the possible test/quiz questions.
Introduction to Physical Geography
Nicholas Dunning
Class Notes
climate change, global warming, greenhouse gases
25 ?




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This 2 page Class Notes was uploaded by Melanie Basinger on Monday September 19, 2016. The Class Notes belongs to Geog 1001 at University of Cincinnati taught by Nicholas Dunning in Summer 2016. Since its upload, it has received 9 views. For similar materials see Introduction to Physical Geography in Geography at University of Cincinnati.

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Date Created: 09/19/16
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 o Breakdown of materials: paints, plastics QUIZ QUESTION #24: what are some of the consequences of ozone heating? Increased melanoma, increase in photochemical smog, crops and forest productivity decreases, breakdown of materials, increased UV index which is harmful to humans and animals


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