Lect+15+Fall+2011 - WhatisaCFC Seasonalozonehole(Antarctica...

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9/29/2011 1 Review from Last Lecture What is a CFC? How do they lead to ozone depletion? Seasonal ozone hole (Antarctica) PSCs Arctic? Montreal protocol 1 Chapter 3: The Chemistry of Global Warming Sept. 30/2011 What accounts for global warming? 1. Increase in atmospheric temperatures mainly due to ozone depletion 2. Increase in atmospheric temperatures mainly due to the emission of greenhouse gases 3 3. Decrease in atmospheric temperatures mainly due to the emission of greenhouse gases 4. 1 and 2 5. I have no clue Global warming is… 1. A problem for future generations 2. Already a serious problem 4 3. Not a problem at all; it’s all a hoax
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9/29/2011 2 Chapter Introduction Global warming: We’ll look at: Scientific evidence What role does chemistry play? What effects are linked to this increase in temperature? Role of human activities 5 Chapter Introduction We need to understand the Earth’s climate system and how it responds to change Incoming and outgoing solar radiation Role of atmospheric gases Rate at which temperature change is occurring Understanding CO 2 How does CO 2 absorb infrared radiation Structure and shape Policies for restricting CO 2 emissions 6 Our Solar System Saturn Uranus Neptune
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