SPU25_Sp18_section2.pptx - ENVR E103 ENERGY AND CLIMATE VISION FOR THE FUTURE What you should know about Section There will be two sections every week

SPU25_Sp18_section2.pptx - ENVR E103 ENERGY AND CLIMATE...

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ENVR E103 ENERGY AND CLIMATE: VISION FOR THE FUTURE 2018-02-08 2018-02-11
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What you should know about Section There will be two sections every week. The first time slot is Thursday 8:30- 9:30pm, Eastern Time. The second time slot is Sunday 11:30 am -12:30. The content will be identical. The two sections will cover different timezones, and you can choose either one of them to attend. Sections will consist of discussion of lecture material and reading, example problems, homework guidance, and assistance with topics for the final paper.
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Homework #1 due Feb 12 th 1pm
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Section last week Impact factors on climate: 1. Changes of incoming solar radiation; 2. Reflectivity/albedo; 3. Greenhouse gas effects; 4. Land-ocean distribution; 5. Atmosphere - ocean interaction.
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Energy Balance
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Greenhouse Effect Energy TO Earth—short wavelengths Energy FROM Earth—long wavelengths (all bodies with any temperature radiate heat) Greenhouse gases Transparent to short wavelengths (let it in) Absorb long wavelengths (keep it in) In order of importance: H2O, CO2, CH4, O3, N2O, and Halocarbons Cold planet without them! -16C (3F)
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Current Greenhouse Gases Carbon dioxide Fossil fuels (coal, oil, gas), burning wood Methane Fossil fuels, swamps, cows, rice paddies, rotting sewage Nitrous Oxide Bacteria, fertilizer, cars Ozone Smog (bad) Stratosphere (good) CFCs Only from humans
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HOMEWORK RELATED QUESTIONS Energy and Climate: Vision for the Future
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