Test 2 Study Guide

Test 2 Study Guide - 3 The Greenhouse Effect a Atmospheric gases CO2 CH4 CFCS trap more heat up the lower atmosphere similar to the effect of a

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Test 2 Study Guide Explanations Lecture 7- Global Climate Change 1. Tools for Studying Global Climate Change a. Geologic Record- Co2 trapped in air bubbles in glacial ice, organic matters in sediments (Fossils – Pollen – Tree Rings) b. Real –Time Monitoring- sampling atmospheric gas, recording temperature, composition of the ocean c. Mathematical Models- Global Circulation Models (GCMs) – predicting changes in atmospheric circulation at the global scale 2. Global Climate Change a. Know the tools listed above b. Climate Change- the study of the connections between atmosphere, lithosphere, hydrosphere, and biosphere c. Global circulation and movement of air masses in atmosphere produce the major climatic zones d. Atmosphere is considered as a complex chemical factory
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Unformatted text preview: 3. The Greenhouse Effect a. Atmospheric gases: CO2, CH4, CFCS trap more heat up the lower atmosphere, similar to the effect of a greenhouse b. Concentration of greenhouse gases increased due to human activites 4. Why does climate change? a. Milankovitch Cylces: 100K years-variation in earth orbit around the sun a.i. 20-40K years: tilting and wobbling of earth axis b. Climate system unstable even in shorter cycles( a few decades) b.i. Ocean conveyor belt, global circulation of ocean water , contributes to the change 5. We can sequester CO2 by increasing ocean photosynthesis or injecting CO2 a. Fertilize ocean with Iron (SOFEX Experiment) b. Ocean injection of gaseous CO2...
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This note was uploaded on 12/20/2011 for the course GEOS 1024 taught by Professor Meschreiber during the Spring '08 term at Virginia Tech.

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