GC 170 1st Edition Lecture 2 Outline of Last Lecture II. Instructorsa. TA’sIII. Global WarmingIV. Major Changes in the AtmosphereV. What’s going on at the U of A (Resources)VI. Goals of the classVII. Assignments & GradesVIII. Classroom factsOutline of Current Lecture IX. What is science and how does it operate?a. Scientific method definitionb. Scientific method procedureX. The Keeling Curvea. Dave Keelingi. Locationsb. Resultsc. Graphi. Explanation of graphCurrent Lecture1. What is science and how does it operate?a. Hypothesis/Theory Expected data Actual Datab. Scientific method: observing and testingi. Ask a question or recognize a problem1. Often based on prior observationsii. Formulate a hypothesis (educated guess)iii. Make predictions (what will the outcome of the hypothesis be?)iv. Test your hypothesis (through observations and experiments)v. Draw conclusions (from there, develop new theories)c. The steps in the scientific method don’t always work in order2. Keeling Curvea. Project to calculate levels of CO2 in the air started by Dave Keeling, in Pasadena, CAi. Too much influence from the industryThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.ii. Project moved around the United States to find fluctuations in CO2 levels throughout the day 1. Except in the middle of the afternoon, everywhere, there were 310 ppm’sb. The project is now situated in an observatory on top of a tall mountain in Hawaii, Mauna Loai. No industriesii. No nearby citiesiii. Far from vegetationiv. No inversion layersc.i. Fluctuations 1. Late summer- CO2 stored in leaves (Low Points)2. Winter- Leaves have decayed, CO2 in air (High Points)3. How do we make observations in the world?a. Satellites to measurei. Surface temperatureii. Long wave radiationiii. Sea level heightsiv. Atmospheric composition4. Question to think abouta. What is the connection between CO2 and
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