4/7/16 Biology 102 Notes
4/7/16 Biology 102 Notes Bio 102
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This 2 page Class Notes was uploaded by Alyssa Shriver on Tuesday April 19, 2016. The Class Notes belongs to Bio 102 at University of Tennessee - Knoxville taught by Dr. Jeremy Chandler in Spring 2016. Since its upload, it has received 16 views. For similar materials see Introduction to Biology in Biology at University of Tennessee - Knoxville.
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Date Created: 04/19/16
4/7/16 Lecture Notes Climate o The aggregated pattern of weather over time o Hot and cold o Cloudy and clear o Humid and dry o Drizzles and downpours o Snowfall, snowpack, snowmelt o Blizzards, tornadoes, hurricanes/typhoons Does not necessarily mean temperature Temperature changes in pattern Climate Change o Climate change Any substantial change in climate that lasts for an extended period (decades or more) o Global Warming Recent and continuing increase in the average global temperature Modeling o Models are constantly adjusted and improved upon for predictive climate science o Models are not simply “biased” towards “desired results” As more data is collected models are improved upon and often are run through past data sets to assess predictive power for current data You are ultimately only as good as your data and model in predictive models. Methods improve yearly Global Climate Change o Global climate patterns are likely changing because or rising concentration in the atmosphere of Carbon dioxide (CO2) and Certain other gases The Greenhouse Effect o Trapping of hear in Earth’s atmosphere Sunlight warms Earth’s surface Heat radiates back to atmosphere Absorbed by greenhouse gases Ex. Carbon dioxide Trapped heat raises temperature of Earth’s atmosphere and Earth’s surface The Greenhouse Effect and Global Warming o Greenhouse gases Include CO2, water vapor, and methane Are transparent to solar radiation, Absorb or reflect heat, and Contribute to increases in global temperatures in what is often called the greenhouse effect The Greenhouse Effect o Increase in greenhouse gases enhance the effect o Global warming Artic Meltdown o The artic has warmed twice as much as the rest of the planet: artic amplification o Affects many organisms o Canadian polar bears weigh 55 pounds less than they did 30 years ago o Compromises their reproductive ability Surface without snow or ice absorbs more heat Surface with snow or ice reflects more heat Albedo o Icealbedo feedbackis a positive feedback climate process where a change in the area of snowcovered land, ice caps, glaciers or sea ice alters the albedo Today’s Objectives o Explain what climate is. The aggregated pattern of weather over time o Explain why modeling is both responsible for alarmism and complacency in climate debates. What is important to consider when looking at scientific literature about models? o Why do we focus on temperature in many cases when considering climate change? o Explain the greenhouse effect. o Why should someone in Kansas think about ocean currents?
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