ATOC 1060 1st Edition Lecture 1 Outline of Last Lecture First LectureOutline of Current Lecture I. Climate vs. WeatherA. What’s the difference?II. Effect of Carbon Dioxide in the atmosphere A. Ice CoresIII.Sea IceCurrent LectureI. Climate vs. WeatherClimate is what you expect. Weather is what you get.What separates weather and climate?-Timescales-Spatial scales-Average and fluctuationsII. Carbon DioxideCO2 levels have been increasing rapidly since 1960 -Since 1960 levels of CO2 have NEVER reached over 300ppm -Present day: CO2 levels are now at 400ppm! Highest levels in 800,000 years -We found this by looking at air bubbles that are trapped in Ice Cores-Ice Cores: ice sheets from polar ice caps contain ice core samples.What’s responsible?Fossil Fuels are largely responsible-Budgets- records of how much we have burned-Isotopic analysis (13C/12C ratio is decreasing)Land and Ocean surface temperatures have been increasing by 0.8 K since 1850These 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.Worry:-Temperature changes went with past CO2 changes- Planets with large CO2 concentrates are getting warmerIII. Sea IceSea Ice: found in Polar Regions during fall and winter. Water freezes and causes ice to Form at the ocean surface. This only happens when the surface temperature of water reaches the freezing point. Sea Ice is slowly melting as time
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