climate_change2.sakai

climate_change2.sakai - Exam 2: Friday, March 12th you will...

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Exam 2: Friday, March 12 th you will need your RU ID and #2 pencil Chapters from textbook: 5,6,7 Chapters from Dire predictions: 1 and 2 50 multiple choice On Sakai Study guide Assignment 2 on Climate Change Due Wednesday, March 10th
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CO 2  and Temperature – closely related
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More on CO 2 How do we know CO 2  increases aren’t  part of a natural cycle? “fingerprints” such as carbon  radioactivity and atmospheric  carbon isotope ratio (pg. 34-35) Amount of CO from fossil fuel  burning is known
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Climate Proxies Proxies are devices that allow scientists to infer climate information,   indirectly Examples include ice cores, lake and ocean sediments, boreholes, tree rings,  corals, and fossil pollens
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The last 2000 years of temperature
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Milutin Milankovitch: Theory published in 1941 Natural Variation: Orbital Variations
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Volcanic eruptions Catastrophic eruptions have in the past contributed to climate changes •primarily ejects CO 2 rarely enough to contribute much to climate ejects aerosols and SO 2 into stratosphere net cooling effect
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Putting together past climate… *Ice ages and Interglacial Warm Periods have been driven largely by orbital cycles, enhanced by positive feedbacks -Massive volcanic eruptions play a smaller role
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130 years of instrumental temperature data 95% confidence that temperature is within 0.05°C of record since 1960 Increasing about 0.1°C/decade, but was 0.2°C in past decade - Warmest decade on record
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This note was uploaded on 10/16/2011 for the course GEOGRAPHY 101 taught by Professor Vancura during the Spring '08 term at Rutgers.

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climate_change2.sakai - Exam 2: Friday, March 12th you will...

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