ENVS 80b.2005.assignment.2

ENVS 80b.2005.assignment.2 - ENVS 80b: Ecological Forecast...

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ENVS 80b: Ecological Forecast for Global Warming Fall 2005 Assignment #2 due in class October 25 PART ONE : answer the following questions within the 2-page limit see syllabus for more information 1. Approximately how much CO 2 is in the atmosphere (in ppm)? (6 pts) Before the Industrial Revolution, there was 280 ppm of carbon dioxide in the atmosphere. Now, due to global warming caused by anthropogenic causes, there is about 370-380 ppm carbon dioxide in the atmosphere. 2. Match the descriptions most closely associated with the appropriate people ( note that some people may not be used at all ) (20 pts): __C __ Charles David Keeling __E __ Milutin Milankovitch __D __ Jean-Baptiste Joseph Fourier __A_ Freidrich William Hershel _ ___ _ John Stewart __B_ Svante Arrhenius a. first asked the question in the 1700s, ‘might the sun vary in its brightness, bringing cooler or warmer periods?’ b. Nobel prize-winning physicist in the late 1800s who asked, “how do anthropogenic CO 2 emissions and feedbacks affect the global climate?” c. set up a research station on Mauna Loa volcano and began documenting rising CO 2 levels from 1958 on – research is considered an important project showing anthropogenic influences on the climate d. in the mid-1800s, he asked the question, ‘what determines the average temperature of the Earth?’, and coined the term ‘greenhouse effect’ e. developed a theory to explain changing distribution – through rhythmic cycles – of incoming solar radiation; found it to be based on changes in the Earth’s orbit around the sun, timing of the orbit, and axial tilt 3. List the three main working groups in the IPCC (6 pts): In the IPCC, the three main working groups are simply Working Group I, which focuses on science, Working Group II, which focuses on adaptation and mitigation impacts, and Working
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ENVS 80b.2005.assignment.2 - ENVS 80b: Ecological Forecast...

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