1. Please Do Now: Give an example of a positive feedback loop involved in climate change and explain how it is exacerbating the problem.

2. Agenda Do Now Feedback loop part of Inconvenient Truth Data Analysis Effect of global warming notes Nitrogen cycle practice problems

3. Data Analysis 1.What is measured on the x- axis? 2.What is measured on the y- axis? 3.When was the “Little Ice Age”? 4.At what point in the last 2000 years has temperatur e been the highest?

4. 1.What do blue colors on the map represent? 2.What units are the projections in? 3.When is this projection for? 4.How is precipitation in New York predicted to change?

5. Data Analysis 1.When do the measuremen ts mostly begin on all three charts? 2.How has the extent of snow cover, sea ice, and glaciers changed since data was measured?

6. Data Analysis 1.What units are on the y-axis? 2.What is the overall trend shown in this graph?

7. Data Analysis 1.What is projected on the x-axis? 2.What do the different groups of bars represent? 3.What do the different colors represent? 4.What is the overall trend shown in this graph?

8. Unifying question How do you expect life in New York will be different in 200 years if the release of greenhouse gases continues to increase? Use information from specific charts from the data analysis.

9. What are the projected physical effects of global warming? Sea level rise Ocean acidification Increased storm strength

10. What are the projected ecological effects of global warming? Increased 20-30% of extinctions

11. What are the projected social effects of global warming? A mix of effects Poorer and lower elevation nations will get hit worse Increased displacement of peoples

12. What are the projected disastorous effects of global warming? Shut down of the Atlantic ocean currents Collapse of the polar Ice Sheets Release of methane hydrates