1. Today’s Plan Logistics Finish Field notes on a Catastrophe Ch. 5, 6, 7
Go over grades
Reading Assignment for Monday: Catastrophe Ch. 8, 9, 10, Afterward
Finish Field notes on a Catastrophe Ch. 5, 6, 7
Recap what covered last time (wedges)
Did you do wedge group activity?
Today’s Discussion/Activity
At end take-home essay test (one-week to do)

2. Catastrophe: Group Follow-up
Thermohaline Circulation (N. Atlantic) (worldwide)
8,200 years ago thermohaline disruption?
Comma Butterfly of England
Golden Toad (Monteverde Cloud Forest)
Wyeomyia smithii Mosquito
Video
Polar Bears vs. Mosquitoes—who is doing better and why?
Phenotypic Plasticity vs. Natural Selection

3. Time Machines? In groups of 4
Identify different methods presented in the text so far for estimating past conditions
What systems states in the past have been analyzed?
What methods have been used?

4. Catastrophe: Time Machines
How do we know about ancient atmosphere, temperatures, weather, fauna?
Greenland Ice Cores (also Antarctic Ice Cores)
Atmosphere: trapped air bubbles
Temperature: isotopic composition of the ice (isotopes of hydrogen and oxygen different ratios depending on temperature)
Lakebed sediment pollen samples
What kind of plants were growing at a particular location in the past
Ocean and lakebed sediments for wind blown substances (e.g. dolomite)

5. Chapter 5 Climate models Heat Forcing Water vapor feedback
P. 102 climate cells
NetLogo modeling program
Heat Forcing
2.5 w/m2
Water vapor feedback
Collapse of societies based on drought
Effect of global warming on US drought conditions
Survive 3 to 5 days without water depending on temperature
Survive weeks without food

6. Chapter 6
Amphibious homes (
Dangerous Anthropogenic Interference (DAI)
400ppm, 450pm, 500ppm?
CO2 levels near peak for last 3.5 billion years
Temp near peak in last 420 K years

7. Today’s Plan AT END Handout Essay Exam Go over questions
Go over practice exam question
The first major report to definitively and unequivocally conclude that continued increases in carbon dioxide emissions would result in climate change was released by the National Academy of Sciences in Why do you think it has taken so long for politicians and the general public to become both aware and suitably alarmed about this issue? What particular aspects of the global warming problem might have contributed to this delay? How confident are you that the problem will be adequately addressed in the future?
Differences between writing a stand-alone essay and answering an exam essay question.