Impacts of global warming


- on what time frame will the most serious impacts occur? (emphasize the 100
   year + time scale)

- direct impacts of warmer temperatures and their dependence on latitude (concept
   of winner and loser nations)

- impacts of a more vigorous hydrologic cycle (more floods and droughts)

- sea level rise... how is it estimated? what are the uncertainties?  what
   countries are most at risk?  why does the time scale over which the rise takes
   place matter? (introduce concept of adaptation)

- impacts on the Pacific Northwest (emphasis on water supply)

- fertilizing effect of increased CO2

- how long will the impacts last after the burning of fossil fuels stops?

- note that perpetrators and victims of greenhouse warming are widely separated in
   space and time; much more so than in acid rain and ozone problems