1. Climate Change Impacts in Pennsylvania
Marianna Wood
Biological and Allied Health Sciences

2. what’s already happened?
higher annual average temperature
higher annual average rainfall
less snow
more extremely hot summer days
spring events occur earlier

3. two scenarios higher-emissions scenario lower-emissions scenario
represents a world with fossil fuel-intensive economic growth
atmospheric CO2 concentrations reach 940 ppm by 2100—more than triple preindustrial levels
lower-emissions scenario
assumes a relatively rapid shift to less fossil fuel intensive industries and more resource-efficient technologies
atmospheric CO2 concentrations reach 550 ppm by 2100—about double pre-industrial levels

4. summer heat index

5. extremely hot days

6. short-term drought

7. forest trees

8. solutions
CAFE standards

9. solutions
renewable energy

10. solutions
energy efficiency

11. adaptation