1. GLOBAL WARMING

8. More Greenhouse Gases Mean a Warmer Earth
2014 had the warmest average temperature world wide on record.

12. Effects of Global Climate Change
Ocean as CO2 sink - excess CO2 is starting to harm ocean life

13. Effects of Global Climate Change- Melting Ice and Rising Sea Levels
Sea level rise caused in 2 ways
Thermal Expansion
Water expands as it warms
Melting of land ice
Retreat of glacier and thinning of ice at the poles
Melting has positive feedback
Increased melting decreases ice, which decreases albedo leading to further warming

14. Case-In-Point Impacts in Fragile Areas
Eskimo Inuit live traditional life dictated by freezing climate
Climate change is altering their existence
Wildlife are smaller or displaced
Reduced snow cover and shorter river ice seasons
Thawing of permafrost (right)

15. Effects of Global Climate Change- Changing Precipitation Patterns
Some areas will get more water, some areas will have greater droughts
Ex: Hurricanes will likely get stronger

16. Effects of Global Climate Change- Effects on Organisms
Zooplankton in parts of California Current have decreased by 80% since 1951
Effecting entire food chain
Decline in krill around Antarctica
Caused decrease in penguin populations

17. Effects on Organisms - Coral Reefs
Coral reefs can be bleached (right) due to increase in water temperature
Affects coral symbiotes and makes them more susceptible to diseases to which they would otherwise be immune

18. Effects on Human Health
Increased number of heat-related illnesses and deaths

22. Alternative Energy sources

23. Changes in Energy Production Solar
Advantages:
Does not emit CO2 during energy production.
Energy source, the sun, is free.
Can be purchased and used by anyone who wants.
Once installed, solar systems can last for years and require little maintenance.
Disadvantages:
Large capital investment at installation.
Produces toxic waste during production.
Requires large surface areas to produce significant amounts of energy.
The sun goes down.

24. Changes in Energy Production Wind
Advantages:
Wind is free energy and large amounts of energy produced.
Can be put on land that has other uses.
Easily used on large scales.
Can be installed in Oceans.
Disadvantages:
Expensive to produce and install.
Kills birds.
Can only produce energy when wind is blowing at the right speeds.

25. Changes in Energy Production Wave
Advantages:
Wave energy source is free.
Large amounts of energy available.
Doesn’t require large amounts of land.
Disadvantages:
Can cause problems with aquatic life.
Can cause problems with shipping and water sports
Transferring energy produced to the shore.
Intermittent source.

26. Changes in Energy Production Geothermal
Advantages:
Uses known technology to produce energy.
Once installed the energy source is free.
Can produce energy 24/7.
Disadvantages:
Can cause earthquakes.
If used to heavily production can drop.
Uses water to cool the generator, thermal pollution.