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Global Warming

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Sharon Merante

on 29 November 2012

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Transcript of Global Warming

Global Warming An increase in the average temperature on earth. Greenhouse Effect - A natural situation in which heat is trapped in earth's atmosphere by gases such as carbon dioxide. http://climate.nasa.gov/kids/ClimateTimeMachine/climateTimeMachine_kids.cfm
Go To "Climate Time Machine" at bottom of the page and work through the interactive activity of the four categories. - 5 inches in diameter
- depth of 3,331 meters deep (about 2 miles)
- cut into 1 meter (3 ft) - long pieces
- 100,000 yrs. ago, but able to test 40,000 yrs. ago
- air bubbles contain dust, impurities, & gases
- able to determine temperature by gases located in bubbles
- greenhouses gases are greater now than any other time in past 650,000 yrs. What's good about greenhouse gases?

+ Without Greenhouse gases, earth would be 33 degrees C cooler (91 degrees F).
+ Greenhouse gases also help limit big temperature swings from day to night. Sea level rising Possible Concerns of Global Warming - Extreme Weather Prediction
- precipitation and drought more severe
- heat waves more frequent
- more frequent and intense tropical storms - Ecosystems Stressed
- polar communities
- coral reefs
- higher elevation ecosystem - Agriculture
- increase pest and disease outbreaks - Feedback Loop
- as more ice melts, less white to reflect light - and more dark, open water to absorb heat, which causes ice to melt faster. + Solutions
+ Conservation
+ Carpool
+ Renewable Energy
+ Engineering
+ Boat Clouds
+ Pumping CO2 back into ground http://flood.firetree.net/ http://www.epa.gov/climatechange/kids/index.html How do volcanic eruptions affect the humans and the environment? - Mt. Tambora in Indonesia erupted in 1815
- most powerful in 19th Century
- 1816 - Year without a summer in Europe and portions of U.S.
- temp. dropped 3 degrees C & took 3 yrs for temp. to return to normal
- widespread crop failure caused hunger and famine across the world Climate is what we expect, weather is what we get.
Mark Twain So...
- Are we all doomed???
- What can we do about it??? Is the ozone layer affected by global warming? At this website, view the video under "Home" entitled "Climate Change Basics". Then go to "Learn the Basics" and watch the brief animation in the green box on the right side of the page titled "The Greenhouse Effect". Ozone Layer:
- Thin layer of gas
- Protects us from suns UV radiation
- skin cancer & eye damage
- Chlorofluorocarbons (CFC) depleted ozone
- Montreal Protocol treaty
- Depletion peaked in 2010
- Naturally repairing itself
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