Global Climate Change Presentation

1、The Greenhouse EffectWhat is it?What are greenhouse gases?Any gases that cause the “greenhouse effect!”carbon dioxidenitrous oxidemethaneImagine a car on a cool but sunny daywater vaporGLOBALCLIMATE CHANGEWhat is it?Global Climate ChangeIdentifiable change in the climate of Earth as a whole that las

2、ts for an extended period of time (decades or longer) When due to natural processes, it is usually referred to as global climate variabilityUsually refers to changes forced by human activities that change the atmosphereClimate Changes Currently HappeningWhat causes Earths climate to change?Changes i

3、n the atmosphereNatural processesVolcanoes Tectonic plate movementChanges in the sunShifts in Earths orbitHuman activities any activity that releases “greenhouse gases” into the atmosphereGLOBALCLIMATE CHANGEWell, what do the data say?Meet an Ice Core ScientistWhat does this graph mean?What about th

4、ose natural processes that can cause climate change?Click to explore these natural processes at the EPA website!“Their effects those of human-caused greenhouse gases, together with those of other anthropogenic drivers, have been detected throughout the climate system and are extremely likely to have

5、 been the dominant cause of the observed warming since the mid-20th century.”IPCC Conclusion:GLOBALCLIMATE CHANGEWhats going to happen?Warming and sea level rise will continue and will probably occur more quickly than what weve already seenEven if greenhouse gases are stabilized, this will probably

6、continue to occur for centuriesSome effects may be permanentPossible Future EffectsPossible Future EffectsEffects on EcosystemsCoral systems and other unique ecosystems cannot handle higher temperatures wellWildfires will increaseUp to 30% of species will be at increased risk for extinction due to t

7、he rapid changes in their ecosystemsPossible Future EffectsEffects in North AmericaWarming in western mountains: several effectsIncreased rain: will actually help some cropsHeat waves will increase in number, length, and intensityCoastal communities will be affected by increased flooding and stormsG

8、LOBALCLIMATE CHANGESo. What can we do?Source: Climate Analysis Indicators Tool, World Resources InstituteReferencesIPCC Summary Report for Policy Makers. 2014IPCC Summary Report graphics. 2014About IPCC. IPCC - Intergovernmental Panel on Climate Change. 20 Apr. 2009 . Climate Change | U.S. EPA. U.S. Environmental Protection Agency. 20 Apr. 2009 . Rischard, J. F. High