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Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
Global Warming Consequences 1
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Global Warming Consequences 1

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Global Warming Consequences 1. Credits go to the original owner.

Global Warming Consequences 1. Credits go to the original owner.

Published in: Education, News & Politics
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  • 1. 2
  • 2. `T h e r e is n e w a n d s t r o n g e r e v id e n c e th a t m o s t o f th e w a r m in g o b s e r v e d o ve r t h e la s t 5 0 y e a r s is a t t r ib u t a b le t o h u m a n a c t iv it y ' Intergovernmental Panel on Climate Change (United Nations), Third Assessment Report, 2001
  • 3. o b s e r v e d in c r e a s e in g lo b a lly a v e r a g e d t e m p e r a t u r e s s in c e t h e m id -2 0 th c e n tu ry is ve ry like ly d u e t o th e o b s e rv e d in c r e a s e in a n t h r o p o g e n ic g re e n h o u s e g a s Intergovernmental e n t r Climate Change.(United c o n c Panel on a t io n s ' Nations), Fourth Assessment Report, 2007
  • 4. c lim a t e s y s t e m is u n e q u iv o c a l , a s is n o w e v id e n t f r o m o b s e r v a t io n s o f in c r e a s e s in g lo b a l a v e r a g e a ir a n d o c e a n te m p e ra tu re s , w id e s p r e a d m e lt in g o f s n o w a n d ic e , a n d r is in g g lo b a l m e a n Intergovernmentale a le Climate ' s Panel on v e l . Change (United Nations), Fourth Assessment Report, 2007
  • 5. Greenhouse Gases • Let sunlight in – short wavelengths • Earth heats up and radiates heat – longer wavelengths • GHGs – don’t let Earth’s heat out
  • 6. Increased Greenhouse Gases Earth’s “cooling” system is “clogged” • Net effect: – Earth warms to a temperature where its radiation is shorter wave- lengths and can escape
  • 7. Evidence f romthe Earth
  • 8. Observations of recent climate change Global mean temperature Global average sea level Northern hemisphere snow cover 9
  • 9. Global Instrumental Temperature Record 10 warmest years 10
  • 10. 390 2007 380 Carbon Dioxide Concentration (ppmv) 370 360 350 340 330 320 310 1960 1970 1980 1990 2000
  • 11. Signs that global warming is underway • Sea level rise • by thermal expansion AND ice melt • Sea ice melting (Arctic and Antarctic) • Glaciers melting worldwide • Arctic and Antarctic Peninsula heating up fastest • Melting on ice sheets is accelerating • More severe weather (droughts, floods, storms, heat waves, hard freezes, etc.) • Bottom line: • These changes do not fit the natural patterns unless we add the effects of increased GHGs
  • 12. Some climate change facts • Globe 1°F warmer than 100 yrs ago • Last glacial max. was only 5°F cooler • Not equally distributed – Some areas have warmed 11°F – Winter and night increasing fastest (~5 times faster) • Weather becoming more variable and more severe
  • 13. Arctic Sea Ice Melting 14
  • 14. Arctic sea ice extent 0.4 Ice Extent Anomaly (106 km2) 0.2 0.0 -0.2 -0.4 -0.6 -0.8 15 1980 1985 1990 1995 2000 2005
  • 15. Melting of small glaciers and ice caps 2004 1941 16
  • 16. McCarty Glacier, Alaska 17
  • 17. Kilimanjaro 18
  • 18. Kilimanjaro 1970 2005 19
  • 19. Patagonia 1928 2004 20
  • 20. Sea-level rise
  • 21. Sea-level rise
  • 22. Additional consequences • Fastest extinction rate in 65 M years (1000x normal rate) • Increased disease (e.g. asthma, malaria) • Increased poverty and hunger • Sea level rise • More extreme weather – Droughts – Flooding – Heat-waves – Storms
  • 23. Coral bleaching 24
  • 24. Mass extinction 25
  • 25. Habitat loss 26
  • 26. Palmer Drought Severity Index 1900-2002 27
  • 27. What can you do?
  • 28. Reduce consumption
  • 29. Plant trees
  • 30. Drive less
  • 31. Shop smart
  • 32. Alternative energy
  • 33. Be informed
  • 34. Unplug
  • 35. Improve insulation
  • 36. Don’t remain happy in ignorance

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