Marianela_ClCh_Evidence

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Marianela presents her collection of data to provide evidence that climate change is taking place.

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Marianela_ClCh_Evidence

  1. 1. Is climate changehappening?
  2. 2. Climate change is happening now:• Temperatures are rising.• Rainfall patterns are shifting.• Glaciers and snow are melting.• The global mean sea level is rising. 
  3. 3.  We expect that these changes will continue, and that extreme weather events resulting in hazards such as floods and droughts will become more frequent and intense. Impacts and vulnerabilities for nature, the economy and our health differ across regions, territories and economic sectors.
  4. 4. EVIDENCE
  5. 5. Sea level rise Global sea level rose about 17 centimeters in  the last century. The rate in the last decade,  however, is nearly double that of the last  century.
  6. 6. Global temperature rise All three major global surface temperature  reconstructions show that Earth has warmed  since 1880.
  7. 7. Shrinking ice sheets The Greenland and Antarctic ice sheets have  decreased in mass.
  8. 8. Declining Arctic sea ice Both the extent and thickness of Arctic sea ice  has declined rapidly over the last several  decades.  
  9. 9. Glacial retreat Glaciers are retreating almost everywhere  around the world (including in the Alps,  Himalayas, Andes, Rockies, Alaska and  Africa).
  10. 10. Climate change is already beginning to transform  life on Earth. Around the globe, seasons are  shifting, temperatures are climbing and sea  levels are rising. And meanwhile, our planet  must still supply us (and all living things) with  air, water, food and safe places to live. If we  dont act now, climate change will rapidly alter  the lands and waters we all depend upon for  survival, leaving our children and grandchildren  with a very different world.

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