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Is climate
  change
happening?
Climate change is happening now:

•   Temperatures are rising.
•   Rainfall patterns are shifting.
•   Glaciers and snow are melting.
•   The global mean sea level is rising. 
   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.
EVIDENCE
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.
Global temperature rise
   All three major global surface temperature 
    reconstructions show that Earth has warmed 
    since 1880.
Shrinking ice sheets
   The Greenland and Antarctic ice sheets have 
    decreased in mass.
Declining Arctic sea ice
   Both the extent and thickness of Arctic sea ice 
    has declined rapidly over the last several 
    decades.  
Glacial retreat
   Glaciers are retreating almost everywhere 
    around the world (including in the Alps, 
    Himalayas, Andes, Rockies, Alaska and 
    Africa).
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 
  don't 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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Marianela_ClCh_Evidence

  • 1. Is climate change happening?
  • 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. 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.
  • 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. Global temperature rise  All three major global surface temperature  reconstructions show that Earth has warmed  since 1880.
  • 7. Shrinking ice sheets  The Greenland and Antarctic ice sheets have  decreased in mass.
  • 8. Declining Arctic sea ice  Both the extent and thickness of Arctic sea ice  has declined rapidly over the last several  decades.  
  • 9. Glacial retreat  Glaciers are retreating almost everywhere  around the world (including in the Alps,  Himalayas, Andes, Rockies, Alaska and  Africa).
  • 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  don't 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.