Globalwarmingshow

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Dr Chow Yok Wai
Global Warming Show
Kuala Lumpur

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Globalwarmingshow

  1. 1. Global Warning on Global Warming YW Chow 2007 1
  2. 2. Since 2000, Polar Bears have been found drowned due to absence of Ice to rest on The Polar Bears are dying And we are next..... No Ice to Live on No Food to Eat 2
  3. 3. 3
  4. 4. Climate change • For over 30 years, scientists have predicted increased greenhouse gasses that will cause unnatural changes • In 2000: ✓Antarctic sea ice break-ups ✓Antarctic Peninsula warming ✓Arctic sea ice melting ✓11°F Arctic warming ✓Sea level rise ✓Melting of small glaciers and ice caps ✓And more… 4
  5. 5. 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 5
  6. 6. The climate has always changed 6
  7. 7. Some 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 7
  8. 8. Evidence from the Earth 8
  9. 9. Global instrumental temperature record 5 Warmest years so far: 1. 2005 2. 1998 (El Niño year) Departures in temperature (°C) from the 1961-1990 average 3. 2002 4. 2003 5. 2004 9
  10. 10. 390 2006 380 Carbon Dioxide Concentration (ppmv) 370 360 350 340 330 320 310 1960 1970 1980 1990 2000 10
  11. 11. Reconstructed Surface Temperatures 11
  12. 12. Reconstructed CO2 concentrations 380 370 Carbon Dioxide Concentration (ppmv) 360 350 Mauna Loa (1958 - present) 340 330 Siple Station (1750 - ) 320 310 300 290 280 270 1750 1800 1850 1900 1950 2000 12
  13. 13. CO2 concentration after 50 years of unrestricted fossil fuel burning (600 ppmv) 8-12 o Celcius 2050 Present CO2 concentration (381 ppmv) 300 270 CO2 (ppmv) 240 210 180 Temp. Proxy 800 600 400 200 0 Thousands of Years Before Present Petit et al., 1999; Siegenthaler et al., 2005; EPICA Community members, 2004 13
  14. 14. 2xCO2 GFDL model simulations of Surface Air Warming (°F) 4xCO2 Northern hemisphere mid- continent average warming is 15-25°F! ➙ This is a roasted world. 14
  15. 15. Signs of climate change • 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 15
  16. 16. Hurricanes 16
  17. 17. Hurricanes are Getting More Severe 120 Number of Hurricanes/Category 100 Cat 1 80 Cat 2-3 60 Cat 4-5 40 70-74 75-79 80-84 85-89 90-94 95-99 00-04 Years P. J. Webster, G. J. Holland, J. A. Curry, H.-R. Chang, 2005. 17
  18. 18. Cyclones are more destructive 0.4 Atlantic Potential Destructive intensity (PDI) 0.2 1.2 1.0 0.8 0.6 0.4 0.2 1940 1950 1960 1970 1980 1990 2000 2010 Emanuel, K. (2005), Increasing destructiveness of tropical cyclones over the past 30 years, Nature, 2005 18
  19. 19. Numbers of CATEGORY 4 and 5 hurricanes in last two 15 year periods by ocean basin 85 West Pacific 116 24 Indian 57 36 East Pacific 49 10 Southwestern Pacific 22 1975-1989 1990-2004 16 North Atlantic 25 0 30 60 90 120 19
  20. 20. In 2004, one in five homes in Florida was damaged by a hurricane. JEAN NE – IVAN – SEPT. 2-24, 2004 SEPT .1 3-28, 2004 CHARLEY – AUG. 9-14, 2004 FRAN CES – AU G. 25 -SEP T. 8, 2004 20
  21. 21. 21
  22. 22. Katrina Rita Wilma (Aug 28 ’05) (Sep 21 ’05) (Oct 19 ’05) 22
  23. 23. Change in global land & ocean surface temperature from the 1961-1990 baseline 5 Warmest years so far: 2005, 1998, 2002, 2003, 2004 Temperature anomaly (°C) 23
  24. 24. Glaciers 24
  25. 25. Kilimanjaro 2000 1993 25
  26. 26. Kilimanjaro 1970 2005 26 26
  27. 27. 1978 Qori Kalis glacier 2002 (part of the tropical Quelccaya ice cap, Peru) 27 27
  28. 28. Is Greenland Melting? 28
  29. 29. Greenland satellite melt record 1992 2002 29 29
  30. 30. Rising Seas 30
  31. 31. Sea-level rise • Thermal expansion • Addition of water • Freshening of water • Melting ice sheets – Greenland: 7.4 m (25’) potential – Antarctica: 74 m (250’) potential • West Antarctica (7 m) • East Antarctica (67 m) 31
  32. 32. 32
  33. 33. Tsunamis 33
  34. 34. 34
  35. 35. Floods 35
  36. 36. What can you do? 36
  37. 37. What can you do? • Cut back on consumption (energy, plastics, rich foods) • Plant trees (-20 lbs of CO2 / year) • Drive less / carpool (+25 lbs of CO2 / gallon) • Buy the right CAR, appliances, and light bulbs (compact fluorescent) • Use alternative energy sources (pos. energy bal) • Make informed choices • Don’t freeze in the summer or bake in the winter – keep the thermostat reasonable • UNPLUG! Turn off your TV, and unnecessary lights and appliances – even “standby” modes use electricity (6 power plants worth per year) • Improve home insulation, insulate your water heater • Tons more… Get involved! Don’t remain happy in silence. 37
  38. 38. Standby energy loss • Some of the biggest • 5% of home’s electricity energy wasters: use – adapters for battery-powered • 65 billion kilowatt-hours / electronic devices (cordless year phones, cell phones, digital cameras, etc.) • $5.8 billion annually – appliances or electronic equipment with standby • 87 billion pounds of CO2 capability (such as televisions and computer monitors), a remote control, or a clock (microwaves, DVD players, stereos) 38
  39. 39. Our voracious appetite for energy won’t end – we need to switch to clean alternatives! What are you doing? 39
  40. 40. CO2 concentration after 50 years of unrestricted fossil fuel burning (600 ppmv) 8-12 o Celcius 2050 Present CO2 concentration (381 ppmv) 300 270 CO2 (ppmv) 240 210 180 Temp. Proxy 800 600 400 200 0 Thousands of Years Before Present Petit et al., 1999; Siegenthaler et al., 2005; EPICA Community members, 2004 40
  41. 41. I know it as already too late....... The earth is dying..... 41
  42. 42. but at least we can try to delay it....... 42
  43. 43. For our children and probably a few more generations to come.... 43
  44. 44. Come and join me.... At least we can tell our children that we have tried..... 44

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