Index
 Reasons of Global Warming
 The Impact of global warming on
the nature
 Causes and Effects
 What We Can Do
Solar energy
passes through
Radiant
heat is
trapped
Greenhouse
gases in
atmosphere
Reasons of Global Warming
“Greenhouse g...
Burning carbon-containing fossil fuels
produces carbon dioxide
(Combustion)
C + O2 CO2
CO2: The Most Significant Greenhous...
CO2 + H20 HCO3
- + H+
Water becomes
more acidic.
(ACID)
Remains in the
atmosphere
(greenhouse gas)
Dissolves in
sea water
...
1.8
1.4
1.1
0.7
0.4
0
-0.4
-0.7
-1.1
GlobalTemperatureChange(degF)
Year1000 1200 1400 1600 1800 2000
380
360
340
320
300
2...
The Arctic Ocean could be ice-free in summer by 2040
-according to U.S. National Center for Atmospheric Research
2000 2040
“Climate change is the m
ost severe problem that
we are facing today.”
“And it’s reason is
nothing but the
GLOBAL WARMING”
 Melting ice, glaciers
and permafrost
 Animals
 Wetlands and forests
 Weather and storms
 People and culture
1958
2003
“A warming climate will damage Alaska’s infrastructure because it was
designed for a cold climate.”
 Damage to infrastruc...
 Oyster contamination in
summer of 2004
 Hazardous travel, hunting
and fishing
 Adverse dietary impacts
 Beaver range ...
 Bangladesh: More than 17 million
people within 3 feet of sea level
 Tuvalu: Island nation, highest elevation
15 ft; mos...
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
global warming ppt
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global warming ppt

  1. 1. Index  Reasons of Global Warming  The Impact of global warming on the nature  Causes and Effects  What We Can Do
  2. 2. Solar energy passes through Radiant heat is trapped Greenhouse gases in atmosphere Reasons of Global Warming “Greenhouse gases” (e.g. carbon dioxide, methane, nitrous oxide, CFC’s) trap heat i n the earth’s atmosphere.
  3. 3. Burning carbon-containing fossil fuels produces carbon dioxide (Combustion) C + O2 CO2 CO2: The Most Significant Greenhouse Pollutant
  4. 4. CO2 + H20 HCO3 - + H+ Water becomes more acidic. (ACID) Remains in the atmosphere (greenhouse gas) Dissolves in sea water CO2 CO2 “The surface ocean currently absorbs about one-fourth of the CO2 emitted to the atmosphere from human activities.”
  5. 5. 1.8 1.4 1.1 0.7 0.4 0 -0.4 -0.7 -1.1 GlobalTemperatureChange(degF) Year1000 1200 1400 1600 1800 2000 380 360 340 320 300 280 CO2Concentration(ppm) 1000 Years of CO2 and Global Temperature Change Temperature CO2  Humans have increased carbon dioxide (CO2) in the atmosphere by more than 37% since the Industrial Revolution.
  6. 6. The Arctic Ocean could be ice-free in summer by 2040 -according to U.S. National Center for Atmospheric Research 2000 2040
  7. 7. “Climate change is the m ost severe problem that we are facing today.” “And it’s reason is nothing but the GLOBAL WARMING”
  8. 8.  Melting ice, glaciers and permafrost  Animals  Wetlands and forests  Weather and storms  People and culture 1958 2003
  9. 9. “A warming climate will damage Alaska’s infrastructure because it was designed for a cold climate.”  Damage to infrastructure may add $3.6 to $6.1 billion (10% to 20%) to future costs for public infrastructure from now to 2030 and $5.6 to $7.6 billion (10% to 12%) from now to 2080
  10. 10.  Oyster contamination in summer of 2004  Hazardous travel, hunting and fishing  Adverse dietary impacts  Beaver range expanding  Health damage from fires -- respiratory illnesses, especially in elderly, children  Water and sewer failures  West Nile virus, Lyme disease threats
  11. 11.  Bangladesh: More than 17 million people within 3 feet of sea level  Tuvalu: Island nation, highest elevation 15 ft; mostly less than 1m  Lohachara: First inhabited island (10,000 people) submerged Bangladesh Tuvalu Lohachara

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