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GLOBAL WARMING. aka: “Climate Change” aka: “The Greenhouse Effect”. Also referred to as : ‘A CAR WITH THE WINDOWS ROLLED UP ON A SUNNY SUMMER DAY’ EFFECT. Greenhouse Effect. Graphic courtesy of SEI Combat Climate Change.

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global warming

GLOBAL WARMING

aka: “Climate Change” aka: “The Greenhouse Effect”

greenhouse effect
Greenhouse Effect

Graphic courtesy of SEI Combat Climate Change

slide4
1. LIGHT enters the atmosphere 2. Light is CONVERTED TO HEAT when it strikes certain surfaces 3. SOME OF THIS HEAT is trapped by gases
is global warming real
IS GLOBAL WARMING REAL?
  • YES
  • ALL MAJOR SCIENTIFIC STUDIES AGREE THAT HUMANS ARE CAUSING CARBON DIOXIDE TO INCREASE AND THAT TEMPERATURES HAVE GONE UP
slide7
AT MINIMUM THERE IS A STRONG CORRELATION BETWEEN CARBON DIOXIDE AND TEMPERATURE … IF NOT AN ACTUAL CAUSE AND EFFECT RELATIONSHIP
complicated
COMPLICATED

VARIABLES INCLUDE

  • CLOUD FORMATION
  • ICE MELT RATES
  • OCEAN CIRCULATION PATTERNS
  • OCEAN CHEMISTRY
  • CHANGES IN VEGETATION
  • SEA LEVELS
  • AND MANY OTHER FACTORS.
g h g
G.H.G.
  • GREEN-HOUSE GASES
  • CARBON DIOXIDE(CO2)– created by the burning of fossil fuels and the burning of forests
  • METHANE – (CH4 - Flatulence) result of raising animals for food
  • C.F.C.’S, NITROUS OXIDESANDWATER VAPOR
levels of co 2 from 1958 to present
Levels of CO2 from 1958 to Present

(Image courtesy of the Wikimedia Commons, data provided by the U.S. Department of Energy.)

carbon dioxide
CARBON DIOXIDE
  • FLUCTUATES UP AND DOWN EACH YEAR.
  • Low in summer while plants in Northern Hemisphere were active growing and taking CO2 out of the air / high in winter when plants dormant and fossil fuels burned more for heat
carbon dioxide1
CARBON DIOXIDE
  • OVERALL INCREASES FROM YEAR TO YEAR
  • 1958 315 PARTS PER MILLION (PPM)
  • 2000 368 PPM
  • INCREASE CAUSED BY BURNING OF FOSSIL FUELS AND DEFORESTATION
deforestation
Causes 25-30% of yearly Carbon DioxideDeforestation

Changing land use from forestry to a non-forest use by the burning and cutting of about 34 million acres of trees each year.

cfc s
CFC’S
  • CHLORO FLUORO CARBONS
  • IN PAST WHERE FOUND IN REFRIGERANTS, AEROSOLS AND STYROFOAM
  • TODAY ARE NO LONGER MADE – BUT SOME ARE STILL IN PRODUCTS MADE BEFORE 1990
cfc s1
CFC’S
  • TRAP HEAT – CONTRIBUTE TO GLOBAL WARMING
  • LARGER PROBLEM - THEY DESTROY OZONE WHICH PROTECTS US FROM THE ULTRAVIOLET RADIATION OF THE SUN WHICH CAN CAUSE SKIN CANCER
why worry
WHY WORRY??
  • CHANGE IN CLIMATE PATTERNS
  • RESULTS IN DROUGHTS AND HEAT WAVES
  • COULD EFFECT FOOD PRODUCTION
  • POSSIBLE FLOODING OF SOME COASTAL AREAS
  • SPREAD OF CERTAIN DISEASES
effects on life
Effects on life

Figure 2. This picture was obtained from research found on www.absc.usgs.gov

  • Phytoplankton growth
    • Ocean stratification
    • Contribute to global warming
    • The food chain
  • Effects of climatic changes

on Arctic Plants

melting ice sheets
As ice melts, trapped CO2 released.

In Greenland earthquakes occur due to weight of ice disappearing

Melting Ice Sheets
glaciers
Glaciers
  • 20% reduction in size from 1962 – 2001 for 466 glaciers
  • Can mean flooding and then drought for regions near glaciers

Photos taken in 1913 (top) and 2005 (above) show the decline in Shepard Glacier in Montana's Glacier National Park.

severe weather
Severe Weather
  • Draught
  • wildfires
  • Floods
  • “Climate Change”
myths about global warming
Myths about global warming
  • Scientists don’t agree
  • Have to choose between economy and environment
  • Too big a problem for anyone to do anything about

THESE ARE ALL FALSE

why should the usa care
WHY SHOULD THE USA CARE?
  • WHILE WE REPRESENT ONLY 4% OF THE WORLD’S POPULATION – WE CREATE 22-36% OF THE WORLD’S G.H.G.
what is being done
WHAT IS BEING DONE?
  • KYOTO TREATY
  • CLIMATE ENGINEERING (cloud seeding, synthetic trees, etc.)
  • INDIVIDUAL EFFORTS
small everyday steps
Small, everyday steps:
  • Turn off lights
  • Switch to CFL’s (Compact Fluorescent Lightbulbs)
  • Unplug unused electronics
  • Car pool, walk, ride bike, take public transportation
  • Air dry clothes
  • Buy organic/local produce
  • Shorter showers
  • Plant trees
will we change
Will we change?

“It is not the strongest of the species that survive, nor the most intelligent, but the ones most responsive to change.“

- Charles Darwin

individual efforts
INDIVIDUAL EFFORTS
  • REDUCE USE OF OIL and COAL MADE ELECTRICITY
  • RECYCLING
  • PLANTING OF TREES