Transcript Global Warming - pps

Global Warming
And Profitable
Convenient Misdirection
An Inconvenient Truth………..
During Last 150 Years, Temperature Tracks CO2 ….
On this scale, CO2 appears to lead Temperature ... There must be some relationship!!
CO2 Data from Ice Cores
CO2 Data from
direct measurement
(Maunlua, Hawaii)
A Similar Relationship exists over 450,000 years.
It seams reasonable to conclude that CO2 build-up causes Global Warming!!
BUT …….. Expand the “150 Year” chart to cover 1000 years
Now the relationship is no longer clear……Temperature does not track CO2!!
Temperature Precedes CO2
Peak 400 years ago ….
• Higher and steeper than last
150 years!!
• Clearly unrelated to CO2
levels which were constant.
Zero in the “450,000 Year” chart to 150,000 years
Note that Temperature often Precedes CO2. Unlikely that CO2 is causing Temp Increase
Temperature Precedes CO2
Normal Temperature Variation over last 10,000 years.
Average Temperature is highly variable. Highs and Lows are normal.
Present Upward Trend is NOT an
Unusual nor Unexpected Event !!!
CO2 has minimal impact on “Global Warming” Effect.
Water Vapor has major impact.
Many other factors are in
play!!
•
Considered by many to be a
mitigator. (I.e. increase humidity
increases cloud cover and reduces
greenhouse effect
CO2 has relatively small
impact
Global Warming
The Facts are………..
– It is clear that humans are responsible for an increase in CO2
levels. BUT there is no clear or demonstrable “cause and effect”
link between CO2 level and global temperature.
– Global temperatures will fluctuate with or without us. Always
have, always will.
– Any “Human” effect will be additive to an already established
temperature increase. There is no clear evidence as to the
magnitude of that increase, but it is definitely small.
– Environmental causes are big business…..with very large profits.
Nobody pays for studies or donates to organizations that report
the facts without some angle that the “sky is falling”. The real
truth is boring!!