Reply #20: nonsense

[greenman3610]

The "Global Cooling in the 70s" is one of the most
easily debunked and intellectually lazy denial soundbites.
Sorry, poster, but this isn't even a nice try, it's just bullshit.

President Johnson's science advisory panel in 1965 -
“Man is unwittingly conducting a vast geophysical experiment....”, emissions by the year 2000 could be enough to cause “measurable and perhaps marked” climate change.

The article you post is a distortion of a distortion of an ambiguous
National Academy study published in 1975, of which I have a copy.
It states:
“The onset of (cooling)..could be several thousand years in the future, although there is a finite possibility that a serious worldwide cooling could befall the earth within the next 100 years.”
and then, 2 paragraphs later:
“A leading .... effect is the enrichment of the atmospheric CO2 content by the combustion of fossil fuels, ... Such effects may combine .... to offset a future natural cooling trend, or to enhance a natural warming.”

Jimmy Carter's Global 2000, a distillation of available environmental science in
1977:
“Another environmental problem related to the combustion of fossil fuels....is the increasing concentration of carbon dioxide in the earth's atmosphere. Rising CO2 concentrations are of concern because of their potential for causing a warming of the earth.
...a doubling of the CO2 content of the atmosphere could be expected after the middle of the next century; .....the result could be...,a 2 -3 C° rise in temperatures in the middle latitudes of the earth. Agriculture and other human endeavors would have agreat difficulty in adapting to such large, rapid changes in climate.”

The National Academy of Science "Charney Report", 1979,
a meta study of all available 1970s climate info:
"If Carbon dioxide continues to increase, the study group finds no reason to doubt that climate changes will result, and no reason to believe that these changes will be negligible....A “wait and see policy may mean waiting until it is too late..”

What predictions existed about cooling in the 70s were based on the idea that atmospheric
particulates would continue to increase, blocking the sun. They
didn't increase, they decreased.
Moreover, early 70s concepts of the timing mechanism of the ice ages were not
as sophisticated as today. A key study published in 1976 made a strong case for the
current view, which is that ice ages are timed by changes in the orbital shape and
axial tilt of planet earth relative to the sun.

http://www.skepticalscience.com/What-1970s-science-said-about-global-cooling.html
http://www.usatoday.com/tech/science/environment/2008-02-20-global-cooling_N.htm

But Thomas Peterson of the National Climatic Data Center surveyed dozens of peer-reviewed scientific articles from 1965 to 1979 and found that only seven supported global cooling, while 44 predicted warming. Peterson says 20 others were neutral in their assessments of climate trends.