In 1976, NCAR director Steven Schneider was warning of disastrous global cooling, and reported his frustration that Nixon didn’t believe him.
When Schneider realized that the global cooling scam wasn’t paying off, he switched to the global warming scam. In 1979 he predicted 15-25 feet of sea level rise by the year 2000.
Kevin Trenberth is simply carrying on a long tradition of creating science fiction at NCAR, used to keep blackmailing politicians in Washington DC.
We have end of the world cultists pretending to be scientists and robbing us blind in the process. None of their past predictions have come remotely close to verifying in the real world, so why would anyone take them seriously?
They do have a track record. If they were financial advisors, they would be sitting out on some skid row street corner with hat in hand.
ATMOSPHERIC CARBON DIOXIDE AND AEROSOLS:
Effects of Large Increases on Global Climate.
Abstract.
Effects on the global temperature of large increases in carbon dioxide and aerosol densities in the atmosphere of Earth have been computed. It is found that, although the addition of carbon dioxide in the atmosphere does increase the surface temperature, the rate of temperature increase diminishes with increasing carbon dioxide in the atmosphere. For aerosols, however, the net effect of increase in density is to reduce the surface temperature of Earth. Becuase of the exponential dependence of the backscattering, the rate of temperature decrease is augmented with increasing aerosol content. An increase by only a factor of 4 in global aerosol background concentration may be sufficient to reduce the surface temperature by as much as 3.5 deg.K. If sustained over a period of several years, such a temperature decrease over the whole globe is believed to be sufficient to trigger an ice age.
The rate at which human activities may be inadvertently modifying the climate of Earth has become a problem of serious concern . In the last few decades the concentration of CO2 in the atmosphere appears to have increased by 7 percent . During the same period, the aerosol content of the lower atmosphere may have been augmented by as much as 100 percent .
How have these changes in the composition of the atmosphere affected the climate of the globe? More importantly, is it possible that a continued increase in the CO2 and dust content of the atmosphere at the present rate will produce such large-scale effects on the global temperature that the process may run away, with the planet Earth eventually becoming as hot as Venus (700 deg. K.) or as cold as Mars (230 deg. K.)?
We report here on the first results of a calculation in which separate estimates were made of the effects on global temperature of large increases in the amount of CO2 and dust in the atmosphere. It is found that even an increase by a factor of 8 in the amount of CO2, which is highly unlikely in the next several thousand years, will produce an increase in the surface temperature of less than 2 deg. K.
However, the effect on surface temperature of an increase in the aerosol content of the atmosphere is found to be quite significant. An increase by a factor of 4 in the equilibrium dust concentration in the global atmosphere, which cannot be ruled out as a possibility within the next century, could decrease the mean surface temperature by as much as 3.5 deg. K. If sustained over a period of several years, such a temperature decrease could be sufficient to trigger an ice age!
Schneider S. & Rasool S., “Atmospheric Carbon Dioxide and Aerosols – Effects of Large Increases on Global Climate”, Science, vol.173, 9 July 1971, p.138-141
Those results were bases on a climate model developed by none other than James Hansen, incidentally.
“It doesn’t matter what is true, it only matters what people believe is true.” -Paul Watson, Greenpeace
“We have to offer up scary scenarios… each of us has to decide the right balance between being effective and being honest.” -Stephen Schneider, lead ipcc author, 1989
“Unless we announce disasters no one will listen.” -Sir John Houghton, first ipcc chair
“The only way to get our society to truly change is to frighten people with the possibility of a catastrophe.” -Daniel Botkin, ex Chair of Environmental Studies, UCSB
“We’ve got to ride the global warming issue. Even if the theory of global warming is wrong, we will be doing the right thing.” -leftist Senator Tim Wirth, 1993
Reblogged this on Climate Collections and commented:
NCAR director Steven Schneider’s inconsistent advice. His research initially shows little impact of CO2. He fails to scare Nixon into action. Three years later, he switches to the opposite extreme warning of warming.