Professor Ian Clark just does not see any evidence of oil sands contributing to global warming. That’s quite a stand to take in the face of a global environmental community that considers the development of the Canadian heavy oil industry tantamount to hastening the end of the world.
But Prof. Clark can claim to know a bit more about the science behind
climate change than the average person. As a professor in the
Department of Earth Sciences at the University of Ottawa, he focuses on
paleoclimatology — the study of changes in climate taken on the scale of
the entire history of earth — and isotope hydrology, which determines
the age of ice or snow, which can help indicate climate conditions in
the past.
Last December, the professor testified before the Senate Standing
Committee on Energy, The Environment, and Natural Resources, where he
explained that our planet is experiencing global warming after 400 years
of a cold period which he termed “the little ice age.” [Watch the video
here.]
“Our efforts to limit the use of fossil carbon-based energy has
solved no environmental problems, yet has created many more, including
the accelerated production of ethanol and the conversion of tropical
rainforest to tropical palm oil production,” Prof. Clark told the
committee. “It is time to address real, tangible environmental issues.”
In an emailed interview with Financial Post, Prof. Clark
explains why the environmentalists “have lost their way” and why NASA
scientist James Hansen and former U.S. Vice-President Al Gore are plain
wrong.
Q: Could you elaborate on the theory that Co2 emissions lag the climate by 800 years.
A: During the ice ages, there is a very clear correlation between the concentration of CO2 and temperature. This is well demonstrated by ice core research, where ice cores have been collected that provide a continuous record of the past several hundred years.
A: During the ice ages, there is a very clear correlation between the concentration of CO2 and temperature. This is well demonstrated by ice core research, where ice cores have been collected that provide a continuous record of the past several hundred years.
During that time, temperature fluctuates by several degrees, and CO2
fluctuates between about 280 ppm during the interglacial periods (like
today, except we have higher levels due to human emissions) and 180 ppm
during glacial periods.
Former U.S. Vice-President Al Gore showed this strong correlation and
misrepresented it as showing CO2 warms the climate. The reverse is
true. As the temperature rises for external reasons (solar and Earth
orbital parameters) the deep ocean basins (Southern Ocean mainly) begin
to warm and degas CO2 to the atmosphere (CO2 is less soluble in warmer
water).
However, the rise in CO2 lags the rise in temperature by about 800
years. This shows that CO2 does not play a role in the warming, and even
a reinforcing role must be minor considering the lag. When the climate
starts to cool, CO2 remains high, again for hundreds of years, and so
plays no role in sustaining the warm climate, as the climate cools
despite the high CO2.
No comments:
Post a Comment