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Good Morning Ladies and Gentlemen,
I’m Chairman for this session.
I’m a Mechanical Engineer by training. I was educated at the University of Alberta and New Mexico State University.
I was employed by Atomic Energy of Canada
for some 26 years before retiring from
full time work in 2000. I did continue to represent the nuclear industry on the Technology Issue Table and
Integrative Group of the National Climate
Change Process till that came to an end
about 2003. I found that very
interesting and gained much insight
to the role and interests of many industries and environmental groups.
in atmospheric greenhouse gases have been measured.
Evidence suggests climate has changed during the 20th century and will continue to change.
Climate change could affect
humans and natural ecosystems.
prudence implies that possible remedial action be reviewed, despite uncertainties.
In anticipation of policy development we postulate that climate
must be controlled. Lets make that
assumption and move forward to consider how that might be done.
diffidently propose that we limit greenhouse gas emissions by improving energy efficiency and conserving fossil
fuel resources. That is a good thing, but
experience tells us this approach will not
It is a
fundamental creed of engineers to improve the efficiency of their processes and machines. Efficiency has improved
immensely since our use of fossil
fuel began in earnest some 200 years
ago. Indeed heat engines have gone from
some 1% efficiency then to the near
perfection of combined cycle power plants today.
The resultant expanded use of energy has
escalated overall emissions. Jevons
documented this aspect of energy use in a free society back in 1865 and it is sometimes referred to as Jevons paradox..
This phenomena is so well known that it is hard
to understand the emphasis placed on
efficiency and conservation in plans to manage greenhouse gases.
suggest we address more directly the
problem of global warning and propose
solutions on a more fundamental basis.
Some address greenhouse gas management through a broader focus on the carbon cycle. That opens up more
opportunities for control than simply
reducing emissions from fossil fuels.
Others bypass greenhouse gas mangement
altogether, and seek to modify heat
transfer to or from earth’s surface.
These solutions also offer the promise of
climate control should it turn out greenhouse
gases do not have as much effect as currently
thought by many.
This session will consider some of those proposed
solutions. It seems many will require
engineering on a global scale.
example of such proposals, we do know we can make clouds. I’ve noticed when flying across the prairies
these vapor trails cast strong shadows on
the ground. Clouds are an important component of climate change models – particularly those
that attempt to evaluate the role of
Stephen Salter proposed a related paper for this session. Unfortunately he could not attend. I see it is now
posted on a website in the UK.
The system he is working on proposes to spray salt water into the atmosphere to increase cloud formation and reflect
We have four papers in this session.
The carbon cycle which uses solar energy to
circulate carbon dioxide and methane
through the atmosphere provides many ideas for
greenhouse gas mangement. I will present a review.
William Mills of Tetra Tech will review the
rationale and approach for some mega-
engineered systems which can adapt to
global warming or cooling.
Mark Jaccard will tell us how engineered systems
can mange fossil fuel greenhouse
Doug Lightfoot will explain how sufficient
nuclear fission energy can be made
available to supply our needs