Hi All
It is good to have the correct attributions to wise statements but the
main point of my reply to James was the attempt to get comments and help
for small experiments which he had said could not be done. It is odd to
say that our ignorance of a subject is a justification for NOT doing
research on it.
Stephen
Emeritus Professor of Engineering Design
Institute for Energy Systems
School of Engineering
Mayfield Road
University of Edinburgh EH9 3JL
Scotland
Tel +44 131 650 5704
Mobile 07795 203 195
www.see.ed.ac.uk/~shs
On 25/09/2010 22:17, James R. Fleming wrote:
Colleagues:
Stephen Salter wrote: /Ken has pointed out that we are already
carrying out an dangerous planetary test which we do not understand.
Lowell says that we started it thousands of years ago./
I believe the proper attribution for these ideas are not Caldeira and
Wood but a combination of Glbert Plass and Roger Revelle and Hans
Suess for the first and William Ruddiman for the second.
"If at the end of this century, measurements show that the carbon
dioxide content of the atmosphere has risen appreciably and at the
same time the temperature has continued to rise throughout the
world, it will be firmly established that carbon dioxide is an
important factor in causing climatic change" -- Gilbert Plass (1956).
"Human beings are now carrying out a large scale geophysical
experiment of a kind that could not have happened in the past nor
be reproduced in the future. Within a few centuries we are
returning to the atmosphere and oceans the concentrated organic
carbon stored in sedimentary rocks over hundreds of millions of
years. This experiment, if adequately documented, may yield a
far-reaching insight into the processes determining weather and
climate" -- REvelle and Suess (1957).
"The hypothesis (Ruddiman, 2003
<http://courses.eas.ualberta.ca/eas457/Ruddiman2003.pdf>
<http://courses.eas.ualberta.ca/eas457/Ruddiman2003.pdf%3E>) that
early agriculture caused large enough emissions of greenhouse
gases millennia ago to offset a natural climatic cooling remains
controversial" -- Ruddiman.
Also, there is no doubt that clouds can be brightened (by ships
tracks, etc.), but is this a climate test? Do you know that in 1947
Kathleen Blodget at General Electric told Irving Langmiur that
intervening in a cloud was something much different than "controlling
the weather?" Seems to have fallen on Langmuir's deaf ears.
Jim Fleming --
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