<a href="http://www.theregister.co.uk/2009/01/28/nasa_climate_theon/">http://www.theregister.co.uk/2009/01/28/nasa_climate_theon/</a><br><br><<<b>I'm a sceptic now, says ex-NASA climate boss</b><p class="standfirst">
<i>Hansen supervisor takes aim at thermageddon</i></p>
<p class="byline">By <a href="mailto:andrew.orlowski@theregister.co.uk" title="Send email to the author">Andrew Orlowski</a> • <a href="http://search.theregister.co.uk/?author=Andrew%20Orlowski" class="more-by-author" title="More stories on this site by Andrew Orlowski">Get more from this author</a></p>
<div id="body"><p>The retired scientist formerly in charge of key NASA climate programs has come out as a sceptic.</p>
<p>Dr John Theon, who supervised James Hansen - the activist-scientist
who helped give the manmade global warming hypothesis centre prominent
media attention - repents at length in a published letter. Theon wrote
to the Minority Office at the Environment and Public Works Committee on
January 15, 2009, and excerpts were published by skeptic Senator
Inhofe's office <a href="http://epw.senate.gov/public/index.cfm?FuseAction=Minority.Blogs&ContentRecord_id=1a5e6e32-802a-23ad-40ed-ecd53cd3d320" target="_blank">here</a> last night.</p>
<p>"As Chief of several of NASA Headquarters' programs (1982-94), an
SES position, I was responsible for all weather and climate research in
the entire agency, including the research work by James Hansen, Roy
Spencer, Joanne Simpson, and several hundred other scientists at NASA
field centers, in academia, and in the private sector who worked on
climate research," Theon wrote. "I appreciate the opportunity to add my
name to those who disagree that global warming is man made."</p>
<p>Theon takes aim at the models, and implicitly criticises Hansen for revising to the data set:</p>
<p>"My own belief concerning anthropogenic climate change is that the
models do not realistically simulate the climate system because there
are many very important sub-grid scale processes that the models either
replicate poorly or completely omit. Furthermore, some scientists have
manipulated the observed data to justify their model results. In doing
so, they neither explain what they have modified in the observations,
nor explain how they did it.</p>
<p>"They have resisted making their work transparent so that it can be
replicated independently by other scientists. This is clearly contrary
to how science should be done. Thus there is no rational justification
for using climate model forecasts to determine public policy."</p>
<p>Hansen is in charge of the GISS data set, derived from readings
published by NOAA. The GISS adjustment have received criticism (a
potted summary <a href="http://www.theregister.co.uk/2008/11/19/nasa_giss_cockup_catalog/print.html">here</a>) for revising the historic record in an upward direction - and making undocumented and unexplained revisions.</p>
<p>Theon also takes issue with Hansen's claim that he was suppressed by
NASA officialdom, and states that the science didn't support Hansen's
increasingly apocalyptic warnings of an imminent thermageddon.</p>
<p>"Hansen was never muzzled even though he violated NASA's official
agency position on climate forecasting (i.e., we did not know enough to
forecast climate change or mankind's effect on it). Hansen thus
embarrassed NASA by coming out with his claims of global warming in
1988 in his testimony before Congress."</p>
<p>Hansen has called for energy industry executives to be jailed for dissenting from the man-made warming hypothesis. ®>></p>
</div><br>-- <br>Stefano Vaj<br><br>