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Naïve Science?
Nice to know that, according to
the latest issue of Science—the
official newsmagazine of our profession's Washington lobby,
the American Association for the Advancement of Science—
climate science has so far avoided the fraudulent behavior that
has cropped up in other "hot" areas where science intersects
policy.
At least that's the position of
Science editor Donald
Kennedy, who used to be president of Stanford University. The
reason for his seemingly downward mobility has to do with the
Feds getting mad about National Science Foundation funds (i.e.,
our tax dollars) being spent on Stanford's yacht and his
house. So he has some experience in this touchy area. Welcome to
Washington: give the appearance of bilking the government from
afar, resign rather than get canned, and welcome home.
Alas, though, experience may not
be a sufficient teacher. In an April 18 editorial, "Research
Fraud and Public Policy," Kennedy lamented the loss of
reproducible data in two social studies projects on gun control
and then opined that at least other politically hot sciences,
among them climatology, weren't subject to such shenanigans.
He wrote:
Other
sciences engage political passions just as hot as those in the
gun control controversy. For example, in analyzing the
relationship between atmospheric chemistry and the only climate
we have, we need solid scientific work.... So far, thankfully,
passion has not overtaken truth in the actual doing of science,
even in these hotly contested areas.
Oh, yeah? We consider passion to
have over- taken reason when scientists either don't share
their data or selectively use bits of it to paint a passionate,
if politically correct picture. Here are three examples that
might blow a bit of the bloom off Kennedy's science rose:
1995:
IPCC Scientists Withheld Data from Reviewers. In 1995, WCR
Chief Editor Patrick Michaels was a reviewer of the Second
Assessment Report of the United Nations' Intergovernmental
Panel on Climate Change (IPCC). One of the featured climate
models was produced by the United Kingdom Meteorological Office
(UKMO). A look at its output for early in the 21st century
suggested that it was predicting much more warming than had been
observed in recent decades in the high latitudes of the Northern
Hemisphere—a critical area for climate change since
substantial warming in this region reduces snowcover, which
accelerates warming further.
An email was sent to the UKMO
requesting intermediate output to see if, in fact, it was
gravely overestimating current high-latitude temperatures. On
May 11, 1995, head modeler John Mitchell replied that he "felt
it inappropriate to send [Michaels] gridpoint data at this
time." In response, Michaels reminded Mitchell that "Science
is a cooperative effort in which information should be freely
shared" and that the data requested was critical to a proper
review of the IPCC report. (Mitchell, incidentally, was a senior
author of the IPCC chapter on climate models.)
After failing there, Michaels
sent five separate inquiries to the IPCC. Yet the model output
was never forthcoming.
Years later, perhaps we know why.
Another Met Office scientist, Myles Allen, adjusted their model
with observed data and the resultant projection of warming for
the next 50 years dropped to precisely the value WCR has always
proffered: a mere 0.75°C.
Anyone who wants to read more on
this should look at Michaels' testimony to the Subcommittee on
Energy and the Environment of the U.S. House of Representatives,
November 16, 1995.
1993:
Ozone Scare Based on "Forgotten" Data. Remember the big
splash 10 years ago, when two Canadian scientists, J.B. Kerr and
C.T. McElroy, reported that the intensity of burning solar
radiation had "increased by 35 percent per year in winter"?
Their study included only five years of data, ending in March
1993—oops, make that four. Winter 1991–1992 (which showed no
particularly high radiation readings) was not analyzed
"because the instrument was out of service." Wrongo. In
fact, the data were mislabeled in their Science
paper. When they were included, the maximum increase in
radiation dropped by 50 percent. What's worse, all of the
"significant" trend was induced by four days in March 1993
at the end of their record. That just happened to be the same
time as the "storm of the century," the deepest
extratropical low pressure ever measured in eastern North
America. It is well known that that phenomenon would disturb the
ozone profile.
Every scientist knows to be
careful about extreme values at the beginning or the end of an
analysis, because such values often create "significant"
trends that in fact are not real, once a longer data stream is
analyzed. But, in their "passion," both the authors and the
reviewers in, yes, Science
missed that point. Nor did they notice that there was actually a
lot of data in 1991–1992.
1996:
Selective Use of Climate Data for Political Effect. It was
no accident that Nature
published the biggest bombshell paper on climate change ever
written just a week before the United Nations was to meet in
Geneva to lay the groundwork for the atrocious Kyoto Protocol.
The paper, by Benjamin Santer and
just about every other big name in government climate science,
demonstrated a rather striking match between observed trends in
temperature from 5,000 to 30,000 feet and those predicted by
climate models that also projected dramatic warming for this
century. News of their article made the front page of every
newspaper worth reading and appeared on every major news
program.
The problem is, their match was
obtained using only data from between 1963 and 1988, yet data
from a longer period of record existed. Why did they select only
the 1963–1988 period? See Figure 1. We don't accept any
answer here but a clear attempt to paint a particular picture.
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Figure
1. Temperature history from a crucial portion of the
atmosphere, 1958–1995. For some reason, in the important
paper "demonstrating" climate change, Ben Santer and
colleagues only used the portion of the data circled here. |
As a final thought, we draw your
attention to the pull-quote from Kennedy's editorial in the
April 18 Science.
Though he was referring to gun data, which constituted
"social" science, we find it useful to substitute just one
word: "Sound [climate] science, not
cooked data, is what we need" (bold in original). Thus
amended, we couldn't agree more.
References:
Allen, M.R. et al., 2000.
Quantifying the uncertainty in forecasts of anthropogenic
climate change, Nature,
407,617–620.
Kennedy, 2003. Research fraud and
public policy, Science,
300, 393.
Kerr, J.B., and C.T. McElroy,
1993, Evidence for large upward trends of ultraviolet-B
radiation linked to ozone depletion, Science,
262, 1032–1034.
Michaels, P.J., F. Singer and
P.C. Knappenberger, 1994. Analyzing ultraviolet-B radiation: Is
there a trend, Science,
264, 1341–1342.
Michaels, P.J., and Knappenberger,
P.C., 1996. Human effect on global climate? Nature, 384, 522–523.
Michaels, P.J., 1995. Testimony
to the Subcommittee on Energy and the Environment, U.S. House of
Representatives, November 16.
Santer, B.D., et al, 1996. A
search for human influence on the thermal structure of the
atmosphere. Nature, 382, 39–46.
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