Climate-change skeptics frequently bring up a 40-year-old story
about climate change — a fleeting notion that the Earth was
cooling.
Talking about that story, which was picked up by Newsweek and
other publications, serves as a roundabout way for skeptics to
ridicule the science of global warming, suggesting that scientists
have never been able to get their story straight.
But the idea of global cooling failed to stand up to scientific
scrutiny, and the whole idea of global cooling soon
disappeared.
Now is the time to put that old story to rest, writes Peter
Dykstra, publisher of the nonprofit Environmental Health Sciences,
in a guest blog published on the
Scientific American website.
“Rush Limbaugh is a frequent flyer on the Newsweek story, making
the common error of promoting it to a ‘cover story.’” Peter writes,
noting that it was a single-page, nine-paragraph piece on page
64.
“Lawrence Solomon, a kingpin of Canadian climate denial, added a
new twist two years ago, claiming that the global cooling theory
was growing to ‘scientific consensus,’” Peter said. “Yet the
American Meteorological Society published a 2008 paper, which
reported that even in the theory’s heyday, published papers
suggesting a warming trend dominated by about six to one.”
Peter goes on to describe how various people have used the story
to sew seeds of doubt about today’s leading climate-change
findings.
“Science, in particular, moves on as it becomes more
sophisticated,” he said. “The scientific community stopped talking
about global cooling three decades ago. It’s time to retire this
long-dismissed theory as an anti-science talking point.”
Peter’s blog includes a photograph of the old Newsweek story
from April 28,1975, so I enlarged it and read what it actually
said. Some excepts:
- “In England, farmers have seen their growing season decline by
about two weeks since 1950, with a resultant overall loss in grain
production… During the same time, the average temperature around
the equator has risen by a fraction of a degree – a fraction that
in some areas can mean drought and desolation.”
- “Last April, in the most devastating outbreak of tornadoes ever
recorded, 145 twisters killed more than 300 people and caused half
a billion dollars worth of damage in thirteen U.S. states.”
- “To scientists, these seemingly disparate incidents represent
the advance signs of fundamental changes in the world’s
weather.”
- “’Our knowledge of the mechanisms of climatic change is at
least as fragmentary as our data,’ concedes the National Academy of
Sciences report. ‘Not only are the basic scientific questions
largely unanswered, but in many cases we do not yet know enough to
pose the key questions.’”
- “Climatologists are pessimistic that political leaders will
take any positive action to compensate for the climatic change or
even to allay its effects. They concede that some of the more
spectacular solutions proposed, such as melting the polar ice cap
by covering it with black soot or diverting arctic rivers, might
create problems far greater than those they solve.”
Ironically, current research predicts that we will see
increasing weather anomalies as a result of climate change. Studies
also show that soot is unintentionally landing on the polar ice
caps, melting them even faster. On the other hand, thousands of
studies have now documented the warming trends in correlation with
an increase in greenhouse gases.
If anyone doubts the level of climate-change research taking
place, take a look at “Science Daily,” a website that
compiles reports on all kinds of studies. The category
“Climate” includes just a portion of the climate research
underway throughout the world.
In a related development on climate change, a group of 28
Washington scientists wrote a
letter to the Legislature (PDF 110 kb), saying our state is
already feeling the effects of climate change:
“We must adapt to the inevitable impacts of a changing climate
by investing in communities to make them more prepared for the
current impacts and future risks of climate change. At the same
time, Washington must also take appropriate steps to reduce
heat-trapping emissions that would cause much more devastating
consequences in the decades to come…
“We ask that you implement a policy that establishes a price on
greenhouse gas emissions to encourage a shift to clean energy
solutions and drive low-carbon innovation that will foster the
clean industries of the future…
“The emissions choices we make today — in Washington and
throughout the world — will shape the planet our children and
grandchildren inherit. Please help create a cleaner, safer, and
healthier future for Washington. Let this be our legacy.”
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