Chicago PM Wednesday 1 August 2012
Editors, Voice of the People Chicago Tribune
Gentlepeople:
A Tribune article “Ex-skeptic now says people cause
climate change“ [Tuesday 31 July 2012] says a
Climate scientist, formerly a climate change
unbeliever, is finally admitting that “global warming
is, in fact, occurring and emissions of greenhouse
gases caused by human activity are the main cause.”
He made this decision after an “intensive research
effort involving a dozen scientists” determined that
“the average temperature of the earth's land has risen
by two and a half degrees Fahrenheit over the past
250 years, including an increase of one and a half
degrees over the most recent 50 years.”
Have any climate scientists ever described how they
can determine the “average temperature of the earth's
land”? Wouldn't they need at least one thermometer
in every square mile of all 57,500,000 square miles
the planet's land area? Did they have them installed
50 years ago? 250 years ago?
Aren't all these climate change predictions based on
computer models built by climate scientists around
the world over the past few decades? What is never
admitted is the pathetically small set of past data
there is to work with. This is demonstrated by a
model projecting the planet's 4.5 billion year age on
an 80-year human lifetime. Such a model shows one
year of earth time equivalent of 0.562 seconds of an
80-year human life span. This means humans first
appeared in our model earth 39 days ago. They had
no idea of measuring temperature before Galileo's
1593 thermometer invention, 4 minutes ago to our
senior citizen., Discovery of carbon dioxide in 1630?
3 minutes 30 seconds ago. The 250 years quoted by
the skeptic is 140 seconds in the geezer model. Fifty
years is 28 seconds.
If a doctor took a senior citizen's blood pressure and
got 120 over 80, took a second reading 5 minutes
later and got 124 over 78, would she call an
ambulance?
Arnold H Nelson ah_nelson@yahoo.com
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