Here we have another of the Idso clan's weekly efforts at
cherry picking the raw USHCN data.

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http://www.co2science.org/ushcn/stationoftheweek.htm

* USHCN Temperature Record of the Week: Bowling Green, Missouri
*
* To bolster our claim that "There Has Been No Net Global
* Warming for the Past 70 Years," each week we highlight
* the temperature record of one of the 1221 U.S.
* Historical Climatology Network (USHCN) stations from
* 1930-2000.

* This issue's temperature record of the week is from
* Bowling Green, Missouri. During the period of most
* significant greenhouse gas buildup over the past
* century, i.e., 1930 and onward, Bowling Green's mean
* annual temperature has cooled by 1.75 degrees
* Fahrenheit. Not much global warming here!
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For starters, consider that the Idsos' data set contains
only 60 years of data out of a possible 71. Missing are the
years: 1933, 59, 67, 77, 81, 82, 83, 88, 96, 99 and 2000.
As on previous occasions, there are more missing years in
the last half of the period than the first. Out of 11
missing, 7 are after 1980, including 1988, when there was a
strong drought which reduced the flow in the Missouri and
Mississippi to a trickle. One finds that the winter season
has 68 years of data with a cooling trend of -0.25 deg
F/decade and is dominated by the very cold winters of 1978
and 1979. The summer season series also has 68 years with a
cooling trend of -0.39 deg F/decade and is dominated by very
warm years in 1934 and 1936.

Bowling Green, MO is a small town in a rural area north of
St. Louis. From the station history, The observing station
was located at a nursery, beginning in 1928, continuing
there until 1973. The observation time is given as 6 PM for
most of those years. The location is given as 39:26 N,
91:04 W. The next location was a radio station, beginning
in 1973 and continuing to the present. The location is
given as 39:22 N, 91:11 W. That move appears to have been
about 8 miles from another town called Louisiana, which is
located next to the Missouri River at an elevation of 469
feet. Louisiana was built along a narrow hollow surrounded
by high bluffs. The nursery was likely located along the
relatively flat bottom of the hollow, although I did not
find an exact location. The move placed the station near a
radio tower seen NE of the town on the U.S.G.S. topo maps.
There is an elevation gain shown, with the second station
being at 710 feet. The observation time is given as 8 AM.

For this data set, just the change in elevation would cause
a cooling. Coupled with the change from evening to morning
observation time, which would also induce a cooling trend,
one can easily understand why the record would produce an
overall cooling trend, which could mask any warming trend in
the general area. Not to mention the shortened data set...
Again, it looks like another hatchet job, IMHO.

--
Eric Swanson --- E-mail address: e_swanson(at)skybest.com :-)
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