Here is the latest carefully selected data from the Idsos.

http://www.co2science.org/ushcn/stationoftheweek.htm
************************************************** ***********
* USHCN Temperature Record of the Week: Pennsylvania
*
* 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 Erie,
* Pennsylvania. During the period of most significant
* greenhouse gas buildup over the past century, i.e., 1930
* and onward, Erie's mean annual temperature has cooled by
* 0.14 degrees Fahrenheit. Not much global warming here!
************************************************** *********

Erie, PA, 42.08N, 80.18W, elevation 223m

Annual trend = -0.020 deg F/dec, 71 yrs of 71 yrs possible

Winter trend = -0.026 deg F/dec, 71 yrs
Spring trend = +0.194 deg F/dec, 71 yrs
Summer trend = -0.112 deg F/dec, 71 yrs
Fall trend = -0.096 deg F/dec, 71 yrs

The station history file shows that this station was operated by
the U.S. Weather Bureau thruout the entire period of 1930 to
1995. Also, the history shows that the station was located in
Erie from 1930 until 1940, when it was moved about 5 miles out to
the airport. The move in 1941 placed the station at an elevation
about 80 feet higher. The time of day of observation was always
midnight, which may indicate hourly readings.

The instruments were first located at the usual 5 feet above the
ground, but, in 1960, the instruments were moved to an elevation
about 25 feet above ground level, perhaps associated with the
tower of the airport. In 1981, the instrument was relocated to
an elevation about 10 feet above ground. At the same time, a
automatic recording temperature instrument was introduced.

The slight cooling seen in the record may have been the result of
a combination of influences, such as the reverse Urban Heat
Island in the move from town to the airport, with the elevation
change. Moving the instrument to the higher tower location would
also be expected to produce a cooling bias. It is my understanding
that the automated instruments tend to produce a cooler reading,
perhaps due to the different type of shelter associated with this
system.

Once again, the Idsos data does not support their conclusion, IMHO.

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