The Idsos are at it again, posting another piece of RAW
USHCN data they cherry picked to "prove" that there's no
warming underway.

http://www.co2science.org/ushcn/stationoftheweek.htm
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* USHCN Temperature Record of the Week: Fort Sumner, New
* Mexico
*
* 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 Fort
* Sumner, New Mexico. During the period of most
* significant greenhouse gas buildup over the past
* century, i.e., 1930 and onward, Fort Sumner's mean
* annual temperature has cooled by 1.04 degrees F. Not
* much global warming here!
---

From their site, one finds the following:

Annual trend: -0.15 deg F/decade with 63 years of data.
Missing are the years 1937, 67, 71, 73, 74, 76, 96, and 2000.

Trends for other seasons"
Winter: +0.30 deg F/dec with 68 years data.
Spring; -0.03 deg F/dec with 69 years data
Summer: -0.52 deg F/dec with 67 years data
Fall: -0.18 deg F/dec with 68 years data

As usual, they start with 1930, in the midst of the big
drought event which came to be known as The Dust Bowl. Here
is a brief discussion about events next door in Texas.

http://freespace.virgin.net/john.cle...usa/dbowl2.htm

The station history thru 1995 indicates little movement of
the observation station, even though there were 6 different
observers during the period. The time of day that the
observation occurred was at sunset until 1959, then late
afternoon (7 PM or 5PM) between 1959 and 1966, then back to
a sunset observation until early 1976. Between February and
May 1976, there was no observer listed. From June, 1976
until the end of the history, the observation time was
shifted to 8 AM. The shift from late day observation to
early morning will produce a negative bias in the data.

According to the history record, there is a break in
observations between July 1944 and June 1945 and another
break shown between November 1945 and May 1946. This is most
curious, as the Idsos present data for all three years, even
though they claim that their processing eliminates years when
a month is deemed missing. One wonders where the Idsos
obtained their data.

So, the Idsos combined cherry picking with lack of concern
for the known time of day bias and found a cooling trend.
And, just maybe, they fudged the data...

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