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J. Clarke[_2_]

In article , says...

On Sun, 05 Jun 2011 20:44:13 -0500, Martin Eastburn wrote:

Yea I remember when the data was exposed. One measuring station was on
top of a building next to an exhaust vent. The vent was hot.

Reference?

That would have likely been Anthony Watts' "surfacestations.org" site
which is down at the moment (whether it's down temporarily or has been
shut down permanently I have no idea).

He found a number of stations where the temperature sensor was near an
air conditioner, and many other discrepancies from NOAA's published
standards for temperature measurement. He included photographs of the
stations and other information, so you can make your own determination
of whether there might be a problem, he didn't expect you to take his
word for it.

He's not the only one to question the quality of the data though.

The simple fact is that we don't know whether the percieved "warming" is
real or an artifact of instrumentation error.

NOAA recognized this as early as 2002 when they published a new set of
standards for temperature measurement. However those new standards do
not help us figure out whether older data is erroneous.