Hadley Centre Reviews SST Data
Dr. David Parker of the UK Met Office Hadley Centre, one of the global warming temples, is reported as saying that research into relationships between sea surface temperature (SST) and marine air temperature ( MAT)suggest that they may have been exaggerating the rate of global warming by 40%, see article at bottom of page.
David old son, sceptics have been saying for a decade that
your beloved SST's century long warming trend is not worth
the paper it is printed on !! The large corrections needed
are greater in magnitude than the trend produced.
If you do a survey of century long SST trends produced by various
research groups since say the 1970's, you find that the more
recent the research, the greater the warming, just
reflecting people producing findings to suit the IPCC dogmas.
This announcement by the Hadley Centre has to be seen for what it is, damage control.
The real story in global warming trends is the continued inclusion of thousands of urban heat island (UHI) affected stations in global data sets. A few months ago I told David and Chris Folland that their Central England Temperature (CET) trend contained serious UHI bias when compared to the S.W. Ireland Valentia Observatory. The same David Parker told me that SST numbers supported the CET trend !!
In a related email David told me that Gatwick Airport data was not suitable to include in compilations of global temperature trends.
David, I KNOW THAT !!
How about telling other people, for example Phillip Jones who uses Gatwick AP and thousands like it to do just what you say not to do.
Pasted below is the article from some UK "Telegraph"
site.
Several other articles with whining pro-warming attitude, as if
writers would rather be writing for the "New
Scientist".
Global warming
claims 'based on
false data'
By Robert Matthews
Research should not be dismissed by sceptics
Scientists' discoveries give lie to doom-monger
predictions
FRESH doubt has been cast on evidence for global
warming following the discovery that a key method of
measuring temperature change has exaggerated the
warming rate by almost 40 per cent.
Studies of temperature records dating back more than a
century have seemed to indicate a rise in global
temperature of around 0.5ĄC, with much of it occurring
since the late 1970s. This has led many scientists to
believe that global warming is under way, with the finger
of blame usually pointed at man-made pollution such as
carbon dioxide.
Now an international team of scientists, including
researchers from the Met Office in Bracknell, Berkshire,
has found serious discrepancies in these temperature
measurements, suggesting that the amount of global
warming is much less than previously believed.
The concern focuses on the temperature of the
atmosphere over the sea, which covers almost three
quarters of the Earth's surface. While scientists use
standard weather station instruments to detect warming
on land, they have been forced to rely on the crews of
ships to make measurements over the vast ocean
regions.
Crews have taken the temperature by dipping buckets
into the sea or using water flowing into the engine
intakes. Scientists have assumed that there is a simple
link between the temperature of seawater and that of the
air above it.
However, after analysing years of data from scientific
buoys in the Pacific that measure sea and air
temperatures simultaneously, the team has found no
evidence of a simple link. Instead, the seawater
measurements have exaggerated the amount of global
warming over the seas, with the real temperature having
risen less than half as fast during the 1970s than the
standard measurements suggest.
Reporting their findings in the influential journal
Geophysical Research Letters, the scientists say that the
exact cause of the discrepancy is not known. One
possibility is that the atmosphere responded faster than
the sea to cooling events such as volcanic eruptions.
The findings have major implications for the climate
change debate because the sea temperature
measurements are a key part of global warming
calculations. According to the team, replacing the
standard seawater data with the appropriate air data
produces a big cut in the overall global warming rate
during the last 20 years, from around 0.18ĄC per
decade to 0.13ĄC.
This suggests that the widely-quoted global warming
figure used to persuade governments to take action over
greenhouse gases exaggerates the true warming rate by
almost 40 per cent. The team is now calling for climate
experts to switch from seawater data to sea-air
temperature measurements.
One member of the team, David Parker, of the Hadley
Centre for Climate Prediction and Research at the Met
Office, said that the discovery of the discrepancy
"shows we don't understand everything, and that we
need better observations - all branches of science are
like that". Yet according to Mr Parker, the new results
do not undermine the case for global warming: "It is
raising questions about the interpretation of the
sea-surface data."
Even so, the findings will be seized on by sceptics as
more evidence that scientists have little idea about the
current rate of global warming, let alone its future rate.
Climate experts are still trying to explain why satellites
measuring the temperature of the Earth have detected
little sign of global warming - despite taking
measurements during supposedly the warmest period on
record.
Some researchers suspect that the fault may again lie
with the ground-based temperature measurements. They
say that many of the data come from stations
surrounded by growing urban sprawl, whose warmth
could give a misleading figure. A study of data taken
around Vienna, Austria, between 1951 and 1996 found
that the air temperature rose by anything from zero to
0.6ĄC, depending on precisely where the measurements
were made.
You read it first here.
Posted 20, January, 2001.
© Warwick Hughes, 2001
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