-Caveat Lector-
Here are 2 datasets, the first is including sea surface temperature:
http://www.giss.nasa.gov/data/update/gistemp/GLB.Ts+dSST.txt
the next using meteorological stations only:
http://www.giss.nasa.gov/data/update/gistemp/GLB.Ts.txt
You will see by looking at both datasets that the annual mean temperature is
increasing. I found this stuff thanks to 'Grist.'
http://www.gristmagazine.com/grist/heatbeat/weather011101.stm
and the link 'about the data:'
http://www.gristmagazine.com/grist/heatbeat/data0599.stm
Another issue about air above the Ocean is that enthalpy rather than
temperature
is the true measurement of heat, which includes both sensible heat and the
latent
heat of vaporization of the water vapor (evaporating water droplets can cool
the
air.)
I'm still more interested in surface temps than theoretical satellite temps,
but
here are some satellite links
http://orbit-net.nesdis.noaa.gov/crad/st/amsuclimate/gifs/rt40.gif
http://pm-esip.msfc.nasa.gov/amsu/index.phtml?1
Bob Maginnis
[EMAIL PROTECTED] wrote:
> Are there any comments or retorts to this controversial report?
> ======
> LONDON TELEGRAPH Jan. 14, 2001
> Global warming claims 'based on false data'
> By Robert Matthews
>
> 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 0.5 ° C, 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 0.18ˇC per decade to
> 0.13ˇC.
>
> 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 0.6ˇC,
depending
> on precisely where the measurements were made.
>
> __________
> EcoNews Service - Always online for Exopolitics & a Universe Ecology.
> EcoNews http://www.ecologynews.com/
> Prague http://mujweb.cz/www/ecologynews/
> mailto:[EMAIL PROTECTED]
>
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