Robert,
In future, please delete the extra text that's not needed in your
reply.
Robbo wrote:
> Eric,
>
> Here is a good comparision of the temperature datasets and there is no
> huge difference - I prefer the satellite based measures for obvious
> reasons. RSS and UAH have converged in more recent times - which is
> why NASA pays for 2 different analyses. There realistically have to
> be checks.
>
>
> Robert
Here's the link you left off your comment:
http://jennifermarohasy.com/blog/2009/05/global-temperature-revisited/
-----------
I noticed that the author of this piece doesn't mention the background
of many problems with the UAH data. The RSS analysis was produced
after these problems were brought to light and was an effort to double
check Spencer and Christy's work. He doesn't mention the differences
between the earlier MSU and later AMSU instruments and the different
algorithms used for each. Nor does he discuss the various problems
which arise from efforts to stitch together data from several
satellites. A very shallow treatment, IMHO. If you want more detail,
read the US CCSP SAP 1.1...
Then the author considers data from 1997 thru 2008. It's obvious that
this is too short a period to compute a meaningful trend and with the
warm year of 1998 at the beginning of the time series, the resulting
trend is small. At least 25 years of data would be needed to span the
magnetic reversal cycle of the sun. In your previous post, you
suggested that 50 years of data would be better still, yet you seem to
think this comment has some value in the discussion. Why should I be
impressed here with your presenting the opposite situation?
What is new here? Nothing that I can see. It's just another repeat
of the old denialist cherry picking of data to fit their agenda.
Maybe you should stick to posting on CA or some other denialist forum
where the level of knowledge is so small that you appear to be an
expert, sort of like Bob Carter's McLean et al. 2009 paper...
E. S.
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