On Tue, 12 Apr 2011 18:24:13 +0200, Tom P wrote:

On 04/12/2011 04:47 PM, Falcon wrote:
In , Tom P wrote...

On 04/12/2011 01:39 AM, Roger Coppock wrote:
The satellite record, in all its current interpretations, shows that
the air near the surface is warming. For background on the satellite
temperature proxy please see:
http://en.wikipedia.org/wiki/Satelli...e_measurements

The URL below is one of the more conservative records from the
University of Alabama at Huntsville.
http://vortex.nsstc.uah.edu/public/m.../tltglhmam_5.4 The global
data are graphed he http://members.cox.net/rcoppock/UAH-MSU.jpg

The Remote Sensing Systems Lower Troposphere (TLT) analysis also
shows a temperature rise above the surface of the land and sea.
http://www.remss.com/data/msu/monthly_time_series/
RSS_Monthly_MSU_AMSU
_Channel_TLT_Anomalies_Land_and_Ocean_v03_3.txt The data from 82.5N
to 70S are graphed he http://members.cox.net/rcoppock/RSS-MSU.jpg

The trend is very much dependent on the latitude. If you look at the
figures for the various latitude bands, the positive trend is most
dramatic for 60/82, and nearly as strong for -20/20, whereas the trend
for -70/70 is almost zero - which seems to indicate that temperate
latitudes are not warming??

It's also time-dependent. Roger's not the only one who can draw pretty
graphs, but in this examplehttp://i55.tinypic.com/iwrg35.png you can
see how useful a linear trend line is, depending on what you want to
show. The data is from Roger's thoughtfully provided source. I added
another trend line that's probably a little more representative of
what's been happening lately.


Sure - if you think that leaving out 95% of the RSS data is
"representative". Using a 10-year data span, all you have to do is pick
the right El Nino peaks and troughs for your start and end-points, and
you can get any result you care for.

Well, right now is where we are, and seems to be a reasonable end point,
so at what point on the graph would you suggest starting? What
percentage of starting points give you a warming trend versus a cooling
trend?

Anyway, the title 'Latest Satellite MSU Data Show Continued Warming'
infers that warming is continuing to occur, regardless of latitude. The
fact that RSS satellite measurements have detected a small but
appreciable amount of cooling over the last decade (there's that pesky
linear trend thing again) would indicate that the word 'continued
warming' in the subject line is deliberated misleading.

Of course, as a confirmed 'sceptic', Dawlish has probably already
jumped in here to describe Roger's description as 'spinning' the latest
RSS figures. Or maybe he hasn't ...