Re: OT: Not much warming here !
- From: Raveninghorde <raveninghorde@invalid>
- Date: Mon, 11 May 2009 13:56:32 +0100
On Mon, 11 May 2009 05:37:11 -0700 (PDT), bill.sloman@xxxxxxxx wrote:
On May 11, 4:32 am, "Andrew" <andyv...@xxxxxxxxx> wrote:
http://en.wikipedia.org/wiki/File:Instrumental_Temperature_Record.png
The data present there reflects real measurements, not models. The
most plausible explanation of the increase - an increasing greenhouse
effect driven by rising concentrations of CO2 in the atmosphere - does
rely on layered models of the atmosphere to describe what's going on,
but that's what physics is about.
=============================
Funny, how temperature does not correlate with changes in hydrocarbon use.
- How much CO2 was generated by humanity in 1920 vs 1980? Temperature slope.
- What is the reason of the temeprature drop between 1940 and 1970 despite
rising use of hydrocarbon?
http://ginacobb.typepad.com/gina_cobb/images/2008/06/06/solarvsco2.jpg
The usual explanation is sulphur dioxide pollution from burning high-
sulphur oil, which also caused acid rain. Once we went over to
scrubbing the SO2 out of the chimney stacks of dirty-oil fired power
stations, acid rain went away, and with it the aerosols high in the
atmosphere which had been raising the earth's albedo and cooling the
planet.
Some people have also pointed the finger at the North Atlantic
Multidecadal Oscillation, which seems to have been in a cooling phase
back then, and may be in another such cooling phase at the moment.
A slightly longer temperature sequence puts your - cherry-picked -
data in context
http://en.wikipedia.org/wiki/File:Instrumental_Temperature_Record.png
where one can see that the 1940 to 1980 feature is just a wiggle in a
longer term rising trend.
And up to date data that puts your cherry picked data in context:
http://hadobs.metoffice.com/hadcrut3/diagnostics/comparison.html
.
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