I just came across an interesting way to eliminate the
impression of a global warming. A trick used to argue that the
global warming had stopped, and the simple recipe is as follows:
I’ve tried to reproduce the plot below (here is the R-script):
At least, many different global analyses were shown – not just
the one which indicates weakest trends since year 2000. The data
presented in this case included both surface analyses (GISTEMP,
NCDC, and HadCRUT3) in addition to satellite products for the
lower troposphere (Microwave Sounding Unit – MSU). The MSU data
tend to describe more pronounced peaks associated with the El
Nino Southern Oscillation. A comparison between the original
version of this plot and my reproduction (based on the same data
sources) is presented below (here is a link to a PDF-version).
Note, my attempt is very close to the original version, but not
identical. One should note that plotting the same data over the
their entire length (e.g. from the starting date of the
satellites in 1979) will