I have written a lot before about the problems with the average global temperature data that the proponents of global warming distribute. The curious thing that does not arouse the curiosity of journalists or even other “scientists” is that raw temperature data from around the world do not show any temperature increase, but the “adjusted” data does show warming. One problem I noted many years ago was that huge area of the world has no temperature measurements, and they do not use data from many regions. Instead they extrapolate or interpolate to get the temperature in those regions. It seems to me that it is impossible to take the monthly average temperature in Dallas and predict the temperature in El Paso with an accuracy of 0.1 degree. I have never seen the technical paper that demonstrates that this can be done successfully, and I doubt that it can be done. Here is a good discussion of this issue from the blog Strata-Sphere.