Longest
Available "Homogenous" Data set
Australia Only
2007 The Warmest Year on Record
Global Warming/Climate Change represents an excellent case study in the use of noisy data to try and define or characterize the problem. The bottom line, as we shall see, is that, while a scientifically plausible case for global climate change can, and will be made, the case is certainly not yet scientifically proveable.
These values were calculated using a network of more than 1,200 U.S. Historical Climatology Network stations. These data, primarily from rural stations, have been adjusted to remove artificial effects resulting from factors such as urbanization and station and instrument changes which occurred during the period of record.
The current situation (and what your homework data set looks like). Results and waveforms are sensitive to where you set the zero point or the average!
Longest
Available "Homogenous" Data set
Australia Only
Most Current Version and up to date models
One example of a model prediction. Not the excess heat
at the polar regions 
this is extremely
important as we will see
Various trend extrapolation (we will discuss trend extrapolations later in detail, ultimately lead to these kinds of scenarios:
Recent climate record strongly support warming at face value:
Is CO2 the primary driver? Issues of Lag time and non-linear response are very important here.
On the other hand, maybe CO2 has nothing to
do with it :)
