gtemp

Global mean land-ocean temperature deviations (from 1951-1980 average), measured in degrees centigrade, for the years 1880-2009.

datasets

Data sets and scripts for Time Series Analysis and Its
        Applications: With R Examples by Shumway and Stoffer, 3rd
        edition.

The format is:
 Time-Series [1:130] from 1880 to 2009: -0.28 -0.21 -0.26 -0.27 -0.32 -0.32 -0.29 -0.36 -0.27 -0.17 ...

<url>http://data.giss.nasa.gov/gistemp/graphs/</url>