The satellite record, in all its current interpretations,
shows that the air near the surface is warming.
For background on the satellite temperature proxy please see:

http://en.wikipedia.org/wiki/Satelli...e_measurements

The URL below is one of the more conservative records
from the University of Alabama at Huntsville.

http://vortex.nsstc.uah.edu/public/m.../tltglhmam_5.2

The global data given above are graphed he

http://members.cox.net/rcoppock/UAH-MSU.jpg

The regression statistics for the line in the graph above
are below.

Coefficients:
Estimate Std. Error t value Pr(|t|)
(Intercept) -25.4841 2.2049 -11.6 2e-16
YEARMON 0.01281 0.00111 11.6 1.47e-26

Residual standard error: 0.18 on 356 degrees of freedom
Multiple R-Squared: 0.274
F-statistic: 134 on 1 and 356 DF, p-value: 1.47e-26