Actually, yes it is -
http://www.ncdc.noaa.gov/oa/climate/globalwarming.html
Also, sea surface temperature is rising as well -
http://www-das.uwyo.edu/~geerts/cwx/...obal_temp.html
Again I can only repeat - at a certain point, the cause of this trend is somewhat irrelevant, what matters is how we respond to the changes, and safeguard the viability of our massive and growing population.