What's more, there are several long - term records of global annual average surface temperatures. (newscientist.com)
An illustration of how meaningless the record and the results are is given by the fact that in many years the difference in global annual average temperature is at least half the 0.7 °C figure. (drtimball.com)
«I suggest that the hypothesis be that «The lower tropospheric global annual average temperature trend (TLT) from 2002 until now can not distinguished from a zero trend.» (skepticalscience.com)