Bohm:
Besty answered the rest of your questions.
mP:
No she didnt she was making excuses. Like i said i too can claim 2010 was hotter than average if i pick a low year as the average marker or cheat.
YOu have compleetely ignored this basic point.
BOHM:
If you cant tell there is a trend you can look up basic linear regression and hypothesis testing and check it statistically, the kicker is there are people out there who have done that.
mP:
Again appeal to authority. It should be so basic to show a graph with a line going straight up and up and yet you cant.
BOHM
The explanation is the (local) temperature for one year is a random variable, you could also carry your argument to the extreme by observing the (hourly) maximum temperature in 1910 was a lot higher than the (hourly) minimum of 2012; that wouldnt proove anything either.
mP:
And yet 2010 is almost hte same as 1910. Your exaple is very much an increase but half the graphs on this and the page before dont come close to that.