Global temperatures have plummeted!

Back in 2008, this meme was going round the internet. Google it and you'll find in in many places. I can't work out where it was first posted.

The coveted .7 degree rise in temperatures over the last 100 years has been wiped out with last years below “normal” temperatures

This is the period referred to. (The original reference was to HadCrut3- I've used HadCrut4 because HadCrut3 is now defunct.)

Temperatures had indeed fallen. Whether or not global warming had been wiped out, time would tell.

This year, it's deja vu all over again in denial land, with this claim from David Rose:

Global average temperatures over land have plummeted by more than 1C since the middle of this year – their biggest and steepest fall on record. 

He was referring to Satellite temperatures over land, but lets look at global HadCrut4 temperatures to compare to the previous graph.

Temperatures have indeed fallen again.

But almost a decade has passed since the last "falling temperatures have wiped out AGW" meme. What has happened since then?

Temperatures recovered a bit, dropped a bit (but not as much as 2008) Then rose rapidly, then dropped again (but not as low as 2008).

Temperatures this year fell from a much higher starting point, and fell to a much higher low (so far).

The reason that temperatures fell of course is that an El Nino warmed the planet's surface for a while, and when it finished, temperatures cooled.

The climate clown's act looks even less convincing the second time around.