Blockbuster: Anthony Watts squewers Muller, BEST, and the surface record all in one paper. « JoNova: Science, carbon, climate and tax

There goes half the warming trend. The best thermometers in the right places are not recording high trends.
They show Mueller and BEST’s latest exaggerated claims of 1.5C are meaningless.
They show that only class 1 and 2 stations (which are placed well, not next to concrete, car-parks, or air-conditioners) give reliable data and the warming trend from these stations is much lower than the warming trend from Class 3, 4 or 5 stations. It’s what we always knew — thermometers near artificial heat sources are measuring artificial warming, but it’s not the global kind.
Mueller, BEST, GISS, Hadley and all the others should have removed the poor stations entirely. No amount of statistical chicanery can remove the artificial warming no matter how you adjust, blend, or homogenize the data.
Worse, the adjusted data shows an even warmer trend than the warmest and worst stations. That casts a very dark shadow indeed. How honest or impartial are the scientists who adjust data from stations with thermometers near air-conditioners and create more warming? Bad stations have been adjusted up, and then the good stations were adjusted up to match the now-really-awful-bad ones. The stench of failure and a lack of dedication to the truth in on show…

You don’t need a PhD to know that thermometers placed in car parks are not measuring global warming.

Global Warming? Yeah, right. – Telegraph Blogs

[Delingpole] Have a look at this chart. It tells you pretty much all you need to know about the much-anticipated scoop by Anthony Watts of Watts Up With That?

What it means, in a nutshell, is that the National Oceanic and Atmospheric Administration (NOAA) – the US government body in charge of America's temperature record, has systematically exaggerated the extent of late 20th century global warming. In fact, it has doubled it.

Is this a case of deliberate fraud by Warmist scientists hell bent on keeping their funding gravy train rolling? Well, after what we saw in Climategate anything is possible. But I think more likely it is a case of confirmation bias. The Warmists who comprise the climate scientist establishment spend so much time communicating with other warmists and so little time paying attention to the views of dissenting scientists such as Henrik Svensmark – or Fred Singer or Richard Lindzen or indeed Anthony Watts – that it simply hasn't occurred to them that their temperature records need adjusting downwards not upwards.

WUWT suspend about US temperature data « Tallbloke's Talkshop

It’s a US issue, not terribly important to the rest of us.