Because it serves their purposes: “Why does the NPS maintain the electronic sign that shows erroneous readings, such as what was highlighted in an LA Times story during the recent temperature spike?”

Global Warming Alarmists Caught Doctoring ’97-Percent Consensus’ Claims

Either through idiocy, ignorance, or both, global warming alarmists and the liberal media have been reporting that the Cook study shows a 97 percent consensus that humans are causing a global warming crisis. However, that was clearly not the question surveyed.
Investigative journalists at Popular Technology looked into precisely which papers were classified within Cook’s asserted 97 percent. The investigative journalists found Cook and his colleagues strikingly classified papers by such prominent, vigorous skeptics as Willie Soon, Craig Idso, Nicola Scafetta, Nir Shaviv, Nils-Axel Morner and Alan Carlin as supporting the 97-percent consensus.
Cook and his colleagues, for example, classified a peer-reviewed paper by scientist Craig Idso as explicitly supporting the ‘consensus’ position on global warming “without minimizing” the asserted severity of global warming. When Popular Technology asked Idso whether this was an accurate characterization of his paper, Idso responded, “That is not an accurate representation of my paper. The papers examined how the rise in atmospheric CO2 could be inducing a phase advance in the spring portion of the atmosphere’s seasonal CO2 cycle. Other literature had previously claimed a measured advance was due to rising temperatures, but we showed that it was quite likely the rise in atmospheric CO2 itself was responsible for the lion’s share of the change. It would be incorrect to claim that our paper was an endorsement of CO2-induced global warming.”

Via No Tricks Zone;

‘Unfortunately in climate science there is a tendency to proclaim absolute truths and to link these immediately to instructions on actions to take,’ [IPCC lead author Hans von Storch] said. ‘The climate pope tells us what has to be done, and for the people it’s: keep your mouths shut. Scientists have been taking over the roles of medicine men and priests. That’s not the job of scientists. Science is supposed to help understand problems, show the possibilities that exist in dealing with them. The best is to show many possibilities. Then the political process has to decide the path to take.’
But some of his colleagues in science like to use ‘stories that point to a catastrophe,’ said the professor of meteorology. One example was the assumption that our region would see ‘murderous violent storms’. But there was no data showing this. ‘It all has a cultural, anthropological background’ . ‘If you sin, then you will be punished. And the punishment always takes on an environmental dimension which also included storms in the past. In former times it was God’s punishment. Today it’s punishment by Nature. Nature is to keep man in check. And for this we see idiotic films like ‘The Day After Tomorrow.”
With ‘snappy’ and short statements like ‘snow will be a thing of the past’, the loud speakers among the scientists are putting the credibility of science at stake.'”

The BBC’s Roger Harrabin, via Junk Science;

“So it is possible that the climate would warm less than predicted, but the effects of the warming at a low level might be greater than predicted.”

Related: 12,793 Snow and Cold records broken in less than 2 months

Joe Bastardi, Weatherbell.com