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World Is Finally Waking Up To Climate Change, Says 'Hothouse Earth' Author (theguardian.com)
The scorching temperatures and forest fires of this summer's heatwave have finally stirred the world to face the onrushing threat of global warming, claims the climate scientist behind the recent "hothouse Earth" report. Following an unprecedented 270,000 downloads of his study, Johan Rockstrom, executive director of the Stockholm Resilience Centre, said he had not seen such a surge of interest since 2007, the year the Nobel prize was awarded to Al Gore and the Intergovernmental Panel on Climate Change. The Guardian: "I think that in future people will look back on 2018 as the year when climate reality hit," said the veteran scientist. "This is the moment when people start to realize that global warming is not a problem for future generations, but for us now." The heatwave has dominated headlines across the northern hemisphere this summer. New temperature records have been set in Africa and cities in Australia, Taiwan, Georgia and the west coast of US. Heat stroke or forest fires have killed at least 119 in Japan, 29 in South Korea, 91 in Greece and nine in California. There have even been freak blazes in Lapland and elsewhere in the Arctic circle, while holidaymakers and locals alike have sweltered in unusually hot weather in southern Europe. Coming amid this climate chaos, the "hothouse Earth" paper by Rockstrom and his co-authors struck a chord with the public by spelling out the huge and growing risk that emissions are pushing the planet's climate off the path it has been on for 2.5m years.
How can it be taken seriously when they are constantly changing the historical temperature data to match their hypothesis?
"They" are not "changing the historical temperature data to match their hypothesis". That is a made-up alternate-fact being promulgated by the deniers.
You are referring, I assume to the Goddard Institute for Space Studies historical temperature record. The analysis of the data is exhaustively documented , including a FAQ giving an overview for popular audiences that are too bored to read the actual documentation. And the original data set, and all of previous historical analyses, are available on the web, showing that the changes in analysis technique don't alter the conclusion that the climate is warming. Here, for example, are the graphs showing the results of every different correction to the analysis, dating back to 1981.
In any case, you do know that several other groups, such at BEST, also analyze historical climate data, and come out with rates of warming that are essentially the same. So your conspiracy theory that scientists are altering their data in order to hoax the public is going to be a conspiracy of hundreds, and probably thousands, of scientists in independent groups on three different continents.
well-verified models that have been vetted and analyzed
The models have consistently over-predicted temperatures.
to the contrary, the models have fit the data to well within confidence limits, and continue to do so.
Here's an article from Forbes about the very first Global Climate Model, Manabe and Wetherald 1967, looking back at how well their predictions from fifty years ago compared to data: https://www.forbes.com/sites/startswithabang/2017/03/15/the-first-climate-model-turns-50-and-predicted-global-warming-almost-perfectly/
And here are graphs, showing that the prediction from fifty years ago (red line) fits the data (blue line) almost exactly. https://climategraphs.wordpres...
Later models have refined Manabe and Wetherald 1967, incorporating other effects than simply carbon dioxide and water vapor, but haven't changed the answer. Here is the Berkeley Earth page comparing climate models used in the IPCC report against data: http://berkeleyearth.org/graph...
The problem with the deniers, on the other hand, is that they don't have a prediction. They don't have an alternative model, they don't have anything.