A blockbuster Chinese study of Tibetan tree rings by Liu et al 2011 shows, with detail, that the modern era is a dog-standard normal climate when compared to the last 2,500 years. The temperature, the rate of change — it’s all been seen before. Nothing about the current period is “abnormal”, indeed the current warming period in Tibet can be produced through calculation of cycles. Liu et al do a Fourier analysis on the underlying cycles and do brave predictions as well.
In Tibet, it was about the same temperature on at least four occasions — back in late Roman times (those chariots!), then again in the dark ages (blame the collapse of industry), then in the middle ages (the Vikings?), then in modern times (blame the rise of industry).
Clearly, these climate cycles have nothing to with human civilization. Their team finds natural cycles of many different lengths are at work: 2-3 years, 100 years, 199 years, 800 years, and 1,324 years. The cold periods are associated with sunspot cycles. What we are not used to seeing are brave scientists willing to publish exact predictions of future temperatures for 100 years that include rises and falls. Apparently, it will [...]
Gallup has done a world wide poll, about whether people believe the theory of man-made global warming. Though don’t stake too much money on the results, they only interviewed “approximately 1000 people” (what’s an approximate person?).
*So we’re talking about a survey of about 10 people per country.
The headlines are outrageously ambitious , “most of the human race”, yet having surveyed 111 countries it’s sort of half-way believable (with caveats). What’s striking is that the great man-made global warming theory has left no corner of the globe untouched… 10% of Somaliland believes it fergoodnesssake. (Well OK, so one person said “yes”.)
But it begs a few questions — like how do you phone poll accurately in countries where there are not many phones, and hardly anyone speaks English?
The China statistic is interesting. For all the talk that the world’s largest emitter of CO2 is “speeding to take up renewable energy” it ranks 105th out of 111 countries. “79%” of Chinese people are skeptics (well, more or less).
Tomb of Hong Quan Fu. Photo Iflwlou拍攝
It seems a warmer climate might be bad, but a colder one is deadly.
Once upon a time, people thought that overpopulation triggered crashes, but in this study by Lee and Zhang the hard numbers suggest instead that it was climate, and of course, it’s not the warmer kind of climate that causes the problems but the colder kind.
Malthusian cycles of population boom and bust aren’t the drivers here (though presumably having a large population means there is little buffer when the deadly cold spells hit).
From NIPCC: Cold Periods caused population crashes in China over the last millenium
…there were 5 major population contractions in China between 1000 CE and 1911, and all of them occurred in periods with a cold climate, when mortality crises triggered population collapses. [Abstract]
How much fun can you have in a long frost? Almost every kind of uprising, pain or plague.
In one population crash, the losses were as high as 49% of the peak. In the face of a 50:50 death rate, “perspective” doesn’t seem like quite the right word.
The public might not understand the science, but they do understand cheating
Dr. David Evans 6 October 2010
[A series of articles reviewing the western climate establishment and the media. The first and second discussed air temperatures, the third was on ocean temperatures, and fourth discussed past temperatures, the fifth compared the alleged cause (human CO2 emissions) with the alleged effect (temperatures) and the sixth canvassed the infamous attempt to “fix” that disconnect, the hockey stick.]
Click to download a pdf file containing the whole series
The western climate establishment consists of the climate science research bodies in the western world, and their climate scientists. The leading organizations are the IPCC of the United Nations, the CRU in Britain, and GISS and NOAA in the United States. Personnel move around within the establishment, getting funding from the same sources, collaborating on projects, and publishing in the same journals.
There are other climate establishments in this world, and [...]
A sample of recent scientific news from NIPCC * The Glaciers of Greenland were smaller 5000 years ago; * African savanna trees thrive with increases in CO2; * It was hotter in China a thousand years ago, and by a whole degree; * Marine-life-with-shells can’t agree on their favourite CO2 level and * Temperatures make no difference to the 5000 year record of hurricanes. [...]
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