Chinese scientists warn of global cooling, impact of solar activity 

Posted: August 13, 2019 by oldbrew in climate, Cycles, Natural Variation, research
Tags: ,

Credit: Wikipedia


The researchers say: “We have detected no evidence of human influence”, so the implications of the observed long-term natural variation are clear enough. But some reading between the lines may be needed here, due to a few of the usual nods towards man-made warming theory that climate researchers feel they have to make to survive these days.

Research sheds light on 500-year Chinese climate cycle and suggests global cooling could be on the way, reports the South China Morning Post.

A new study has found winters in northern China have been warming since 4,000BC – regardless of human activity – but the mainland scientists behind the research warn there is no room for complacency or inaction on climate change, with the prospect of a sudden global cooling also posing a danger.

The study found that winds from Arctic Siberia have been growing weaker, the conifer tree line has been retreating north, and there has been a steady rise in biodiversity in a general warming trend that continues today.

It appears to have little to do with the increase in greenhouse gases which began with the industrial revolution, according to the researchers.

Lead scientist Dr Wu Jing, from the Key Laboratory of Cenozoic Geology and Environment at the Institute of Geology and Geophysics, part of the Chinese Academy of Sciences, said the study had found no evidence of human influence on northern China’s warming winters.

“Driving forces include the sun, the atmosphere, and its interaction with the ocean,” Wu said. “We have detected no evidence of human influence. But that doesn’t mean we can just relax and do nothing.”

Wu and her colleagues are concerned that, as societies grow more used to the concept of global warming, people will develop a misplaced confidence in our ability to control climate change. Nature, they warned, may trick us and might catch us totally unprepared – causing chaos, panic, famine and even wars as the global climate system is disrupted.

There are already alarming signs, according to their paper, which has been accepted for publication by the online Journal of Geophysical Research: Atmospheres.

Wu and her colleagues spent more than a dozen years studying sediments under Moon Lake, a small volcanic lake hidden in the deep forests of the here Mountain Range in China’s Inner Mongolia autonomous region.

They found that winter warming over the past 6,000 years had not been a smooth ride, with ups and downs occurring about every 500 years.

Their findings confirmed an earlier study by a separate team of Chinese scientists, published by online journal Scientific Reports in 2014, which first detected the 500-year cyclical pattern of China’s summer monsoons and linked it to solar activity.

Full article here.

  1. oldbrew says:

    Along similar lines…

    AUGUST 12, 2019
    Northern tropical dry trend may just be normal variation
    by Chinese Academy of Sciences

    The scientists also developed a 2000-year Intertropical Convergence Zone (ITCZ) shift index record, which shows an overall southward shift over the past two millennia, and southward mean positions of ITCZ during the early Medieval Warm Period and the Current Warm Period in the central Indo-Pacific.

    The scientists noted that the drying trend in the northern tropics since the early 20th century is similar to that from 950-1150 AD, which was attributed to a southward ITCZ shift and enhanced El Niño-like conditions. As a result, possible anthropogenic rainfall remains indistinguishable from natural variability in the northern tropics, Prof. Tan said. In other words, no clear case can be made that the recent northern tropical drying trend is caused by anthropogenic forces.

    ‘No clear case’ – indeed. And the ITCZ moving south during the Medieval Warm Period contradicts the claim that it was only a ‘regional’ phenomenon confined to parts of Europe and North America.

  2. ivan says:

    Now we see the reason for the latest green scam panic by the climate alchemists and the UN – they are afraid the gravy train will hit the buffers and they will be out of a job.

    People might realise that have been conned and get very upset, not the time to be a political ‘scientist’ pushing the IPCC line.

  3. stpaulchuck says:

    for the ignorant, history began a few years ago. The scamsters deliberately obfuscate the historical facts that the Little Ice Age ended around 1830 to 1850, which coincidentally happens to be the beginning of the Industrial Age which they blame for the warm up as opposed to a return to median.

    I have a nice little winter home in the Tropics and if the real scientists are correct the the long term cooling trend will be a pleasant development.

  4. Pablo says:

    ‘According to Wu, the variation in solar activity alone was usually not strong enough to induce the rapid changes in vegetation the research team recorded in the sediment cores of Moon Lake. Instead, the scientists found the warming impact was amplified by a massive, random interaction between surface seawater and the atmosphere in the Pacific Ocean known as the El Nino-Southern Oscillation.

    As a result of the research findings, Wu said she was now more worried about cooling than warming.’

    ……”Shorter-lived climate anomalies, on timescales of months to one or two years, also have been related to ocean surface temperature anomalies. The equatorial oceans have the largest influence on these climate anomalies because of the evaporation of water. A relatively small change in ocean surface temperature—of, perhaps, 1 °C (1.8 °F)—may result in a large change in the evaporation of water into the atmosphere. The increased water vapour in the lower atmosphere is condensed in regions of upward motion known as convergence zones. This process liberates latent heat of condensation, which in turn provides a major fraction of the energy to drive tropical circulation and is one of the mechanisms responsible for the El Niño/Southern Oscillation (ENSO) phenomenon discussed later in this article.”…


  5. JB says:

    The 500 year cycle (8.6*58) corresponds approximately with Martin Armstrong’s 6*8.6 business cycle and 8.6*36 economic cycles.

  6. craigm350 says:

    Reblogged this on WeatherAction News and commented:

    Wu and her colleagues are concerned that, as societies grow more used to the concept of global warming, people will develop a misplaced confidence in our ability to control climate change. Nature, they warned, may trick us and might catch us totally unprepared – causing chaos, panic, famine and even wars as the global climate system is disrupted

    Which is exactly what history should have taught us and why the UK was caught out by a series of cold winter episodes from 2009-2013.