Climate scientists at Switzerland’s renowned ETH Zurich and the University of Bern have long warned of the risks of man-made global warming.
But in a brand new study their results now appear to have compelled them to postpone the expected global warming – by a few decades!
They now claim that a weaker sun (now expected over the coming decades) could reduce temperatures by half a degree Celsius.
Moreover the scientists clearly concede that the earth’s climate system is nowhere near as well understood as some scientists would like to have us believe and that the sun indeed plays a major role after all – enough so to override and postpone the effects of the often hyped greenhouse gases.
This will be hugely disappointing news for the catastrophe-hopers and cheerleaders, who hold front row tickets to the announced climate catastrophe, which according to some should be happening already.
The Swiss scientists say that sun’s impact on climate change has now been quantified “for first time” (see postscript below).
The Swiss scientists say that their model calculations show a plausible way that fluctuations in solar activity could have a tangible impact on the climate. The Swiss National Science Foundation-funded studies now expect human-induced global warming to tail off slightly over the next few decades. A weaker sun could reduce temperatures by half a degree.
The sun a factor after all
There is human-induced climate change, and there are natural climate fluctuations, the scientists acknowledge, and say one important factor in the unchanging rise and fall of the Earth’s temperature and its different cycles is the sun. As its activity varies, so does the intensity of the sunlight that reaches the earth’s surface. Previously IPCC reports assumed that recent solar activity was insignificant for climate change, and that the same would apply to activity in the near future.
However, researchers from the Physical Meteorological Observatory Davos (PMOD), the Swiss Federal Institute of Aquatic Science and Technology (EAWAG), ETH Zurich and the University of Bern are now qualifying this assumption. Their elaborate model calculations now provide a robust estimate of the contribution that the sun is expected to make to temperature change in the next 100 years and a significant effect is apparent.
They expect the Earth’s temperature to fall by half a degree when solar activity reaches its next minimum.
Project head Werner Schmutz, who is also Director of PMOD, says this reduction in temperature is significant and believes it could win valuable time if solar activity declines and slows the pace of global warming a little.
Strong fluctuations could explain past climate
At the end of March, the researchers working on the project will meet in Davos for a conference to discuss the final results. The project brought together various research institutions’ capabilities in terms of climate effect modelling. PMOD calculated what is known as “radiative forcing” taking account of particle as well as electromagnetic radiation, ETH Zurich worked out its further effects in the Earth’s atmosphere and the University of Bern investigated the interactions between the atmosphere and oceans.