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In a broad sense, this is a unique climate trigger analogous to a single data point. This is not like natural causes of climate change, which have more than one occurrence. The potential problem this unique event can create is, how do you know which curve to draw through the single data point, since a straight line or a curved line with any angle can still be made to touch one point? All we know from math is if the angle is not correct, extrapolation and predictions will not pan out. The current angle for the curve touching one point, depends heavily on fear, since the models always stresses doom and gloom. Since fear is subjective and computers are logical and don't have feelings, I would guess the fear is not computer generated.
http://www.drroyspencer.com/wp-content/uploads/CMIP5-73-models-vs-obs-20N-20S-MT.png is worth a look. It shows the predictions of 73 published climate models for the years 1979 - 2025, and the actual data to date. The best of the models has overestmated the actual temperature rise by 100% and the worst by 1200%. None of them has understimated the actual data.Now when I make an expert estimate of the likely outcome of an experiment, or of the probable effect of a forensic cause, I expect there to be an even chance of being a bit over or under the actual figure. Indeed I'm supposed to give a further estimate of the uncertainty of my prediction, and to explain any small bias in that figure. If 73 groups of supposed experts all overestimate the outcome, I think the court might suspect a bit of collective misunderstanding of the underlying physics, or possibly deliberate fraud.
One thing about manmade global warming and climate change is, if true, this would be a unique event in the history of the earth. It would be the first time, ever, that humans have had a global impact on global temperature and climate change. The climate warmed during the age of the Vikings but this was not due to humans. In a broad sense, this is a unique climate trigger analogous to a single data point. This is not like natural causes of climate change, which have more than one occurrence. The potential problem this unique event can create is, how do you know which curve to draw through the single data point, since a straight line or a curved line with any angle can still be made to touch one point? All we know from math is if the angle is not correct, extrapolation and predictions will not pan out. The current angle for the curve touching one point, depends heavily on fear, since the models always stresses doom and gloom. Since fear is subjective and computers are logical and don't have feelings, I would guess the fear is not computer generated. It appears to be part of the angle used for the curve; programmed into the computer model. Common sense about global climate change would assume there will also be pockets of good weather and better climate, here and there, but the computers are not being told to make this happen. This past fall in New England was very mild with most people in the areas not minding if this was the future. This could have been a prediction if the computer was not told to grimace and find doom. If the models had used the good side angle, the computers may have also said the north polar ice cap would not be melted by today. This would have been a better angle for extrapolation. The fear appears needed, not by the computer, but to keep the resources flowing. The constant hammer, set to fall, gets the system in motion; high resource war mode. Each time the hammer misses, it is reset with fear. The fear also seems to work like amnesia that continues to loosen tight pockets. If the computers had predicted the polar cpas will still be here, today, this is not as scary, but would have hit the nail on the head. There would mean less need to keep on investing, since the model would have the proper angle to do the job. The fear appears to be part of the sales pitch needed to get resources, with the new 50 year predictions one way to make the hammer miss less often.
This is a cyclic trend that the earth has gone through during its existence. We are however exacerbating it. We have been breaking temperature records year on year. How hot is extinction hot?http://www.independent.co.uk/news/world/middle-east/kuwait-swelters-record-breaking-54c-heatwave-weather-7152911.html
Let's take the example of something concrete. The 100 year flood estimate.By using extreme events analysed over time we can calculate the probability of a 1% flood occuring in any one year. We have a very short period of recorded data with which to calculate the probability so that it is a continuous process of recording, analysing and refining the data. This is what I did for ten years with the data from logging equipment. You see trends developing when you see the data evolve when corpared the other types of data from ice cores etc. That was about 8 years ago now and the scientists I worked with were concerned back then. They weren't building predictive models. They were looking at real data. Most people will never get anywhere near this data. It is owned and controlled by the companies that use the logging equipment. So Tim argue away if that makes you happy.
Quote from: jeffreyH on 25/07/2016 22:37:28Let's take the example of something concrete. The 100 year flood estimate.By using extreme events analysed over time we can calculate the probability of a 1% flood occuring in any one year. We have a very short period of recorded data with which to calculate the probability so that it is a continuous process of recording, analysing and refining the data. This is what I did for ten years with the data from logging equipment. You see trends developing when you see the data evolve when corpared the other types of data from ice cores etc. That was about 8 years ago now and the scientists I worked with were concerned back then. They weren't building predictive models. They were looking at real data. Most people will never get anywhere near this data. It is owned and controlled by the companies that use the logging equipment. So Tim argue away if that makes you happy.The fiddling of climatic data is controversial. Data can be manipulated by artificially modifying the weather using geoengineering. Thus it appears likely the global warming conspiracy theory is a quackery by tampering with climatic data.
Who is it that you assume is fiddling the data? These are not computer models. This is analysis of actual weather events. A piece of equipment can be incorrectly calibrated but this is obvious when plotting the data points. People like to see conspiracy. Those in charge also like people to see conspiracy since it distracts the foolish from what is really going on in plain sight. These days politicians rarely have to resign anymore from gross errors of judgement. Since no one seems to care how they act. So they get away with sneaking horrendous legislation into law in plain sight. Don't start complaining later on. You were too busy looking for conspiracies.