From the told ya so department, comes this recently presented paper at the European Geosciences Union meeting.
Authors Steirou and Koutsoyiannis, after taking homogenization errors into account find global warming over the past century was only about one-half [0.42°C] of that claimed by the IPCC [0.7-0.8°C].
Here’s the part I really like: of 67% of the weather stations examined, questionable adjustments were made to raw data that resulted in:
“increased positive trends, decreased negative trends, or changed negative trends to positive,” whereas “the expected proportions would be 1/2 (50%).”
And…
“homogenation practices used until today are mainly statistical, not well justified by experiments, and are rarely supported by metadata. It can be argued that they often lead to false results: natural features of hydroclimatic times series are regarded as errors and are adjusted.”
The paper abstract and my helpful visualization on homogenization of data follows:
Investigation of methods for hydroclimatic data homogenization
Steirou, E., and D. Koutsoyiannis, Investigation of methods for hydroclimatic data homogenization, European Geosciences Union General Assembly 2012, Geophysical Research Abstracts, Vol. 14, Vienna, 956-1, European Geosciences Union, 2012.
We investigate the methods used for the adjustment of inhomogeneities of temperature time series covering the last 100 years. Based on a systematic study of scientific literature, we classify and evaluate the observed inhomogeneities in historical and modern time series, as well as their adjustment methods. It turns out that these methods are mainly statistical, not well justified by experiments and are rarely supported by metadata. In many of the cases studied the proposed corrections are not even statistically significant.
From the global database GHCN-Monthly Version 2, we examine all stations containing both raw and adjusted data that satisfy certain criteria of continuity and distribution over the globe. In the United States of America, because of the large number of available stations, stations were chosen after a suitable sampling. In total we analyzed 181 stations globally. For these stations we calculated the differences between the adjusted and non-adjusted linear 100-year trends. It was found that in the two thirds of the cases, the homogenization procedure increased the positive or decreased the negative temperature trends.One of the most common homogenization methods, ‘SNHT for single shifts’, was applied to synthetic time series with selected statistical characteristics, occasionally with offsets. The method was satisfactory when applied to independent data normally distributed, but not in data with long-term persistence.
The above results cast some doubts in the use of homogenization procedures and tend to indicate that the global temperature increase during the last century is between 0.4°C and 0.7°C, where these two values are the estimates derived from raw and adjusted data, respectively.
Ooops. There goes half of “the proof”.
Meanwhile, over half of the country seems to be drying up and about to blow away.
That’s great Greg, but have you figured out what is a major factor that is causing this heat wave? Here’s a hint, second word is Flare, first word starts with S. Rating level X-Class, massive radation storm hitting Earth. Pay attention, you might actually learn something.
From July 12, 2012:
http://phys.org/news/2012-07-prelude-x-class-solar-flare.html
The storm’s already hit and the flare’s trailing winds hits majority of the Northern Hemisphere. What a surprise, most of the temps that are sweltering are being recorded from the Northern Hemisphere and areas that normally don’t see Auroras are getting the light show while there are reports of electric blue clouds in the sky from the radation effects.
And ontop of that the article repeats what I’ve said before, CO2 acts as a coolant gas in contrast to the AGW rants and raves against it.
Greg seems to have forgotten about this FA Topic that he posted in:
Newly found weather records show 1930′s as being far worse than present extreme weather
@Ditto:
I was just going to bring that up as well.
Greg said;
http://floppingaces.net/most_wanted/newly-found-weather-records-show-1930%E2%80%B2s-as-being-far-worse-than-present-extreme-weather/
Of course, that was three days ago. Now Greg says this;
Which is it, Greg? Do daily temperatures ONLY count when it trends towards supporting the AGW hypothesis? Trying to have it both ways is why the AGW scientists are so fouled up in their conclusions, Greg, and you imitate them nearly perfectly.
JG, just proof of what I have said about greg. If he has to lie to push his propaganda, he does it without shame. Besides, you don’t think he got that (alleged) 400K net worth by being honest, do you? (using his own “logic” against him)
Not everyone agrees that it’s all a matter of the Sun. Here’s a chart that plots the rolling 11-year average of solar activity against the rolling 11-year average of temperature over a period of around 120 years. Note that the two trends cease to correspond after 1980.
Hate to break it to you Greg, but that doesn’t help dismiss that the Earth is being soaked in a couple billion killowatts worth of energy coming from of Microwave, Infrared and Ultraviolet radation with about a few million (low end being 2 million to the high end 5 million killowatts of energy) breaking into our Atmosphere. The rest that doesn’t come though our atmosphere is slowly stripping off the atmosphere and displacing it into space as we live right now and as Sol gets larger (which it is ever so slowly) Earth’s atmosphere will be boiled away from outside forces not from Man, but again this just shows your deep utter lack of astronomy (silly autocorrect wanted astrology XD lol) by relying on a source that hasn’t actually relied on real NASA solar radation testings.
And just looking at, “Sources” your link has? It’s pure bunk and garbage right off the bat. It ignores NASA and even the damn CCCP’s findings about Sol’s radation storms impacts on the planet since the late 50’s considering the climate data across the globe before the whole fear and panic of AGW horse poop hit the grass is the fact the world was panicing over a coming Global Ice Age due to lowering temps. The mid 80’s have seen an increase in Solar Flare activity and along with it increases in temps, but hey let’s just ignore the CCCP’s own studies huh? And now the Chinese are finding out from their own space race programs about the radation hazards Terra is soaked in.
1,200 killowatt Microwave Oven does serious damage to materials on a cook time of a minute, are you going to say that a few Billion killowatts of raw Microwave energy coming from Sol has no impact on thermal dynamics of our planet? Really? And you say you’re a layman…
And ontop of this you ignore that the data you’re trying to use as, “proof” has been found as fraud data manipulated to make sure a certain outcome comes from testing. This is NOT how science is ran or done, but you’re telling us it is and must be true. Yeah, smells like horse poop.