Category Archive 'IPCC'

23 Jul 2023

Where Do They Put the Thermometer, When They Measure the Temperature of the Earth?

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Fort Morgan, Colorado US Historical Climate Network Station. It is easy to see how urbanization can impact recorded temperature data.

BULLSHIT IN THE NEWS link

Issues & Insights identifies the key flaw in the Alarmist narrative.

The United Nation’s Intergovernmental Panel on Climate Change is quite certain Earth will be in trouble if the global temperature exceeds pre-industrial levels by 1.5 degrees Celsius or more. But how can anyone know? According to university research, “global temperature” is a meaningless concept.

“Discussions on global warming often refer to ‘global temperature.’ Yet the concept is thermodynamically as well as mathematically an impossibility,” says Science Daily, paraphrasing Bjarne Andresen, a professor at the University of Copenhagen’s Niels Bohr Institute, one of three authors of a paper questioning the “validity of a global temperature.”

Science Daily explains how the “global temperature” is determined.

“The temperature obtained by collecting measurements of air temperatures at a large number of measuring stations around the globe, weighing them according to the area they represent, and then calculating the yearly average according to the usual method of adding all values and dividing by the number of points.”

But a “temperature can be defined only for a homogeneous system,” says Andresen. The climate is not regulated by a single temperature. Instead, “differences of temperatures drive the processes and create the storms, sea currents, thunder, etc. which make up the climate”.

While it’s “possible to treat temperature statistically locally,” says Science Daily, “it is meaningless to talk about a global temperature for Earth. The globe consists of a huge number of components which one cannot just add up and average. That would correspond to calculating the average phone number in the phone book. That is meaningless.”

There are two ways to measure temperature: geometrically and mathematically. They can produce a large enough difference to show a four-degree gap, which is sufficient to drive “all the thermodynamic processes which create storms, thunder, sea currents, etc.,” according to Science Daily.

So if global temperature is unknowable, how can the IPCC and the entire industry of alarmists and activists be so sure there exists a threshold we cannot pass? Of course the IPCC says it knows the unknowable. In its latest report, released this month, it yet again maintained that the global temperature must “kept to well below 2º C, if not 1.5º C” above pre-industrial levels to avoid disaster.

A few years after the University of Copenhagen report was published, University of Guelph economist Ross McKitrick, one of the report’s authors, noted in another paper that “number of weather stations providing data . . . plunged in 1990 and again in 2005. The sample size has fallen by over 75% from its peak in the early 1970s, and is now smaller than at any time since 1919.”

“There are serious quality problems in the surface temperature data sets that call into question whether the global temperature history, especially over land, can be considered both continuous and precise. Users should be aware of these limitations, especially in policy-sensitive applications.”

RTWT

HT: Mark Tapscott.

Statistics! “There are three kinds of falsehoods, lies, damned lies, and statistics.” –Arthur Balfour.

“If I get to select both the data and the methodology of calculation, I can prove anything with statistics.” –David Zincavage.

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Originally posted: 18 August 2019.

18 Aug 2019

Where Do They Put the Thermometer, When They Measure the Temperature of the Earth?

, , , ,


Fort Morgan, Colorado US Historical Climate Network Station. It is easy to see how urbanization can impact recorded temperature data.

Issues & Insights identifies the key flaw in the Alarmist narrative.

The United Nation’s Intergovernmental Panel on Climate Change is quite certain Earth will be in trouble if the global temperature exceeds pre-industrial levels by 1.5 degrees Celsius or more. But how can anyone know? According to university research, “global temperature” is a meaningless concept.

“Discussions on global warming often refer to ‘global temperature.’ Yet the concept is thermodynamically as well as mathematically an impossibility,” says Science Daily, paraphrasing Bjarne Andresen, a professor at the University of Copenhagen’s Niels Bohr Institute, one of three authors of a paper questioning the “validity of a global temperature.”

Science Daily explains how the “global temperature” is determined.

“The temperature obtained by collecting measurements of air temperatures at a large number of measuring stations around the globe, weighing them according to the area they represent, and then calculating the yearly average according to the usual method of adding all values and dividing by the number of points.”

But a “temperature can be defined only for a homogeneous system,” says Andresen. The climate is not regulated by a single temperature. Instead, “differences of temperatures drive the processes and create the storms, sea currents, thunder, etc. which make up the climate”.

While it’s “possible to treat temperature statistically locally,” says Science Daily, “it is meaningless to talk about a global temperature for Earth. The globe consists of a huge number of components which one cannot just add up and average. That would correspond to calculating the average phone number in the phone book. That is meaningless.”

There are two ways to measure temperature: geometrically and mathematically. They can produce a large enough difference to show a four-degree gap, which is sufficient to drive “all the thermodynamic processes which create storms, thunder, sea currents, etc.,” according to Science Daily.

So if global temperature is unknowable, how can the IPCC and the entire industry of alarmists and activists be so sure there exists a threshold we cannot pass? Of course the IPCC says it knows the unknowable. In its latest report, released this month, it yet again maintained that the global temperature must “kept to well below 2º C, if not 1.5º C” above pre-industrial levels to avoid disaster.

A few years after the University of Copenhagen report was published, University of Guelph economist Ross McKitrick, one of the report’s authors, noted in another paper that “number of weather stations providing data . . . plunged in 1990 and again in 2005. The sample size has fallen by over 75% from its peak in the early 1970s, and is now smaller than at any time since 1919.”

“There are serious quality problems in the surface temperature data sets that call into question whether the global temperature history, especially over land, can be considered both continuous and precise. Users should be aware of these limitations, especially in policy-sensitive applications.”

RTWT

HT: Mark Tapscott.

Statistics! “There are three kinds of falsehoods, lies, damned lies, and statistics.” –Arthur Balfour.

“If I get to select both the data and the methodology of calculation, I can prove anything with statistics.” –David Zincavage.

23 Nov 2010

How Alleged “Climate Science” Rests Upon a Foundation of Fraud

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Dr. Vincent R. Gray (Cambridge Ph.D. in Physical Chemistry), deservedly ranked as one of Warmism’s leading skeptics, clearly and concisely identifies the fundamental frauds underlying Anthropogenic Warming Theory.

Anatomy of a Climate Fraud

ARE GREENHOUSE GASES INCREASING?

The British scientist John Tyndall in the 1860s, who first established the existence of the greenhouse effect, showed that the most important greenhouse gas is water vapour, so this should be the main emphasis of any investigation into possible damage from increase of greenhouse gases. Unfortunately the concentration of water vapour in the atmosphere varies over several orders of magnitude, being dependent on temperature, time and place. No accurate average value has ever been reliably measured and there is no acceptable evidence of any changes that have been taking place. Even if these were established it might be difficult to blame them on humans.

So, somehow, water vapour had to be ignored. This is done by leaving it out of lists of greenhouse gases, discussing it as little as possible and leaving it out of the main components of their model by calling it a “feedback”. assuming that its average value is exclusively dependent on average temperature.

So then, emphasis was placed on the next trace gas, carbon dioxide. This is a much more suitable candidate, because its concentration in the atmosphere can be blamed on combustion of fossil fuels by humans.

But then another snag arises. Its concentration in the atmosphere has been shown to be highly variable from some 40,000 measurements that have been reported in learned scientific journals, going back to 1850. Some of these measurements were made by Nobel Prize winners, all were respected scientists of the day, and the papers were peer reviewed in the days when this meant something.

In order to show carbon dioxide concentration in the atmosphere is increasing it is necessary to make continuous measurements distributed everywhere in the atmosphere on a representative basis. This is plainly impossible.

But do they despair? No. The first thing to do is to suppress all knowledge of any measurements of carbon dioxide in the atmosphere between 1850 and 1950. Then they publicized the measurements near the Mauna Loa volcano in Hawaii as the only authentic measurements and followed this up by taking measurements that had been made in a negligibly small sample of ice cores as representative of concentrations before the industrial era, Subsequently they permitted the use of measurements made over the sea in several places to be added, but they have prevented or suppressed all measurements over any land surface, or in any other than an approved direction which are regarded as “noise” (unwelcome data). These restricted results showed a fairly steady increase, but this was not large enough, so they more than doubled it for their models.

THE TEMPERATURE OF THE EARTH

Temperature on the earth’s surface is highly variable. It is impossible to show if there. a general increase unless you can measure the average surface temperature. This would surely involve the placing of measuring instruments randomly all over the earth’s surface, Including the 71% that is ocean, and all the forests, pastures, deserts and icecaps. Such an enterprise is impossible with current technology, so it is not possible to find if the average temperature of the earth is increasing.

But, again, a way of faking it was evolved. The originator, Jim Hansen of the Goddard Institute of Space Studies in New York features on his website a discussion headed “The Elusive Surface Temperature” which shows that there is no satisfactory way of defining or measuring the surface temperature of the earth. Yet he proposed to make use of temperature measurements that were routinely made at weather stations around the world as part of weather forecasting services, to derive what is called a “mean global temperature anomaly”.

Weather stations are not situated in representative places on the earth’s surface. They are predominantly near towns. Their number and location varies daily, so there is no fair statistical comparison over any time period. Although many (but not all) thermometers are housed in a standard screen, their positioning is far from standard and it changes over time. Many are close to buildings, sources of heat, concrete, tarmac, vegetation and other changing circumstances. There is no way of allowing either for the lack of representativity or the changes in circumstances.

Then, no weather station actually measures the average local temperature. They typically measure the maximum and the minimum over a 24 hour period which depends on the time of observation. This makes sense for weather forecasting since the temperature regimes by day and night are so different that an average between the two is meaningless.

Recent studies have shown that most weather stations, even today, cannot assess local temperature to better than a degree or two Celsius. Weather forecasters know that their figures are only rough. They never use decimals of a degree.

The “mean annual global temperature anomaly” involves multiple averaging, by week, month and year, plus a subtraction from the average for a reference petiod. This process must involve very large accumulated inaccuracies so that a claim of an increase in the “anomaly” of several decimals of a degree over 100 years is meaningless.

Then there is the overall warming effect of urban and land use change. The 1990 paper in “Nature” which was routinely used to claim the urban effects are negligible was shown by Keenan in 2000 to be fraudulent when he tried to find the Chinese data upon which it was partly based. Phil Jones recently admitted that the data did show an urban effect (and then promptly denied it) but the effect is still ignored in the teeth of the evidence in its favour

IF THERE IS WARMING, IT IS NATURAL?

There is overwhelming anecdotal evidence of warm periods In history which may have exceeded temperatures today, Efforts to discount these by manipulating unreliable “proxies” such as thickness of tree rings have been unsuccessful. There is even evidence from tree rings that the current era is not unusual leading to the need to “hide the decline”.

Besides being affected by urban and land use effects, the unreliable “mean global temperature anomaly” is affected also by currently known changes in the sun and in the ocean oscillations, particularly the North Atlantic Decadal Oscillation and the Southern Oscillation Index. Our knowledge of both of these effects is currently limited. Sunspots are an extremely crude measure of the Sun’s activity, and the ocean oscillations also have crude definitions.

FORECASTING THE FUTURE

The problem of forecasting future climate is also impossible to solve. Genuine honest scientists working in meteorology have struggled for several hundred years to try and provide a model of the climate which could help future forecasting. They have collected every measurable climate variable; wind, rain, temperature, atmospheric pressure, relative humidity, sunshine hours and cloud cover, and they have launched weather balloons to study the atmosphere. One measurement they have not found useful is the concentration of carbon dioxide, although that also has been measured in many places. Yet everybody, including the IPCC, knows that forecasts beyond a week or so are unreliable.

Yet in order to confirm the influence of increased greenhouse gases forecasting is essential, otherwise any theory is worthless.

It is insufficiently understood that the IPCC admits that computer based models of the climate are currently incapable of forecasting any aspect of future climate. This fact is freely admitted. Models never make “predictions”, but always “projections”, which are the results obtained by accepting the plausibility of the model assumptions. No “projection” from any climate model has ever successfully predicted any future climate behaviour. …

NATURAL VARIABILITY

Climate has always changed in an irregular manner over many time periods and its causes are at present imperfectly understood. Some changes (for example ice ages) take millions of years to develop. Others (such as the effects of a large volcanic eruption) influence only a year or so. The idea that natural changes can only be “variable” and not cause “climate change” is therefore incorrect. Also it is impossible to claim with any certainty that a particular change is “unprecedented” over such a short period as a few centuries.

The very existence of natural climate influences means that climate models that are not able to predict their influence cannot hope to detect any change caused by the greenhouse effect.

Since this is so, all the IPCC conclusions are based on the unproven opinions of those persons who are paid to produce the models. This conflict of opinion is so severe that any model maker who has a poor opinion of the results of his model would probably lose his job and career. This unreliable process is concealed by a system of levels of “likelihood” combined with fabricated figures of the statistical reliability of the “estimates”.

The forecasts made by meteorologists can be checked. If they are consistently wrong the model has to be modified. The “projections” made by the IPCC are usually so far ahead (100 years) that they cannot be checked until the experts have enjoyed their generous pensions. There is no way of telling whether one model is better than another. When more recent “projections” fail there is always the excuse that it is due to “natural variability”. …

CONCLUSION

Any routine scientific study would have abandoned the attempt to justify the current emphasis on the greenhouse effect because of the impossibility of carrying out any of the necessary observations to confirm its importance. It could only have been established as a potential threat by multiple fraud from each of the considerations listed above.

Hat tip to Bird Dog.

31 Jan 2010

Climategate, then Temperaturegate, then Glaciergate, Now Amazongate

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Christopher Booker, in the Telegraph, adds another glaring example to what is becoming an ever-growing list of exposed scientific falsehoods and wholly-fabricated claims of dire climactic effects.

This time it is the same Intergovernmental Panel on Climate Change (IPCC) that asserted that Himalayan glaciers would disappear by 2035 on the basis on a phone conversation has been found to be basing its claims concerning the Amazon rainforest on environmentalist agitprop.

The IPCC made a prominent claim in its 2007 report… citing the WWF as its authority, that climate change could endanger “up to 40 per cent” of the Amazon rainforest – as iconic to warmists as those Himalayan glaciers and polar bears. This WWF report, it turned out, was co-authored by Andy Rowell, an anti-smoking and food safety campaigner who has worked for WWF and Greenpeace, and contributed pieces to Britain’s two most committed environmentalist newspapers. Rowell and his co-author claimed their findings were based on an article in Nature. But the focus of that piece, it emerges, was not global warming at all but the effects of logging.

A Canadian analyst has identified more than 20 passages in the IPCC’s report which cite similarly non-peer-reviewed WWF or Greenpeace reports as their authority, and other researchers have been uncovering a host of similarly dubious claims and attributions all through the report. These range from groundless allegations about the increased frequency of “extreme weather events” such as hurricanes, droughts and heatwaves, to a headline claim that global warming would put billions of people at the mercy of water shortages – when the study cited as its authority indicated exactly the opposite, that rising temperatures could increase the supply of water.

Little of this has come as a surprise to those who have studied the workings of the IPCC over the years. As I show in my book The Real Global Warming Disaster, there is no greater misconception about the IPCC than that it was intended to be an impartial body, weighing scientific evidence for and against global warming. It was set up in 1988 by a small group of scientists all firmly committed to the theory of “human-induced climate change”, and its chief purpose ever since has been to promote that belief.

Read the whole thing.

17 Jan 2010

Sunday, January 17, 2010

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Martha Coakley’s increasingly desperate negative campaign ads are provoking satire. This example is from Boston radio 96.9 WTKK. 0:52 video.

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The Left is getting seriously worried about what will happen on Tuesday in Massachsetts.

Josh Marshall writes:

If Scott Brown wins on Tuesday, you can bet he’ll arrive in DC the next morning waiting to be sworn in. And there’s just not much precedent for any real delay of swearing in the winner of a special election, as long as the election result is not in dispute. (Oddly, there haven’t been that many Senate special elections — as opposed to appointments until the end of a given senate. So we’re actually trying to figure out now what precedent would apply.) At that point, Health Care Reform will be dead unless the House agrees to pass the Senate bill verbatim — which I really wonder about, given how dug in the progressives in the House are. Barney Frank doesn’t seem to think it’ll happen.

At that point, how incredibly stupid is the dawdling over the last few weeks going to look? The work of a year, arguably the work of a few generations, let go needlessly over a single special election?

It’s really almost beyond comprehension.

Late Update: TPM Reader VL responds …

    Not only that, but how cruel – not only for us here in MA but for the whole country – for it to be Kennedy’s seat itself that kills health care, the cause of his life.

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IPPC 2007: Glaciers in the Himalaya are receding faster than in any other part of the world and, if the present rate continues, the likelihood of them disappearing by the year 2035 and perhaps sooner is very high if the Earth keeps warming at the current rate.

Himalayan Glaciers not vanishing. No science was ever behind IPCC report‘s assertion that they were. How embarrassing! London Times.

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Lucianne describes last minute democrat health care desperation: Like trying to put an oyster into a slot machine, Nelson tries to give back his bribe. Associated news agency story.


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