Global Cooling Print E-mail
Written by Dr Gerrit J. van der Lingen   
Thursday, 27 February 2014 22:49

The hypothesis that human emissions of greenhouse gases, especially carbon dioxide (CO2), are causing, or will be causing, dangerous global warming, has been severely criticized on scientific grounds. The critical literature is substantial, not only peer-reviewed scientific papers, but also several substantial scientific books (to mention just a few: Idso and Singer, 2009; Idso, Carter and Singer, 2013a; Carter, 2010; Plimer, 2009).



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The Final Final IPCC AR5 WGI Report Print E-mail
Written by Dr. Vincent Gray   
Friday, 21 February 2014 22:59

The Fifth Report of the Intergovernmental Panel on Climate Change WGI Report Climate Change 2013: The Physical Science Basis has at last appeared on the IPCC website at http://www.ipcc.ch/report/ar5/wg1/.

The last Fifth Report, which was received at Stockholm in September 2013, approved the Summary for Policymakers but merely accepted the rest of the Report, pending further amendment. They published the entire “accepted” Report in a form that claimed it was merely a draft with the declaration: “Do not Cite, Quote or Distribute”.

The “Final, Final” Report was published on the 30th of January, with a press statement at https://www.ipcc.ch/pdf/press/press_release_wg1_full_report.pdf.

It still appears to be incomplete.



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Rising Atmospheric C02 and Soil Erosion Print E-mail
Written by Staff   
Friday, 21 February 2014 00:26

Almost from the beginning of scientific interest in the subject, study after study had concluded that soil erosion by both wind and water was a major environmental problem. In fact, in an article published in Science a decade and a half ago, Trimble and Crosson (2000)[1] noted that "some sources have suggested that recent erosion is as great as or greater than that of the 1930s," just as some sources were suggesting that global temperatures were greater at that time than they were in the 1930s (Crowley, 2000; Mann 2000).

The remarkable feature of this long-held belief in continued high, or even increasing, soil erosion, in the words of Trimble and Crosson, was that "it was based mostly on models," just as the global warming scare was (and still is!) based mostly on models.



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The IPCC Admits Defeat Print E-mail
Written by Staff   
Wednesday, 19 February 2014 11:39

All you need to know about “global warming” is in this one simple graph. For 17 years 5 months, there has not been any global warming at all.



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Medieval Warm Period in the Contiguous United States Print E-mail
Written by Staff   
Thursday, 13 February 2014 11:42

Climate alarmists claim that rising atmospheric CO2 concentrations due to the burning of fossil fuels, such as coal, gas and oil, have raised global air temperatures to their highest level in the past one to two millennia. And, therefore, investigating the possibility of a period of equal global warmth within the past one to two thousand years has become a high-priority enterprise; for if such a period could be shown to have existed, when the atmosphere's CO2 concentration was far less than it is today, there would be no compelling reason to attribute the warmth of our day to the CO2 released to the air by mankind since the beginning of the Industrial Revolution. Thus, in this review of the pertinent scientific literature, results of the search for such knowledge are presented for studies conducted within the confines of the lower 48 contiguous states of the United States of America.



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Evolution in Natural Vegetation: The Role of C02 Print E-mail
Written by Staff   
Thursday, 06 February 2014 09:38

Some two decades ago, Root and Schneider (1993) wrote that CO2-induced changes in global climate were expected - by them and other climate alarmists - to occur "too fast for evolutionary processes such as natural selection to keep pace," while adding that this phenomenon "could substantially enhance the probability of extinction of numerous species."

This famous but unsubstantiated declaration has ever since pervaded the thinking of the world's climate-alarmists. But is the highly-hyped contention correct? This document broaches that question as it pertains to demonstrable CO2-induced changes in natural (i.e., non-agricultural) terrestrial vegetation, as revealed by a number of subsequent scientific studies.



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Lindzen Libeled Print E-mail
Written by Christopher Monckton of Brenchley   
Wednesday, 05 February 2014 19:10

Dana Nuccitelli of Unskeptical Science has written a characteristically spiteful piece in the Guardian about Professor Lindzen. The piece constitutes a grave libel. Britain, still to some extent a free country, is one up on the U.S. in allowing anyone – even a public figure – to sue for libel, especially where, as here, he is libeled in his profession. That typically triples the damages. Ladies and gentlemen of the jury, here are Nuccitelli’s allegations, in bold and in order of appearance, followed in each instance by the truth.



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Health-Promoting Effects of Elevated C02 on Medical Plants Print E-mail
Written by Staff   
Wednesday, 05 February 2014 18:54

How will the ongoing rise in the air's CO2 content alter the amounts and concentrations of various health-promoting substances produced by medicinal or "health food" plants? This question was broached early on by Stuhlfauth et al. (1987), who found that a near-tripling of the air's CO2 content increased the dry weight production of the woolly foxglove plant (which produces the cardiac glycoside digoxin used in the treatment of cardiac insufficiency) by 63% under dry conditions and by 83% when well-watered, and that the concentration of digoxin within the plant dry mass was enhanced by 11% under well-watered conditions and by 14% under conditions of water stress, after which Stuhlfauth and Fock (1990) obtained similar results in a field study, with a near-tripling of the air's CO2 content leading to a 75% increase in plant dry weight production per unit land area and a 15% increase in digoxin per unit dry weight of plant material, which resulted in an actual doubling of total digoxin yield per hectare of cultivated land.



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Effects of Increased C02 on Woody Plant Pests Print E-mail
Written by Staff   
Wednesday, 29 January 2014 18:26

Insect pests have greatly vexed earth's trees and shrubs in the past; and they may continue to do so in the future. But the question arises: Will the anticipated increase in the atmosphere's CO2 content exacerbate, ameliorate or have no effect on this phenomenon? In the paragraphs below, the results of several studies that address this important question are described and discussed, as they pertain to woody plants other than oak and maple trees, which are addressed separately in similar reports.



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The Scientific Method Print E-mail
Written by Vincent Gray   
Wednesday, 22 January 2014 07:20

Science is supposed to take place by the use of the “Scientific Method” defined in the following way.

THE FREE DICTIONARY “The principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to demonstrate the truth or falseness of the hypothesis, and a conclusion that validates or modifies the hypothesis”



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Judith Curry's Statement to the Committee on Environment and Public Works of the US Senate Print E-mail
Written by Dr. Judith Curry   
Monday, 20 January 2014 20:13

I am increasingly concerned that both the climate change problem and its solution have been vastly oversimplified. My research on understanding the dynamics of uncertainty at the climate science-policy interface has led me to question whether these dynamics are operating in a manner that is healthy for either the science or the policy process.[1] I see a growing gap between what science is currently providing in terms of information about climate variability and change, and the information needed to understand and manage associated risks. – Dr. Judith Curry



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Risking Lives to Promote Climate Change Hype Print E-mail
Written by Paul Driessen   
Thursday, 16 January 2014 17:52

Will global warming alarmists ever set aside their hypotheses, hyperbole, models and ideologies long enough to acknowledge what is actually happening in the real world outside their windows? Will they at least do so before setting off on another misguided adventure? Before persuading like-minded or naïve people to join them? Before forcing others to risk life and limb to transport – and rescue – them? If history is any guide, the answer is: Not likely.



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Global Hurricane Trends Print E-mail
Written by Staff   
Thursday, 16 January 2014 17:41

Climate models have long suggested that the intensity and frequency of hurricanes or tropical cyclones (TCs) may be significantly increased in response to global warming, as noted by Free et al. (2004), who have written that "increases in hurricane intensity are expected to result from increases in sea surface temperature and decreases in tropopause-level temperature accompanying greenhouse warming," citing in support of this statement the studies of Emanuel (1987), Henderson-Sellers et al. (1998) and Knutson et al. (1998). Before accepting this climate-model-based projection, however, it is important to see what the world of nature has to say about the issue.



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Water Use Efficiency of Trees Print E-mail
Written by Staff   
Tuesday, 14 January 2014 20:17

The effect of elevated atmospheric CO2 concentrations on the water-use efficiencies of trees is clearly positive, having been documented in a number of different single-species studies of longleaf pine (Runion et al., 19991), red oak (Anderson and Tomlinson, 19982), scrub oak (Lodge et al., 20013), silver birch (Rey and Jarvis, 19984), beech (Bucher-Wallin et al., 20005; Egli et al., 19986), sweetgum (Gunderson et al., 20027; Wullschleger and Norby, 20018) and spruce (Roberntz and Stockfors, 19989). Likewise, in a multi-species study performed by Tjoelker et al. (1998)10, seedlings of quaking aspen, paper birch, tamarack, black spruce and jack pine, which were grown at 580 ppm CO2 for three months, displayed water-use efficiencies that were 40 to 80% larger than those exhibited by their respective controls grown at 370 ppm CO2.

Similar results have also been obtained when trees were exposed to different environmental stresses. In a study conducted by Centritto et al. (1999)11, for example, cherry seedlings grown at twice-ambient levels of atmospheric CO2 displayed water-use efficiencies that were 50% greater than their ambient controls, regardless of soil moisture status. And in the study of Wayne et al. (1998)12, yellow birch seedlings grown at 800 ppm CO2 had water-use efficiencies that were 52 and 94% greater than their respective controls, while simultaneously subjected to uncharacteristically low and high air temperature regimes, respectively.



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Game Over! The IPCC Quietly Concedes Defeat Print E-mail
Written by Christopher Monckton of Brenchley   
Sunday, 05 January 2014 12:45

You couldn’t make it up. A Russian “Antarctic research vessel” carrying not diligent scientific researchers but 74 taxpayer-funded climate extremists on a junket to help them make up headlines about sea ice melting because of “global warming” finds itself stuck in – er – sea ice. And sea ice in high summer at that. The extremists, as so often happens, had believed their own propaganda. They had believed Al Gore. They had believed, poor saps, that Antarctica was warming and melting. It isn’t.



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Potential Inaccuracies of Assessing Temperature Trends Print E-mail
Written by Staff   
Friday, 03 January 2014 18:28

Over the years, a large number of potential problems associated with various ways of assessing the temperatures of diverse types of land cover have been identified; and several of them are briefly described, with an emphasis on demonstrating the great difficulty of obtaining various surface-specific sets of annual near-surface air temperature which - when combined for the earth as a whole - yield a set of yearly mean values that accurately represents the mean near-surface thermal history of the planet well enough to determine whether or not the earth may be warming at the rate that is typically predicted by climate model assessments of the greenhouse effect of the CO2 emitted to the atmosphere as a consequence of mankind's utilization of fossil fuels, such as coal, gas and oil.



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Historical Global Temperature Trends Print E-mail
Written by Staff   
Sunday, 29 December 2013 16:34

It has been claimed that the last decade of the 20th century was the warmest of the past hundred years and possibly the warmest of the entire past millennium (Mann et al., 1998, 1999). It has also been claimed that this observation is a cause for much concern, because the temperatures in question are supposedly so unprecedented. In fact, those who would have us believe that these supposedly high air temperatures are the result of anthropogenic CO2 emissions resulting from the burning of fossil fuels contend that the near-surface air temperature of the planet is currently so high that we must radically reformulate the energetic basis of the entire industrialized world in order to avoid a host of unwanted climatic consequences. But is this climatic characterization correct? ... and is its adherents' call to action truly prudent?



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Can Migrating Plants Move Fast Enough to Avoid Projected Extinctions from Global Warming? Print E-mail
Written by Staff   
Thursday, 19 December 2013 18:05

One of the great horror stories associated with predictions of CO2-induced global warming is that the warming will be so fast and furious that many species of plants will not be able to migrate towards cooler regions - poleward in latitude, or upward in elevation - at rates that are rapid enough to avoid extinction. This claim may sound logical enough ... but is it true?



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Biospheric Productivity of China Deserts Print E-mail
Written by Staff   
Wednesday, 11 December 2013 18:07

Climate alarmists are continually warning about the potentially-catastrophic negative consequences of CO2-induced global warming, which they contend will wreak havoc with Earth's natural and agro-ecosystems. In this summary we thus review how deserts have fared throughout China in response to rising air temperatures and atmospheric CO2 concentrations, which climate alarmists characterize as unprecedented over thousands of years (in the case of temperature) to millions of years (in the case of CO2 concentration).



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Historical Temperature Trends in Asia Print E-mail
Written by Staff   
Wednesday, 04 December 2013 00:00

At a time when we're told that the world is hotter than it's been over the past thousand or more years, this information is not exactly what one would expect to hear, unless, of course, the claim is wrong. And, in fact, that is what it appears to be; for a number of real-world (as opposed to climate-model) studies provide evidence that Asian temperatures during the first half of the past century and earlier were sometimes much warmer than they have been over the past couple of decades. And some of them suggest that temperature trends of the past few decades have actually been negative, rather than positive.



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