I added the hyperlinks to Javier’s comment. The last two items on his list emphasize a benign aspect of the warming we’ve experienced since the late 1970s. After all, cold temperatures are far deadlier than warm temperatures.
Here is a disclaimer: my use of the term “global warming” refers to the fact that averages of measured temperatures have risen in a few fits and starts over the past four decades. I do not use the term to mean a permanent trend induced by human activity, since that time span is very short in climatological terms, and the observed increase is well within the historical range of natural variation.
Few seem aware that the surface temperature record is plagued by an obvious issue: the siting of most weather stations in urban environments. In fact, urban weather stations account for 82% of total stations in the U.S., as Jim Steele writes of “Our Urban ‘Climate Crisis’“. Temperatures run hot in cities due to the heat-absorbing characteristics of building materials and the high proportion of impervious ground cover. And some stations well outside of metropolitan areas are also situated near concrete and pavement. There is little doubt that urbanization and thoughtless siting decisions for weather stations have corrupted temperature measurements and exaggerated surface warming trends.
Hot summer days always arouse expressions of climate alarm. However, increases in summer temperatures, and daytime temperatures, have been relatively modest compared to increases in winter and nighttime temperatures. In Roy Spencer’s post, (also linked above), he reports that 80% of the U.S. warming observed by a NASA satellite system (AIRS) from September 2002 to March 2019 occurred at night.
Of course, climate alarmists also claim that global warming makes temperatures more volatile. So, they argue, there are now more very hot days even if the change in the average summer temperature is modest. The facts do not support that claim, however. Indeed, the world has experienced less temperature volatility as global temperatures have risen. And less extreme weather, as it happens, is contrary to another theme in the warmest narrative.
There is some reason to believe that the relative increase in nighttime temperature is connected to the urban heat island effect. Pavement, concrete, and other materials retain heat overnight. Thus, increasing urbanization leads to nighttime temperatures that do not fall from their daily highs as much as they did a few decades back. The magnification of daytime heating is not as pronounced as the effect of retained heat overnight, which causes the diurnal temperature range to decrease. But I should note that some rural farmers insist that nighttime lows have increased relative to daytime highs there as well, and Roy Spencer himself is not confident that the satellite temperature data on which his finding was based reflects a strong urban heat island effect.
For perspective, it’s good to remember that we live in the midst of an interglacial period. These are relatively brief, temperate intervals between lengthier glacial periods (see here, and more from Javier here). The current interglacial is well advanced, having begun about 11,700 years ago, but Javier estimates that it could last for another 1,500 years. That would be longer than the historical average. At the peak of the last interglacial period, temperatures were about 2C higher than today and sea levels were 5 meters higher. The last interglacial ended about 120,000 years ago, but the historical average time between interglacials is only about 41,000 years. These low frequency changes in the global climate are generally driven by the Earth’s axial tilt (obliquity), recurring cycles in the shape of our eliptical orbit around the Sun (eccentricity), and the Earth’s solar exposure (insolation) and albedo.
Biased surface temperature records have both inspired and reinforced the sense of panic surrounding global warming. Few observers seem to understand the existence of a strong bias, let alone its source: the urban heat island effect. And few seem to realize that most of the warming we’ve experienced since the 1970s has occurred at night, not during the day, and that these changes are well within the range of natural variation. Dramatic climate change happens at both long and short time scales for reasons that are largely astronomical. The lengthy historical record accumulated by paleoclimatologists shows that current concerns over global warming are exaggerated. I’m quite confident that mankind will find ways to adapt to climate change in either direction, but some global warming might be beneficial once the next glacial period begins.
I’m not terribly surprised to learn that scientific advancement has slowed over my lifetime. A recent study published in the journal Nature documented a secular decline in the frequency of “disruptive” or “breakthrough” scientific research across a range of fields. Research has become increasingly dominated by “incremental” findings, according to the authors. The graphic below tells a pretty dramatic story:
The index values used in the chart range “from 1 for the most disruptive to -1 for the least disruptive.” The methodology used to assign these values, which summarize academic papers as well as patents, produces a few oddities. Why, for example, does the tech revolution of the last 40 years create barely a blip in the technology index in the chart above? And why have tech research and social science research always been more “disruptive” than other fields of study?
Putting those questions aside, the Nature paper finds trends that are basically consistent across all fields. Apparently, systematic forces have led to declines in these measures of breakthrough scientific findings. The authors try to provide a few explanations as to the forces at play: fewer researchers, incrementalism, and a growing role of large-team research that induces conformity. But if research has become more incremental, that’s more accurately described as a manifestation of the disease, rather than a cause.
Conformity
Steven F. Hayward skewers the authors a little, and perhaps unfairly, stating a concern held by many skeptics of current scientific practices. Hayward says the paper:
“… avoids the most significant and obvious explanation with the myopia of Inspector Clouseau, which is the deadly confluence of ideology and the increasingly narrow conformism of academic specialties.”
Conformism in science is nothing new, and it has often interfered with the advancement of knowledge. The earliest cases of suppression of controversial science were motivated by religious doctrine, but challenges to almost any scientific “consensus” seem to be looked upon as heresy. Several early cases of suppression are discussed here. Matt Ridley has described the case of Mary Worley Montagu, who visited Ottoman Turkey in the early 1700s and witnessed the application of puss from smallpox blisters to small scratches on the skin of healthy subjects. The mild illness this induced led to immunity, but the British medical establishment ridiculed her. A similar fate was suffered by a Boston physician in 1721. Ridley says:
“Conformity is the enemy of scientific progress, which depends on disagreement and challenge. Science is the belief in the ignorance of experts, as [the physicist Richard] Feynman put it.”
When was the Scientific Boom?
I couldn’t agree more with Hayward and Ridley on the damaging effects of conformity. But what gave rise to our recent slide into scientific conformity, and when did it begin? The Nature study on disruptive science used data on papers and patents starting in 1945. The peak year for disruptive science within the data set was … 1945, but the index values were relatively high over the first two decades of the data set. Maybe those decades were very special for science, with a variety of applications and high-profile accomplishments that have gone unmatched since. As Scott Sumner says in an otherwise unrelated post, in many ways we’ve failed to live up to our own expectations:
“In retrospect, the 1950s seem like a pivotal decade. The Boeing 707, nuclear power plants, satellites orbiting Earth, glass walled skyscrapers, etc., all seemed radically different from the world of the 1890s. In contrast, airliners of the 2020s look roughly like the 707, we seem even less able to build nuclear power plants than in the 1960s, we seem to have a harder time getting back to the moon than going the first time, and we still build boring glass walled skyscrapers.”
It’s difficult to put the initial levels of the “disruptiveness” indices into historical context. We don’t know whether science was even more disruptive prior to 1945, or how the indices used by the authors of the Nature article would have captured it. And it’s impossible to say whether there is some “normal” level of disruptive research. Is a “normal” index value equal to zero, which we now approach as an asymptote?
Some incredible scientific breakthroughs occurred decades before 1945, to take Einstein’s theory of relativity as an obvious example. Perhaps the index value for physical sciences would have been much higher at that time, were it measured. Whether the immediate post-World War II era represented an all-time high in scientific disruption is anyone’s guess. Presumably, the world is always coming from a more primitive base of knowledge. Discoveries, however, usually lead to new and deeper questions. The authors of the Nature article acknowledge and attempt to test for the “burden” of a growing knowledge base on the productivity of subsequent research and find no effect. Nevertheless, it’s possible that the declining pattern after 1945 represents a natural decay following major “paradigm shifts” in the early twentieth century.
The Psychosis Now Known As “Wokeness”
The Nature study used papers and patents only through 2010. Therefore, the decline in disruptive science predates the revolution in “wokeness” we’ve seen over the past decade. But “wokeness” amounts to a radicalization of various doctrines that have been knocking around for years. The rise of social justice activism, critical theory, and anthropomorphic global warming theology all began long before the turn of the century and had far reaching effects that extended to the sciences. The recency of “wokeness” certainly doesn’t invalidate Hayward and Ridley when they note that ideology has a negative impact on research productivity. It’s likely, however, that some fields of study are relatively immune to the effects of politicization, such as the physical sciences. Surely other fields are more vulnerable, like the social sciences.
Citations: Not What They Used To Be?
There are other possible causes of the decline in disruptive science as measured by the Nature study, though the authors believe they’ve tested and found these explanations lacking. It’s possible that an increase in collaborative work led to a change in citation practices. For example, this study found that while self-citation has remained stable, citation of those within an author’s “collaboration network” has declined over time. Another paper identified a trend toward citing review articles in Ecology Journals rather than the research upon which those reviews were based, resulting in incorrect attribution of ideas and findings. That would directly reduce the measured “disruptiveness” of a given paper, but it’s not clear whether that trend extends to other fields.
Believe it or not, “citation politics” is a thing! It reflects the extent to which a researcher should suck-up to prominent authors in a field of study, or to anyone else who might be deemed potentially helpful or harmful. In a development that speaks volumes about trends in research productivity, authors are now urged to append a “Citation Diversity Statement” to their papers. Here’s an academic piece addressing the subject of “gendered citation practices” in contemporary physics. The 11 authors of this paper would do well to spend more time thinking about problems in physics than in obsessing about whether their world is “unfair”.
Science and the State
None of those other explanations are to disavow my strong feeling that science has been politicized and that it is harming our progress toward a better world. In fact, it usually leads us astray. Perhaps the most egregious example of politicized conformism today is climate science, though the health sciences went headlong toward a distinctly unhealthy conformism during the pandemic (and see this for a dark laugh).
Politicized science leads to both conformism and suppression. Here are several channels through which politicization might create these perverse tendencies and reduce research productivity or disruptiveness:
Political or agenda-driven research is driven by subjective criteria, rather than objective inquiry and even-handed empiricism
Research funding via private or public grants is often contingent upon whether the research can be expected to support the objectives of the funding NGOs, agencies, or regulators. The gravy train is reserved for those who support the “correct” scientific narrative
Promotion or tenure decisions may be sensitive to the political implications of research
Government agencies have been known to block access to databases funded by taxpayers when a scientist wishes to investigate the “wrong questions”
Journals and referees have political biases that may influence the acceptance of research submissions, which in turn influences the research itself
The favorability of coverage by a politicized media influences researchers, who are sensitive to the damage the media can do to one’s reputation
The chance that one’s research might have a public policy impact is heavily influenced by politics
The talent sought and/or attracted to various fields may be diminished by the primacy of political considerations. Indoctrinated young activists generally aren’t the material from which objective scientists are made
Conclusion
In fairness, there is a great deal of wonderful science being conducted these days, despite the claims appearing in the Nature piece and the politicized corruption undermining good science in certain fields. Tremendous breakthroughs are taking place in areas of medical research such as cancer immunotherapy and diabetes treatment. Fusion energy is inching closer to a reality. Space research is moving forward at a tremendous pace in both the public and private spheres, despite NASA’s clumsiness.
I’m sure there are several causes for the 70-year decline in scientific “disruptiveness” measured in the article in Nature. Part of that decline might have been a natural consequence of coming off an early twentieth-century burst of scientific breakthroughs. There might be other clues related to changes in citation practices. However, politicization has become a huge burden on scientific progress over the past decade. The most awful consequences of this trend include a huge misallocation of resources from industrial planning predicated on politicized science, and a meaningful loss of lives owing to the blind acceptance of draconian health policies during the Covid pandemic. When guided by the state or politics, what passes for science is often no better than scientism. There are, however, even in climate science and public health disciplines, many great scientists who continue to test and challenge the orthodoxy. We need more of them!
I leave you with a few words from President Dwight Eisenhower’s Farewell Address in 1961, in which he foresaw issues related to the federal funding of scientific research:
“Akin to, and largely responsible for the sweeping changes in our industrial-military posture, has been the technological revolution during recent decades.
In this revolution, research has become central; it also becomes more formalized, complex, and costly. A steadily increasing share is conducted for, by, or at the direction of, the Federal government.
Today, the solitary inventor, tinkering in his shop, has been over shadowed by task forces of scientists in laboratories and testing fields. In the same fashion, the free university, historically the fountainhead of free ideas and scientific discovery, has experienced a revolution in the conduct of research. Partly because of the huge costs involved, a government contract becomes virtually a substitute for intellectual curiosity. For every old blackboard there are now hundreds of new electronic computers.
The prospect of domination of the nation’s scholars by Federal employment, project allocations, and the power of money is ever present and is gravely to be regarded.
Yet, in holding scientific research and discovery in respect, as we should, we must also be alert to the equal and opposite danger that public policy could itself become the captive of a scientific-technological elite.”
Appeals to reason and logic are worthless in dealing with fanatics, so it’s too bad that matters of public policy are so often subject to fanaticism. Nothing is more vulnerable on this scale than climate policy. Why else would anyone continue to listen to prognosticators of such distinguished failure as Paul Ehrlich? Perhaps most infamously, his 1970s forecasts of catastrophe due to population growth were spectacularly off-base. He’s a man without any real understanding of human behavior and how markets deal efficiently and sustainably with scarcity. Here’sa little more detail on his many misfires. And yet people believe him! That’s blind faith.
The foolish acceptance of chicken-little assertions leads to coercive and dangerous policy prescriptions. These are both unnecessary and very costly in direct and hidden ways. But we hear a frantic chorus that we’d better hurry or… we’re all gonna die! Ironically, the fate of the human race hardly matters to the most radical of the alarmists, who are concerned only that the Earth itself be in exactly the same natural state that prevailed circa 1800. People? They don’t belong here! One just can’t take this special group of fools too seriously, except that they seem to have some influence on an even more dangerous group of idiots called policymakers.
Judith Curry, an esteemed but contrarian climate expert, writes of the “faux urgency” of climate action, and how the rush to implement supposed climate mitigations is a threat to our future:
“Rapid deployment of wind and solar power has invariably increased electricity costs and reduced reliability, particularly with increasing penetration into the grid. Allegations of human rights abuses in China’s Xinjiang region, where global solar voltaic supplies are concentrated, are generating political conflicts that threaten the solar power industry. Global supply chains of materials needed to produce solar and wind energy plus battery storage are spawning new regional conflicts, logistical problems, supply shortages and rising costs. The large amount of land use required for wind and solar farms plus transmission lines is causing local land use conflicts in many regions.”
Curry also addresses the fact that international climate authorities have “moved the goalposts” in response to the realization that the so-called “crisis” is not nearly as severe as we were told not too long ago. And she has little patience for delusions that authorities can reliably force adjustments in human behavior so as to to reduce weather disasters:
“Looking back into the past, including paleoclimatic data, there has been more extreme weather [than today] everywhere on the planet. Thinking that we can minimize severe weather through using atmospheric carbon dioxide as a control knob is a fairy tale.”
The lengths to which interventionists are willing to go should make consumer/taxpayers break out their pitchforks. It’s absurd to entertain mandates forcing vehicles powered by internal combustion engines (ICEs) off the road, and automakers know it. Recently, the head of Toyota Motors acknowledged his doubts that electric vehicles (EVs) can meet our transportation demands any time soon:
“People involved in the auto industry are largely a silent majority. That silent majority is wondering whether EVs are really OK to have as a single option. But they think it’s the trend so they can’t speak out loudly. Because the right answer is still unclear, we shouldn’t limit ourselves to just one option.”
In the same article, another Toyota executive says that neither the market nor the infrastructure is ready for a massive transition to EVs, a conclusion only a dimwit could doubt. Someone should callthe Big 3 American car companies!
No one is a bigger cheerleader for EVs than Elon Musk. In the article about Toyota, he is quoted thusly:
“At this time, we actually need more oil and gas, not less. Realistically I think we need to use oil and gas in the short term, because otherwise civilization will crumble. One of the biggest challenges the world has ever faced is the transition to sustainable energy and to a sustainable economy. That will take some decades to complete.”
Of course, for the foreseeable future, EVs will be powered primarily by electricity generated from burning fossil fuels. So why the fuss? But as one wag said, that’s only until the government decides to shut down those power plants. After that, good luck with your EV!
Gas stoves are a new target of our energy overlords, but this can’t be about fuel efficiency, and it’s certainly not about the quality of food preparation. The claim by an environmental think tank called “Carbon-Free Buildings” is that gas stoves are responsible for dangerous indoor pollutants. Of course, the Left was quick to rally around this made-up problem, despite the fact that they all seem to use gas stoves and didn’t know anything about the issue until yesterday! And, they insist, racial minorities are hardest hit! Well, they might consider using exhaust fans, but the racialist rejoinder is that minorities aren’t adequately informed about the dangers and mitigants. Okay, start a safe-use info campaign, but keep government away from an embedded home technology that is arguably superior to the electric alternative in several respects.
“Worldwide average solar natural capacity factor (CF) reaches about ~11-13%. Best locations in California, Australia, South Africa, Sahara may have above 25%, but are rare. (see www.globalsolaratlas.info, setting direct normal solar irradiance)
Worldwide average wind natural capacity factors (CF) reach about ~21-24%. Best off-shore locations in Northern Europe may reach above 40%. Most of Asia and Africa have hardly any usable wind and the average CF would be below 15%, except for small areas on parts of the coasts of South Africa and Vietnam. (see www.globalwindatlas.info, setting mean power density)”
Those CFs are natural capacity factors (i.e., the wind doesn’t always blow or blow at “optimal” speeds, and the sun doesn’t always shine or shine at the best angle), The CFs don’t even account for “non-natural” shortfalls in actual utilization and other efficiency losses. It would be impossible for investors to make these technologies profitable without considerable assistance from taxpayers, but they couldn’t care less about whether their profits are driven by markets or government fiat. You see, they really aren’t capitalists. They are rent seekers playing a negative-sum game at the expense of the broader society.
There are severe environmental costs associated with current wind and solar technologies. Awful aesthetics and the huge inefficiencies of land use are bad enough. Then there are deadly consequences for wildlife. Producing inputs to these technologies requires resource-intensive and environmentally degrading mining activities. Finally, the costs of disposing of spent, toxic components of wind turbines and solar panels are conveniently ignored in most public discussions of renewables.
There is still more hypocritical frosting on the cake. Climate alarmists are largely opposed to nuclear power, a zero-carbon and very safe energy source. They also fight to prevent development of fossil fuel energy plant for impoverished peoples around the world, which would greatly aid in economic development efforts and in fostering better and safer living conditions. Apparently, they don’t care. Climate activists can only be counted upon to insist on wasteful and unreliable renewable energy facilities.
Before concluding, it’s good to review just a few facts about the “global climate”:
1) the warming we’ve seen in forecasts and in historical surface temperature data has been distorted by urban heat island effects, and weather instruments are too often situated in local environments rich in concrete and pavement.
2) Satellite temperatures are only available for the past 43 years, and they have to be calibrated to surface measurements, so they are not independent measures. But the trend insatellite temperatures over the past seven years has been flat or negative at a time when global carbon emissions are at all-time highs.
3) There have been a series of dramatic adjustments to historical data that have “cooled the past” relative to more recent temperatures.
4) The climate models producing catastrophic long-term forecasts of temperatures have proven to be biased to the high side, having drastically over-predicted temperature trends over the past two- to three decades.
5) Sea levels have been rising for thousands of years, and we’ve seen an additional mini-rebound since the mini-ice age of a few hundred years ago. Furthermore, the rate of increase in sea levels has not accelerated in recent decades, contrary to the claims of climate alarmists.
6) Storms and violent weather have shown no increase in frequency or severity, yet models assure us that they must!
Despite these facts, climate change fanatics will only hear of climate disaster. We should be unwilling to accept the climatological nonsense now passing for “settled science”, itself a notion at odds with the philosophy of science. I’m sad to say that climate researchers are often blinded by the incentives created by publication bias and grant money from power-hungry government bureaucracies and partisan NGOs. They are so blinded, in fact, that research within the climate establishment now almost completely ignores the role of other climatological drivers such as the solar irradiance, volcanic activity, and the role and behavior of atmospheric aerosols. Yes, only the global carbon dial seems to matter!
No one is more sympathetic to “the kids” than me, and I’m sad that so much of the “fan base” for climate action is dominated by frightened members of our most youthful generations. It’s hard to blame them, however. Their fanaticism has been inculcated by a distinctly non-scientific community of educators and journalists who are willing to accept outrageous assertions based on “toy models” concocted on weak empirical grounds. That’s not settled science. It’s settled propaganda.
Lately almost any passing weather phenomenon is said to have been rooted in climate change and higher carbon concentrations. The recent heatwaves that seared parts of Europe and the U.S. are no exception, and climate change activists always find heat spells ripe for rhetorical exploitation. But while these would-be Cassandras and Gretas push their fearful narrative, there are strong reasons to doubt that these weather events are any cause for alarm. This summer’s heat waves, like all others, were of limited geographic scope, and they certainly weren’t the most severe heat waves on record in terms of either duration or magnitude. More on that below.
Data Problems
Temperature measurements tend to be exaggerated these days because so many “official” temperature records come from local airports or other urban sites rich in impervious cover and heat absorbing building materials. This gives rise to the so-called “urban heat island effect”, which refers to the elevated temperatures measured in urban versus rural areas. It’s even worse than that, however, as the vast majority of active weather stations in the U.S. are sited at “hot spots”, and many of them are poorly maintained. Data problems plague European temperature records as well.
Furthermore, official temperature records are extremely short on climatological scales, going back only about 150 years in the U.S. And these records have been “adjusted” by weather authorities like the National Oceanographic and Atmospheric Administration (NOAA), usually with the early records “cooled” relative to more recent readings. That means the long-term trend in temperatures is biased upward.
Climate Catastrophists
Nevertheless, Joe Biden has been threatening to declare a wholly unjustified “climate emergency“, perhaps thinking these dog days are the perfect time to assume a host of new emergency powers. It’s unclear whether the new “Build Back” bill making its way through Congress will be enough to satisfy the appetite of Biden’s handlers for costly and ultimately ineffective climate measures.
It’s tempting to think delirium from the heat waves is what prompted Al Gore to compare climate change skeptics to the dithering police officers in Uvalde, TX, but Gore’s fever is nothing new. We’re still waiting for the world to end, which he once predicted would occur by 2016.
Even weather reporters on TV are breathless in their descriptions of the heatwaves. They’ve certainly become dramatists for the climate-change cause. And people love good scare stories. It gives them an excuse to polish up their pitchforks! Or to be lazy and stay inside. It’s telling that so many people now quote heat index values (which combine heat and humidity), rather than actual temperatures, in the warm summer months. After all, it’s more thrilling to say it’s 105 outside than it is to say 95.
Anyway, compare the paired maps in each of the graphics below (here are links to sources for the first and second):
The temperatures are comparable, but the use of RED colors on the 2022 maps is so much more frightening!This post from Anthony Watts provides a list of links to news sources taking alarmist perspectives on the heatwaves in the U.S. and Europe, and falsely attributing the heatwaves to CO2.
Same Old High Pressure Domes
Cliff Mass offers a bone to the climate change community. He thinks perhaps 5% – 10% of the recent temperature anomaly in the UK is attributable to greenhouse gases. An effect of that magnitude is hardly worthy of government action, let alone panic. Mass says:
“Natural variability of the atmosphere was the proximate cause of the warmth and does not represent an existential threat to the population of Europe.”
The heat wave phenomenon is typical of slow-moving high-pressure systems that often develop during the summer months. These domes of high pressure vary in temperature and geographic breadth, and they are sandwiched between or adjacent to low-pressure systems with cooler temperatures. That’s been the case in both Europe and the U.S. during this summer’s heat waves, as illustrated by the following graphics, The northern hemisphere is not entirely enveloped in a heat wave.
And the rest of the globe? In the tropics (below 20 degrees latitude), June 2022 was the coolest June in 22 years, according to satellite temperature readings! Furthermore, the monthly anomaly in June was the coolest in 10 years. In the Southern Hemisphere, Australia and South America have had extremely cold winters. Antarctica had its coldest winter on record in 2021. Yet Joe Biden is under the misapprehension that we’re experiencing “a climate emergency”.
These are not the worst heat waves on record. Both the U.S. and Europe experienced higher temperatures and prolonged heat waves during the 1930s. For example, St.Louis, Missouri matched or exceeded 110 degrees four times in the 1930s, and twice in 1954, whereas the city topped out at 102 so far this year, and that was after a cool spring. There was an extreme European heat wave in 1976 that was drier and much lengthier, and others occurred in 1911 and 1906. Of course, available temperature comparisons are distorted because the early readings weren’t as impacted by urban heat islands. There are historical accounts of drastic heat waves much earlier, such as the 1500s and 1700s. Here is more heatwave history, in case you’re interested.
We’ll Be Fine
Heat isn’t the only story, of course. A wide range of other disastrous events are blamed on climate change. Wildfires are a prime example, but as we know, wildfires are not new, and the worst wildfires have more to do with poor forest management than anything else. Likewise, there is little if any association between extreme weather events and climate change. In that context, it’s also worth noting that cold weather is much deadlier than hot weather. The climate today, and going forward, presents far fewer dangers to humanity than in the past.
I did a lot of dirty, outdoor work in my youth, and it was hot! There were times just as hot as this summer, if not worse, I’d venture to say. Anyone old enough to have lived through the 1970s or even the 1950s should recognize the heatwave Chicken Littles as such.
What we hear regarding the dangers of climate change is based on predictions of future atmospheric carbon concentrations and corresponding predictions of global temperatures. Those predictions are not “data” in the normal, positive sense. They do not represent “the way things are” or “the way things have been”, though one might hope the initial model conditions align with reality. Nor can the predictions be relied upon as “the way things will be”. Climate scientists normally report a range of outcomes produced by models, yet we usually hear only one type of consequence for humanity: catastrophe!
Models Are Not Reality
The kinds of climate models quoted by activists and by the UN’s Intergovernmental Panel on Climate Change (IPCC) have been around for decades. Known as “carbon forcing” models, they are highly simplified representations of the process determining global temperatures. The primary forecast inputs are atmospheric carbon concentrations over time, which again are themselves predictions.
It’s usually asserted that climate model outputs should guide policy, but we must ask: how much confidence can we have in the predictions to allow government to take coercive actions having immediate, negative impacts on human well being? What evidence can be marshaled to show prospective outcomes under proposed policies? And how well do these models fit the actual, historical data? That is, how well do model predictions track our historical experience, given the historical paths of inputs like carbon concentrations?
Faulty Inputs
The IPCC has been defining and updating sets of carbon scenarios since 1990. The scenarios outline the future paths of greenhouse gas emissions (and carbon forcings). They were originally based on economic and demographic modeling before an apparent “decision by committee” to maintain consistency with scenarios issued in the past. Roger Pielke Jr. and Justin Ritchie describe the evolution of this decision process, and they call for change:
“Our research (and that of several colleagues) indicates that the scenarios of greenhouse gas (GHG) emissions through the end of the twenty-first century are grounded in outdated portrayals of the recent past. Because climate models depend on these scenarios to project the future behavior of the climate, the outdated scenarios provide a misleading basis both for developing a scientific evidence base and for informing climate policy discussions. The continuing misuse of scenarios in climate research has become pervasive and consequential—so much so that we view it as one of the most significant failures of scientific integrity in the twenty-first century thus far. We need a course correction.”
One would certainly expect the predicted growth of atmospheric carbon to evolve over time. However, as Pielke and Ritchie note, the IPCC’s baseline carbon scenario today, known as RCP8.5 (“Representative Concentration Pathway”), is remarkably similar to the “business as usual” (BAU) scenario it first issued in 1990:
“The emissions scenarios the climate community is now using as baselines for climate models depend on portrayals of the present that are no longer true. And once the scenarios lost touch with reality, so did the climate, impact, and economic models that depend on them for their projections of the future. Yet these projections are a central part of the scientific basis upon which climate policymakers are now developing, debating, and adopting policies.”
The authors go on to discuss a few characteristics of the BAU scenario that today seem implausible, including:
“… RCP8.5 foresees carbon dioxide emissions growing rapidly to at least the year 2300 when Earth reaches more than 2,000 ppm of atmospheric carbon dioxide concentrations. But again, according to the IEA and other groups, fossil energy emissions have likely plateaued, and it is plausible to achieve net-zero emissions before the end of the century, if not much sooner.”
Pielke and Ritchie demonstrate that the IPCC’s baseline range of carbon emissions by 2045 is centered well above (actually double) the mid-range of scenarios developed by the International Energy Agency (IEA), and there is very little overlap between the two. However, global carbon emissions have been flat over the past decade. Even if we extrapolate the growth in atmospheric CO2 parts per million over the past 20 years, it would rise to less than 600 ppm by 2100, not 1,200 ppm. It’s true that a few countries (China comes to mind) continue to exploit less “carbon efficient” energy resources like coal, but the growth trend in concentrations is likely to continue to taper over time.
It therefore appears that the IPCC’s climate scenarios, which are used broadly as model inputs by the climate research community, are suspect. As one might suspect: garbage in, garbage out. But what about the climate models themselves?
Faulty Models
The model temperature predictions have been grossly in error. They have been and continue to be “too hot”. The chart at the top of this post is typical of the comparisons of model projections and actual temperatures. Before the year 2000, most of the temperature paths projected by the particular model charted above ran higher than actual temperatures. However, the trends subsequently diverged and the gap has become more extreme over the past two decades.
The problem is not merely one of faulty inputs. The models themselves are deeply flawed, as they fail to account adequately for natural forces that strongly influence our climate. It’s been clear for many years that the sun’s radiative energy has a massive impact on temperatures, and it is affected not only by the intensity of the solar cycle but also by cloud cover on Earth. Unfortunately, carbon forcing models do not agree on the role that increased clouds might have in amplifying warming. However, a reduction in cloud cover over the past 20 years, and a corresponding increase in radiative heat, can account for every bit of the warming experienced over that time.
This finding not only offers an alternative explanation for two decades of modest warming, it also strikes at the very heart of the presumed feedback mechanism usually assumed to amplify carbon-induced warming. The overall effect is summarized by the so-called carbon sensitivity, measured as the response of global temperature to a doubling of carbon concentration. The IPCC puts that sensitivity in a range of 1.5C to 4.5C. However,findings published by Nic Lewis and Judith Curry are close to the low end of that range, as are those found by Frank Bosse reported here. The uncertainties surrounding the role of cloud cover and carbon sensitivities reveal that the outputs relied upon by climate alarmists are extreme model simulations, not the kind of reliable intelligence upon which drastic policy measures should be taken.
The constant anxiety issued from the Left on the issue of climate change, and not a little haranguing of the rest of us, is misplaced. The IPCC’s scenarios for the future paths of carbon concentration are outdated and seriously exaggerated, and they represent a breach of scientific protocol. Yet the scenarios are widely used as the basis of policy discussions at both the domestic and international levels. The climate models themselves embed questionable assumptions that create a bias toward calamitous outcomes.
Yet Drastic Action Is Urged
The UN’s 2021 climate conference, or COP26 (“Conference of the Parties …”) is taking place in Glasgow, Scotland this month. Like earlier international climate conferences, the hope is that dire forecasts will prompt broad agreement on goals and commitments, and that signatory countries will translate these into policy at the national level.
Things got off to a bad start when, before COP26 even began, the G20 nations failed to agree on a goal of “net-zero” carbon emissions by 2050. Another bad portent for the conference is that China and India, both big carbon emitters, will not attend, which must be tremendously disappointing to attendees. After all, COP26 has been billed by Prince Charles himself as “the last chance saloon, literally”, for saving the world from catastrophe. He said roughly the same thing before the Paris conference in 2014. And Joe Brandon … er, Biden, blurted some hyperbole of his own:
“Climate change is already ravaging the world. … It’s destroying people’s lives and livelihoods and doing it every single day. … It’s costing our nations trillions of dollars.”
All this is unadulterated hogwash. But it is the stuff upon which a crisis-hungry media feeds. This hucksterism is but one form of climate rent-seeking. Other forms are much more troubling: scary scenarios and model predictions serve the self-interest of regulators, grant-seeking researchers, interventionist politicians, and green investors who suckle at the public teat. It is a nightmare of scientism fed by the arrogance of self-interested social planners. The renewable energy technologies promoted by these investors, politicians, and planners are costly and land-intensive, providing only intermittent output (requiring backup fossil fuel capacity), and they have nasty environmental consequences of their own.
The precautionary principle is no excuse for the extreme policies advocated by alarmists. We already have economically viable “carbon efficient” and even zero-carbon energy alternatives, such as natural gas, modular nuclear power, and expanded opportunities for exploiting geothermal energy. This argues against premature deployment of wasteful renewables. The real crisis is the threat posed by the imposition of draconian green policies to our long-term prosperity, and especially to the world’s poor.
The world’s gone far astray in attempts to battle climate change through forced reductions in carbon emissions. Last Wednesday, in an outrageously stupid ruling,a Dutch court ordered Royal Dutch Shell to reduce its emissions by 45% by 2030 relative to 2019 levels. It has nothing to do with Shell’s historical record on the environment. Rather, the Court said Shell’s existing climate action plans did not meet “the company’s own responsibility for achieving a CO2 reduction.” The decision will be appealed, but it appears that “industry agreements” under the Netherlands’ Climate Act of 2019 are in dispute.
Later that same day, a shareholder dissident group supporting corporate action on climate change won at least two ExxonMobil board seats. And then we have the story of John Kerry’s effort to stop major banks from lending to the fossil fuel industry. Together with the Biden Administration’s other actions on energy policy, we are witnessing the greatest attack on conventional power sources in history, and we’ll all pay dearly for it.
The Central Planner’s Conceit
Technological advance is a great thing, and we’ve seen it in the development of safe nuclear power generation, but the environmental left has successfully placed roadblocks in the way of its deployment. Instead, they favor the mandated adoption of what amount to beta versions of technologies that might never be economic and create extreme environmental hazards of their own (see here, here, here, and here). To private adopters, green energy installations are often subsidized by the government, disguising their underlying inefficiencies. These premature beta versions are then embedded in our base of productive capital and often remain even as they are made obsolete by subsequent advances. The “putty-clay” nature of technology decisions should caution us against premature adoptions of this kind. This is just one of the many curses of central planning.
Not only have our leftist planners forced the deployment of inferior technologies: they are actively seeking to bring more viable alternatives to ruination. I mentioned nuclear power and even natural gas offer a path for reducing carbon emissions, yet climate alarmists wage war against it as much as other fossil fuels. We have Kerry’s plot to deny funding for the fossil fuel industry and even activist “woke” investors, attempting to override management expertise and divert internal resources to green energy. It’s not as if renewable energy sources are not already part of these energy firms’ development portfolios. Allocations of capital and staff to these projects are usually dependent upon a company’s professional and technical expertise, market forces, and (less propitiously) incentives decreed by the government. Yet, the activist investors are there to impose their will.
Placing Faith and Fate In Models
All these attempts to remake our energy complex and the economy are based on the presumed external costs associated with carbon emissions. Those costs, and the potential savings achievable through the mitigation efforts of government and private greenies around the globe, have been wildly exaggerated.
The first thing to understand about the climate “science” relied upon by the environmental left is that it is almost exclusively model-dependent. In other words, it is based on mathematical relationships specified by the researchers. Their projections depend on those specs, the selection of parameter values, and the scenarios to which they are subjected. The models are usually calibrated to be roughly consistent with outcomes over some historical time period, but as modelers in almost any field can attest, that is not hard to do. It’s still possible to produce extreme results out-of-sample. The point is that these models are generally not estimated statistically from a lengthy sample of historical data. Even when sound statistical methodologies are employed, the samples are blinkingly short on climatological timescales. That means they are highly sample-specific and likely to propagate large errors out-of-sample. But most of these are what might be called “toy models” specified by the researcher. And what are often billed as “findings” are merely projections based on scenarios that are themselves manufactured by imaginative climate “researchers” cum grant-seeking partisans. In fact, it’s much worse than that because even historical climate data is subject to manipulation, but that’s a topic for another day.
Key Assumptions
What follows are basic components of the climate apocalypse narrative as supported by “the science” of man-made or anthropomorphic global warming (AGW):
(A) The first kind of model output to consider is the increase in atmospheric carbon concentration over time, measured in parts per million (PPM). This is a function of many natural processes, including volcanism and other kinds of outgassing from oceans and decomposing biomass, as well absorption by carbon sinks like vegetation and various geological materials. But the primary focus is human carbon generating activity, which depends on the carbon-intensity of production technology. As Ross McKitrick shows (see chart below), projections from these kinds of models have demonstrated significant upside bias over the years. Whether that is because of slower than expected economic growth, unexpected technological efficiencies, an increase in the service-orientation of economic activity worldwide, or feedback from carbon-induced greening or other processes, most of the models have over-predicted atmospheric carbon PPM. Those errors tend to increase with the passage of time, of course.
(B) Most of the models promoted by climate alarmists are carbon forcing models, meaning that carbon emissions are the primary driver of global temperatures and other phenomena like storm strength and increases in sea level. With increases in carbon concentration predicted by the models in (A) above, the next stage of models predicts that temperatures must rise. But the models tend to run “hot.” This chart shows the mean of several prominent global temperature series contrasted with 1990 projections from the Intergovernmental Panel on Climate Change (IPCC).
The following is even more revealing, as it shows the dispersion of various model runs relative to three different global temperature series:
And here’s another, which is a more “stylized” view, showing ranges of predictions. The gaps show errors of fairly large magnitude relative to the mean trend of actual temperatures of 0.11 degrees Celsius per decade.
(C) Climate sensitivity to “radiative forcing” is a key assumption underlying all of the forecasts of AGW. A simple explanation is that a stronger greenhouse effect, and increases in the atmosphere’s carbon concentration, cause more solar energy to be “trapped” within our “greenhouse,” and less is radiated back into space. Climate sensitivity is usually measured in degrees Celsius relative to a doubling of atmospheric carbon.
And how large is the climate’s sensitivity to a doubling of carbon PPM? The IPCC says it’s in a range of 1.5C to 4.5C. However, findings published by Nic Lewis and Judith Curry are close to the low end of that range, and are those found by the author of the paper described here.
In separate efforts, Finnish and Japanese researchers have asserted that the primary cause of recent warming is an increase in low cloud cover, which the Japanese team attributes to increases in the Earth’s bombardment by cosmic rays due to a weakening magnetic field. The Finnish authors note that most of the models used by the climate establishment ignore cloud formation, an omission they believe leads to a massive overstatement (10x) of sensitivity to carbon forcings. Furthermore, they assert that carbon forcings are mainly attributable to ocean discharge as opposed to human activity.
(D) Estimates of the Social Cost of Carbon (SCC) per ton of emissions are used as a rationale for carbon abatement efforts. The SCC was pioneered by economist William Nordhaus in the 1990s, and today there are a number of prominent models that produce distributions of possible SCC values, which tend to have high dispersion and extremely long upper tails. Of course, the highest estimates are driven by the same assumptions about extreme climate sensitivities discussed above. The Biden Administration is using an SCC of $51 per ton. Some recommend the adoption of even higher values for regulatory purposes in order to achieve net-zero emissions at an early date, revealing the manipulative purposes to which the SCC concept is put. This is a raw attempt to usurp economic power, not any sort of exercise in optimization, as this admission from a “climate expert” shows. In the midst of a barrage of false climate propaganda (hurricanes! wildfires!), he tells 60 Minutes that an acceptable limit on warming of 1.5C is just a number they “chose” as a “tipping point.”
As a measurement exercise, more realistic climate sensitivities yield much lower SCCs. McKitrick presents a chart from Lewis-Curry comparing their estimates of the SCC at lower climate sensitivities to an average of earlier estimates used by IPCC:
High levels of the SCC are used as a rationale for high-cost carbon abatement efforts. If the SCC is overstated, however, then costly abatements represent waste. And there is no guarantee that spending an amount on abatements equal to the SCC will eliminate the presumed cost of a ton’s worth of anthropomorphic warming. Again, there are strong reasons to believe that the warming experienced over the past several decades has had multiple causes, and human carbon emissions might have played a relatively minor role.
Crisis Is King
Some people just aren’t happy unless they have a crisis over which to harangue the rest of us. But try as they might, the vast resources dedicated to carbon reduction are largely wasted. I hesitate to say their effort is quixotic because they want more windmills and are completely lacking in gallantry. As McKitrick notes, it takes many years for abatement to have a meaningful impact on carbon concentrations, and since emissions mix globally, unilateral efforts are practically worthless. Worse yet, the resource costs of abatement and lost economic growth are unacceptable, especially when some of the most promising alternative sources of “clean” energy are dismissed by activists. So we forego economic growth, rush to adopt immature energy alternatives, and make very little progress toward the stated goals of the climate alarmists.
People are unaccountably convinced that there is an upward trend in severe weather events due to global warming. But there is no upward trend in the data on either the frequency or severity of those events. Forget, for the moment, the ongoing debate about the true extent of climate warming. In fact, I’ll stipulate that warming has occurred over the past 40 years, though most of it was confined to the jump roughly coincident with two El Ninos in the 1990s; there’s been little if any discernible trend since. But what about the trend in severe weather? I’ve heard people insist that it is true, but a few strong hurricanes do not constitute a trend.
The two charts at the top of this post were created by hurricane expert Ryan N. Maue. I took them from an article by David Middleton., but visit Maue’s web site on tropical cyclone activity for more. The last month plotted is September 2018, so the charts do not account for Hurricane Michael and the 2018 totals are for a partial year. The first nine months of each year typically accounts for about 3/4 of annual tropical cyclones, so 2018 will be a fairly strong year. Nevertheless, the charts refute the contention that there has been an upward trend in tropical cyclone activity. In fact, in the lower chart, the years following the 1990s increase in global temperatures is shown to have been a time a lower cyclone energy. Roy Spencer weighs in on the negative trend in major landfalling hurricanes in the U.S. and Florida stretching over many decades.
Warren Meyer blames ‘”media selection bias” for the mistaken impression of dangerous trends that do not exist. That is, the news media are very likely to report extreme events, as they should, but they are very unlikely to report a paucity of extreme events, no matter how lengthy or unusual the dearth:
“Does anyone doubt that if we were having a record-heavy tornado season, this would be leading every newscast? [But] if a record-heavy year is newsworthy, shouldn’t a record-light year be newsworthy as well? Apparently not.”
It so happens that 2018, thus far, has seen very close to a record low number of tornadoes in the U.S.
Meyer also highlights the frequent use of misleading statistics on the real value of damage from natural disasters. That aggregate value has almost certainly grown over the years, but it had nothing to do with the number or severity of natural disasters. Meyer explains:
“Think about places where there are large natural disasters in the US — two places that come to mind are California fires and coastal hurricanes. Do you really think that the total property value in California or on the US coastline has grown only at inflation? You not only have real estate price increases, but you have the value of new construction. The combination of these two is WAY over the 2-3% inflation rate.”
Recent experiences are always the most vivid in our minds. The same is true of broad impressions drawn from reports on the most recent natural disasters. The drama and tragedy of these events should never be minimized, and the fact that there is no upward trend in cyclone activity is no consolation to victims of those disasters. Still, the media can’t seem to resist the narrative that the threat of such events is increasing, even if it can’t be proven. Indeed, even if it’s not remotely correct. Reporters are human and generally not good at science, and they are not immune to the tendency to exaggerate the significance of events upon which they report. A dangerous, prospective trend is at once scary, exciting, and possibly career-enhancing. As for the public, sheer repetition is enough to convince most people that such a threat is undeniable… that everybody knows it… that the trend is already underway. The fact is that the upward trend in hurricane activity (and other kinds of severe weather) is speculative, not real.
Well-meaning souls innocently parrot the global warming narrative but generally know little of the controversies surrounding its validation, or lack thereof. That includes much of the mainstream media. Every warm day is evidence of global warming. Every cold day is evidence of extreme volatility brought on by climate change. Every big storm, every forest fire, and every endangered species is attributed to warming. The poles are melting, the sea is rising, the sky is falling, and it is mostly bullshit. But in the meantime, the mythology of global warming has become an all-purpose cudgel for state oversight and “redistributive justice”, primarily to the benefit of the “climate change industrial complex. The myths are repeated so frequently that many accept them as facts. Here, I list a few of these myths along with information that should give pause to anyone tempted to take them too seriously.
The science is settled: There are a number of great scientists who dispute the global warming narrative (and see here). But a few studies have claimed incredibly widespread consensus (97%) among scientists that mankind drives climate change. These studies are generally plagued by biased samples of scientists (sometimes including non-scientists), faulty selection and classification of paper abstracts, and direct involvement of climate activists in the research process. These studies tend to present the “consensus” as one side of a stark dichotomy, with no nuance or middle ground for those subscribing to anything less than the inevitability of a warming catastrophe.
Record high temperatures: The temperatures that are almost always reported are surface temperatures that are subject to extreme bias. The most drastic bias is caused by increasing urbanization. Urban weather instruments are often sited in areas with an increasing amount of impervious ground cover, which absorbs sunlight and heat, leading to the so-called “urban heat-island effect”. This has imparted an upward trend in urban temperature readings. Moreover, urban temperature readings tend to be over-sampled in estimates of global surface temperatures, reinforcing the distortions in measured warming.
Melting poles: Arctic sea ice extent has been in modest retreat since 1980, when satellite measurement began to allow more accurate readings. The Antarctic, however, has shown a trend in the other direction, as shown in this piece by Judith Curry. In the same article, Curry shows that specific Arctic locations had less sea ice 6,000 to 8,000 years ago than today. For more complete information on satellite-era trends in sea ice extent, see this informative reference page (scroll way down for Antarctic information). Looks like Al Gore’s dire prediction that the poles would melt by 2007 was just a little off target.
Polar bear extinction: We are constantly seeing warnings of polar bear extinction on social media. Memes feature desperate-looking bears stranded on ice floes, drifting away from their cubs. Perhaps you aren’t supposed to know that polar bears are extremely strong swimmers. Or that the polar bear population is been thriving, increasing by an estimated 10-20% since 2001. So whether or not the past few decades have seen a decline in sea ice, the bears seem be doing just fine.
Desertification: Increases in carbon concentration have not been associated with desertification, as the media seem to have concluded. As noted above, the frequency of drought has been steady to declining. In fact, precipitation data suggests that patterns of variability in rainfall do not square with the predictions of climate models. In fact, the world has seen an increase in green vegetation since 1985, even in arid regions.
Ocean acidification: The reported declines in ocean pH levels over the past few centuries are actually smaller than the normal seasonal variation in pH levels. The presumed negative impact on sea life appears, after all, to be minimal to nonexistent (see the same link).
Higher alpine tree lines: We’ve been waiting. It hasn’t happened, but that hasn’t stopped some activists from stating it as established fact.
Armadillo northward migration: I’ve heard this cited as “proof” of global warming. The range of armadillos extended as far north as southern Missouri and Kansas in the early 1970s, so this isn’t new. In fact, armadillos began their migration northward into the U.S. before the mid-1800s. Some biologists have attributed the migration to warming but acknowledge many other reasons, including more forested habitat in the north and factors such as movement of cattle by rail. Armadillos burrow and are able to keep warm underground in the winter. Of course, a series of warm winters can bring them further north along with other species, but a few cold winters can take a toll on the population and push them south again.
U.S. carbon criminality: U.S. CO2 emissions have been in almost steady decline on a per capita basis for at least seven decades, long before the carbon freak-out began. The declines have resulted largely from the normal market process of competitive efficiency in production. China leads the world in total annual CO2 emissions by a wide margin, about 80% ahead of the U.S. in 2017. Total U.S. emissions actually declined in 2017 for the third straight year, while emissions in China, the EU, and for the world all increased. In fact, China was actually in compliance with its pledge under the Paris Accord despite the increase, so the pledge was not especially ambitious.
High social cost of carbon: The estimates used by the Environmental Protection Agency are plagued by poormethodologyand are subject to great uncertainty. Some studies rely on a series of tenuous causal links, such as CO2 emissions to global temperatures to ice melt to sea level to real dollars of coastal damage many years hence, all without considering variances at each stage, and assuming zero effort to adapt or mitigate damages over long time frames. A shortcut approach relies on historical correlations between temperatures and such measures as heat-related deaths, labor productivity and real output. These estimates extrapolate old relationships to the distant future and ignore the very real human tendency to adapt. The underlying assumptions are undercut by such basic facts as ongoing migration to warmer regions. The estimates also fail to account for the likelihood that warmer weather will improve agricultural productivity.
The public’s interest in climate change has waned, and no wonder: sensible people do not buy hype and demands for sacrifice in the face of contradictory evidence. Revelations of statistical fraudhaveled to even more skepticism. And when your “proof” is founded on model extrapolation, often theoretically-based rather than empirically-based, you’re skating on thin scientific ice. At this link, Steven Hayward has an interesting take on the public’s increasingly jaundiced view of global warming activism:
“Scientists who are genuinely worried about the potential for catastrophic climate change ought to be the most outraged at how the left politicized the issue and how the international policy community narrowed the range of acceptable responses. Treating climate change as a planet-scale problem that could be solved only by an international regulatory scheme transformed the issue into a political creed for committed believers. Causes that live by politics, die by politics.”
Matt Ridley had an interesting piece on his blog last month entitled “Bad News Is Sudden, Good News Is Gradual“. It’s about the timing of news, as stated, and it’s about our bias toward bad news more generally. There is no question that bad news tends to be more dramatic than good news. But with steadily increasingly lifespans, growing prosperity, and world poverty at an all-time low, surely good news must come as much or more frequently than bad. But good news can be inconvenient to certain narratives. It is therefore often ignored, and some other purported disaster is found as a substitute:
“Poverty and hunger are the business Oxfam is in, but has it shouted the global poverty statistics from the rooftops? Hardly. It has switched its focus to inequality. When The Lancet published a study in 2010 showing global maternal mortality falling, advocates for women’s health tried to pressure it into delaying publication ‘fearing that good news would detract from the urgency of their cause’, The New York Times reported. The announcement by Nasa in 2016 that plant life is covering more and more of the planet as a result of carbon dioxide emissions was handled like radioactivity by most environmental reporters.“
Tales of bad outcomes can be alluring, especially if they haven’t happened yet. In fact, bad things might even happen gradually, but dark visions of a world beyond the horizon impart a spooky sense of immediacy, and indeed, urgency. Ridley notes the tendency of people to regard pessimists as “wise”, while optimists are viewed as Pollyannas. And he recognizes that risk aversion plays an important role in this psychology. That brings me to the point I found most interesting in Ridley’s piece: the many vested interests in disasters, and disasters foretold.
Risk management is big business in an affluent society. There is a lot to lose, and a squeamish populace is easily cowed by good scare stories. The risk management and disaster-prevention narrative can be wrapped around any number of unlikely or exaggerated threats, serving the interests of the administrative state and private rent-seekers. One particular tool that has been most useful to this alliance is the precautionary principle. It is invoked to discourage or regulate activities presumed to pose risks to the public or to the environment. But there are three dimensions to the application of the precautionary principle: it provides a rationale for public funding of research into the risk-du-jour, for funding projects designed to mitigate its consequences, and for subsidizing development of alternative technologies that might help avoid or reduce the severity of the risk, often at great expense. The exaggeration of risk serves to legitimize these high costs. Of course, the entire enterprise would be impossible without the machinery of the state, in all its venality. Where money flows, graft is sure to follow.
Well-publicized disaster scenarios are helpful to statists in other ways. Risk, its causes, and its consequences are not distributed evenly across regions and populations. A risk thought to be anthropomorphic in nature implies that wealthier and more productive communities and nations must shoulder the bulk of the global costs of mitigation. Thus, the risk-management ethic requires redistribution. Furthermore, wealthier regions are better situated to insulate themselves locally against many risks. Impoverished areas, on the other hand, must be assisted. Finally, an incredible irony of our preoccupation with disaster scenarios is the simultaneous effort to subsidize those deemed most vulnerable even while executing other policies that harm them.
Media organizations and their newspeople obviously benefit greatly from the subtle sensationalism of creeping disaster. As Ridley noted, the gradualism of progress is no match for a scare story on the nightly news. There is real money at stake here, but the media is driven not only by economic incentives. In fact, the dominant leftist ideology in media organizations means that they are more than happy to spread alarm as part of a crusade for state solutions to presumed risks. There are even well-meaning users of social media who jump at the chance to signal their virtue by reposting memes and reports that are couched not merely in terms of risks, but as dire future realities.
Mitigating social risks is a legitimate function of government. Unfortunately, identifying and exaggerating risks, and suppressing contradictory evidence, is in the personal interest of politicians, bureaucrats, crony capitalists, and many members of the media. Everything seems to demand government intervention. Carbon concentration, global warming and sea level changes are glaring examples of exaggerated risks. As Ridley says,
“The supreme case of unfalsifiable pessimism is climate change. It has the advantage of decades of doom until the jury returns. People who think the science suggests it will not be as bad as all that, or that humanity is likely to mitigate or adapt to it in time, get less airtime and a lot more criticism than people who go beyond the science to exaggerate the potential risks. That lukewarmers have been proved right so far cuts no ice.”
In many cases, the real crises have more to do with government activism than the original issue with which they were meant to reckon. Which brings me to a discomfiting vision of my own: having allowed the administrative state to metastasize across almost every social organ and every aspect of our lives, a huge risk to our future well-being is continuing erosion of personal and economic liberties and our ability to prosper as a society. Here’s Ridley’s close:
“Activists sometimes justify the focus on the worst-case scenario as a means of raising consciousness. But while the public may be susceptible to bad news they are not stupid, and boys who cry ‘wolf!’ are eventually ignored. As the journalist John Horgan recently argued in Scientific American: ‘These days, despair is a bigger problem than optimism.'”
It’s a great irony that our educated and affluent classes have been largely zombified on the subject of climate change. Their brainwashing by the mainstream media has been so effective that these individuals are unwilling to consider more nuanced discussions of the consequences of higher atmospheric carbon concentrations, or any scientific evidence to suggest contrary views. I recently attended a party at which I witnessed several exchanges on the topic. It was apparent that these individuals are conditioned to accept a set of premises while lacking real familiarity with supporting evidence. Except in one brief instance, I avoided engaging on the topic, despite my bemusement. After all, I was there to party, and I did!
The zombie alarmists express their views within a self-reinforcing echo chamber, reacting to each others’ virtue signals with knowing sarcasm. They also seem eager to avoid any “denialist” stigma associated with a contrary view, so there is a sinister undercurrent to the whole dynamic. These individuals are incapable of citing real sources and evidence; they cite anecdotes or general “news-say” at best. They confuse local weather with climate change. Most of them haven’t the faintest idea how to find real research support for their position, even with powerful search engines at their disposal. Of course, the search engines themselves are programmed to prioritize the very media outlets that profit from climate scare-mongering. Catastrophe sells! Those media outlets, in turn, are eager to quote the views of researchers in government who profit from alarmism in the form of expanding programs and regulatory authority, as well as researchers outside of government who profit from government grant-making authority.
The Con in the “Consensus”
Climate alarmists take assurance in their position by repeating the false claim that 97% of climate scientists believe that human activity is the primary cause of warming global temperatures. The basis for this strong assertion comes from an academic paper that reviewed other papers, the selection of which was subject to bias. The 97% figure was not a share of “scientists”. It was the share of the selected papers stating agreement with the anthropomorphic global warming (AGW) hypothesis. And that figure is subject to other doubts, in addition to the selection bias noted above: the categorization into agree/disagree groups was made by “researchers” who were, in fact, environmental activists, who counted several papers written by so-called “skeptics” among the set that agreed with the strong AGW hypothesis. So the “97% of scientists” claim is a distortion of the actual findings, and the findings themselves are subject to severe methodological shortcomings. On the other hand, there are a number of widely-recognized, natural reasons for climate change, as documented in this note on 240 papers published over just the first six months of 2016.
Data Integrity
It’s rare to meet a climate alarmist with any knowledge of how temperature data is actually collected. What exactly is the “global temperature”, and how can it be measured? It is a difficult undertaking, and it wasn’t until 1979 that it could be done with any reliability. According to Roy Spencer, that’s when satellite equipment began measuring:
“… the natural microwave thermal emissions from oxygen in the atmosphere. The intensity of the signals these microwave radiometers measure at different microwave frequencies is directly proportional to the temperature of different, deep layers of the atmosphere.“
Prior to the deployment of weather satellites, and starting around 1850, temperature records came only from surface temperature readings. These are taken at weather stations on land and collected at sea, and they are subject to quality issues that are generally unappreciated. Weather stations are unevenly distributed and they come and go over time; many of them produce readings that are increasingly biased upward by urbanization. Sea surface temperatures are collected in different ways with varying implications for temperature trends. Aggregating these records over time and geography is a hazardous undertaking, and these records are, unfortunately, the most vulnerable to manipulation.
The urbanization bias in surface temperatures is significant. According to this paper by Ross McKitrick, the number of weather stations counted in the three major global temperature series declined by more than 4,500 since the 1970s (over 75%), and most of those losses were rural stations. From McKitrick’s abstract:
“The collapse of the sample size has increased the relative fraction of data coming from airports to about 50% (up from about 30% in the late 1970s). It has also reduced the average latitude of source data and removed relatively more high altitude monitoring sites. Oceanic data are based on sea surface temperature (SST) instead of marine air temperature (MAT)…. Ship-based readings changed over the 20th century from bucket-and-thermometer to engine-intake methods, leading to a warm bias as the new readings displaced the old.“
Think about that the next time you hear about temperature records, especially NOAA reports on a “new warmest month on record”.
Data Manipulation
It’s rare to find alarmists having any awareness of the scandal at East Anglia University, which involved data falsification by prominent members of the climate change “establishment”. That scandal also shed light on corruption of the peer-review process in climate research, including a bias against publishing work skeptical of the accepted AGW narrative. Few are aware now of a very recent scandal involving manipulation of temperature data at NOAAin which retroactive adjustments were applied in an effort to make the past look cooler and more recent temperatures warmer. There is currently an FOIA outstanding for communications between the Obama White House and a key scientist involved in the scandal. Here are Judith Curry’s thoughts on the NOAA temperature manipulation.
Think about all that the next time you hear about temperature records, especially NOAA reports on a “new warmest month on record”.
Other Warming Whoppers
Last week on social media, I noticed a woman emoting about the way hurricanes used to frighten her late mother. This woman was sharing an article about the presumed negative psychological effects that climate change was having on the general public. The bogus premises: we are experiencing an increase in the frequency and severity of storms, that climate change is causing the storms, and that people are scared to death about it! Just to be clear, I don’t think I’ve heard much in the way of real panic, and real estate prices and investment flows don’t seem to be under any real pressure. In fact, the frequency and severity of severe weather has been in decline even as atmospheric carbon concentrations have increased over the past 50 years.
I heard another laughable claim at the party: that maps are showing great areas of the globe becoming increasingly dry, mostly at low latitudes. I believe the phrase “frying” was used. That is patently false, but I believe it’s another case in which climate alarmists have confused model forecasts with fact.
The prospect of rising sea levels is another matter that concerns alarmists, who always fail to note that sea levels have been increasing for a very long time, well before carbon concentrations could have had any impact. In fact, the sea level increases in the past few centuries are a rebound from lows during the Little Ice Age, and levels are now back to where the seas were during the Medieval Warm Period. But even those fluctuations look minor by comparison to the increases in sea levels that occurred over 8,000 years ago. Sea levels are rising at a very slow rate today, so slowly that coastal construction is proceeding as if there is little if any threat to new investments. While some of this activity may be subsidized by governments through cheap flood insurance, real money is on the line, and that probably represents a better forecast of future coastal flooding than any academic study can provide.
Old Ideas Die Hard
Two enduring features of the climate debate are 1) the extent to which so-called “carbon forcing” models of climate change have erred in over-predicting global temperatures, and 2) the extent to which those errors have gone unnoticed by the media and the public. The models have been plagued by a number of issues: the climate is not a simple system. However, one basic shortcoming has to do with the existence of strong feedback effects: the alarmist community has asserted that feedbacks are positive, on balance, magnifying the warming impact of a given carbon forcing. In fact, the opposite seems to be true: second-order responses due to cloud cover, water vapor, and circulation effects are negative, on balance, at least partially offsetting the initial forcing.
Fifty Years Ain’t History
One other amazing thing about the alarmist position is an insistence that the past 50 years should be taken as a permanent trend. On a global scale, our surface temperature records are sketchy enough today, but recorded history is limited to the very recent past. There are recognized methods for estimating temperatures in the more distant past by using various temperature proxies. These are based on measurements of other natural phenomenon that are temperature-sensitive, such as ice cores, tree rings, and matter within successive sediment layers such as pollen and other organic compounds.
The proxy data has been used to create temperature estimates into the distant past. A basic finding is that the world has been this warm before, and even warmer, as recently as 1,000 years ago. This demonstrates the wide range of natural variation in the climate, and today’s global temperatures are well within that range. At the party I mentioned earlier, I was amused to hear a friend say, “Ya’ know, Greenland isn’t supposed to be green”, and he meant it! He is apparently unaware that Greenland was given that name by Viking settlers around 1000 AD, who inhabited the island during a warm spell lasting several hundred years… until it got too cold!
Carbon Is Not Poison
The alarmists take the position that carbon emissions are unequivocally bad for people and the planet. They treat carbon as if it is the equivalent of poisonous air pollution. The popular press often illustrates carbon emissions as black smoke pouring from industrial smokestacks, but like oxygen, carbon dioxide is a colorless gas and a gas upon which life itself depends.
Our planet’s vegetation thrives on carbon dioxide, and increasing carbon concentrations are promoting a “greening” of the earth. Crop yields are increasing as a result; reforestation is proceeding as well. The enhanced vegetation provides an element of climate feedback against carbon “forcings” by serving as a carbon sink, absorbing increasing amounts of carbon and converting it to oxygen.
Matt Ridley has notedone of the worst consequences of the alarmists’ carbon panic and its influence on public policy: the vast misallocation of resources toward carbon reduction, much of it dedicated to subsidies for technologies that cannot pass economic muster. Consider that those resources could be devoted to many other worthwhile purposes, like bringing electric power to third-world families who otherwise must burn dung inside their huts for heat; for that matter, perhaps the resources could be left under the control of taxpayers who can put it to the uses they value most highly. The regulatory burdens imposed by these policies on carbon-intensive industries represent lost output that can’t ever be recouped, and all in the service of goals that are of questionable value. And of course, the anti-carbon efforts almost certainly reflect a diversion of resources to the detriment of more immediate environmental concerns, such as mitigating truly toxic industrial pollutants.
The priorities underlying the alarm over climate change are severely misguided. The public should demand better evidence than consistently erroneous model predictions and manipulated climate data. Unfortunately, a media eager for drama and statism is complicit in the misleading narrative.
FYI: The cartoon at the top of this post refers to the climate blog climateaudit.org. The site’s blogger Steve McIntyre did much to debunk the “hockey stick” depiction of global temperature history, though it seems to live on in the minds of climate alarmists. McIntyre appears to be on an extended hiatus from the blog.
In advanced civilizations the period loosely called Alexandrian is usually associated with flexible morals, perfunctory religion, populist standards and cosmopolitan tastes, feminism, exotic cults, and the rapid turnover of high and low fads---in short, a falling away (which is all that decadence means) from the strictness of traditional rules, embodied in character and inforced from within. -- Jacques Barzun
Sacred Cow Chips 