Showing posts with label CO2. Show all posts
Showing posts with label CO2. Show all posts

Friday, January 17, 2020

Climate Change: A Concise Assessment of What we are Risking.




The text below is a translation of a post that I published in the Italian newspaper "Il Fatto Quotidiano" about two months ago. The idea was to provide a concise statement on the climate situation (no more than 650 words allowed).  I tried to emphasize the risks involved with the "climate tipping points" and criticize the common idea that, since "the Earth's climate has always been changing,"  there follows that "human activities can't affect climate". I can't really say what impact this article may have had -- normally my posts on "Il Fatto" score a few thousand clicks. But, if you have the time to read the comments (78 in total), you may notice that many commenters were not even vaguely touched by my arguments and continued repeating their typical statements, "where is the proof?" "These are just models," "Nobody knows exactly what's the climate sensitivity factor," "The Club of Rome made wrong predictions," etc.  And so it goes....




The failure of the Madrid climate negotiations, the Cop25, was not really unexpected. Even today, very few people, be they politicians or citizens, understand the risks of what's happening, and those who do are accused of "alarmism". But how long can we carry on as if nothing is happening? What do we risk if we do nothing?

The answer is that we risk much more than we can afford. Many studies tell us
this, among others also a recent article published in Nature titled "Climate tipping points — too risky to bet against." Even without going into the details, the title is clear enough to understand that the matter is becoming dramatic. But why so much concern among scientists?

We can summarize the problem in one short sentence: the Earth's climate is unstable. It is something that is emerging with ever greater force from all studies in climate science. Of course, the fact that the climate always changes is a favorite argument of those who deny climate science. Their reasoning is: "the climate has always changed, therefore man has nothing to do with it." Wrong, very wrong: what we learn from past climate changes is instead that the Earth's climate changes easily and, therefore, is not so difficult to change it. And that's where the risk is.

Today the climate seems stable to us because human civilization has developed over a period of about 10,000 years of modest changes in temperature. Some people enjoy speculating about these small variations, for instance discussing how Hannibal's elephants could cross the Alps. Maybe, at the time, it was a bit warmer than today, but they must have had quite some problems with freezing trunks.

But, if we go further back in time, we see that the Earth's climate has seen real, strong, and dramatic changes. In the past, over a span of about a million years, our planet has seen episodes of intense glaciation interspersed with relatively warm periods, such as the one we live in today. In the more distant past, the Earth saw much more radical and catastrophic changes.

To push the Earth from a glacial period to an interglacial one does not take much: small perturbations are enough, the so-called "Milankovitch cycles", related to asymmetries of the movement of the earth around the sun. But what humans are causing with their greenhouse gas emissions and other factors is a much stronger perturbation that drives us to a warmer, much warmer, planet.

What could happen then? There is talk of temperatures
high enough to destabilize the ice caps at the poles and make them disappear. It would not be the first time that the Earth has no ice at the poles, on the contrary, it is a condition that has occurred commonly in the distant past. But, if the biosphere can live even without ice, our civilization has developed with icecaps at the poles, in climatic conditions that have made possible agriculture, trade, maritime transport, and more.

To create enormous damage to us, we don't even need that the icecaps disappear completely. It is enough to lose an important fraction of the ice to change everything: the sea level would rise to submerge existing ports, then we would see acidification and oceanic anoxia, desertification, mass extinctions and a few more effects that would imperil the survival of human civilization difficult, if not actually of our species.

This is the reason for the great concern: it is not so much the fact that the temperature increases, it is that we face the risk of jumping sharply from one climatic state to another without knowing where we will end up. However, we continue to discuss without taking action: few realize that we risk much more than we can afford.



Saturday, September 14, 2019

A New Paradigm for the Earth's Ecosystem: Anastassia Makarieva Speaks about the Biotic Pump in Florence




https://www.bioticregulation.ru/

 

Everything began with the idea of Charles Darwin of "evolution by natural selection." It was a dangerous idea according to Daniel Dennett, but there was nothing dangerous in it unless you misunderstood it. And we know how it was misunderstood by the various suprematists, racists, white-supremacists, white-man-burdenists, and the like. But Darwin's idea was simple: the biosphere is not static but adapts to changes in the ecosystem. That's all. There is no species in the biosphere that is superior to other species, there is no collective movement towards some kind of "progress" - nothing of the kind. Everything changes to keep the biosphere alive.

Among other things, Darwin's idea (dangerous or not) was the first attempt to understand the functioning of complex systems - among which one of the most complex is the planetary ecosystem. Curiously, the human brain, itself a complex system, often finds it difficult to understand complex systems, there must be some profound reason for this, but let's skip the subject. Rather, the concepts proposed by Darwin have also evolved - or adapted - in time. We are beginning to understand that it is not enough to say that the biosphere adapts to changes, is too simple. This is not how complex systems work. They work through the mechanisms we call feedback where each element of the system influences others.

The step forward came from James Lovelock and Lynn Margulis with their concept of Gaia, a name that describes the fact that the biosphere adapts to changes in the ecosystem and at the same time generates changes in the ecosystem. The adaptation is mutual and two-way. Feedback, in essence.

The concept of Gaia is even more dangerous than that of Darwinian evolution: you can use it as an easy excuse to say that it doesn't matter what we do to the ecosystem, Mother Gaia will take care of everything. Yeah, sure...  But the main problem seems to be that in the current debate opinion leaders are unable to understand the concept of self-regulation of the ecosystem. The debate is broken up into inconsistent and partially (or totally) incompatible ideas. A good example is what is being done in Tuscany, in Italy, where the regional government is declaring the climate emergency while at the same time promoting the construction of a new international airport in Florence. We just can't make it.

But these ideas of ecosystemic regulation are very powerful. If we ever succeed in making them part of the current culture, they offer us the possibility of maneuvering human action within the biosphere and the ecosphere at least limiting the damage, if possible in mutual harmony. At the moment it seems totally impossible, but everything changes and those who don't adapt disappear - as Darwin taught us.


We come now to the work of Gorshkov, Makarieva, and others, who over a couple of decades have developed the concept they call "biotic regulation."  It is a concept similar to that proposed earlier on by Lovelock and Margulis, although Makarieva and Gorshkov are keen to point out that it is not the same thing. Sometimes (but erroneously) Gaia is understood as a "superorganism," a form of biological life. Gaia is not that, but let's skip this topic.

The concept of biotic regulation is a profound synthesis of how the ecosphere works: it emphasizes its regulating power that keeps the ecosystem from straying away from the conditions that make it possible for biological life to exist. From this work comes the idea that the ecosystemic imbalance we call "climate change" is caused only in part by CO2 emissions. Another important factor is the ongoing deforestation.

This is, of course, a controversial position - not to say heretical. Just last week, I read a comment from an Italian climatologist who explicitly said: "The climate crisis is NOT caused by the lack of trees." This would seem to be the prevailing opinion among climatologists in the West, although studies exist (see for example this article in Science of 2016) that show exactly the opposite. The forests cool the Earth not only by sequestering carbon in the form of biomass but because of a biophysical effect related to evapotranspiration. That is, the water evaporates at low altitude from the leaves, causing cooling. It returns the heat when it condenses in the form of clouds, but the heat emissions at high altitudes are more easily dispersed towards space because the main greenhouse gas, the water, exists in very small concentrations. 


Included in the concept of biotic regulation we find the concept of "biotic pump," developed by Gorshkov and Makarieva in 2012, stating that the forests act as "planetary pumping systems" carrying water from the atmosphere above the oceans up to thousands of kilometers inland. The biotic pump mechanism is controversial but, evidently, there must be something that brings water so far into the continents.

Now, everything depends on quantitative factors that are still little known. But, if it is true that the climate is linked in an important way to the forests, and consequently to the biotic pump, then by doing what we are doing to the forests (think of the Amazons), we are destroying one of the fundamental mechanisms of self-regulation of the terrestrial ecosystem. In other words, to fight climate change it is not enough to cut CO2 emissions from fossil fuels, but it is also necessary to reconstitute the forests in an intact form.

The situation is seen as worrisome by a group of Russian researchers who recently produced a document in which they recommend
the care of natural ecosystems and stopping deforestation as the main way to combat climate change. In the document, they refer to fossil fuels with a statement that seems to echo the recent piece by Franzen in the New Yorker, "what if we stopped pretending?" That is, they say, "there are objective technological reasons prohibiting the scenario when our civilization would give up using fossil fuels." Then, they go on, saying,
In such a situation, a complex approach to climate problems is necessary - the one not confined to attempts of curbing the anthropogenic carbon dioxide emissions like a transition to renewable energy sources, removal of the already accumulated carbon dioxide from the atmosphere by technological means etc. The complex approach must include restoration and protection of natural systems as a major measure, since their degradation can lead to a climatic collapse irrespective of whether fossil fuel burning continues or not. Any considerable strategic solutions will demand huge resources from the humanity. So such solutions should be mutually consistent otherwise the climate situation will just aggravate (for example, increasing the biofuel production can lead to an intensification of deforestation).
Of course, right now, anything coming from Russia is considered propaganda, if not directly contaminated with Novichok. So, the first knee-jerk reaction to this document is likely to be ideological: of course, we have been told that Russia is little more than a service station disguised as a state, so this document can't be anything but a trick to maintain the profits of the Russian oil oligarchs and their great leader, the arch-villain Vladimir Putin.

But are we sure? That is, can we deny that climate change is not just a problem of CO2 but also of other factors related to the mistreatments we are inflicting on the ecosystem? Can we keep the fiction that all we need to do to stop global warming is a carbon tax or some similar trick? Don't we need to rethink our strategies and admit that, if our approach hasn't worked so far, it will never work? Can we learn something important from Russia? And, if this is the case, does restoring the forests give us a way to at least contain the major damage we are creating by using fossil fuels?


Whatever the case, there is a clear perception gap in the way the situation is seen in the West and in Russia. And we have to understand each other if we are to do something to try to stop the upcoming disaster. We talk about this subject with Anastassia Makarieva in Florence on September 17th. 



Monday, February 26, 2018

Where is the proof that CO2 warms the Earth?



A persistent element of the climate debate is the claim that "there is no proof" that CO2 and other greenhouse gases warm the atmosphere. This has generated a number of amateurish demonstrations of how the greenhouse effect works  A good example of how NOT to carry out such a demonstration is shown above. Nobody told this poor kid how to perform a scientific measurement. If he had switched his jars he would have discovered that the effects he observes are only the result of one of the two jars being closer than the other to the light source. And they didn't even explain to him how the greenhouse effect actually works: you cannot see any warming in this set-up unless you place a light adsorber (e.g. a piece of black cloth) in the jar discuss this and other disasters in a post of mine (in Italian), see also here.


Imagine that someone asks you to prove that the Moon orbits around the Earth because it is pulled by the force of gravity. Your first reaction would be to say something like "huh?" But - assuming you are in a good mood - you might try to explain how Newton's law of universal gravitation works and how it can be used to describe the moon's trajectory.

"So," your opponent could say, "is it correct to say that nobody ever measured the gravity pull of the Earth at the Earth-Moon distance?"

"Aw... No. What for? It would be terribly expensive. And useless, too."

"Then, you have no proof that the Moon goes around the Earth because of gravity. So, can you prove that the Moon is not being pushed by invisible angels, instead?"

That would end the civil conversation, but there is some logic in this kind of questions. You can't reproduce the Moon's motion in a lab, here on the Earth. Instead, to prove that Newton's law is valid you create a model based on the law and then use it to describe the movement of moons, planets, and stars. The model works, hence the law behind it is correct. No need of measuring the Earth's gravity pull at the Earth-Moon distance (and no need of invisible angels pushing).

Now, let's translate all this to a question often asked in the climate debate. What proof do we have that greenhouse gases, and CO2 in particular, warm the Earth's atmosphere? As a question, it is similar to the one about the Moon orbiting the Earth, in the sense that we can't reproduce the properties of a whole planetary atmosphere in the lab.

To answer the question, we can start from laboratory experiments showing that CO2 absorbs infrared radiation - they were done already by Tyndall in the 19th century. We don't need amateurs today to remake those experiments, doing the job poorly. Then, we create models that describe the Earth's atmosphere and we use them to fine-tune the parameters of the warming effect. The models follow reasonably well the warming trends of the past so that we confirm that CO2 warms the Earth.

In addition, we even have direct experiments showing that, as the atmosphere warms, more infrared radiation is radiated to space, while at the same time less infrared radiation escapes at the wavelengths where CO2 absorbs radiation. It is what we expect a greenhouse gas should do.

Case closed, then? Not really. The Moon-Earth system is relatively simple and, unless you really want to believe in invisible angels, there is no doubt that the Moon is kept in its orbit by gravity, and by gravity only. Instead, the Earth's ecosystem system is a tangle of subsystems interacting with each other in ways that - in many cases - we have troubles in quantifying exactly. Newton could never have described the Earth's atmosphere by means of a single universal equation. So, how to disentangle the various contributions to the Earth's temperature: albedo, atmospheric particulate, vegetation cover, and more?

This is the task of models, coupled with various kinds of measurements. For what we can say nowadays, the rising CO2 concentration is the main factor in the observed warming, but that's subjected to changes and refinements as we have new data. Among other examples, a very recent paper appeared in Nature quantified the effects of the vegetation cover. This is mainly a local effect and changes little to the overall picture, but it shows how dangerous it can be to say that "the science is settled." Of course, that doesn't mean jumping to the conclusion that angels are warming the Earth with their breath. And it doesn't mean to engage in silly games of data torturing. It just means recognizing the complexity of the problem.

Then, there is an even deeper problem: complex systems such as the Earth's ecosystem are just that: complex. They may react to perturbations in a strongly non-linear way, amplifying or dampening the perturbation. In a complex system, it is always difficult to say what causes what. You can say that in a complex system there are no causes and no effects, only forcings and feedbacks. So, when people say that the increase in CO2 concentration is not a cause but an effect of global warming, are they wrong? Yes, they are basically wrong, but it is also true that increasing concentrations of greenhouse gases may be both a cause and an effect of global warming. Complex systems are dominated by feedbacks. And that means they can amplify the effect of a small forcing, turning it into a disaster. This is, by the way, the origin of the "Seneca Effect"

In the end, it all means that we have to recognize that the Earth's climate could react to perturbations in ways we can't even imagine. And more than seven billion humans on the planet have been a huge perturbation, no matter how we want to see the relative importance of what we have been doing. We ignore that at our risk.






Tuesday, August 29, 2017

Richard Heinberg: the problem is that we don't know what's the problem


The Italian National Railroad ("Trenitalia") prints on every ticket it issues an estimate of the amount of CO2 emissions avoided by purchasing it. I am not so sure that Trenitalia's heavy, high-speed trains are such great energy savers. Maybe, but in any case, fairness would dictate that the ticket should include something like, "but, you asshole, if you had stayed home, you would have avoided a lot more CO2 emissions!"

This is just an example of how the whole "ecological movement" seems to have settled to becoming little more than accountants in CO2 saving. Apparently, knowing that you saved "2.5 kg of CO2" (assuming that it is true) should make you feel that you are doing something to fight climate change. But, if you think about that, it is just a little prayer to the climate Gods so that they would spare us from their wrath. The problem cannot be solved by these little tricks; climate change is just a symptom of a much deeper problem: it is the wholesale destruction of the planetary ecosystem, in turn caused by resource overexploitation (aka, overshoot). We won't ever be able to cure this planetary sickness by looking only at the symptoms.

In this excellent, thought-provoking essay, Richard Heinberg frames the problem the way it should be framed. It is rather long but absolutely worth reading. And if you don't have enough time to read it all, just read the first block of the text and it is a perfect synthesis of the predicament we are in.


Climate Change Isn’t Our Biggest Environmental Problem, and Why Technology Won’t Save Us


By Richard Heinberg (reposted with kind permission from the author)


Our core ecological problem is not climate change. It is overshoot, of which global warming is a symptom. Overshoot is a systemic issue. Over the past century-and-a-half, enormous amounts of cheap energy from fossil fuels enabled the rapid growth of resource extraction, manufacturing, and consumption; and these in turn led to population increase, pollution, and loss of natural habitat and hence biodiversity. The human system expanded dramatically, overshooting Earth’s long-term carrying capacity for humans while upsetting the ecological systems we depend on for our survival. Until we understand and address this systemic imbalance, symptomatic treatment (doing what we can to reverse pollution dilemmas like climate change, trying to save threatened species, and hoping to feed a burgeoning population with genetically modified crops) will constitute an endlessly frustrating round of stopgap measures that are ultimately destined to fail.

The ecology movement in the 1970s benefitted from a strong infusion of systems thinking, which was in vogue at the time (ecology—the study of the relationships between organisms and their environments—is an inherently systemic discipline, as opposed to studies like chemistry that focus on reducing complex phenomena to their components). As a result, many of the best environmental writers of the era framed the modern human predicament in terms that revealed the deep linkages between environmental symptoms and the way human society operates. Limits to Growth (1972), an outgrowth of the systems research of Jay Forrester, investigated the interactions between population growth, industrial production, food production, resource depletion, and pollution. Overshoot(1982), by William Catton, named our systemic problem and described its origins and development in a style any literate person could appreciate. Many more excellent books from the era could be cited.

However, in recent decades, as climate change has come to dominate environmental concerns, there has been a significant shift in the discussion. Today, most environmental reporting is focused laser-like on climate change, and systemic links between it and other worsening ecological dilemmas (such as overpopulation, species extinctions, water and air pollution, and loss of topsoil and fresh water) are seldom highlighted. It’s not that climate change isn’t a big deal. As a symptom, it’s a real doozy. There’s never been anything quite like it, and climate scientists and climate-response advocacy groups are right to ring the loudest of alarm bells. But our failure to see climate change in context may be our undoing.

Why have environmental writers and advocacy organizations succumbed to tunnel vision? Perhaps it’s simply that they assume systems thinking is beyond the capacity of policy makers. It’s true: if climate scientists were to approach world leaders with the message, “We have to change everything, including our entire economic system—and fast,” they might be shown the door rather rudely. A more acceptable message is, “We have identified a serious pollution problem, for which there are technical solutions.” Perhaps many of the scientists who did recognize the systemic nature of our ecological crisis concluded that if we can successfully address this one make-or-break environmental crisis, we’ll be able to buy time to deal with others waiting in the wings (overpopulation, species extinctions, resource depletion, and on and on).

If climate change can be framed as an isolated problem for which there is a technological solution, the minds of economists and policy makers can continue to graze in familiar pastures. Technology—in this case, solar, wind, and nuclear power generators, as well as batteries, electric cars, heat pumps, and, if all else fails, solar radiation management via atmospheric aerosols—centers our thinking on subjects like financial investment and industrial production. Discussion participants don’t have to develop the ability to think systemically, nor do they need to understand the Earth system and how human systems fit into it. All they need trouble themselves with is the prospect of shifting some investments, setting tasks for engineers, and managing the resulting industrial-economic transformation so as to ensure that new jobs in green industries compensate for jobs lost in coal mines.

The strategy of buying time with a techno-fix presumes either that we will be able to institute systemic change at some unspecified point in the future even though we can’t do it just now (a weak argument on its face), or that climate change and all of our other symptomatic crises will in fact be amenable to technological fixes. The latter thought-path is again a comfortable one for managers and investors. After all, everybody loves technology. It already does nearly everything for us. During the last century it solved a host of problems: it cured diseases, expanded food production, sped up transportation, and provided us with information and entertainment in quantities and varieties no one could previously have imagined. Why shouldn’t it be able to solve climate change and all the rest of our problems?

Of course, ignoring the systemic nature of our dilemma just means that as soon as we get one symptom corralled, another is likely to break loose. But, crucially, is climate change, taken as an isolated problem, fully treatable with technology? Color me doubtful. I say this having spent many months poring over the relevant data with David Fridley of the energy analysis program at Lawrence Berkeley National Laboratory. Our resulting book, Our Renewable Future, concluded that nuclear power is too expensive and risky; meanwhile, solar and wind power both suffer from intermittency, which (once these sources begin to provide a large percentage of total electrical power) will require a combination of three strategies on a grand scale: energy storage, redundant production capacity, and demand adaptation. At the same time, we in industrial nations will have to adapt most of our current energy usage (which occurs in industrial processes, building heating, and transportation) to electricity. Altogether, the energy transition promises to be an enormous undertaking, unprecedented in its requirements for investment and substitution. When David and I stepped back to assess the enormity of the task, we could see no way to maintain current quantities of global energy production during the transition, much less to increase energy supplies so as to power ongoing economic growth. The biggest transitional hurdle is scale: the world uses an enormous amount of energy currently; only if that quantity can be reduced significantly, especially in industrial nations, could we imagine a credible pathway toward a post-carbon future.

Downsizing the world’s energy supplies would, effectively, also downsize industrial processes of resource extraction, manufacturing, transportation, and waste management. That’s a systemic intervention, of exactly the kind called for by the ecologists of the 1970s who coined the mantra, “Reduce, reuse, and recycle.” It gets to the heart of the overshoot dilemma—as does population stabilization and reduction, another necessary strategy. But it’s also a notion to which technocrats, industrialists, and investors are virulently allergic.

The ecological argument is, at its core, a moral one—as I explain in more detail in a just-released manifesto replete with sidebars and graphics (“There’s No App for That: Technology and Morality in the Age of Climate Change, Overpopulation, and Biodiversity Loss”). Any systems thinker who understands overshoot and prescribes powerdown as a treatment is effectively engaging in an intervention with an addictive behavior. Society is addicted to growth, and that’s having terrible consequences for the planet and, increasingly, for us as well. We have to change our collective and individual behavior and give up something we depend on—power over our environment. We must restrain ourselves, like an alcoholic foreswearing booze. That requires honesty and soul-searching.

In its early years the environmental movement made that moral argument, and it worked up to a point. Concern over rapid population growth led to family planning efforts around the world. Concern over biodiversity declines led to habitat protection. Concern over air and water pollution led to a slew of regulations. These efforts weren’t sufficient, but they showed that framing our systemic problem in moral terms could get at least some traction.

Why didn’t the environmental movement fully succeed? Some theorists now calling themselves “bright greens” or “eco-modernists” have abandoned the moral fight altogether. Their justification for doing so is that people want a vision of the future that’s cheery and that doesn’t require sacrifice. Now, they say, only a technological fix offers any hope. The essential point of this essay (and my manifesto) is simply that, even if the moral argument fails, a techno-fix won’t work either. A gargantuan investment in technology (whether next-generation nuclear power or solar radiation geo-engineering) is being billed as our last hope. But in reality it’s no hope at all.

The reason for the failure thus far of the environmental movement wasn’t that it appealed to humanity’s moral sentiments—that was in fact the movement’s great strength. The effort fell short because it wasn’t able to alter industrial society’s central organizing principle, which is also its fatal flaw: its dogged pursuit of growth at all cost. Now we’re at the point where we must finally either succeed in overcoming growthism or face the failure not just of the environmental movement, but of civilization itself.

The good news is that systemic change is fractal in nature: it implies, indeed it requires, action at every level of society. We can start with our own individual choices and behavior; we can work within our communities. We needn’t wait for a cathartic global or national sea change. And even if our efforts cannot “save” consumerist industrial civilization, they could still succeed in planting the seeds of a regenerative human culture worthy of survival.

There’s more good news: once we humans choose to restrain our numbers and our rates of consumption, technology can assist our efforts. Machines can help us monitor our progress, and there are relatively simple technologies that can help deliver needed services with less energy usage and environmental damage. Some ways of deploying technology could even help us clean up the atmosphere and restore ecosystems.

But machines won’t make the key choices that will set us on a sustainable path. Systemic change driven by moral awakening: it’s not just our last hope; it’s the only real hope we’ve ever had.


Are We Doomed? Let’s Have a Conversation.

My most recent essay, in which I discussed a highly publicized controversy over the efficacy of plans for a comprehensive transition to an all-renewable energy future, garnered some strong responses. “If you are right,” one Facebook commenter opined, “we are doomed. Fortunately you are not right.” (The commenter didn’t explain why.) What had I said to provoke an expectation of cataclysmic oblivion? Simply that there is probably no technically and financially feasible energy pathway to enable those of us in highly industrialized countries to maintain current levels of energy usage very far into the future.

My piece happened to be published right around the same time New York Magazine released a controversial article titled “The Uninhabitable Earth,” in which author David Wallace Wells portrayed a dire future if the most pessimistic climate change models turn to reality. “It is, I promise, worse than you think,” wrote Wells. “If your anxiety about global warming is dominated by fears of sea-level rise, you are barely scratching the surface of what terrors are possible, even within the lifetime of a teenager today.” Wells’s article drew rebukes from—of all people—climate scientists, who pointed out a few factual errors, but also insisted that scaring the public just doesn’t help. “Importantly, fear does not motivate,” responded Michael Mann with Susan Joy Hassol and Tom Toles, “and appealing to it is often counter-productive as it tends to distance people from the problem, leading them to disengage, doubt and even dismiss it.”

It’s true: apocalyptic warnings don’t move most people. Or, rather, they move most people away from the source of discomfort, so they simply tune out. But it’s also true that people feel a sense of deep, unacknowledged unease when they are fed “solutions” that they instinctively know are false or insufficient.

Others came to Wells’s defense. Margaret Klein Salamon, a clinical psychologist and founder of the climate action group The Climate Mobilization, which advocates for starting a “World War II-scale” emergency mobilization to convert from fossil fuels, writes, “it is OK, indeed imperative, to tell the whole, frightening story. . . . [I]t’s the job of those of us trying to protect humanity and restore a safe climate to tell the truth about the climate crisis and help people process and channel their own feelings—not to preemptively try to manage and constrain those feelings.”

So: Are we doomed if we can’t maintain current and growing energy levels? And are we doomed anyway due to now-inevitable impacts of climate change?

First, the good news. With regard to energy, we should keep in mind the fact that today’s Americans use roughly twice as much per capita as their great-grandparents did in 1925. While people in that era enjoyed less mobility and fewer options for entertainment and communication than we do today, they nevertheless managed to survive and even thrive. And we now have the ability to provide many services (such as lighting) far more efficiently, so it should be possible to reduce per-capita energy usage dramatically while still maintaining a lifestyle that would be considered more than satisfactory by members of previous generations and by people in many parts of the world today. And reducing energy usage would make a whole raft of problems—climate change, resource depletion, the challenge of transitioning to renewable energy sources—much easier to solve.

The main good news with regard to climate change that I can point to (as I did in an essay posted in June) is that economically recoverable fossil fuel reserves are consistent only with lower-emissions climate change scenarios. As BP and other credible sources for coal, oil, and natural gas reserves figures show, and as more and more researchers are pointing out, the worst-case climate scenarios associated with “business as usual” levels of carbon emissions are in fact unrealistic.

Now, the bad news. While we could live perfectly well with less energy, that’s not what the managers of our economy want. They want growth. Our entire economy is structured to require constant, compounded growth of GDP, and for all practical purposes raising the GDP means using more energy. While fringe economists and environmentalists have for years been proposing ways to back away from our growth addiction (for example, by using alternative economic indices such as Gross National Happiness), none of these proposals has been put into widespread effect. As things now stand, if growth falters the economy crashes.

There’s bad climate news as well: even with current levels of atmospheric greenhouse gases, we’re seeing unacceptable and worsening impacts—raging fires, soaring heat levels, and melting icecaps. And there are hints that self-reinforcing feedbacks maybe kicking in: an example is the release of large amounts of methane from thawing tundra and oceanic hydrates, which could lead to a short-term but steep spike in warming. Also, no one is sure if current metrics of climate sensitivity (used to estimate the response of the global climate system to a given level of forcing) are accurate, or whether the climate is actually more sensitive than we have assumed. There’s some worrisome evidence the latter is case.

But let’s step back a bit. If we’re interested in signs of impending global crisis, there’s no need to stop with just these two global challenges. The world is losing 25 billion tons of topsoil a year due to current industrial agricultural practices; if we don’t deal with that issue, civilization will still crash even if we do manage to ace our energy and climate test. Humanity is also over-using fresh water: ancient aquifers are depleting, while other water sources are being polluted. If we don’t deal with our water crisis, we still crash. Species are going extinct at a thousand times the pre-industrial rate; if we don’t deal with the biodiversity dilemma, we still crash. Then there are social and economic problems that could cause nations to crumble even if we manage to protect the environment; this threat category includes the menaces of over-reliance on debt and increasing economic inequality.

If we attack each of these problems piecemeal with technological fixes (for example, with desalination technology to solve the water crisis or geo-engineering to stabilize the climate) we may still crash because our techno-fixes are likely to have unintended consequences, as all technological interventions do. Anyway, the likelihood of successfully identifying and deploying all the needed fixes in time is vanishingly small.

Many problems are converging at once because society is a complex system, and the challenges we have been discussing are aspects of a systemic crisis. A useful way to frame an integrated understanding of the 21st century survival challenge is this: we humans have overshot Earth’s long-term carrying capacity for our species. We’ve been able to do this due to a temporary subsidy of cheap, bountiful energy from fossil fuels, which enabled us to stretch nature’s limits and to support a far larger overall population than would otherwise be possible. But now we are starting to see supply constraints for those fuels, just as the side effects of burning enormous amounts of coal, oil, and natural gas are also coming into view. Meanwhile, using cheap energy to expand resource-extractive and waste-generating economic processes is leading to biodiversity loss; the depletion of soil, water, and minerals; and environmental pollution of many kinds. Just decarbonizing energy, while necessary, doesn’t adequately deal with systemic overshoot. Only a reduction of population and overall resource consumption, along with a rapid reduction in our reliance on fossil fuels and a redesign of industrial systems, can do that.

Economic inequality is a systemic problem too. As we’ve grown our economy, those who were in position to invest in industrial expansion or to loan money to others have reaped the majority of the rewards, while those who got by through selling their time and labor (or whose common cultural heritage was simply appropriated by industrialists) have fallen behind. There’s no technological fix for inequality; dealing with it will require redesigning our economic system and redistributing wealth. Those in wealthy nations would, on average, have to adjust their living standards downward.

Now, can we do all of this without a crash? Probably not. Indeed, many economists would regard the medicine (population reduction, a decline in per-capita energy use, and economic redistribution) as worse than whatever aspects of the disease they are willing to acknowledge. Environmentalists and human rights advocates would disagree. Which is to say, there’s really no way out. Whether we stick with business as usual, or attempt a dramatic multi-pronged intervention, our current “normal” way of life is toast.

Accepting that a crash is more or less inevitable is a big step, psychologically speaking. I call this toxic knowledge: one cannot “un-know” that the current world system hangs by a thread, and this understanding can lead to depression. In some ways, the systemic crisis we face is analogous to the individual existential crisis of life and death, which we each have to confront eventually. Some willfully ignore their own mortality for as long as possible; others grasp at a belief in the afterlife. Still others seek to create meaning and purpose by making a positive difference in the lives of those around them with whatever time they have. Such efforts don’t alter the inevitability of death; however, contributing to one’s community appears to enhance well-being in many ways beyond that of merely prolonging life.

But is a crash the same as doom?

Not necessarily. Our best hope at this point would seem to be a controlled crash that enables partial recovery at a lower level of population and resource use, and that therefore doesn’t lead to complete and utter oblivion (human extinction or close to it). Among those who understand the systemic nature of our problems, the controlled crash option is the subject of what may be the most interesting and important conversation that’s taking place on the planet just now. But only informed people who have gotten over denial and self-delusion are part of it.

This discussion started in the 1970s, though I wasn’t part of it then; I joined a couple of decades later. There is no formal membership; the conversation takes place through and among a patchwork of small organizations and scattered individuals. They don’t all know each other and there is no secret handshake. Some have publicly adopted the stance that a global crash is inevitable; most soft-pedal that message on their organizational websites but are privately plenty worried. During the course of the conversation so far, two (not mutually exclusive) strategies have emerged.

The first strategy envisions convincing the managers and power holders of the world to invest in a no-regrets insurance plan. Some systems thinkers who understand our linked global crises are offering to come up with a back-pocket checklist for policy makers, for moments when financial or environmental crisis hits: how, under such circumstances, might the managerial elite be able to prevent, say, a stock market crash from triggering food, energy, and social crises as well? A set of back-up plans wouldn’t require detailed knowledge of when or how crisis will erupt. It wouldn’t even require much of a systemic understanding of global overshoot. It would simply require willingness on the part of societal power holders to agree that there are real or potential threats to global order, and to accept the offer of help. At the moment, those pursuing this strategy are working mostly covertly, for reasons that are not hard to discern.

The second strategy consists of working within communities to build more societal resilience from the ground up. It is easier to get traction with friends and neighbors than with global power holders, and it’s within communities that political decisions are made closest to where the impact is felt. My own organization, Post Carbon Institute, has chosen to pursue this strategy via a series of books, the Community Resilience Guides; the “Think Resilience” video series; and our forthcoming compendium, The Community Resilience Reader. Rob Hopkins, who originated the Transition Towns movement, has been perhaps the most public, eloquent, and upbeat proponent of the local resilience strategy, but there are countless others scattered across the globe.

Somehow, the work of resilience building (whether top-down or bottom-up) must focus not just on maintaining supplies of food, water, energy, and other basic necessities, but also on sustaining social cohesion—a culture of understanding, tolerance, and inquiry—during times of great stress. While it’s true that people tend to pull together in remarkable ways during wars and natural disasters, sustained hard times can lead to scapegoating and worse.

Most people are not party to the conversation, not aware that it is happening, and unaware even that such a conversation is warranted. Among those who are worried about the state of the world, most are content to pursue or support efforts to keep crises from occurring by working via political parties, religious organizations, or non-profit advocacy orgs on issues such as climate change, food security, and economic inequality. There is also a small but rapidly growing segment of society that feels disempowered as the era of economic growth wanes, and that views society’s power holders as evil and corrupt. These dispossessed—whether followers of ISIS or Infowars—would prefer to “shake things up,” even to the point of bringing society to destruction, rather than suffer the continuation of the status quo. Unfortunately, this last group may have the easiest path of all.

By comparison, the number of those involved in the conversation is exceedingly small, countable probably in the hundreds of thousands, certainly not millions. Can we succeed? It depends on how one defines “success”—as the ability to maintain, for a little longer, an inherently unsustainable global industrial system? Or as the practical reduction in likely suffering on the part of the survivors of the eventual crash? A related query one often hears after environmental lectures is, Are we doing enough? If “Enough” means “enough to avert a system crash,” then the answer is no: it’s unlikely that anyone can deliver that outcome now. The question should be, What can we do—not to save a way of life that is unsalvageable, but to make a difference to the people and other species in harm’s way?

This is not a conversation about the long-term trajectory of human cultural evolution, though that’s an interesting subject for speculation. Assuming there are survivors, what will human society look like following the crises ensuing from climate change and the end of fossil fuels and capitalism? David Fleming’s Surviving the Future and John Michael Greer’s The Ecotechnic Future offer useful thoughts in this regard. My own view is that it’s hard for us to envision what comes next because our imaginations are bounded by the reality we have known. What awaits will likely be as far removed from from modern industrial urban life as Iron-Age agrarian empires were from hunting-and-gathering bands. We are approaching one of history’s great discontinuities. The best we can do under the circumstances is to get our priorities and values straight (protect the vulnerable, preserve the best of what we have collectively achieved, and live a life that’s worthy) and put one foot in front of the other.

The conversation I’m pointing to here is about fairly short-term actions. And it doesn’t lend itself to building a big movement. For that, you need villains to blame and promises of revived national or tribal glory. For those engaged in the conversation, there’s only hard work and the satisfaction of honestly facing our predicament with an attitude of curiosity, engagement, and compassion. For us, threats of doom or promises of utopia are distractions or cop-outs.

Only those drawn to the conversation by temperament and education are likely to take it up. Advertising may not work. But having a few more hands on deck, and a few more resources to work with, can only help.


Saturday, October 22, 2016

The mother of all promises and how science failed to maintain it


"Energy too cheap to meter" was the mother of all promises (above, Disney's atomic genius from 1956).  Unfortunately, science failed utterly to deliver this and many other promises made during the "nuclear age," and even later. Eventually, people will realize how much hot air there is in the press releases about pretended scientific breakthroughs and, already today, we shouldn't be surprised if so many people don't trust what the scientists are telling them about climate change.


In the 1950s, during the high times of the "atomic age", someone had the unfortunate idea of claiming that nuclear technologies would give us, one day, "energy too cheap to meter." We might call it "the mother of all promises" and, of course, it was not maintained. But, as propaganda often does, it stuck in people's minds and it seems that many people still believe in the concept that energy too cheap to meter is just around the corner. Many seem to expect it to come with one of the many scams about "free energy" or "cold fusion" that litter the Internet today.

But breakthroughs bordering on miracles are claimed also in other fields of science and some scientists seem to have made a point in saving the world every two weeks or so. The latest scientific claim that went viral on the web is about a catalyst able to turn CO2 directly into ethanol. It is likely that many people understood as a miracle that would remove the dreaded CO2 from the air and transform it into something useful at little or no cost.

Yet, if you look at the original article, you will find nothing that suggests that this catalyst is ready for practical, real-world applications. There are no data about how long it can last in operating conditions, nor there are calculations that would tell us how efficient would be the whole process, considering that one has to saturate the electrolyte with CO2. The authors themselves state that "The overpotential (which might be lowered with the proper electrolyte, and by separating the hydrogen production to another catalyst) probably precludes economic viability for this catalyst." So, we have something that works in the lab, which is fine, of course, but we should never forget that the graveyard of failed inventions is littered with tombstones with the inscription "in the lab, it worked."

In the discussion that took place on Facebook about this story, some people asked me why I was criticizing this paper so much; after all, they said, it is a legitimate research report. It is true, but the problem is another one. What is the public supposed to think about this?

Most people will see only the press release and they lack the intellectual tools needed to understand and evaluate the original. And from the press release hey will understand that scientists are making a new claim of a further scientific miracle that will solve some important problem at some unspecified moment in the future. And then the whole story will be forgotten and the problems of climate, pollution, depletion, etc., will still be there; worse than before.

It is true that the myth of the scientific miracle is stubborn, mainly because it is a comfortable myth: nobody has to do anything except giving some money to our priests in white coats. But that can't last forever. Science, as all human enterprises, doesn't live in a vacuum, it lives on its reputation. People believe that science can do something good for them because science has done that in the past. But this reputation is being tarnished a little every time some hyped scientific claim falls into oblivion, as it is destined to do. The reserve of trust that science has accumulated in the past is not infinite.

Already today, you can see the decline of the reputation of science with the many people who believe that no man ever never walked on the moon. Even worse, you can see it with those (nearly 50% of the American public) who believe that human-caused climate change is an elaborate hoax created by a cabal of evil scientists who are only interested in their fat research grants.

So, what happens when the reserve of trust in science runs out for good? I don't know, but wouldn't it be a good thing for scientists to be a little more humble and stop promising things they know they can't maintain?



See also this recent post by Andrea Saltelli on the same subject




Friday, October 14, 2016

Aren't humans a little weird?




Just a little note about something I noticed a few days ago in a hotel room. Note the ubiquitous sign where they ask you whether you want to be environmentally friendly by not having your towel replaced. I don't think there remains a single hotel in the whole world where they don't ask you that.

But, in this case, the sign is placed right near the tower rail heating system; it is electric, not part of the room heating system. And there is no obvious way to turn it off in case you feel that your towels are warm enough at the temperature of the room.

Maybe you could make an LCA study that will tell you that an electric rail-heating system is less energy hungry than having a towel washed. Or maybe not. But it is funny that how successful a plea for being environmentally friendly can be. And how meaningless, considering the amount of energy that the people staying in hotels must have used to get there.

So, in the end, asking you if you want your towel washed or not seems more than all a little propitiatory spell to make you feel good. Maybe you flew there all the way from the other side of the world, spwing untold amounts of CO2 into the atmosphere. But, what the hell, you are a friend of the environment and you will keep your wet towels on that electrically heated rail!

Aren't humans a little weird?






Sunday, March 6, 2016

Living in interesting times: have CO2 emissions peaked?


Image from MIT Technology Review

The projections that had been circulating during the past few months turned out to be correct. Now, it is official: the global carbon dioxide (CO2) emissions peaked in 2014 and went down in 2015. And this could be a momentous change.

Don't expect the emission peak, alone, to save us from the impending climate disaster, but, if CO2 emissions will start an irreversible decline, then we need to rethink several assumptions that we have been making on how to deal with climate change. In particular, depletion is normally assumed to be a minor factor in determining the trajectory of the world's economy during the coming decades, but that may not be the case. Depletion is not a good thing in itself, but it might help us (perhaps) to stay within the "safe" limits and avoid a climate disaster.

CO2 emissions are mainly the result of the combustion of fossil fuels and of activities made possible by the combustion of fossil fuels. And, since we expect the production of fossil fuels to peak and decline as the result of depletion, it shouldn't be a surprise that CO2 emissions should peak too. But it is surprising that we may be already seeing the peak. For instance, Laherrere had assumed the peak for all fossils to occur not before around 2025. And many people would have seen these projections as ridiculously catastrophistic. Most of the published scenarios for the future saw CO2 emissions increasing for at least a few decades in the future unless draconian economic or legislative measures to limit them were taken.

So, what we are seeing may be simply a fluctuation; not necessarily "the peak". But, it might also be the big one: the point of no-return. From now on, we may find ourselves rolling down on the other side of the Hubbert curve. It would be the true vindication of the "base case" scenario of "The Limits to Growth" that had seen the combination of gradual depletion and pollution to cause the start of the terminal decline of the fossil based industrial system at some moment during the 2nd-3rd decade of the 21st century.

Let's assume that we really are at the peak of both emissions and fossil energy consumption, then what? First of all, the event will be surely misinterpreted. The techno-optimists will say that what we are seeing is proof of how human ingenuity can solve all problems while the anti-science crowd will hail these results as the evidence of two things: 1) that climate is nothing to be worried about and 2) that those silly climate scientists have been proven wrong one more time.

Of course, none of these interpretations is correct and the situation remains critical for various good reasons. I can list at least three of them

1. There is really no reason to congratulate ourselves for being so smart. The reduction in emissions may be partly due to better efficiency, renewable energy, and the like. But, mainly, it is the result of the global economic slowdown. The IMF data indicate that the world's GDP has peaked in 2014, together with CO2 emissions and 2016 could shrink even more (see also Tyler Durden). The reasons for all this have to do with the gradual decline of the energy yield of fossil fuels, in turn related to progressive depletion. That has generated the disaster that struck the oil industry and the whole mineral industry in the form of collapsing prices. With the decline of the extractive industry, the reason why emissions peaked is because people are poorer, not smarter (so much for the so-called "dematerialization" of the economy).

2. The fact that emissions may have peaked does not mean a reduction in the CO2 accumulation in the ecosystem. We are only slowing down the flow, but the stocks keep being filled. CO2 accumulates in two main reservoirs: the atmosphere and the oceans and we may already have too much of it in both. And that says nothing about possible feedback effects out of human control, such as the release of methane from hydrates. So, we are still risking a lot in terms of the very unpleasant things that could occur in the future (including a runaway climate change).

3. Even assuming that emissions are facing an irreversible decline, the decline rate is likely to be still too slow to stay within the limits that are perceived as (perhaps) safe. Let's assume that emissions will follow a "Hubbert" curve, that is they will go down at the same speed as they went up so far. It means that in the future we will emit approximately as much we have emitted up to now. Can that save us from catastrophic climate change? Not really. So far, we emitted a grand total 1465 gigaton (Gt) of CO2) that might be the amount that we'll emit in the future. Unfortunately, according to Meinshausen et al  in order to have a 25% probability to stay below the 2 degrees limit, we cannot emit more than about 1000 Gt of CO2. And we are not there. According to Meisenhausen, with 1500 Gt of CO2 emitted, we are almost exactly at a 50/50 probability of staying below 2 C. If your hobby is to play the Russian roulette with a real gun, you should enjoy the situation we find ourselves in.

Still, the possible peaking of the CO2 emission. although not sufficient to save us, may not be a bad thing since, at least, it eases the task of staying within the safe limits. And not just that. These new data should lead us to rethink about some of our entrenched assumptions. So far, we have been assuming that a herculean effort will be needed to force the economic system to stop using resources that were assumed to be abundant and cheap. So herculean that it seemed to be totally impossible. But, if we really are at the peak of fossils, then the effort needed could be much less herculean: depletion will help us a lot. At this point, the emphasis should shift from "phasing out" fossil fuels - that would go largely by itself - to "phasing in" renewables - that needs a specific effort. And if we want to phase in the renewables we need to do that before the collapse of the fossil fuel industry makes it impossible to invest enough in their deployment.

Finally, there is another interesting possibility (in the sense of the ancient Chinese curse: 'may you live in interesting times'). The decline might not follow a
Hubbert curve but, rather, a Seneca curve. That is, emissions may decline much faster than they grew in the past. That implies, of course, a parallel crash of fossil fuel production and of the world GDP. The resulting  economic collapse might keep us within the "safe" climate limits. That would be so bad to be almost unimaginable, but, at least, better than some truly horrible climate scenarios. And, why not, we could have both the collapse of the economy and a runaway climate change! (not just fire or ice, but fire and ice)

Truly, we live in interesting times.

_______________________________________

Note: from some messages I received, it seems that many people find that the mere concept that the world GDP could decline is unthinkable and contrary to some universal principle. And, yet, it is shrinking. See this plot from Vox.




Monday, September 7, 2015

Global warming: how much heat, exactly?



It is often difficult to visualize what we are doing to our planet. But a simple calculation shows that the greenhouse effect generated by fossil fuels can be seen as the equivalent of turning on more than a hundred 1 kW electric heaters for each human being on the earth. And we can't turn them off!



If you look at the way climatologists describe global warming, you'll see that they use a lot the term "forcing"; that is, the additional effect of human activities to the natural heating from sunlight. Not all forcings increase temperatures, some tend to reduce it; for instance, atmospheric particulate. The overall result is called "imbalance" or "net forcing." You can think of a forcing in terms of someone trying to budge a person who doesn't want to move. If the person pushing is stronger, the net resulting force will cause the person being pushed to move. In the case of climate, the warming forcings are stronger than the cooling forcings, and the net result is a rise in temperature.

As we keep emitting CO2 and other gases in the atmosphere, the greenhouse forcing increases, as you see in the figure below (Hansen 2011).


In this figure, forcings are measured in terms of W/m2 (watts per square meter), as it is generally done in climate science. Unfortunately, it is a kind of unit that doesn't convey a feeling of the magnitude of what we are doing to our planet. A few watts per square meter are approximately equivalent to a single Christmas light, and that doesn't look worrisome. But, if you take into account the effect on the whole planet (510 million km2), then the overall forcing is gigantic. From Hansen's figure, you can calculate something like 1500 TW (terawatts, or trillions of watts) for the greenhouse gas forcing and around 500 TW for the net forcing. These numbers vary depending on which factors are considered; for instance, Zhang and Caldeira, (2015) consider the effect of CO2, alone, and calculate a forcing of 1.57 W/m2, that is about 800 TW. (For more data, see also Steve Easterbrook and Dana Nuccitelli et al.).

In any case, we are talking about huge numbers, at least hundreds of TW. For comparison, think that the total primary energy generated by burning fossil fuels is "just" about 15 TW, and practically all of it is eventually turned into heat. So, the indirect greenhouse warming effect is 1-2 orders of magnitude larger. We may also compare with the total solar irradiation that arrives to the earth's surface, around 90,000 TW (Szargut 2003). The effect of the sun is much larger than the human forcing, but not so much larger that the latter can be considered negligible. So, it is not surprising that human activities are causing a detectable warming of the whole planet.

Note also that we have been discussing just the effect of the current forcing. But, whereas the heat from burning fossil fuels is rapidly dissipated, CO2 remains in the atmosphere for a long time, tens of thousands of years and even more (Archer 2005). And this CO2 will keep warming the earth for a total effect that Zhang and Caldeira (2015) estimate as about 100,000 times larger than the direct thermal effect of the combustion that created it.

At this point, we can try to visualize these values by comparing them to something familiar. As an order of magnitude, let's take the number calculated from Zhang and Caldeira's paper, that is a forcing of 800 TW resulting from CO2 alone. That would correspond to 800 billion electric heaters of 1 kW each, all turned on together.

Considering that there are more than seven billion people on the earth, we may think that the CO2 forcing, alone, is equivalent to each one of us turning on a hundred electric heaters of one kW each. The net forcing - the actual heat being added to the atmosphere - is smaller, but the overall picture doesn't change: we can visualize it as corresponding to 250-400 billion heaters, about 50 per person. And, if we want to make the number of heaters proportional to energy consumption, people living in the rich West would be associated with many more. Imagine each home in your neighborhood stacking hundreds of electric heaters in their front yard, all turned on at full power, and you have some idea of what we are doing to our planet.

So, we have turned the heat on, and now we discover that there is no way to turn it off. (At least not as easily as you can turn off an electric heater). The best we can do, for the time being, is to avoid adding too many heaters to the ones already on. Even that seems to be extremely difficult, but we can at least try.




h/t Steve Easterbrook, Dana Nuccitelli, John Cook, Ben, Michael Tobis, John Abraham, and others. Note also that there are other attempts to visualize the total amount of heat generated by human forcing, for instance, in terms of "four Hiroshima bombs detonated per second" Spectacular, but probably less intuitive than electric heaters.

 

References

Archer, David (2005) Fate of fossil fuel CO 2 in geologic time  Journal of Geophysical Research vol. 110 (C9) p. C09S05

Hansen, J., M. Sato, P. Kharecha, and K. von Schuckmann, 2011: Earth's energy imbalance and implications. Atmos. Chem. Phys., 11, 13421-13449, doi:10.5194/acp-11-13421-2011.

Szargut, Jan T. 2003. “Anthropogenic and Natural Exergy Losses (exergy Balance of the Earth’s Surface and Atmosphere).” Energy 28 (11): 1047–54. doi:10.1016/S0360-5442(03)00089-6.

Zhang, Xiaochun,  Caldeira, Ken, (2015) Time scales and ratios of climate forcing due to thermal versus carbon dioxide emissions from fossil fuels,  Geophys. Res. Lett, 42, 11,  1944-8007







Tuesday, February 21, 2012

Peak? What peak? King coal is coming back!



King Coal may be coming back to save us from peak oil, but condemning us to a worse fate in terms of global warming (image from the National Media Museum


Recently, Rembrandt Koppelaar has published on the Oil Drum a summary of the world's trends in energy production. The report tells us that the oil industry is struggling to maintain the present levels of production. It may not have peaked yet, but clearly it can't resume the past trends of increase. That's not surprising, it had been foreseen already in 1998 by Colin Campbell and Jean Laherrere (link). What's striking, instead, is the leap forward of coal. The world's total energy production is not peaking and that's because of the rapid growth of coal, as you can see here, from Koppelaar's report:

Coal seemed to have peaked in 1990, but it was an illusion. The growth of coal production during the first decade of the 21st century has been impressive; never seen before in history. So, King Coal is coming back and he may soon reclaim the title of ruler of the energy world that it had lost to crude oil in the 1960s.

We are not seeing anything like a tendency to peak for coal and that, unfortunately, is not good for climate. We can see that from the "other side" of the chemical reaction that sees fossil fuels transformed into carbon dioxide, CO2, whose concentration in the atmosphere is increasing faster in recent times. (the figure below is from "think progress," see also this previous post).



We cannot say that the burst of carbon dioxide that we are seeing is due to coal alone, but it corresponds well to the spike in coal production and it is surely related to it. The global climate situation seems to be rapidly going out of control and this rapid increase in CO2 concentrations doesn't bode well for the future. Bowing down our heads again to King Coal may turn out to be the worst choice we ever made in history.

Who

Ugo Bardi is a member of the Club of Rome, faculty member of the University of Florence, and the author of "Extracted" (Chelsea Green 2014), "The Seneca Effect" (Springer 2017), and Before the Collapse (Springer 2019)