Greenhouse Gas Effect Quotes

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According to Project Drawdown, four of the most effective strategies for mitigating global warming are reducing food waste, educating girls, providing family planning and reproductive healthcare, and collectively shifting to a plant-rich diet. The benefits of these advancements extend far beyond the reduction of greenhouse gas emissions, and their primary cost is our collective effort.
Jonathan Safran Foer (We Are the Weather: Saving the Planet Begins at Breakfast)
Crutzen wrote up his idea in a short essay, “Geology of Mankind,” that ran in Nature. “It seems appropriate to assign the term ‘Anthropocene’ to the present, in many ways human-dominated, geological epoch,” he observed. Among the many geologic-scale changes people have effected, Crutzen cited the following: • Human activity has transformed between a third and a half of the land surface of the planet. • Most of the world’s major rivers have been dammed or diverted. • Fertilizer plants produce more nitrogen than is fixed naturally by all terrestrial ecosystems. • Fisheries remove more than a third of the primary production of the oceans’ coastal waters. • Humans use more than half of the world’s readily accessible fresh water runoff. Most significantly, Crutzen said, people have altered the composition of the atmosphere. Owing to a combination of fossil fuel combustion and deforestation, the concentration of carbon dioxide in the air has risen by forty percent over the last two centuries, while the concentration of methane, an even more potent greenhouse gas, has more than doubled. “Because of these anthropogenic emissions,” Crutzen wrote, the global climate is likely to “depart significantly from natural behavior for many millennia to come.
Elizabeth Kolbert (The Sixth Extinction: An Unnatural History)
Hence there are many things that governments, corporations and individuals can do to avoid climate change. But to be effective, they must be done on a global level. When it comes to climate, countries are just not sovereign. They are at the mercy of actions taken by people on the other side of the planet. The Republic of Kiribati – an islands nation in the Pacific Ocean – could reduce its greenhouse gas emissions to zero and nevertheless be submerged under the rising waves if other countries don’t follow suit. Chad could put a solar panel on every roof in the country and yet become a barren desert due to the irresponsible environmental policies of distant foreigners. Even powerful nations such as China and Japan are not ecologically sovereign. To protect Shanghai, Hong Kong and Tokyo from destructive floods and typhoons, the Chinese and Japanese will have to convince the Russian and American governments to abandon their ‘business as usual’ approach.
Yuval Noah Harari (21 Lessons for the 21st Century)
When the Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly of carbon dioxide, nitrogen, methane and sulphur. Hardly the sort of stuff that we would associate with life, and yet from this noxious stew life formed. Carbon dioxide is a powerful greenhouse gas. This was a good thing, because the Sun was significantly dimmer back then. Had we not had the benefit of a greenhouse effect, the Earth might well have frozen over permanently25, and life might never have got a toehold. But somehow life did. For the next 500 million years the young Earth continued to be pelted relentlessly by comets, meteorites and other galactic debris, which brought water to fill the oceans and the components necessary for the successful formation of life. It was a singularly hostile environment, and yet somehow life got going. Some tiny bag of chemicals twitched and became animate. We were on our way. Four billion years later, people began to wonder how it had all happened.
Bill Bryson (A Short History of Nearly Everything)
Adding carbon dioxide, or any other greenhouse gas, to the atmosphere by, say, burning fossil fuels or leveling forests is, in the language of climate science, an anthropogenic forcing. Since preindustrial times, the concentration of CO2 in the atmosphere has risen by roughly a third, from 280 to 378 parts per million. During the same period, the concentration of methane has more than doubled, from .78 to 1.76 parts per million. Scientists measure forcings in terms of watts per square meter, or w/m2, by which they mean that a certain number of watts have been added (or, in the case of a negative forcing, like aerosols, subtracted) for every single square meter of the earth’s surface. The size of the greenhouse forcing is estimated, at this point, to be 2.5 w/m2. A miniature Christmas light gives off about four tenths of a watt of energy, mostly in the form of heat, so that, in effect (as Sophie supposedly explained to Connor), we have covered the earth with tiny bulbs, six for every square meter. These bulbs are burning twenty-four hours a day, seven days a week, year in and year out. If greenhouse gases were held constant at today’s levels, it is estimated that it would take several decades for the full impact of the forcing that is already in place to be felt. This is because raising the earth’s temperature involves not only warming the air and the surface of the land but also melting sea ice, liquefying glaciers, and, most significant, heating the oceans, all processes that require tremendous amounts of energy. (Imagine trying to thaw a gallon of ice cream or warm a pot of water using an Easy-Bake oven.) The delay that is built into the system is, in a certain sense, fortunate. It enables us, with the help of climate models, to foresee what is coming and therefore to prepare for it. But in another sense it is clearly disastrous, because it allows us to keep adding CO2 to the atmosphere while fobbing the impacts off on our children and grandchildren.
Elizabeth Kolbert (Field Notes from a Catastrophe)
About 4.6 billion years ago, a great swirl of gas and dust some 15 billion miles across accumulated in space where we are now and began to aggregate. Virtually all of it—99.9 percent of the mass of the solar system—went to make the Sun. Out of the floating material that was left over, two microscopic grains floated close enough together to be joined by electrostatic forces. This was the moment of conception for our planet. All over the inchoate solar system, the same was happening. Colliding dust grains formed larger and larger clumps. Eventually the clumps grew large enough to be called planetesimals. As these endlessly bumped and collided, they fractured or split or recombined in endless random permutations, but in every encounter there was a winner, and some of the winners grew big enough to dominate the orbit around which they traveled. It all happened remarkably quickly. To grow from a tiny cluster of grains to a baby planet some hundreds of miles across is thought to have taken only a few tens of thousands of years. In just 200 million years, possibly less, the Earth was essentially formed, though still molten and subject to constant bombardment from all the debris that remained floating about. At this point, about 4.5 billion years ago, an object the size of Mars crashed into Earth, blowing out enough material to form a companion sphere, the Moon. Within weeks, it is thought, the flung material had reassembled itself into a single clump, and within a year it had formed into the spherical rock that companions us yet. Most of the lunar material, it is thought, came from the Earth’s crust, not its core, which is why the Moon has so little iron while we have a lot. The theory, incidentally, is almost always presented as a recent one, but in fact it was first proposed in the 1940s by Reginald Daly of Harvard. The only recent thing about it is people paying any attention to it. When Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly of carbon dioxide, nitrogen, methane, and sulfur. Hardly the sort of stuff that we would associate with life, and yet from this noxious stew life formed. Carbon dioxide is a powerful greenhouse gas. This was a good thing because the Sun was significantly dimmer back then. Had we not had the benefit of a greenhouse effect, the Earth might well have frozen over permanently, and life might never have gotten a toehold. But somehow life did. For the next 500 million years the young Earth continued to be pelted relentlessly by comets, meteorites, and other galactic debris, which brought water to fill the oceans and the components necessary for the successful formation of life. It was a singularly hostile environment and yet somehow life got going. Some tiny bag of chemicals twitched and became animate. We were on our way. Four billion years later people began to wonder how it had all happened. And it is there that our story next takes us.
Bill Bryson (A Short History of Nearly Everything)
Even the most recent IPCC report, dire as it is, spells out solutions of a sort. There are ways to mitigate things, there are ways to fix them. Ban fossil fuels. Stop eating meat and dairy; according to an IPCC report from 2014, animal agriculture contributes at least as much to global greenhouse gas emissions as the combined exhaust of all the world’s vehicles. What’s that you say? Too difficult? Can’t switch to an oil-free economy overnight? Okay, here’s something that’s effective, simple, and as convenient as a visit to the nearest outpatient clinic: stop breeding. Every child you squeeze out is a Godzilla-sized carbon bootprint stretching into the future—and after all, isn’t 7.6 billion of us enough? Are your genes really that special? If even half the men on the planet got vasectomies, I bet we could buy ourselves a century—and as an added bonus, child-free people not only tend to have higher disposable income than the sprogged, they’re also statistically happier.
Peter Watts (Peter Watts Is An Angry Sentient Tumor: Revenge Fantasies and Essays)
The principal energy sources of our present industrial civilization are the so-called fossil fuels. We burn wood and oil, coal and natural gas, and, in the process, release waste gases, principally CO2, into the air. Consequently, the carbon dioxide content of the Earth’s atmosphere is increasing dramatically. The possibility of a runaway greenhouse effect suggests that we have to be careful: Even a one- or two-degree rise in the global temperature can have catastrophic consequences. In the burning of coal and oil and gasoline, we are also putting sulfuric acid into the atmosphere. Like Venus, our stratosphere even now has a substantial mist of tiny sulfuric acid droplets. Our major cities are polluted with noxious molecules. We do not understand the long-term effects of our course of action. But we have also been perturbing the climate in the opposite sense. For hundreds of thousands of years human beings have been burning and cutting down forests and encouraging domestic animals to graze on and destroy grasslands. Slash-and-burn agriculture, industrial tropical deforestation and overgrazing are rampant today. But forests are darker than grasslands, and grasslands are darker than deserts. As a consequence, the amount of sunlight that is absorbed by the ground has been declining, and by changes in the land use we are lowering the surface temperature of our planet. Might this cooling increase the size of the polar ice cap, which, because it is bright, will reflect still more sunlight from the Earth, further cooling the planet, driving a runaway albedo* effect? Our lovely blue planet, the Earth, is the only home we know. Venus is too hot. Mars is too cold. But the Earth is just right, a heaven for humans. After all, we evolved here. But our congenial climate may be unstable. We are perturbing our poor planet in serious and contradictory ways. Is there any danger of driving the environment of the Earth toward the planetary Hell of Venus or the global ice age of Mars? The simple answer is that nobody knows. The study of the global climate, the comparison of the Earth with other worlds, are subjects in their earliest stages of development. They are fields that are poorly and grudgingly funded. In our ignorance, we continue to push and pull, to pollute the atmosphere and brighten the land, oblivious of the fact that the long-term consequences are largely unknown.
Carl Sagan (Cosmos)
About 4.6 billion years ago, a great swirl of gas and dust some 24 billion kilometres across accumulated in space where we are now and began to aggregate. Virtually all of it – 99.9 per cent of the mass of the solar system21 – went to make the Sun. Out of the floating material that was left over, two microscopic grains floated close enough together to be joined by electrostatic forces. This was the moment of conception for our planet. All over the inchoate solar system, the same was happening. Colliding dust grains formed larger and larger clumps. Eventually the clumps grew large enough to be called planetesimals. As these endlessly bumped and collided, they fractured or split or recombined in endless random permutations, but in every encounter there was a winner, and some of the winners grew big enough to dominate the orbit around which they travelled. It all happened remarkably quickly. To grow from a tiny cluster of grains to a baby planet some hundreds of kilometres across is thought to have taken only a few tens of thousands of years. In just 200 million years, possibly less22, the Earth was essentially formed, though still molten and subject to constant bombardment from all the debris that remained floating about. At this point, about 4.4 billion years ago, an object the size of Mars crashed into the Earth, blowing out enough material to form a companion sphere, the Moon. Within weeks, it is thought, the flung material had reassembled itself into a single clump, and within a year it had formed into the spherical rock that companions us yet. Most of the lunar material, it is thought, came from the Earth’s crust, not its core23, which is why the Moon has so little iron while we have a lot. The theory, incidentally, is almost always presented as a recent one, but in fact it was first proposed in the 1940s by Reginald Daly of Harvard24. The only recent thing about it is people paying any attention to it. When the Earth was only about a third of its eventual size, it was probably already beginning to form an atmosphere, mostly of carbon dioxide, nitrogen, methane and sulphur. Hardly the sort of stuff that we would associate with life, and yet from this noxious stew life formed. Carbon dioxide is a powerful greenhouse gas. This was a good thing, because the Sun was significantly dimmer back then. Had we not had the benefit of a greenhouse effect, the Earth might well have frozen over permanently25, and life might never have got a toehold. But somehow life did. For the next 500 million years the young Earth continued to be pelted relentlessly by comets, meteorites and other galactic debris, which brought water to fill the oceans and the components necessary for the successful formation of life. It was a singularly hostile environment, and yet somehow life got going. Some tiny bag of chemicals twitched and became animate. We were on our way. Four billion years later, people began to wonder how it had all happened. And it is there that our story next takes us.
Bill Bryson (A Short History of Nearly Everything)
Some of the world’s biggest banks and investor groups have swung behind a pledge to raise $200bn by the end of next year to combat climate change. In a move the UN said was unprecedented, leading insurers, pension funds and banks have joined forces to help channel the money to projects that will help poorer countries deal with the effect of global warming and cut reliance on fossil fuels. The announcement came at the start of a UN climate summit in New York aimed at bolstering momentum for a global agreement to lower planet-warming greenhouse gas emissions due to be signed in Paris at the end of 2015. “Change is in the air,” said UN secretary-general, Ban Ki-moon. “Today’s climate summit has shown an entirely new, co-operative global approach to climate change.” The summit opened with business and government pledges to make cities greener, create a renewable energy “corridor” in Africa and rein in the clearing of forests for palm oil plantations. The private sector’s contributions marked a “major departure” from past climate summits, the UN said, adding in a statement that financial groups “had never previously acted together on climate change at such a large scale”. One obstacle to the Paris agreement is developing countries’ insistence that richer nations must fulfil pledges made nearly five years ago to raise $100bn a year by 2020 for climate action.
Anonymous
Climate change alarmism is a belief system, and needs to be evaluated as such. There is, indeed, an accepted scientific theory which I do not dispute and which, the alarmists claim, justifies their belief and their alarm. This is the so-called greenhouse effect: the fact that the earth’s atmosphere contains so-called greenhouse gases (of which water vapour is overwhelmingly the most important, but CO2 is another) which, in effect, trap some of the heat we receive from the sun and prevent it from bouncing back into space. Without the greenhouse effect, the planet would be so cold as to be uninhabitable. But, by burning fossil fuels—coal, oil and gas—we are increasing the amount of CO2 in the atmosphere and thus, other things being equal, increasing the earth’s temperature. But four questions immediately arise, all of which need to be addressed, coolly and rationally. First, other things being equal, how much can increased atmospheric CO2 be expected to warm the earth? (This is known to scientists as climate sensitivity, or sometimes the climate sensitivity of carbon.) This is highly uncertain, not least because clouds have an important role to play, and the science of clouds is little understood. Until recently, the majority opinion among climate scientists had been that clouds greatly amplify the basic greenhouse effect. But there is a significant minority, including some of the most eminent climate scientists, who strongly dispute this. Second, are other things equal, anyway? We know that over millennia, the temperature of the earth has varied a great deal, long before the arrival of fossil fuels. To take only the past thousand years, a thousand years ago we were benefiting from the so-called medieval warm period, when temperatures are thought to have been at least as warm, if not warmer, than they are today. And during the Baroque era we were grimly suffering the cold of the so-called Little Ice Age, when the Thames frequently froze in winter and substantial ice fairs were held on it, which have been immortalised in contemporary prints. Third, even if the earth were to warm, so far from this necessarily being a cause for alarm, does it matter? It would, after all, be surprising if the planet were on a happy but precarious temperature knife-edge, from which any change in either direction would be a major disaster. In fact, we know that, if there were to be any future warming (and for the reasons already given, ‘if’ is correct) there would be both benefits and what the economists call disbenefits. I shall discuss later where the balance might lie. And fourth, to the extent that there is a problem, what should we, calmly and rationally, do about it?
Alan Moran (Climate Change: The Facts)
The more greenhouse gas we create, the more warming we will get today, and the more warming we will continue to get in the coming decades and centuries. To make the situation even more serious and the need for action even more apparent and urgent, bear in mind that there is no stopping a large fraction of future warming, because billions and billions of tons of the gases that are going to bring it on are already in the air. Even the most fragile of them do not break down for decades. Their effects will be felt for millennia to come.
Bill Nye (Unstoppable: Harnessing Science to Change the World)
Ben West, one of the effective altruists mentioned in chapter 4, has shown that even if your goal were solely to slow down climate change by reducing greenhouse gas emissions, you could do that more effectively by donating to organizations that are encouraging people to go vegetarian or vegan than by donating to leading carbon-offsetting organizations.
Peter Singer (The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically)
One common strategy on which we should all be able to agree is to take steps to reduce the risk of human extinction when those steps are also highly effective in benefiting existing sentient beings. For example, eliminating or decreasing the consumption of animal products will benefit animals, reduce greenhouse gas emissions, and lessen the chances of a pandemic resulting from a virus evolving among the animals crowded into today’s factory farms, which are an ideal breeding ground for viruses. That therefore looks like a high-priority strategy. Other
Peter Singer (The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically)
Over your lifetime, your individual greenhouse gas contribution will only increase the temperature of the planet by about a half a billionth of a degree Celsius. That, you might think, is such a small difference as to be negligible, so you shouldn't bother trying to reduce your personal emissions. This reasoning, however, doesn't consider expected value. It's true that increasing the planet's temperature by half a billionth of a degree probably won't make a difference to anyone, but sometimes it will make a difference, and when it does, the difference will be very large. Occasionally , that increase of half a billionth of a degree will cause a flood or a heatwave that wouldn't have happened otherwise. In which case the expected harm of raising global temperatures by half a billionth of a degree would be fairly great. We know that something like this has to be the case because we know that, if millions of people emit greenhouse gases, the bad effects are very large, and millions of people emitting greenhouse gases is just the sum of millions of individual actions.
William MacAskill (Doing Good Better: How Effective Altruism Can Help You Make a Difference)
Carlton Church Warning - Nuclear Fraud Scheme North Korea has been producing different nuclear weapons since last year. They have sent warning on the neighboring countries about their plan for a nuclear test. Not just South Korea, but other countries like China, U.S., and Japan have stated their complaints. Even the United Nations has been alarmed by North Korea’s move. During the last period of World War, a bomb has been used to attack Japan. Happened on 6th of August 1945, Enola Gay dropped an atomic bomb just 10 kilometers away from Tokyo. This is why people and organizations like Carlton Church who’s against the use of nuclear power for production of armory in war. Many protested that it is a threat to mankind and environment. Groups who are in favor of the nuclear use explained its advantage. They say it can be helpful in generating electricity that can be used for residential and commercial purposes. They also expound how it is better to use than coal mining as it is “less harmful to the environment.” Nuclear Use: Good or Bad? Groups who are against the use of nuclear reactor and weapons try to persuade people about its catastrophic result to the environment and humankind. If such facility will be used to create weapons, there is a possibility for another world war. But the pro-nuclear groups discuss the good effects that can be gained from it. They give details on how greenhouse gas effect of coal-burning can emit huge amounts of greenhouse gases and other pollutants such as sulfur dioxide nitrogen oxide, and toxic compounds of mercury to the atmosphere every year. Burning coal can produce a kilowatt-hour of electricity but it also amounts to over two pounds of carbon dioxide emissions. They also added that the amount of carbon dioxide it produces contributes to climate change. Sulfur dioxide may cause the formation of acid rain and nitrogen oxide, if combined with VOCs, will form smog. Nuclear power plants do not emit harmful pollutants or other toxic gases. Generating energy from nuclear involves intricate process, but as a result, it produces heat. These plants have cooling towers that release water vapor. If the facility has been properly managed it may not contribute disturbance in the atmosphere. It may sound better to use compared to coal. But studies have shown that the vapor that came from nuclear plants have an effect to some coastal plants. The heated water that was released goes back to lakes and seas, and then the heat will eventually diffuse into surface warming. As a result of the increased water temperature on the ocean bodies, it changes the way carbon dioxide is transferred within the air. In effect, major shifts in weather patterns such as hurricanes may occur. It does not stop there. The nuclear power plant produces radioactive waste, which amounts to 20 metric tons yearly. Exposure to high-level radiation is extremely harmful and fatal to human and animals. The waste material must be stored carefully in remote locations for many years. Carlton Church and other anti-nuclear groups persuade the public to initiate banning of the manufacturing of nuclear products and give warnings about its health hazards and environmental effects.
Glory
It seems appropriate to assign the term ‘Anthropocene’ to the present, in many ways human-dominated, geological epoch,” he observed. Among the many geologic-scale changes people have effected, Crutzen cited the following: • Human activity has transformed between a third and a half of the land surface of the planet. • Most of the world’s major rivers have been dammed or diverted. • Fertilizer plants produce more nitrogen than is fixed naturally by all terrestrial ecosystems. • Fisheries remove more than a third of the primary production of the oceans’ coastal waters. • Humans use more than half of the world’s readily accessible fresh water runoff. Most significantly, Crutzen said, people have altered the composition of the atmosphere. Owing to a combination of fossil fuel combustion and deforestation, the concentration of carbon dioxide in the air has risen by forty percent over the last two centuries, while the concentration of methane, an even more potent greenhouse gas, has more than doubled. “Because of these anthropogenic emissions,” Crutzen wrote, the global climate is likely to “depart significantly from natural behavior for many millennia to come.
Elizabeth Kolbert (The Sixth Extinction: An Unnatural History)
Though the question of global warming had not yet emerged to public perception, natural gas—methane—is about thirty times more effective than carbon dioxide as a greenhouse gas. No one has calculated how much the vast waste of natural gas across the decades of the twentieth century—in the United States and throughout the world—contributed to global warming. The percentage was certainly more than zero.
Richard Rhodes (Energy: A Human History)
Titan, by our standards, is really cold, at -290 degrees Fahrenheit. Without any methane greenhouse, it would be much colder still, by about 22 degrees. Yet, if we put all that methane into a basic climate model, we find that there should be about twice the level of greenhouse warming that is actually observed. What’s missing from the model? This question led to the discovery of the “anti-greenhouse effect.”5 It has to do with all that orange organic haze suspended in Titan’s upper atmosphere. It turns out that the passage of radiation through this haze is having an effect exactly opposite from that of a greenhouse gas: it blocks visible light but allows infrared light to pass through. Such a haze will prevent sunlight from warming a planet yet will allow the planet to cool efficiently into space. The effect on Titan’s climate is to negate about half the value of the greenhouse warming caused by methane. The Titan anti-greenhouse effect turns out also to be a pretty good match for what happens to Earth’s climate in the immediate aftermath of a huge asteroid impact or giant volcanic eruption and what would happen to it in the aftermath of a nuclear
David Grinspoon (Earth in Human Hands: Shaping Our Planet's Future)
them out if they make dumb choices. Let them struggle; let them learn; let them take responsibility. They need to figure out the importance of working hard, saving money, being smart. For God’s sake, don’t be a damned fool and then go begging the government to save you.” This is not a stupid argument. I come at the issues differently, of course, as someone who supports a strong social safety net. But this more conservative view represents a considered and consistent position, worthy of respect. Lower-income conservatives are making the same kind of argument that rich liberals are making. They are willing to make monetary sacrifices to answer the call of their fundamental values. For liberals, those values are more about the common good and enlightened self-interest. For conservatives, those values are more about the importance of independence and personal responsibility. But both sides rightfully see their voting behavior as needing to reflect more than just a vulgar calculation about their immediate pocketbook needs. If one side deserves respect, then so does the other.*1 Of course, respecting our opponent’s argument doesn’t mean we have to just accept it and give in. It doesn’t mean we shouldn’t argue passionately about the best approach to taxes or spending—especially in a society as complex as ours, with the stakes as high as they are. In fact, we should disagree and debate. Debate is the lifeblood of democracy, after all. Disagreement is a good thing—even heated disagreement. Only in a dictatorship does everybody have to agree. In a democracy, nobody has to agree. That’s called freedom. It’s the whole point of America. But at the base of too many of our public discussions sits the same destructive assumption: I’m right. And you’re wrong. We proceed on both sides as if our side is grounded in “the Truth” and the other side is always insane and delusional. And some version of this flawed concept has become the default setting throughout American political discourse. It is one thing to say, “I disagree with you because we have different values and priorities.” It’s quite another to say, “I disagree with you because you are an uneducated idiot—a pawn—and a dupe.” The prevalence of the latter set of arguments is why the Democratic Party stinks of elitism. Here’s another liberal favorite: “How can we argue with conservatives? They don’t believe in facts anymore—only ‘alternative facts.’ At least, liberals believe in science. Right-wingers don’t!” I understand the source of liberal exasperation here. Even though any high school student can reproduce the greenhouse-gas effect in a laboratory beaker,
Van Jones (Beyond the Messy Truth: How We Came Apart, How We Come Together)
To contain the problem, it’s essential for water levels to be closely monitored and managed. Shallow flooding, together with nitrogen and organic matter management, can limit this seesaw effect and reduce greenhouse gas emissions up to 90 percent.
John Doerr (Speed & Scale: An Action Plan for Solving Our Climate Crisis Now)
Another side effect of fertilization that is receiving more attention is the generation of nitrous oxide by bacterial decomposition of nitrates. Not only is N2O a greenhouse gas but, on a hundred-year time scale, it has a nearly three hundred times higher global warming potential than carbon dioxide, the dominant greenhouse gas. But because of its relatively small emissions, N2O is responsible for only about 6 percent of recent anthropogenic greenhouse gas emissions.
Vaclav Smil (Invention and Innovation: A Brief History of Hype and Failure)
While we’ve talked about how the overall amount of that radiation has to balance the warming sunlight, the radiation is actually spread over a spectrum of different wavelengths. Think of those like “colors,” although not visible to our eyes. Water vapor, the most significant greenhouse gas, intercepts only some colors, but because it blocks almost 100 percent of those it does, adding more water vapor to the atmosphere won’t make the insulation much thicker—it would be like putting another layer of black paint on an already black window. But that’s not true for carbon dioxide. That molecule intercepts some colors that water vapor misses, meaning a few molecules of CO2 can have a much bigger effect (like the first layer of black paint on a clear window). So the greater potency of a CO2 molecule depends upon relatively obscure aspects of how it, and water vapor, intercept heat radiation—another example of why the details are important when attempting to understand human influences on the climate.
Steven E. Koonin (Unsettled: What Climate Science Tells Us, What It Doesn’t, and Why It Matters)
Evidence for climate change has been available for some time, so why has this 'urgent global response' (in Stern's words) not occurred? The IPCC (2015) have argued that we could limit the effects of climate change by changing our individual and collective behaviour. We could fly less, eat less meat, use public transport, cycle or walk, recycle, choose more low carbon products, have shorter showers, waste less food or reduce home energy use. There has been some significant change but nothing like the 'global response' required to ameliorate the further deleterious effects of climate change. We are reminded here of a somewhat depressing statistic reported by a leading multinational, Unilever, in their 'sustainable Living Plan.' In 2013, they outlined how they were going to halve the greenhouse gas impact of their products across the life cycle by 2020. To achieve this goal, they reduced greenhouse gas emissions from their manufacturing chain. They opted for more environmentally friendly sourcing of raw materials, doubled their use of renewable energy and produced concentrated liquids and powders. They reduced greenhouse gas emissions from transport and greenhouse gas emissions from refrigeration. They also restricted employee travel. The result of all these initiatives was that their 'greenhouse gas footprint impact per consumer... increased by around 5% since 2010.' They concluded, 'We have made good progress in those areas under our control but ... the big challenges are those areas not under direct control like... consumer behaviour ' (2013:16; emphasis added). It seems that consumers are not 'getting the message.' They are not opting for the low carbon alternatives in the way envisaged; they are not changing the length of their showers (to reduce energy and water consumption); they are not breaking their high-carbon habits. The question is why?
Geoffrey Beattie (The Psychology of Climate Change (The Psychology of Everything))
you’ve done a bit of chemistry, you might recall that sodium carbonate reacts with CO2 to create sodium bicarbonate (baking soda). Well, in Klaus’s machines there is a hanging gallery of strands of a ‘sorbent’ resin – impregnated sodium carbonate – which react with the CO2 in the air flowing over them, the captured CO2 helping to create baking soda. Capturing CO2, though, is only one half of the job. Somehow you’ve got to get the CO2 off the sorbent if you want the apparatus to be reusable and therefore cost-effective. Restocking the whole shebang with a new supply of sorbent resin makes things prohibitively expensive and energy hungry. This is where Lackner’s resin comes into its own, by doing something that even Klaus admits is counterintuitive. In the presence of water the resin changes its affinity for CO2, shedding its recently collected bounty. The ‘collection’ reaction takes a reverse step. Sodium bicarbonate becomes sodium carbonate. What this means is that if Klaus pumps water vapour into his machines, CO2 from the sorbent will ‘fall off’ the resin, allowing the whole apparatus to be reused. Condensing that vapour allows the captured CO2 to bubble out the top, in the same way CO2 bubbles rise to the top of champagne. There’s a kind of sweet poetry to one greenhouse gas (water vapour) collecting another (CO2). After all, one of the problems with CO2 in the atmosphere is that it encourages more water vapour into the air, thereby amplifying the warming effect. Here, thanks to the chemistry of Lackner’s sorbent, the opposite is happening. Water vapour is being used as part of a process to take CO2 out of the air.
Mark Stevenson (An Optimist's Tour of the Future)
Over a 20-year period, methane is estimated to have a warming effect on Earth’s atmosphere 84 times that of carbon dioxide. By that metric, the Aliso Canyon leak produced the same amount of global warming as 1,735,404 cars in a full year. During the four months the leak lasted—25 days longer than the BP oil spill in the Gulf of Mexico—the leak contributed roughly the same amount of warming as the greenhouse-gas emissions produced by the entire country of Lebanon.
Hope Jahren (The Best American Science And Nature Writing 2017 (The Best American Series))
Global warming is not 'yes' or 'no', nor is it 'today's weather forever' or 'doomsday tomorrow'. It is a function that gets worse over time as long as we continue to produce greenhouse gas. And so the experience of life in a climate transformed by human activity is not just a matter of stepping from one stable ecosystem into another, somewhat worse one, no matter how degraded or destructive the transformed climate is. The effects will grow and build as the planet continues to warm: from 1 degree to 1/5 to almost certainly 2 degrees and beyond. The last few years of climate disasters may look like about as much as the planet can take. In fact, we are only just entering our brave, new world, one that collapses below us as soon as we set foot on it.
David Wallace-Wells (The Uninhabitable Earth: Life After Warming)