The fossil fuel companies haven't given up ...

 .... they've embraced other tactics instead.

From a podcast by Michael E Mann on The Planet

Michael E Mann is one of the world's most influential climate scientists. The distinguished professor of atmospheric science at Penn State is known for the hockey stick graphs and as a defender of climate science while being targeted by climate change deniers. He's also the writer of the excellent book The New Climate War. He joined me this week in The Planet podcast. The excerpt of the interview is in this newsletter. 

The New Climate War. For decades, you have been fighting a well-funded disinformation campaign by the fossil fuel companies. Your book is about the New Climate War. Did you and other scientists win the first one?

The old Climate War was an effort of polluters, the fossil fuel companies, and conservative groups representing their interests to discredit the basic science and the scientific evidence of human-caused climate change. This war has essentially been won; we've reached the point where it just isn't credible anymore to deny that it's happening and deny that we can see the impacts because we're seeing them play out almost in real-time. 

But that doesn't mean that the fossil fuel industry has given up; they've turned to other tactics, which I detail in The New Climate War, in their effort to keep us addicted to fossil fuels. Because in the end, they don't care about the reason. They don't care about the path we take; they just care about the destination. So they want us disengaged, and they want us to remain reliant on fossil fuels. And so they lead us to deny that the problem exists or deflect our attention away from meaningful solutions, divide us, and get us fighting with each other; they want to make sure that we don't represent a United Front. 

They try to convince us that it's just about individual lifestyle choices so that we don't demand policy action and systemic changes. Or they can get us to believe that it's too late to do anything about the problem, which, ironically, potentially leads us to the same place of disengagement. 

So these are the tactics that we are now facing. And that's really what the book is about: helping people recognize these tactics and recognize how to push back on them because we can feel we are so close now to finally seeing the action that we worked for so hard and so long. But there are still these obstacles in our way. And we need to recognize those obstacles so we can finally act in a manner consistent with the challenge we face.

Do shorter showers help?  But are there behavioral changes we should take as individuals to reduce our carbon footprint? Like taking shorter showers or going on a biking holiday instead of flying to Tahiti? And I believe that you are, like me, a vegetarian?

I don't eat meat, but I guess I'm a pescetarian. So I'm not all the way to vegetarian yet. But indeed, I find that I'm happier, feel better, and feel healthier. So there are all of these things that we can do that decrease our environmental impact or our carbon footprint. They make us feel better, save us money, and set a good example for other people. 

So, of course, we should do all these things. But what we have to guard against is this argument that if we do these things, that solves the problem. And that that's all we need to do. Because that indeed does play into the agenda of polluters who would love to have us so focused on our individual carbon footprint that we fail to notice theirs. Seventy percent of our carbon emissions come from just one hundred polluters. And so, while we should do all these things that we can do to decrease our environmental impact, we also have to make sure that we hold polluters accountable. And we should also hold our policymakers or politicians accountable for acting on our behalf rather than acting in the interests of a small number of polluting interests.

In your book, you also mention the tactics used by the tobacco industry, or for instance, the gun lobby that promotes the line that "guns don't kill people, but people kill people." You also mentioned a "crying Indian" campaign?

If you grew up in the States in the 1970s, you remember this ad that profoundly impacted us. This tearful, Native American was canoeing down this river that's been polluted by all these strewn bottles and can liter, and it felt empowering. It felt like, yes, we need to clean up our environment. But it turns out it was a PR campaign that was hatched on Madison Avenue by Coca-Cola and the beverage industry. They wanted to convince us that we didn't need bottle bills. We didn't need systemic solutions. So they made it all about us to further their interests. Because the bottom line is that acting in a systemic way, a bottle bill, these regulations would solve this problem at its source, but it would cost them profits. And thanks to their very effective deflection campaign, we have one of our other great global environmental crises today: the plastic pollution crisis, thanks to the clever and effective use of a deflection campaign by the industry. We have to recognize they're doing that right now on carbon emissions and climate.

“The truth is bad enough”  On Twitter, I see examples of people who have given up all hope to stop climate change. They believe we have passed tipping points that make our future on this planet doomed anyway. They refer, for instance, to the methane escaping the thawing permafrost areas. I suppose that approach is not very motivating to take climate action?

I like to say that the truth is bad enough; we don't need to exaggerate. And you're absolutely right; you see a lot of this on social media, and some of this is authentic; a fair amount of these are good-hearted people, people who ironically would otherwise be on the front lines and demanding action. But they've been led astray by pretty clever manipulation. 

The people at the very top of this are not innocent. There are bad actors who want to convince us that it's too late because of simply the physical response of the climate system, as you alluded to this idea of runaway feedbacks. But that's not supported by science. There's no science that supports the idea that we are committed to some sort of runaway warming. The science pretty clearly now indicates that how much warming we get is a function of how much carbon we burn. And the flip side of that is if we bring our carbon emissions to zero, the warming, at least of the surface of our planet, stabilizes very quickly. 

Now there might be some longer timescale responses. And we worry about this; the destabilization of ice sheets, for example. But we basically stop the warming of the planet if we stop polluting the atmosphere with carbon. It's so important to recognize that. What has happened here is that the forces of inaction, I call them the "inactivists" in the book, have actually tried to convince many climate advocates that it is too late, either because of this idea of runaway warming methane and feedback loops.

 But the science doesn't support the idea that we're close to any sort of runaway methane sort of bomb response to the climate system. So only if we warm the planet enough, if we do nothing, then yes, we start to enter into that realm. But we're not anywhere close to it now. So if we act now, that's not going to happen.

The other part of their approach is convincing us that our politics are so broken that there's no way that we can achieve meaningful action. And we see this in the wake of the COP 26 Glasgow Summit. You saw well-known climate change deniers like Marc Morano quoting out of context some climate advocates. That made it sound like the entire process had collapsed, that it's unsalvageable, and that there is no reason to even continue with these multilateral negotiations. And indeed, the fossil fuel industry would love nothing more than for us to give up on any possibility of climate action. And we see that some of that messaging was weaponized, in this case, by the forces of inaction. 

There are other examples that I talked about in the book. Online, there are bad state actors. Russia, for example, has promoted climate change denial; they want to monetize all of those fossil fuels that are buried beneath Russian soil. And they have worked for years, using Black Ops social media campaigns to influence American politics, European politics, and Canadian politics in a way that stymies meaningful climate action. And we know that they have armies of bots and trolls that pollute the social media space and are intended to take in well-meaning bystanders. These people would otherwise be on the frontlines, but they convinced them it's too late to do anything and that there's no possibility of meaningful policy action. They want these people on the sidelines rather than on the frontlines.

Nuclear energy.  An issue that came up several times in recent podcasts was nuclear energy. I remember once speaking with Jim Hanson about it, and he said that we don't have the luxury to pick and choose; we all want solar and wind, but we might have to go down that nuclear road as well. So is nuclear safe enough, and is it economically efficient enough, or should we go for renewables like wind and solar and become much more efficient? 

I respect Jim greatly, and I also respect the point of view of Jim and all other people who think that nuclear is an important option in addressing the climate crisis. But I am not convinced it is. And I go through that in some detail in the book in the New Climate War. Renewable energy is cheaper, and nuclear comes with risks like radiation, nuclear proliferation, and conflict. It is also really expensive, and it requires huge government subsidies to be viable. So if you're a free-market conservative, it doesn't make sense for you to be arguing for nuclear energy because it's not viable in the market against cheaper sources of energy. 

One of the arguments has been that we just can't scale up renewable energy fast enough. And then there are storage issues, the sun isn't always shining, and the wind isn't always blowing. A lot of that has been solved. We now have significant new technology for energy storage with smart grid technology. We have the tools now to solve this problem with renewable energy. I am convinced that that's the case. There are experts in this field who've made a compelling argument that that's the case, like Mark Jacobson of Stanford. And so there is a cheaper solution, and it comes with less risk. 

The only obstacle here isn't technological at this point; it's political. We just need policies that speed up this transition that's already underway from fossil fuels to renewable and clean energy. We can do it. I'm convinced that we can, and we don't have to follow this riskier path of nuclear or geoengineering or some of these other technologies that can supposedly save us.

Michael E  Mann.  Photo by Joshua Yospynd

Last 7 years hottest ever

 From NOAA

Source: NOAA

Cooler than it was in 2020, because it was a La Niña year.  A fair bit cooler than 2016, an El Niño year, when the Pacific gives up some of the heat it has absorbed during the La Niña.  Still, the last 7 years have been the warmest measured by thermometer in the last nearly 150 years, and, using numerous proxy measurements, the hottest in the last 2000.  Temperatures will drop over the next couple of years because of the massive eruption of the volcano in Tonga.  No doubt, denialists will have a field day, pointing out that temperatures have fallen since 2016.   After all, after the last big El Niño in 2008, they dined out for years on the fact that temperatures had "stopped rising", ignoring the ENSO  (El Niño- Southern Oscillation) cycles.

The iconic hockey stick extended

 From ArsTechnica

The climate “hockey stick” refers to a reconstruction of temperatures over the past 1,000 years. The data shows flattish temperatures over the last millennium, like the handle of a Hockey stick, ending in a "blade" of rapidly rising temperatures since the industrial revolution. The idea first appeared in a paper by Michael Mann and Raymond Bradley of the University of Massachusetts and Malcolm Hughes of the University of Arizona. The work became famous after appearing in a UN climate report, after which it was the focus of climate denial, hacking, defamation, and disinformation, all of which was dramatized in a recent BBC TV drama called “The Trick.”

Today, in a paper published by Nature, scientists show that the "handle" of the "hockey stick" extends back 9,500 years, while its "blade" is taller—the last decade was 1.5° C hotter than the average temperature over the last 11,700 years. "Human-caused global temperature change during the last century was likely faster than any changes during the last 24,000 years," said lead author Dr. Matt Osman of the University of Arizona.

To measure temperatures at times long before the invention of thermometers, scientists must use indirect proxies. For the new study, scientists carefully vetted over 500 proxy records from oceans around the world; the data shows the fossilized remains of plankton and microbes in sediments where the age is known from radiocarbon dating.

Researchers then used statistical methods to calculate sea surface temperatures from the chemical properties of those remains. “We spent seven years developing the models for the different kinds of marine temperature proxies, incorporating knowledge from biology and geochemistry and using the best statistical practice,” explained coauthor Dr. Jessica Tierney of the University of Arizona and leader of the lab in which this research was conducted.

The researchers combined the proxy temperatures with climate model simulations to account for the incomplete geographic distribution of data, and they cross-checked their results with independent records such as ice drilled from polar regions and stalagmites in caves.

But unlike earlier studies, the new work shows that, prior to our current warming, there was a slow, long-term warming of 0.5° C that started 9,500 years ago. It also shows that the "handle" of the climate "hockey stick" is straight, whereas in prior studies, the "handle" was warped, with early warming followed by cooling into preindustrial times.

The new results resolve a disagreement between climate models (which simulated warming) and proxy studies (which showed cooling). The problem was known as the “Holocene Temperature Conundrum.”

Dr. Samantha Bova of San Diego State University, who published a reconstruction of temperatures for the same time period earlier this year, agreed, saying, “Both reconstructions show no evidence for an early Holocene warm period.” She pointed out that her paper used a completely different method, so the fact that her research came to the same conclusion as the Tierney team “leaves little room for doubt that the Holocene was a period of long-term warming,” she said.

Note right scale is lower than left, for clarity

 

See also Forget the "hockey stick". Now we have the "scythe"

Forget the "hockey stick". Now we have the "scythe"

 From an article by Michael E Mann in Time Magazine.

“Widespread and severe”—that’s how climate scientists from around the world have described the impacts of climate change in a new United Nations report published today. The report’s findings further affirm warnings scientists like me have been sharing for decades. More than three decades ago, during a congressional hearing on a hot July 1988 afternoon in Washington, D.C., Dr. James E. Hansen told our elected officials that it was already possible to detect a warming of the planet due primarily to an increase in carbon dioxide concentrations from fossil fuel burning.

Hansen was prescient. It would take the United Nations’ Intergovernmental Panel on Climate Change (IPCC) another seven years after that to conclude that there was a “discernible human influence” on our climate. The IPCC, like many scientific institutions, is intrinsically conservative. So, when they state that the impacts of climate change are now “widespread and severe,”  it means that the impacts of climate change are now widespread and severe. Of course, you don’t need a scientific report to tell you that at this point. You need simply watch the unprecedented extreme weather disasters we’ve witnessed this summer play out in real time on our television screens and in our newspaper headlines.

With the release of the new Sixth Assessment report (“AR6”) on the science underlying the climate crisis, the news is not good. In addition to the finding that climate impacts are widespread and severe, the report shows that many severe impacts are locked in for the future.

Two decades ago, the so-called “hockey stick” curve, published by my co-authors and me in 1999, was featured in the all-important “summary for policy makers” (or “SPM”) of the 2001 Third IPCC Assessment report. The curve, which depicts temperature variations over the past 1,000 years based on “proxy” records such as tree rings, corals, and ice cores, showed the upward spiking of modern temperatures (the “blade”) as it dramatically ascends, during the industrial era, upward from the “handle” that describes the modest, slightly downward steady trend that preceded it.

Featured in the AR6 SPM now is an even longer hockey stick with an even sharper blade. [The "scythe"]

The new report also suggests that the recent warming is not only unprecedented over the past two millennia, but possibly, the past hundred millennia—let that sink in. As the IPCC report lays bare, we are engaged in a truly unprecedented and fundamentally dangerous experiment with the one planet we know that can support us and all other known life.

More than in its previous reports, the IPCC now truly connects the dots between fossil fuel burning, the warming of the planet, and the deadly extreme weather events we’re now enduring. And if we fail to act on the climate crisis, as the new report shows, we can expect more expansive wildfires, more intense hurricanes, hotter heat waves, and increasingly drenching flash floods. Given the horrific extreme weather we are already living through, you can trust me—we do not want this to get worse.

This is the cost we all are already paying for the delay that polluters have been sowing. It didn’t have to be this way. The fossil fuel industry knew a half century ago that their products—coal, oil, gas—would lead to the climate change future that we’re living in today. For them, the quick money was more important than being responsible corporate citizens to help build a sustainable future for mankind.

Instead, they spent millions of dollars on a massive disinformation campaign to convince the public and policymakers that climate change either wasn’t real, wasn’t a threat, or would be too expensive to do anything about (when in fact the opposite is very clearly true). They wrote a check that our children, grandchildren, and great-grandchildren will be forced to cash if we fail to act, and which will leave them with a climate that will become increasingly untenable for civilization as we know it. Thankfully, there’s still time to prevent that stark future from occurring.

The new IPCC report shows that we can prevent many of the worst impacts of climate change and keep warming below 1.5°C above preindustrial levels—the target of the global Paris Agreement. While some impacts—like more flooding in coastal areas, continued glacial melt and sea level rise—are now baked in, we can still take steps to ensure they don’t get much more severe. If we can reduce carbon emissions dramatically, and keep warming below 1.5°C, we could, for example, hold sea level rise to just a couple feet over the next century. If we fail, the report shows we could ultimately be facing 20 feet or more of global sea level rise, a scenario where we’d be forced to say farewell to the major coastal cities of the world.

It’s possible to turn the ship around, but it won’t be easy. The IPCC has determined that planetary warming of 1.5°C (and possibly even 2°C) will be exceeded in a matter of decades “unless deep reductions in carbon dioxide, methane, and other greenhouse gas emissions occur in the coming decades.” That means we must reduce our carbon pollution from transportation, electricity and other sectors here in the U.S., and around the world. Climate change will be costly and disruptive, but it’s not yet beyond our capacity to adapt.

To limit warming to 1.5 degrees,

• Developed countries need to slash emissions by 50% by 2030, which means emissions need to fall by a compound 7.5% per annum.  This is feasible if we replace fossil fuels in electricity generation and transition our vehicle fleet to EVs and PHEVs.
• Developing countries (especially China)  need to build no new coal power stations and must start step-by-step replacement of their aging coal-fired power stations, as well as shift their car/lorry fleets to EVs
• To accelerate this process, fossil fuel subsidies must be withdrawn, and a carbon tax must be introduced.

It's not that hard, whatever the fossil fuel apologists say.

Unparallelled over 2000 years

Note that chart only goes up to 2000.  Since then global warming has accelerated to 2 degrees C per century.
Source: ZME Science

From ZME Science:

The climate warming we are causing is unparalleled in the past 2,000 years.

Not only is the climate warming faster than at any point in at least 2,000 years, but in contrast to pre-industrial climate fluctuations, climate change is now occurring across the entire planet at the same time.

When it comes to global warming, the general situation is essentially a settled issue. We know that the planet is heating up, and we know that this is happening as a result of our emissions of greenhouse gases (particularly carbon dioxide). However, some details and particularities of this process are not as well understood.

For instance, climate variability over the past 2,000 years has been subject to great debate. As climate change deniers are quick to point out, our planet’s climate has changed before in the past — although this is missing the true scope of the issue. For instance, some might point out that the Earth has been hotter than it is now in its geological past while ignoring the fact that these events happened tens of millions of years ago, due to natural causes, over long periods of time, and the effects were still devastating for life on Earth. The more you look at today’s context, the more you understand that this situation has no precedent.

In a recent study, researchers analyzed the past two millennia, assessing the factors that caused climate variability in the past and the extent of the climatic changes.

In one paper, Raphael Neukom and colleagues from Bern University compiled data from around 700 proxy records of temperature changes. They specifically looked at unusual warming and cooling events. But wherever they looked, they found the same thing: nothing is even close to the current scale of events.

Take an event commonly called the Little Ice Age, a significant cooling event that started in the 1300s and lasted centuries. The period is well-represented in art, with numerous painters covering it through the centuries. This produced an important misunderstanding, researchers say, because it propagated the idea that the entire planet was cooling at the same time.

“It’s true that during the Little Ice Age it was generally colder across the whole world,” explains Raphael Neukom, “but not everywhere at the same time. The peak periods of pre-industrial warm and cold periods occurred at different times in different places.”

According to the study, the cooling events happened mostly in parts of Europe and North America. Because these areas were so influential culturally and artistically, it propagated the idea that the Earth cooled similarly in all parts of the world, which was not really the case — as shown by climate proxies from other parts of the world. For instance, the coldest temperatures occurred in central and eastern Pacific regions in the 15th century, in northwestern Europe and southeastern North America in the 17th century, and elsewhere during the 19th century. This lack of uniformity suggests that local influences, rather than planet-wide phenomena, were at play.
In contrast to that, all of the Earth’s major regions have seen their warmest temperatures in recent years, and the overall trend indicates a constant, planetary warming.

“We find that the warmest period of the past two millennia occurred during the 20th Century for more than 98% of the globe,” the study reads.

“This provides strong evidence that anthropogenic (human induced) global warming is not only unparalleled in terms of absolute temperatures but also unprecedented in spatial consistency within the context of the past 2,000 years.”

The study debunks another misconception: that volcanoes or solar activity are the main drivers of climate change. In pre-industrial times, random fluctuations within the climate systems themselves drove variations and change. External factors such as volcanic eruptions were not intense enough to cause major climate change for decades — let alone centuries.

[Read more here]

The Hockey Stick, 20 years on

Hat tip to Climate Denial Crock of the Week.

From the AGU100 Blogosphere:

When we look back on 20th-century science a few decades from now, a few images that stand out above the rest. Earthrise may be the most famous. It was taken by Apollo 8 Astronaut Bill Anders 50 years ago last December. I’ve written before about how that single image changed the way we humans see our planet. 

Here’s another image that also led to a dramatic change in how we see our planet:

That graph that would become known as the hockey stick. It was published in a paper by Dr. Michael Mann et. al on 15 March 1999 in the AGU Journal Geophysical Research Letters.

The stick was a powerful image showing how fast our planet’s temperature was rising compared to the stable climate of the past 1000 years. In 1999, there were a large number of people who insisted that the planet was not warming at all, and some even insisted that a new ice age was looming! The hockey stick showed clearly that we were indeed warming, and that something bad was happening to our stable climate. 

Twenty years have passed, and the hockey stick has stood up against the firestorm of criticism it elicited.  (Read this.) Most of that was from people with no background in science. Those who talk about any science quickly learn that when you show someone information that conflicts with their worldview, they will often dismiss it and or get angry, and accuse you of showing them fake data. This includes people who do not believe in vaccines and others who DO believe in chemtrails, UFO’s, or that pro-wrestling is real.

Source: Stefan Rahmstorf

All of this happened to Dr. Mann after that paper was published, and all of it fell by the wayside as others did what science requires: replication.

If others cannot replicate your work, it will not be accepted as good science.

Other scientists did indeed replicate it, and improved upon it, with newly recovered data and observations. Dr. Mann improved his first graph with even better data as well. This week, a more recent version was posted on Twitter this week by Climatologist Stefan Rahmstorf. The stick is even sharper now and gets more so every year. It now shows how unusual the last 100 years have been.

In his book, Brian Fagan (the renowned archeologist) has called the stable climate of the Holocene, “The Long Summer“.  All of human civilization developed in the stable climate of the last 6,000 years, but the data clearly shows that a real heat wave is headed for humanity and we are running out of time to deal with it.

[Read more here]

We need to start cutting emissions.  As fast as, and as soon as, we can. If we could cut emissions by a compound 5% a year we could reduce them by 80% by 2050.   That has to be our target.  And we could start by never building another coal-fired power station anywhere in the world ever again, while steadily closing down the old coal power stations which are wearing out.